177 results on '"Zubaid, Akbar"'
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2. Effect of supplementary food on the ecology of wood mice (Apodemus sylvaticus L.) living in a sand dune habitat
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Ahmad, Zubaid Akbar bin Mukhtar
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577 ,Ecology - Abstract
The purpose of this study was to test the hypothesis that food availability was responsible for the low population density, larger home range size, high degree of daytime activity and longer activity periods of wood mice living in a sand dune habitat compared to those living in deciduous woodlands in Grampian, North-East Scotland. An experiment was set-up whereby one population of mice was provided with superabundant food in the form of wheat and the parameters mentioned above were measured and compared with an adjacent control population with natural levels of food. Seasonal changes in population density, demography and breeding biology were obtained via live-trapping. The home range size and activity patterns were measured by the use of radio-telemetry. The presence in. or absence from the nest was recorded automatically by a minichart recorder. The supplemented population had a higher density (2-3 times), higher recruitment rate (2-8 times), earlier start to the breeding season, increased juvenile recruitment and lowered weight of sexual maturity compared to the control population. Supplemental food did not prevent the normal population decline over winter, improve survival rates or extend the breeding season into winter. It was concluded that food interacts with behavioural and other environmental factors to. limit population density. The supplemented mice had significantly smaller home range sizes both in the breeding and non-breeding seasons compared to the control mice. The supplemented mice moved significantly shorter distances per night compared to the control mice. The supplemented mice were strictly nocturnal, emerging from the nests after sunset and returning before sunrise, and spent significantly less time active, both in the breeding and non-breeding seasons compared to the control mice. No regular short-term rhythms were observed in the individuals monitored in both populations. Diet analysis showed that the mice were feeding mainly on arthropods throughout the year. The low density and mobility of the food resources would account for the differences in home range size and activity patterns of the control mice mentioned previously.
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- 1990
3. Diversity of Malaysian insectivorous bat assemblages revisited
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Lim, Lee-Sim, Mohd-Adnan, Adura, Zubaid, Akbar, Struebig, Matthew J., and Rossiter, Stephen J.
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- 2014
4. Depauperate Avifauna in Tropical Peat Swamp Forests Following Logging and Conversion to Oil Palm Agriculture: Evidence from Mist-netting Data
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Hawa, Ainil, Azhar, Badrul, Top, Marina Mohd, and Zubaid, Akbar
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- 2016
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5. Fruit bats and bat fruits: the evolution of fruit scent in relation to the foraging behaviour of bats in the New and Old World tropics
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Hodgkison, Robert, Ayasse, Manfred, Häberlein, Christopher, Schulz, Stefan, Zubaid, Akbar, Mustapha, Wan Aida W., Kunz, Thomas H., and Kalko, Elisabeth K. V.
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- 2013
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6. To the bat cave: a conservation option for Batu Caves, Selangor, Malaysia.
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AZIZ, SARAH, NURATIQAH, ABD RAHMAN, KIEW, RUTH, ZUBAID, AKBAR, and ILYANA, HASSYA AZMANNIZAM
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BAT conservation ,NATURE reserves ,GEODIVERSITY ,WILDLIFE refuges ,CONSERVATION projects (Natural resources) ,NATIONAL parks & reserves - Abstract
The Third Malaysia Plan (1976-1980) earmarked Batu Caves as a nature monument, listing it as part of its proposed national parks, nature reserves, nature monuments and wildlife sanctuaries. The listing is pegged on the need to put into effect conservation measures grounded on the ecosystems approach. The policy direction then was to ensure that the diversity of ecosystems are effectively conserved, to complement existing national parks and wildlife sanctuaries. Batu Caves was earmarked as a potential area for recreation and tourism. Various literature related to Batu Caves have shown that the area is unique and rich in diversity - both biodiversity and geodiversity, which also makes it susceptible to threats and risks. Taking into account the need to put into place conservation measures from ecosystem as well as geosystem approaches, there is a need to revisit the conservation goal and strategy, as well as review the existing legislative regime that is applicable to Batu Caves. However, given that Batu Caves requires specific measures due to its unique features and richness, the option of badging it as a nature reserve will need to be given serious consideration. This paper looks at one option of establishing such a nature reserve, leveraging on the provisions of the National Land Code 1965. It also recommends the establishment of a specific authority, similar to the Selangor State Water Authority, to manage nature reserves with Batu Caves being one of the many areas that can be listed, thus forming a network of reserves that will be managed by the State government directly. [ABSTRACT FROM AUTHOR]
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- 2023
7. Updated checklist of bats from the Batu Caves karst massif, Selangor, Peninsular Malaysia.
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NURATIQAH, ABD RAHMAN, SENAWI, JULIANA, SYEDAZIZ, SHARIFAH-SAKINAH, SYAHIRAH ABID KAMAL, SITI NUR AZMINA, and ZUBAID, AKBAR
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KARST ,BATS ,HORSESHOE bats ,CAVES ,INFORMATION resources management ,SPELEOTHEMS - Abstract
Bat diversity at Batu Caves has been studied for over a hundred years. Among the 20 caves at Batu Caves, records for the Dark Cave date back to the 1880s and constitute the most comprehensive faunal catalogue of any cave in Southeast Asia. Surveys between January and December 2019 updated and validated the results of past scientific studies at Batu Caves. Twelve species of bats were recorded by trapping using mist nets and harp traps, as well as observations at seven different sampling points. Cynopterus brachyotis, Embalonoura monticola, Hipposideros cineraceus, H. kunzi, Rhinolophus refulgens, and R. steno are new records for Batu Caves. A living sample of Rousettus leschenaultii (Leschenault's rousette) was captured during this survey, confirming its presence in Batu Caves. This study also reported a new locality for Hipposideros kunzi. The data obtained provides new information for the conservation and management of cave-roosting bat assemblages around Batu Caves. [ABSTRACT FROM AUTHOR]
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- 2023
8. Sources of Assimilated Proteins in Old and New World Phytophagous Bats
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Voigt, Christian C., Zubaid, Akbar, Kunz, Thomas H., and Kingston, Tigga
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- 2011
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9. Bats and Buildings: The Conservation of Synanthropic Bats
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Voigt, Christian C., primary, Phelps, Kendra L., additional, Aguirre, Luis F., additional, Corrie Schoeman, M., additional, Vanitharani, Juliet, additional, and Zubaid, Akbar, additional
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- 2015
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10. UNIVERSITY TEACHERS PREFERRED DIGITAL TOOLS FOR TEACHING ENGLISH ONLINE
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Nuretna Asurah, Norazha Paiman, Azwan Shaiza Nizam, Farah Zubaid Akbar, Normazidah Che Musa, Maryam Mohamed Amin, Wahiza Wahi, Shazleena Othman, and Nani Rahayu Sallihuddin
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Teaching english ,University teachers ,Mathematics education ,Psychology - Published
- 2021
11. Pteropus vampyrus, a Hunted Migratory Species with a Multinational Home-Range and a Need for Regional Management
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Epstein, Jonathan H., Olival, Kevin J., Pulliam, Juliet R. C., Smith, Craig, Westrum, Justin, Hughes, Tom, Dobson, Andrew P., Zubaid, Akbar, Rahman, Sohayati Abdul, Basir, Misliah Mohamad, Field, Hume E., and Daszak, Peter
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- 2009
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12. Comparative Roosting Ecology of Cynopterus (Chiroptera: Pteropodidae) Fruit Bats in Peninsular Malaysia
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Campbell, Polly, Reid, Noah M., Zubaid, Akbar, Adnan, Adura M., and Kunz, Thomas H.
