Search

A specimen of bull ray Aetomylaeus bovinus was captured dead by a diver around a tuna sea cage farm. It was female, measured 2310 mm in total length (TL) and 1460 mm in disc width (DW) with body weight estimated as about 20 kg. This case was reported from a tuna farm for the first time. The bull ray entered the sea cage about three months ago, but no attack occurred to the tuna in the cage. It was grazing on fouling organisms that attached to the nets. However, the cage nets were replaced with clean ones four days ago before the capture, and the bull ray did not find enough fouling organisms or uneaten fish feed and was starved to death. [ABSTRACT FROM AUTHOR]

Copyright of Ege Journal of Fisheries & Aquatic Sciences (EgeJFAS) / Su Ürünleri Dergisi is the property of Ege Journal of Fisheries & Aquatic Sciences (EgeJFAS) / Su Urunleri Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ege Journal of Fisheries & Aquatic Sciences (EgeJFAS) / Su Ürünleri Dergisi is the property of Ege Journal of Fisheries & Aquatic Sciences (EgeJFAS) / Su Urunleri Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A specimen of imperial blackfish Schedophilus ovalis was caught on 15 April 2018 from the Gülbahce coasts, Izmir Bay at a depth of 8 m. This ichthyologic note presents the first confirmed record of imperial blackfish from the shallow waters of Izmir Bay, NE Aegean Sea and the third for the Turkish waters. [ABSTRACT FROM AUTHOR]

A specimen of lessepsian Stephanolepis diaspros, 177 mm in total length, was caught on 27 October 2014 by a commercial trammel net off Urla coast in Izmir Bay on sandy bottom at a depth of 6 m. This record is not only the first one but also the fifth lessepsian fish species found in Izmir Bay in the northern Aegean Sea. [ABSTRACT FROM AUTHOR]

A specimen of the Tub gurnard, Chelidonichthys lucerna, with 735 mm TL, was caught on 2 January 2013 by an angler on a boat in Sığacık Bay, Southern Aegean Sea. The given size is the second maximum length record of C. lucerna, however, it is a first confirmed record for the Turkish seas. [ABSTRACT FROM AUTHOR]

Background. Fishing operations for albacore, Thunnus alalunga (Bonnaterre, 1788), are mainly