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- 2006
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13. UNIVERSITY TEACHERS PREFERRED DIGITAL TOOLS FOR TEACHING ENGLISH ONLINE
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Mohamed Amin, Maryam, primary, Zubaid Akbar, Farah, additional, Sallihuddin, Nani Rahayu, additional, Paiman, Norazha, additional, Che Musa, Normazidah, additional, Asurah, Nuretna, additional, Wahi, Wahiza, additional, Nizam, Azwan Shaiza, additional, and Othman, Shazleena, additional
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- 2021
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14. Temporal Variation in the Relative Abundance of Fruit Bats (Megachiroptera: Pteropodidae) in Relation to the Availability of Food in a Lowland Malaysian Rain Forest
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Hodgkison, Robert, Balding, Sharon T., Zubaid, Akbar, and Kunz, Thomas H.
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- 2004
15. Fruit Bats (Chiroptera: Pteropodidae) as Seed Dispersers and Pollinators in a Lowland Malaysian Rain Forest
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Hodgkison, Robert, Balding, Sharon T., Zubaid, Akbar, and Kunz, Thomas H.
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- 2003
16. Urban forest fragmentation impoverishes native mammalian biodiversity in the tropics
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Adham Ashton-Butt, Norizah Kamarudin, Liza D. Samantha, Alex M. Lechner, Sze Ling Tee, Badrul Azhar, and Zubaid Akbar
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0106 biological sciences ,Habitat fragmentation ,Ecology ,010604 marine biology & hydrobiology ,species composition ,Biodiversity ,omnivores ,010603 evolutionary biology ,01 natural sciences ,herbivores ,Geography ,Urban forest ,Abundance (ecology) ,Deforestation ,urban forest patches ,Forest ecology ,F810 Environmental Geography ,Species richness ,species richness ,contiguous forest ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation ,Global biodiversity ,Original Research - Abstract
Urban expansion has caused major deforestation and forest fragmentation in the tropics. The impacts of habitat fragmentation on biodiversity are understudied in urban forest patches, especially in the tropics and little is known on the conservation value of the patches for maintaining mammalian biodiversity. In this study, camera trapping was used to determine the species composition and species richness of medium‐ and large‐sized mammals in three urban forest patches and a contiguous forest in Peninsular Malaysia. We identified the key vegetation attributes that predicted mammal species richness and occurrence of herbivores and omnivores in urban forest patches. A total number of 19 mammal species from 120 sampling points were recorded. Contiguous forest had the highest number of species compared to the urban forest patches. Sunda Pangolin and Asian Tapir were the only conservation priority species recorded in the urban forest patches and contiguous forest, respectively. Top predators such as Malayan Tiger and Melanistic Leopard were completely absent from the forest patches as well as the contiguous forest. This was reflected by the abundance of wild boars. We found that mammal species richness increased with the number of trees with DBH less than 5 cm, trees with DBH more than 50 cm, and dead standing trees. In the future, the remaining mammal species in the urban forest patches are expected to be locally extinct as connecting the urban forest patches may be infeasible due to land scarcity. Hence, to maintain the ecological integrity of urban forest patches, we recommend that stakeholders take intervention measures such as reintroduction of selected species and restocking of wild populations in the urban forest patches to regenerate the forest ecosystems.
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- 2018
17. Ranging behaviour, activity, habitat use, and morphology of the Malay civet (Viverra tangalunga) on Peninsular Malaysia and comparison with studies on Borneo and Sulawesi
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Jennings, Andrew P., Zubaid, Akbar, and Veron, Geraldine
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- 2010
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18. Isolation and characterisation of microsatellite loci in the papillose woolly bat, Kerivoula papillosa (Chiroptera: Vespertilionidae)
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Struebig, Matthew J., Horsburgh, Gavin J., Pandhal, Jagroop, Triggs, Alison, Zubaid, Akbar, Kingston, Tigga, Dawson, Deborah A., and Rossiter, Stephen J.
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- 2008
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19. Chemical Ecology of Fruit Bat Foraging Behavior in Relation to the Fruit Odors of Two Species of Paleotropical Bat-Dispersed Figs (Ficus hispida and Ficus scortechinii)
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Hodgkison, Robert, Ayasse, Manfred, Kalko, Elisabeth K. V., Häberlein, Christopher, Schulz, Stefan, Mustapha, Wan Aida Wan, Zubaid, Akbar, and Kunz, Thomas H.
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- 2007
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20. Morphological and ecological correlates of coexistence in Malaysian fruit bats (Chiroptera: Pteropodidae)
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Campbell, Polly, Schneider, Christopher J., Zubaid, Akbar, Adnan, Adura M., and Kunz, Thomas H.
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Fruit bats -- Behavior ,Fruit bats -- Physiological aspects ,Morphology (Animals) -- Research ,Zoology and wildlife conservation - Abstract
Niche theory predicts that coexisting species should differ ecologically, morphologically, or behaviorally in ways that minimize competition. We used an ecomorphological approach to determine how coexisting species in the Old World fruit bat genus, Cynopterus, assort in morphological and ecological space. The study was conducted in peninsular Malaysia where 4 species of Cynopterus are broadly sympatric. Interspecific separation in resource use was estimated along 3 main axes: habitat, based on abundance across a habitat gradient at 2 sites; trophic niche, inferred from a suite of cranial and postcranial characters; and locomotory behavior and efficiency, inferred from wing morphology. Habitat associations, overall size, and the size and shape of the trophic apparatus were all important in separating 2 or more species, whereas interspecific differences in wing morphology were minor. In combination, the results of this study suggest that relatively minor separation among Cynopterus species pairs along single axes of resource use is sufficient to counteract overlap on other axes, and permit the coexistence of potential competitors. Key words: body size, competition, Cynopterus, ecomorphology, frugivore, resource partitioning, trophic niche
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- 2007
21. Hipposideros kunzi M Urray & Khan & Kingston & Zubaid & Campbell 2018, sp. nov
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Murray, Susan W., Khan, Faisal A. A., Kingston, Tigga, Zubaid, Akbar, and Campbell, Polly
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Hipposideros kunzi ,Chiroptera ,Mammalia ,Animalia ,Biodiversity ,Chordata ,Hipposideridae ,Taxonomy ,Hipposideros - Abstract
Hipposideros kunzi sp. nov. Murray, Khan, Kingston, Akbar, and Campbell Kunz’s bicolored leaf-nosed bat Hipposideros bicolor (Temminck, 1834), part. Hipposideros atrox (Andersen, 1918), part. Hipposideros bicolor atrox (Kitchener et al., 1996), part. Hipposideros bicolor- 142 (Kingston et al., 2001) Hipposideros atrox (Douangboupha et al., 2010) Etymology The species is named after Thomas H. Kunz in recognition of his many contributions to the ecology and conservation of bats, and his dedication to the promotion of bat research in Malaysia. Holotype Texas Tech University TTU 108222 (tissue and karyotype TK 152065; field number VJS 155), adult ♂, body in alcohol, skull extracted, collected and photographed by Robert J. Baker on 6 August 2006 during TTU-UNIMAS Sowell Expedition (Khan et al., 2008). Although the echolocation calls were not recorded for the holotype and the paratypes described here, all of the type specimens had mtDNA haplotypes consistent with the 142 kHz phonic group. This was further supported through comparisons of the noseleaf morphology with that of individuals for which the echolocation call frequency was known. Measurements (in mm) — forearm length: 43.31; fifth, fourth, and third metacarpals lengths, respectively: 32.20, 33.87, 32.88. Length of first and second phalanges of third digits, respectively: 17.47, 16.46; tail length: 25.0; hind-foot length: 7.0; tibia length: 19.70; ear height: 17; body mass: 6.5 g; anterior noseleaf width: 4.66. Skull measurements are provided in Table 3. Type locality Bukit Rengit, Krau Wildlife Reserve, Pahang, Peninsular Malaysia (WGS 84 03°35’45.6”N, 102°10’ 59.0”E — approximate elevation 72 m). The specimen was collected using a harp trap set across a trail near the Institute of Biological Diversity at Bukit Rengit. Paratypes Texas Tech University TTU 108417 (tissue and karyotype number TK 152001), adult ♂ (4 August 2006), dry skin and skull with slight crack in brain case; TTU 108209 (tissue number TK 152051), adult ♀ (6 August 2006), dry skin (housed at the Universiti Malaysia Sarawak, but missing) and skull (housed at the Texas Tech University). Both TTU 108417 and TTU 108209 were captured in Krau Wildlife Reserve (03°35’45.6”N, 102°10’59.0”E — elevation 72 m). Specimen TK 152992, adult ♀ (17 May 2008), dry skin and skull in Department of Wildlife and National Park (DWNP), Malaysia; specimen TK 153519, adult ♀ (20 May 2008), alcohol preserved specimen at Universiti Malaysia Sarawak. Both TK152992 and 153519 were collected by FAAK during DWNP biodiversity inventory at Kuala Atok, Pahang, peninsular Malaysia (04°16.281’N 102°22.316’E — approximate elevation 85 m). Taxonomic notes All specimens previously referred to H. atrox (Douangboubpha et al., 2010) and H. bicolor -142 are here referred to H. kunzi sp. nov. Based on length of forearm, Hill (1963) likely included both H. bicolor and H. kunzi as H. bicolor atrox, although the majority of these individuals are probably H. kunzi based on length of forearm (p. 29, Fig. 4). We cautiously assign the individuals of H. bicolor atrox from both Hill et al. (1986) and Zubaid and Davison (1987) to H. kunzi. It is unclear where the bats were collected, but it is suggested they were captured in Northern peninsular Malaysia, which would suggest that they are indeed H. kunzi. In his description of the new species Hipposideros gentilis, Andersen (1918) described the new subspecies H. g. atrox as having a wide range of forearm lengths that span both H. bicolor and H. kunzi: 42–46.2 mm (Andersen, 1918: 380). Thus he likely measured both individuals of H. bicolor and H. kunzi for the subspecies description. Description This is a small to medium-sized hipposiderid bat in the H. bicolor group with a forearm length ranging from 38.8 to 45.6 mm (mean = 42.9 mm ± 0.9), tibia length of 17.1 to 20.6 mm (mean = 18.8 mm ± 0.5), and mass varying from 6.0 to 12.0 g (mean = 8.5 g ± 0.9 — Table 2). The dorsal pelage varies from medium or dark brown to bright orange, but is always bicolored with a white base. The ventral pelage ranges from buff or golden, to bright orange (Fig. 9). The wing and tail membranes are dark brown, as are the ears. The ears are large (mean = 17.6 mm ± 0.6) and rounded with a bluntly pointed tip. The noseleaf lacks supplementary lateral leaflets and has an internarial septum that is generally triangular in shape (wider at the base — Fig. 9). The posterior and anterior portions of the nose are dark brown-grey in color, while the central part of the noseleaf is more flesh colored. The tail is long (mean = 28.7 mm ± 1.8), extending the full length of the uropatagium. The fifth metacarpal is about 74% of forearm length and the first phalanx of the third digit is about 53% of third metacarpal. Echolocation call frequency of the CF component ranges from 133.2 to 147.5 kHz, with a mean call frequency of 143.1 ± 2.0 kHz (Fig. 5 and Table 2). Hipposideros kunzi has a small and elongate skull with the greatest length of skull (GSL) ranging from 17.69 to 19.13 mm (mean = 18.31 ± 0.33 mm). The skull is slightly wider across the zygomata (mean = 9.2 ± 0.2 mm) compared to across the mastoids (mean = 9.2 ± 0.2 mm — Table 3). The distal process of the jugal bone is low and not well defined (Fig. 6). The rostrum is well developed with six nasal inflations. The sagittal crest is well developed and is taller more anteriorly. The constriction behind the orbits is well defined and narrower than the rostrum. The upper toothrow is shorter (CM 3 mean = 6.3 ± 0.1 mm) than the lower (CM 3 mean = 6.8 ± 0.1 mm). The upper incisor is small and both the upper and lower canines are of moderate size. The upper premolar (P 2) is minute and extruded from the toothrow, while the lower premolar (P 2) is about half the height of the second premolar (P 4). The species is sexually dimorphic with respect to magnitude of certain skull measurements: despite being smaller than females, males have longer and taller skulls and longer canines. Comparisons with similar species Hipposideros kunzi is one of several Hipposideros species described from the Indo-Malayan region, which superficially resemble H. bicolor and lack supplementary leaflets adjacent to the noseleaf. In peninsular Malaysia and southern Thailand, H. kunzi most closely resembles, and is easily confused with, both H. bicolor and H. pomona. Compared to H. bicolor, H. kunzi has a higher echolocation call frequency (Table 2), is generally smaller in body size (Table 2), and has a shorter but wider skull (Table 3 and Fig. 9). In addition, H. kunzi has a narrower anterior noseleaf (Holotype: 4.66 mm) that is slightly curved upwards compared to H. bicolor, which has a wider anterior noseleaf (4.94−5.46 mm, n = 5) that is flattened and square in appearance (Kingston et al., 2006), lighter in color, and has rudimentary supplementary lateral leaflets (Fig. 9). The noseleaf characters, however, are only useful if both species are available for comparison in the field. Based on appearance (Murray et al., 2012: figure S1), echolocation call frequency (H. pomona: 136.4 –139.4 kHz, n = 3), overall size (H. pomona length of forearm: 42.7–44.8 mm, n = 3), and skull size and shape (Fig. 7), it is very difficult to distinguish H. kunzi from H. pomona. The main morphological difference between these species is ear height, with H. pomona having a much larger ear compared to H. kunzi: 20.0– 21.5 mm (n = 3) versus 15.0– 19.5 mm (mean = 17.6 mm — Table 2), respectively. Hipposideros pomona and H. kunzi, however, are not closely related based on both mitochondrial and nuclear DNA (Murray et al., 2012; this study). Despite being sister taxa (Fig. 2), having similar appearance, and overlapping in echolocation call frequencies (Kingston et al., 2000), individuals of H. kunzi and H. cineraceus -B are easily distinguished using body size (H. kunzi being larger; Table 2) and nose morphology: H. cineraceus -B has a small swelling in its internarial septum (Fig. 9). Reproduction In both 2003 and 2004 in peninsular Malaysia, palpably pregnant females were captured in February and March, and lactating individuals were captured from April through September. Similarly, Nurul-Ain et al. (2017) found females from Krau Wildlife Reserve and Samad Cave (ca. 10 Km from Krau) to be seasonally monestrous, with a peak in pregnancy in March, and lactation in June, although lactating females were captured from April through October. Distribution, ecological notes, and conservation status Currently, H. kunzi has only been documented on the Malay Peninsula, between 3°12’N in peninsular Malaysia (Fig. 1, site 12) and the Isthmus of Kra at 10°41’N in Southern Thailand (this study; Douangboubpha et al., 2010). Despite extensive sampling, Douangboubpha and colleagues did not capture H. kunzi in Central or Northern Thailand, suggesting that the northern limit of this species’ range is restricted to the Sundaic biogeographical region, as delimited by the Isthmus of Kra (Douangboubpha et al., 2010). While we did not sample bats in the southern tip of peninsular Malaysia, we expect that H. kunzi should occur throughout the peninsula where suitable habitat exists. Lim et al. (2014) reported a positive correlation between the abundance of H. kunzi (as H. bicolor -142) and latitude across 15 forest sites in peninsular Malaysia, with few or no captures at sites in the southern third of the Peninsula (which may be attributable to the lack of karst). In Singapore, H. bicolor (= H. kunzi) is considered locally extinct due to habitat loss (Pottie et al., 2005). Douangboubpha et al. (2010) included Sumatra in the distribution of H. atrox (= H. kunzi), but because of the high level of cryptic diversity within this group it is impossible to determine whether individuals from Sumatra are conspecific with H. kunzi without genetic data. Based on limited sampling in Borneo (Fig. 1), there is currently no evidence that H. kunzi occurs in Borneo. In peninsular Malaysia, individuals of H. kunzi were captured at all sampling sites (Fig. 1) and were relatively common and widespread in karst regions, but were also common in some non-karst areas (e.g., Krau Wildlife Reserve). Colonies ranged in size from a few individuals to several hundred and were found in caves, mines, and rock crevices. Colonies of H. kunzi were almost always found in caves housing other bat species; these included H. cervinus, H. larvatus, H. armiger, Rhinolophus malayanus, R. stheno, Myotis siligorensis, M. ater, Miniopterus medius, and Taphozous melanopogon. Based on captures and wing morphology, H. kunzi is believed to forage in forested habitats; Douangboupha et al. (2010) suggested that H. kunzi forages in diverse forest types and may be somewhat tolerant of anthropogenically modified landscapes that retain vegetative structure (e.g., secondary forest, rubber and orchard plantations). Given the species’ distribution across the Malay peninsula into Southern Thailand, widespread occurrence and local abundance, we currently recommend H. kunzi be evaluated as a species of Least Concern, following IUCN Red List Categories and Criteria v. 3.1 (IUCN, 2012). Loss and disturbance of caves and foraging habitats would support a higher category of risk. We and others have noted the high levels of cryptic diversity in Hipposideros (e.g., Esselstyn et al., 2012; Murray et al., 2012; Foley et al., 2017). We hope that our taxonomic delineation of a new member of the bicolor species group, H. kunzi, will motivate further efforts to resolve the taxonomy of remaining cryptic lineages. Such efforts are essential to the conservation of the remarkable diversity that exists within this already speciose genus.
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- 2018
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22. Land use conversion from peat swamp forest to oil palm agriculture greatly modifies microclimate and soil conditions
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Anamulai, Subasini, Sanusi, Ruzana, Zubaid, Akbar, Lechner, Alex Mark, Ashton-Butt, Adham, Azhar, Badrul, Anamulai, Subasini, Sanusi, Ruzana, Zubaid, Akbar, Lechner, Alex Mark, Ashton-Butt, Adham, and Azhar, Badrul
- Abstract
Oil palm (Elaeis guineensis) agriculture is rapidly expanding and requires large areas of land in the tropics to meet the global demand for palm oil products. Land cover conversion of peat swamp forest to oil palm (large- and small-scale oil palm production) is likely to have negative impacts on microhabitat conditions. This study assessed the impact of peat swamp forest conversion to oil palm plantation on microclimate conditions and soil characteristics. The measurement of microclimate (air temperature, wind speed, light intensity and relative humidity) and soil characteristics (soil surface temperature, soil pH, soil moisture, and ground cover vegetation temperature) were compared at a peat swamp forest, smallholdings and a large-scale plantation. Results showed that the peat swamp forest was 1.5–2.3 °C cooler with significantly greater relative humidity, lower light intensities and wind speed compared to the smallholdings and large-scale plantations. Soil characteristics were also significantly different between the peat swamp forest and both types of oil palm plantations with lower soil pH, soil and ground cover vegetation surface temperatures and greater soil moisture in the peat swamp forest. These results suggest that peat swamp forests have greater ecosystem benefits compared to oil palm plantations with smallholdings agricultural approach as a promising management practice to improve microhabitat conditions. Our findings also justify the conservation of remaining peat swamp forest as it provides a refuge from harsh microclimatic conditions that characterize large plantations and smallholdings.
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- 2019
23. Land use conversion from peat swamp forest to oil palm agriculture greatly modifies microclimate and soil conditions
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Anamulai, Subasini, primary, Sanusi, Ruzana, additional, Zubaid, Akbar, additional, Lechner, Alex M., additional, Ashton-Butt, Adham, additional, and Azhar, Badrul, additional
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- 2019
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24. Selective logging causes the decline of large-sized mammals including those in unlogged patches surrounded by logged and agricultural areas
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Jamhuri, Jamaluddin, primary, Samantha, Liza D., additional, Tee, Sze Ling, additional, Kamarudin, Norizah, additional, Ashton-Butt, Adham, additional, Zubaid, Akbar, additional, Lechner, Alex M., additional, and Azhar, Badrul, additional
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- 2018
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25. Selective logging causes the decline of large-sized mammals including those in unlogged patches surrounded by logged and agricultural areas
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Jamhuri, Jamaluddin, Samantha, Liza D., Tee, Sze Ling, Kamarudin, Norizah, Butt, Adham Ashton, Zubaid, Akbar, Lechner, Alex Mark, Azhar, Badrul, Jamhuri, Jamaluddin, Samantha, Liza D., Tee, Sze Ling, Kamarudin, Norizah, Butt, Adham Ashton, Zubaid, Akbar, Lechner, Alex Mark, and Azhar, Badrul
- Abstract
Legal and illegal logging is prevalent throughout the tropics, impacting on natural habitat and wildlife. This study aimed to investigate the sensitivity of forest mammals to selective logging in the lowland dipterocarp forests of South-West Peninsular Malaysia and identify the underlying factors that determine species occurrence. A total of 120 camera trap locations were deployed within selectively logged and unlogged forests. We found that unlogged forest had greater wildlife occurrences compared to selectively logged forests, including two endangered mammal species not found in logged forest. Forest vegetation structure characteristics such as the abundance of lianas, large trees, saplings, palms, bamboo and seedlings were associated with mammal species richness. Mammal species richness increased with number of forest trees, particularly those with a DBH of > 45 cm, but this was limited to high altitude forest. Worryingly, we did not detect any large mammalian apex predators such as leopards or tigers in either unlogged or selectively logged forests. The absence of these animals may be the result of poaching, habitat degradation or other pressures; these mammals are expected to be present in intact forests in Peninsular Malaysia. Restoring logged forests and preserving the remaining unlogged lowland dipterocarp forests are critically important to safeguard mammalian biodiversity in the region. Besides that, we recommend that conventional logging practices are replaced with reduced impact logging methods.
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- 2018
26. The systematic position of Hypsugo macrotis (Chiroptera: Vespertilionidae) and a new record from Peninsular Malaysia
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Lim, Lee-Sim, Csorba, Gábor, Wong, Cheng-Min, Zubaid, Akbar, Rahman, Sultana Parvin Habeebur, Kumaran, Jayaraj Vijaya, Khan, Faisal Ali Anwarali, Najimudin, Joe Chun- Chia Huang Nazalan, and Görföl, Tamás
- Subjects
Biodiversity ,Taxonomy - Abstract
Lim, Lee-Sim, Csorba, Gábor, Wong, Cheng-Min, Zubaid, Akbar, Rahman, Sultana Parvin Habeebur, Kumaran, Jayaraj Vijaya, Khan, Faisal Ali Anwarali, Najimudin, Joe Chun- Chia Huang Nazalan, Görföl, Tamás (2016): The systematic position of Hypsugo macrotis (Chiroptera: Vespertilionidae) and a new record from Peninsular Malaysia. Zootaxa 4170 (1): 169-177, DOI: http://doi.org/10.11646/zootaxa.4170.1.10
- Published
- 2016
27. A New Species in the Hipposideros bicolor Group (Chiroptera: Hipposideridae) from Peninsular Malaysia
- Author
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Murray, Susan W., primary, Khan, Faisal A. A., additional, Kingston, Tigga, additional, Zubaid, Akbar, additional, and Campbell, Polly, additional
- Published
- 2018
- Full Text
- View/download PDF
28. Logged peat swamp forest supports greater macrofungal biodiversity than largescale oil palm plantations and smallholdings
- Author
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Rajihan, Siti Noor Shuhada, Salim, Sabiha, Nobilly, Frisco, Mukhtar Ahmad, Zubaid Akbar, Md. Sharif, Badrul Azhar, Rajihan, Siti Noor Shuhada, Salim, Sabiha, Nobilly, Frisco, Mukhtar Ahmad, Zubaid Akbar, and Md. Sharif, Badrul Azhar
- Abstract
Intensive land expansion of commercial oil palm agricultural lands results in reducing the size of peat swamp forests, particularly in Southeast Asia. The effect of this land conversion on macrofungal biodiversity is, however, understudied. We quantified macrofungal biodiversity by identifying mushroom sporocarps throughout four different habitats; logged peat swamp forest, large-scale oil palm plantation, monoculture, and polyculture smallholdings. We recorded a total of 757 clusters of macrofungi belonging to 127 morphospecies and found that substrates for growing macrofungi were abundant in peat swamp forest; hence, morphospecies richness and macrofungal clusters were significantly greater in logged peat swamp forest than converted oil palm agriculture lands. Environmental factors that influence macrofungi in logged peat swamp forests such as air temperature, humidity, wind speed, soil pH, and soil moisture were different from those in oil palm plantations and smallholdings. We conclude that peat swamp forests are irreplaceable with respect to macrofungal biodiversity. They host much greater macrofungal biodiversity than any of the oil palm agricultural lands. It is imperative that further expansion of oil palm plantation into remaining peat swamp forests should be prohibited in palm oil producing countries. These results imply that macrofungal distribution reflects changes in microclimate between habitats and reduced macrofungal biodiversity may adversely affect decomposition in human-modified landscapes.
- Published
- 2017
29. Man-made maternity roost selection by Scotophilus kuhlii (Lesser Asiatic yellow bat) in two anthropogenically altered habitats
- Author
-
Abd Rahman, Nuratiqah, Md Sharif, Badrul Azhar, Yaakop, Salmah, Ng, Yong Foo, Ting, J. S., Mukhtar Ahmad, Zubaid Akbar, Abd Rahman, Nuratiqah, Md Sharif, Badrul Azhar, Yaakop, Salmah, Ng, Yong Foo, Ting, J. S., and Mukhtar Ahmad, Zubaid Akbar
- Abstract
Scotophilus kuhlii is a highly gregarious bat that thrives in anthropogenically altered habitats readily roosting in man-made structures. Although widespread, information on the ecology of S. kuhlii is very scarce in Southeast Asia. We conducted this study to determine if the females used the same day roost as a maternity roost in buildings in an agricultural and suburban habitat from July 2013 to April 2015. The females were found to use the same day roost as a maternity roost as the buildings provided a higher temperature and more stable thermal conditions as compared to the ambient temperature. We found that there was a significant positive relationship between roost microclimate and ambient microclimate. Based on the observation of the external body condition, females were found to be seasonally monoestrous. Our findings are useful for conservation and management of these synantrophic bats where natural roost sites are lacking and in managing human-bat conflicts.
- Published
- 2017
30. Logged peat swamp forest supports greater macrofungal biodiversity than large-scale oil palm plantations and smallholdings
- Author
-
Rajihan, Siti Noor Shuhada, Salim, Sabiha, Nobilly, Frisco, Mukhtar Ahmad, Zubaid Akbar, Md Sharif, Badrul Azhar, Rajihan, Siti Noor Shuhada, Salim, Sabiha, Nobilly, Frisco, Mukhtar Ahmad, Zubaid Akbar, and Md Sharif, Badrul Azhar
- Abstract
Intensive land expansion of commercial oil palm agricultural lands results in reducing the size of peat swamp forests, particularly in Southeast Asia. The effect of this land conversion on macrofungal biodiversity is, however, understudied. We quantified macrofungal biodiversity by identifying mushroom sporocarps throughout four different habitats; logged peat swamp forest, large-scale oil palm plantation, monoculture, and polyculture smallholdings. We recorded a total of 757 clusters of macrofungi belonging to 127 morphospecies and found that substrates for growing macrofungi were abundant in peat swamp forest; hence, morphospecies richness and macrofungal clusters were significantly greater in logged peat swamp forest than converted oil palm agriculture lands. Environmental factors that influence macrofungi in logged peat swamp forests such as air temperature, humidity, wind speed, soil pH, and soil moisture were different from those in oil palm plantations and smallholdings. We conclude that peat swamp forests are irreplaceable with respect to macrofungal biodiversity. They host much greater macrofungal biodiversity than any of the oil palm agricultural lands. It is imperative that further expansion of oil palm plantation into remaining peat swamp forests should be prohibited in palm oil producing countries. These results imply that macrofungal distribution reflects changes in microclimate between habitats and reduced macrofungal biodiversity may adversely affect decomposition in human-modified landscapes.
- Published
- 2017
31. Logged peat swamp forest supports greater macrofungal biodiversity than large‐scale oil palm plantations and smallholdings
- Author
-
Shuhada, Siti Noor, primary, Salim, Sabiha, additional, Nobilly, Frisco, additional, Zubaid, Akbar, additional, and Azhar, Badrul, additional
- Published
- 2017
- Full Text
- View/download PDF
32. Comparison of the ranging behavior of Scotophilus kuhlii (Lesser Asiatic Yellow Bat) in agricultural and urban landscape
- Author
-
Nur Ubaidah, Syafrinna, Zubaid Akbar, Nur Atiqah, and Ng Yong Foo
- Subjects
Geography ,Habitat ,biology ,Food availability ,Agriculture ,business.industry ,Ecology ,Home range ,Space use ,Urban landscape ,biology.organism_classification ,business ,Scotophilus kuhlii - Abstract
Knowledge on home range sizes and movement patterns of animals through the environment is crucial for determining effects of habitat disturbance and fragmentation. To gauge the effects of land-use changes on Scotophilus kuhlii, a telemetric study was conducted between February 2014 and April 2014 in Tasik Chini, Pahang and Universiti Kebangsaan Malaysia (UKM), Bangi Campus. The home range sizes and movement patterns of S. kuhlii inhabiting agricultural landscape (Tasik Chini, Pahang) versus urban landscape (UKM) were compared. A total of ten individuals were successfully radio-tracked. Comparison of home range sizes of both sexes showed male S. kuhlii at Tasik Chini have larger mean home range sizes compared to UKM while female S.kuhlii in UKM have larger mean home range sizes compared to Tasik Chini. All individuals from both localities showed random movement. It is suggested that the home range and activity patterns might be influenced by food availability in the study area, food preferences and diet segregation and breeding behavior. This study provides baseline information on habitat utilization by S. kuhlii in relation to habitat perturbations.
- Published
- 2015
33. Resource distribution and social structure in harem-forming Old World fruit bats: variations on a polygynous theme
- Author
-
Adura M. Adnan, Zubaid Akbar, Polly Campbell, and Thomas H. Kunz
- Subjects
Harem ,Old World ,Ecology ,Resource distribution ,Zoology ,Animal Science and Zoology ,Female group ,Interspecific competition ,Biology ,Mating ,Spatial distribution ,Polygyny ,Ecology, Evolution, Behavior and Systematics - Abstract
The prediction that the spatial dispersion of resources that are important to females should dictate female dispersion and male mating tactics has not been previously tested in harem-forming bats. We investigated the relation between the estimated spatial distribution of available roosts, female group size, male roost fidelity and the strength of social associations in two species of harem-forming fruit bats in the genus Cynopterus. We evaluated the daily movements of individuals and groups among roosts using radiotelemetry and roost censuses at two sites in northern peninsular Malaysia. We found a high correspondence between the distribution of roost sites, female group size and male behaviour, supporting the prediction that clumped resources would promote female aggregation and high roost fidelity in males. However, there were significant interspecific differences in the strength of male–female associations, which suggested that, where roosts are abundant and similar in quality, regardless of their spatial distribution, the potential for males to monopolize mates depends on whether females move among roosts with, or independently of, males. We propose that interspecific differences in female behaviour may be related to the costs of moving between clumped versus randomly dispersed males.
- Published
- 2006
34. Home range patterns and sizes of four understorey bird species in secondary peat swamp forests of Selangor, Malaysia.
- Author
-
HAWA, AINIL, AZHAR, BADRUL, TOP, MARINA MOHD, and ZUBAID, AKBAR
- Subjects
WILDLIFE conservation ,HOME range (Animal geography) ,PEAT ,SWAMPS ,CONSERVATION of natural resources - Abstract
Understanding movement patterns and home range of animals provide valuable information regarding animal ecology and conservation management. The home range of Yellow-vented bulbul (Pycnonotus goiavier), Zebra dove (Geopelia striata), Pink-necked green pigeon (Treron vernan), and Spotted dove (Streptopelia chinensis) were studied in Raja Musa Forest Reserve in the North Selangor Peat Swamp Forest. A telemetric study was conducted daily within two weeks from October 2013 until February 2014. Kruskal Wallis test showed no significant difference of the home range size among study species for 23 individual birds based on the 95% MCP (H=0.58, P=0.902), Kernel (H=0.71, P=0.871), and HM (H=1.79, P=0.618) as well on the 50% MCP (H=0.28, P=0.964), Kernel (H=0.56, P=0.906), and HM (H=1.79, P=0.618). The Pink-necked green-pigeon recorded the largest average home range size with 48.78 ha, followed by the Yellow-vented bulbul (36.19 ha), Spotted dove (36.13 ha), and Zebra dove (32.98 ha) based on 95% MCP. The study concludes that several factors determine bird home range including food availability in the study area, food inclination, foraging and diet segregation and breeding behaviour. [ABSTRACT FROM AUTHOR]
- Published
- 2019
35. Genetics of yield and its components in egg plant (Solanum melongena L.)
- Author
-
O. Suhana, O. Mohamad, M. Abd. Rahman, M.A. Zubaid Akbar, O. Suhana, O. Mohamad, M. Abd. Rahman, and M.A. Zubaid Akbar
- Abstract
Inheritance study for yield and its components were conducted in five selected parents of brinjal namely MTE 1, MTE 2, Terung Bujur, Terung Telunjuk and NTH080077. Parents, F1 and F2 progenies were evaluated under field condition at MARDI, Serdang. Data on vegetative and yield components were recorded for parents F1 and F2 populations. Genetics study for inheritance were evaluated, and it showed that days to flower, fruit number per plant and fruit weight were observed as additive gene effect. Whereas, plant height and yield per plant were dominance gene effect. High heritability and high genetic advance were observed for fruit number per plant, fruit weight and yield per plant. Low and moderate phenotypic and coefficient of variations were observed for all traits. Moderate phenotypic and coefficient of variations were expressed by fruit number per plant, fruit weight and yield per plant. The selection of genotypes with high heritability coupled with genetic advance for these traits indicates the potential for crop improvement through selection.
- Published
- 2016
36. Depauperate avifauna in tropical peat swamp forests following logging and conversion to oil palm agriculture: evidence from mist-netting data
- Author
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Ainil Hawa, Badrul Azhar, Mohd Top, Marina, Zubaid, Akbar, Ainil Hawa, Badrul Azhar, Mohd Top, Marina, and Zubaid, Akbar
- Abstract
Increased demand for oil palms has led to a massive expansion of logging and conversion of peat swamp forests in Southeast Asia. Although palm oil is a primary driver of economic growth, the unsustainable expansion of the oil palm industry has led to the widespread degradation of peat swamp forests. Birds have been studied to determine their responses to landscape changes in the North Selangor Peat Swamp Forest (NSPSF). We captured 1045 birds from 72 species of the NSPSF and 168 individual birds from 13 species in oil palm plantations using mist-netting. Our results show that peat swamp forest supports more bird species than the oil palm areas. Non-metric Multidimensional Scaling revealed that both vegetation types had an influence on bird species composition. SIMPER analysis also showed that the percentage of the assemblage similarity within the oil palm areas was 51.30 %, while it was 31.32 % in the peat swamp. We found that the populations of frugivores, insectivores, and omnivores were significantly higher in the peat swamp forest, whereas there was no significant difference in the granivores between the two sites. To conserve peat swamp forests, stakeholders should implement habitat restoration, maintain landscape connectivity, and retain a forest area network.
- Published
- 2016
37. Roosting ecology and social organization of the spotted-winged fruit bat, Balionycteris maculata (Chiroptera: Pteropodidae), in a Malaysian lowland dipterocarp forest
- Author
-
Robert Hodgkison, Sharon T. Balding, Thomas H. Kunz, and Zubaid Akbar
- Subjects
Balionycteris maculata ,Harem ,biology ,Reproductive success ,Ecology ,Foraging ,Epiphyte ,biology.organism_classification ,Mating system ,Polygyny ,Ecology, Evolution, Behavior and Systematics ,Pteropodidae - Abstract
The aims of this study were to investigate the roosting ecology and social organization of the spotted-winged fruit bat, Balionycteris maculata (Megachiroptera), within an old-growth Malaysian dipterocarp forest, and test the hypothesis that males spend a significantly greater proportion of the night in the immediate vicinity of their day roosts than females. Balionycteris maculata roosted in cavities and formed small harem groups that consisted of one adult male accompanied by up to nine adult females and their dependent young. Both male and female bats foraged locally, within approximately 1 km of their roost sites. However, in contrast to females, which remained away from the roost site throughout the night, both harem and solitary adult males divided their nightly activity between foraging and returning to their roost sites. Individual females were also found roosting sequentially with up to three different males. Hence, these results suggest that B. maculata has a resource-defence polygynous mating system, in which the roost cavity may represent a critical and defendable resource by which males recruit and gain improved reproductive access to females. Roost cavities occupied by B. maculata were found within a number of different forest structures, including ant nests, termite nests and the root masses of epiphytes. The consistent shape and position of the cavities, along with a single observation of cavity enlargement, provide the first evidence of roost-cavity excavation, by a megachiropteran bat, within the nests of social insects. Although the cues by which females select their roost sites are unclear, some aspect of roost cavity size, or condition, may provide a possible means by which females can assess the reproducÍtive fitness of potential mates.
- Published
- 2003
38. ALTERNATION OF ECHOLOCATION CALLS IN 5 SPECIES OF AERIAL-FEEDING INSECTIVOROUS BATS FROM MALAYSIA
- Author
-
Thomas H. Kunz, Zubaid Akbar, Gareth Jones, and Tigga Kingston
- Subjects
Forage (honey bee) ,Ecology ,biology ,Cheiromeles torquatus ,Insectivore ,Human echolocation ,biology.organism_classification ,Hesperoptenus blanfordi ,Predation ,Genetics ,Pipistrellus stenopterus ,Animal Science and Zoology ,Molossidae ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation - Abstract
We describe design of echolocation signals in 5 species of aerial-hawking insectivorous bats from Malaysia. These bats forage in open spaces above the forest or in large clearings and belong to 2 families: Molossidae (Chaerephon johorensis, Mops mops, Cheiromeles torquatus) and Vespertilionidae (Hesperoptenus blanfordi, Pipistrellus stenopterus). As is typical for aerial-hawking bats, all 5 species produced narrowband calls of long duration (6‐21 ms) and low peak frequency (16‐44 kHz). However, sequences recorded from bats flying at high altitude ( .10 m) were characterized by an alternation between calls that differed in frequency of maximum energy (peak frequency), switching between high- and low-frequency calls. In some species, the types of calls also differed in duration and sound pressure level. We consider possible implications of the alternation of types of calls for the detection of prey in open spaces.
- Published
- 2003
39. Species richness in an insectivorous bat assemblage from Malaysia
- Author
-
Charles M. Francis, Zubaid Akbar, Tigga Kingston, and Thomas H. Kunz
- Subjects
biology ,Ecology ,Murininae ,Wildlife ,Kerivoulinae ,Species diversity ,Insectivore ,Rainforest ,Species richness ,biology.organism_classification ,Hipposideridae ,Ecology, Evolution, Behavior and Systematics - Abstract
Estimates of insectivorous bat diversity in the Palaeotropics have largely been hampered by the lack of long-term studies employing appropriate capture techniques. Using a variety of trapping methods, 45 insectivorous bat species were captured in approximately 3 km2 of primary dipterocarp rain forest in Malaysia over 8 y. The cumulative site list for Kuala Lompat Research Station, Krau Wildlife Reserve, now stands at 51 insectivorous species. Although this is likely still not a complete list, it is already one of the most species-rich in the world. We attribute much of our success in recording this diversity to the extensive use of harp traps. Of the 45 species, 38 were captured in an intensive harp-trapping programme (> 1030 harp-trap nights) of the forest interior (22 species exclusively so). Insectivorous bats of the forest interior are thus a key component of Old World bat diversity, particularly in South-East Asia, and are dominated by taxa capable of detecting and capturing prey in cluttered environments (Hipposideridae, Rhinolophidae, Kerivoulinae and Murininae).
- Published
- 2003
40. Elevational Diversity Pattern of Non-volant Small Mammals on Mount Nuang, Hulu Langat, Selangor
- Author
-
Zubaid Akbar, Shukor Md. Nor, and Zainab Batin
- Subjects
Geography ,Ecology ,media_common.quotation_subject ,Molecular Medicine ,Cell Biology ,Mount ,Diversity (politics) ,media_common - Published
- 2001
41. SOCIAL CALLS IN CLEAR-WINGED WOOLLY BATSKERIVOULA PELLUCIDAFROM MALAYSIA
- Author
-
Zubaid Akbar, Gareth Jones, Thomas H. Kunz, and Tigga Kingston
- Subjects
Signal design ,Ecology ,biology ,Duration (music) ,Zoology ,Human echolocation ,biology.organism_classification ,Short duration ,Kerivoula pellucida ,Ecology, Evolution, Behavior and Systematics ,Southeast asia - Abstract
Kerivoula pellucida is a small (4.5 g) vespertilionid bat, which forages in the understorey of tropical rainforests in Southeast Asia. Most echolocation signals are characteristic for the subfamily (very high-frequency, broadband FM calls (sweeping down from 178 kHz to 58 kHz) of low intensity and short duration (< 3.0 ms)), but this species also produces stereotypical calls of a markedly different structure. The arrangement of signal elements in these calls is unusual, and we present here a detailed analysis of calls from thirteen adult individuals (nine males and four females). These multiharmonic calls are of much lower frequency (fundamental peak frequency of 36 kHz), higher intensity and longer duration (12.0 ms) than the orientation calls, and are composites comprising a long quasi-constant frequency (QCF) syllable followed by an upward frequency modulated sweep (UFM). From considerations of signal design and preliminary field observations, we consider possible functions of these calls.
- Published
- 2000
42. Echolocation signal design in Kerivoulinae and Murininae (Chiroptera: Vespertilionidae) from Malaysia
- Author
-
Zubaid Akbar, Gareth Jones, Tigga Kingston, and Thomas H. Kunz
- Subjects
Murina ,biology ,Range (biology) ,Ecology ,Kerivoula ,Foraging ,Kerivoulinae ,Zoology ,Human echolocation ,biology.organism_classification ,Phoniscus ,Murininae ,Animal Science and Zoology ,Ecology, Evolution, Behavior and Systematics - Abstract
Echolocation signal design in nine syntopic vespertilionid bats from the Malaysian rain forest understorey was studied. Four species of Kerivoula, two species of Phoniscus (Kerivoulinae) and three species of Murina (Murininae) all emitted calls that are typical of species that glean insects from surfaces: broadband, frequency-modulated (FM) calls of low intensity and short duration. However, calls were highly distinctive in the use of very large bandwidths (range: 89–123 kHz) and extremely high frequencies (start frequency 152–180 kHz; end frequency 43–86 kHz). Furthermore, calls were produced in groups of 2–15 at very high pulse repetition rates (37–105 Hz). The functional significance of these characteristics with respect to foraging strategy is discussed. Large signal bandwidths facilitate highly accurate target localization in terms of both range and angle estimation and can thus be interpreted as an adaptation to foraging in the highly cluttered environment of the forest understorey. The use of high frequencies so far in excess of those seen in other FM gleaning bats of the same size is less easily explained, but may represent a mechanism by which these species distinguish prey items using echolocation alone, without recourse to visual or auditory cues. Species exhibited differences in echolocation parameters, particularly the end frequency and the number of calls per group of calls. The two subfamilies differed from each other in multivariate space derived from echolocation parameters; calls of the Murininae were of lower frequency than the Kerivoulinae and were typically produced in smaller groups or singly. Within the subfamilies there was considerable overlap between species of Murina, but the Kerivoula spp. were clearly distinct from one another but not from the two Phoniscus spp.
- Published
- 1999
43. The systematic position of Hypsugo macrotis (Chiroptera: Vespertilionidae) and a new record from Peninsular Malaysia
- Author
-
LIM, LEE-SIM, primary, CSORBA, GÁBOR, additional, WONG, CHENG-MIN, additional, ZUBAID, AKBAR, additional, RAHMAN, SULTANA PARVIN HABEEBUR, additional, KUMARAN, JAYARAJ VIJAYA, additional, KHAN, FAISAL ALI ANWARALI, additional, HUANG, JOE CHUN-CHIA, additional, NAJIMUDIN, NAZALAN, additional, and GÖRFÖL, TAMÁS, additional
- Published
- 2016
- Full Text
- View/download PDF
44. Porcupine burrow distribution in relation to soil types in Sarawak, Malaysia
- Author
-
Mohd. Top @ Mohd Tah, Marina, Mukhtar Ahmad, Zubaid Akbar, Mohd. Top @ Mohd Tah, Marina, and Mukhtar Ahmad, Zubaid Akbar
- Abstract
Although porcupines are reported to be relatively widespread in forests and cultivated areas in Malaysia, there is no published information on their roost site preferences. The objective of this study was to determine if porcupines (Hystrix brachyuraand Hystrix crassispinis) select particular soil types in which to construct burrows in Sarawak. Seven porcupine burrow locations in the Bintulu-Miri area of Sarawak with a total of 30 burrow holes were located. The burrow locations were marked using the Global Positioning System and overlaid with maps of the soil series in Sarawak to determine the relationship between the burrow location, soil type and soil series. The porcupines were found to inhabit areas where the soils were from the Merit/Bekenu soil series. Merit soil series show an increased clay content with moderate to well drained soil, while the Bekenu soil series is defined as well drained with good permeability. The results suggest that the porcupines prefer soils that are relatively easy to excavate but at the same time provide burrow stability. This suggests that the soil profile of the landscape can be used to predict the probability of the presence of porcupines in the area.
- Published
- 2015
45. The effect of supplementary food upon the activity patterns of wood mice, Apodemus sylvaticus , living on a system of maritime sand‐dunes
- Author
-
Zubaid Akbar and Martyn L. Gorman
- Subjects
education.field_of_study ,Evening ,biology ,Ecology ,fungi ,Population ,Woodland ,Nocturnal ,biology.organism_classification ,Sand dune stabilization ,Wood mouse ,Nest ,Apodemus ,Animal Science and Zoology ,education ,Ecology, Evolution, Behavior and Systematics - Abstract
The wood mouse is primarily a woodland species but it also occurs on maritime sand-dunes. The mice living on the sand-dunes leave their nests earlier in the evening and spend more time out of the nest than those animals living in woodlands. Here we test the hypothesis that this difference is because woodland provides substantially more food than do sand-dunes. Our experimental approach was to provide supplementary food in the form of wheatgrain to a sand-dune population and compare activity patterns with a control population. The mice on the supplemented area were strictly nocturnal and spent less time above ground than the controls. Their activity pattern was essentially the same as that of wood mice living in deciduous woodland.
- Published
- 1996
46. Social organization and genetic structure: insights from codistributed bat populations
- Author
-
Rossiter, Stephen J., Zubaid, Akbar, Mohd Adnan, Adura, Struebig, Matthew J., Kunz, Thomas H., Gopal, Sucharita, Petit, Eric, Kingston, Tigga, School of Biological and Chemical Sciences [London], Queen Mary University of London (QMUL), Science and Technology, Universiti Kebangsaan Malaysia, Universiti Kebangsaan Malaysia, Durrell Institute of Conservation and Ecology, University of Kent [Canterbury], Center for Ecology and Conservation Biology, Boston, Boston University [Boston] (BU), Center for Remote Sensing [Boston], Stratégies évolutives et Dynamique spatiale des Populations, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Texas Tech University [Lubbock] (TTU), Natural Environment Research Council (UK) Fellowship, National Science Foundation award (NSF # 0108384, DEB & East Asia and Pacific Program), Earthwatch Institute and National Geographic Society (Committee for Research & Exploration, Conservation Trust), Economic Planning Unit of the Malaysian Government, Malaysian Department of Wildlife and National Parks, Universiti Kebangsaan Malaysia (UKM), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Station Biologique de Paimpont CNRS UMR 6653 (OSUR), and Université de Rennes (UR)-Université de Rennes (UR)
- Subjects
genetic autocorrelation ,monogamy ,Rhinolophus ,Kerivoula ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,microsatellites ,polygyny ,roosting ecology - Abstract
International audience; The impact of ecology and social organization on genetic structure at landscape spatial scales, where gene dynamics shape evolution as well as determine susceptibility to habitat fragmentation, is poorly understood. Attempts to assess these effects must take into account the potentially confounding effects of history. We used microsatellites to compare genetic structure in seven bat species with contrasting patterns of roosting ecology and social organization, all of which are codistributed in an ancient forest habitat that has been exceptionally buffered from radical habitat shifts. Over one thousand individuals were captured at foraging sites and genotyped at polymorphic microsatellite loci. Analyses of spatially explicit genotype data revealed interspecies differences in the extent of movement and gene flow and genetic structure across continuous intact forest. Highest positive genetic structure was observed in tree-roosting taxa that roost either alone or in small groups. By comparison, a complete absence of genetic autocorrelation was noted in the cave-roosting colonial species across the study area. Our results thus reveal measurable interspecies differences in the natural limits of gene flow in an unmodified habitat, which we attribute to contrasting roosting ecology and social organization. The consequences of ecology and behaviour for gene flow have important implications for conservation. In particular, tree-roosting species characterized by lower vagility and thus gene flow will be disproportionally impacted by landscape-scale forest clearance and habitat fragmentation, which are prevalent in the study region. Our method also highlights the usefulness of rapid sampling of foraging bats for assaying genetic structure, particularly where roosting sites are not always known.
- Published
- 2012
47. Fruit diet of frugivorous bats (Cynopterus brachyotis and Cynopterus horsfieldii) in tropical hill forests of Peninsular Malaysia
- Author
-
Zubaid Akbar, Thomas H. Kunz, and Christine Fletcher
- Subjects
Cynopterus horsfieldii ,Frugivore ,biology ,Chemistry ,Cynopterus brachyotis ,Materials Chemistry ,Metals and Alloys ,Zoology ,Animal Science and Zoology ,General Chemistry ,Condensed Matter Physics ,biology.organism_classification ,Ecology, Evolution, Behavior and Systematics - Published
- 2012
48. Parallel declines in species and genetic diversity in tropical forest fragments
- Author
-
Struebig, Matthew J., Kingston, Tigga, Petit, Eric, Le Comber, Steven C., Zubaid, Akbar, Mohd Adnan, Adura, Rossiter, Stephen J., School of Biological and Chemical Sciences [London], Queen Mary University of London (QMUL), Durrell Institute of Conservation and Ecology, University of Kent [Canterbury], Texas Tech University [Lubbock] (TTU), Stratégies évolutives et Dynamique spatiale des Populations, Ecosystèmes, biodiversité, évolution [Rennes] (ECOBIO), Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes (UR)-Institut Ecologie et Environnement (INEE), Université de Rennes (UR)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centre National de la Recherche Scientifique (CNRS)-Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes (UR)-Université de Rennes (UR), Universiti Kebangsaan Malaysia (UKM), UK Natural Environment Research Council Bat conservation International/US Forest Service University of London Central Research Fund US NSF #0108384 Region Bretagne ..., Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Observatoire des Sciences de l'Univers de Rennes (OSUR)-Institut Ecologie et Environnement (INEE), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Station Biologique de Paimpont CNRS UMR 6653 (OSUR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Science and Technology, Universiti Kebangsaan Malaysia, and Universiti Kebangsaan Malaysia
- Subjects
species-genetic diversity correlation ,species-area relationship ,QH75 ,bat ,conservation value ,habitat fragmentation ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology ,Allelic richness ,oil palm ,SLOSS ,biodiversity - Abstract
International audience; The potential for parallel impacts of habitat change on multiple biodiversity levels has important conservation implications. We report on the first empirical test of the 'species-genetic diversity correlation' across co-distributed taxa with contrasting ecological traits in the context of habitat fragmentation. In a rainforest landscape undergoing conversion to oil palm, we show that depauperate species richness in fragments is mirrored by concomitant declines in population genetic diversity in the taxon predicted to be most susceptible to fragmentation. This association, not seen in the other species, relates to fragment area rather than isolation. While highlighting the over-simplification of extrapolating across taxa, we show that fragmentation presents a double jeopardy for some species. For these, conserving genetic diversity at levels of pristine forest could require sites 15-fold larger than those needed to safeguard species numbers. Importantly, however, each fragment contributes to regional species richness, with larger ones tending to contain more species.
- Published
- 2011
49. The effect of supplementary feeding upon the sizes of the home ranges of woodmice Apodemus sylvaticus living on a system of maritime sand‐dunes
- Author
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Zubaid Akbar and Martyn L. Gorman
- Subjects
education.field_of_study ,Ecology ,Range (biology) ,fungi ,Population ,Woodland ,Biology ,biology.organism_classification ,Supplementary food ,Sand dune stabilization ,stomatognathic system ,parasitic diseases ,Deciduous woodland ,Apodemus ,Animal Science and Zoology ,education ,Ecology, Evolution, Behavior and Systematics - Abstract
The woodmouse is primarily a woodland species but it also occurs on maritime sand-dunes. The home ranges of mice living on the sand-dunes are much larger than those of animals living in woodlands. Here we test the hypothesis that this difference is due to the fact that woodland provides substantially more food than do sand-dunes. Our experimental approach was to provide supplementary food in the form of wheatgrain to a sand-dune population and to compare range sizes with a control population. Range sizes on the supplemented area were significantly smaller than the controls and essentially similar to those of woodmice living in deciduous woodland.
- Published
- 1993
50. The effect of supplementary feeding upon the demography of a population of woodmice Apodemus sylvaticus , living on a system of maritime sand‐dunes
- Author
-
Martyn L. Gorman and Zubaid Akbar
- Subjects
education.field_of_study ,biology ,Rodent ,Ecology ,Population ,Woodland ,biology.organism_classification ,Population control ,Population density ,Sand dune stabilization ,biology.animal ,Apodemus ,Deciduous woodland ,Animal Science and Zoology ,education ,Ecology, Evolution, Behavior and Systematics - Abstract
The woodmouse is a characteristic rodent of deciduous woodland but it also lives on maritime sand-dunes. The population density of woodmice on sand-dunes is much lower than in woodland. Hue we test the hypothesis that this difference is due to the fact that woodland provides substantially more food than do sand-dunes. Our experimental approach was to provide supplementary food (wheat grain) to a sand-dune population for a period of 22 months and to compare demographic responses with a control population. The supplemented population increased rapidly and reached a size 6–7 times that ofthe control population. The overall annual pattern of changes in density were similar in both populations with minimum numbers in late spring, maximum numbers in autumn and a loss of individuals over the winter. The woodmice receiving supplementary food bred earlier and for longer than did the control mice.
- Published
- 1993
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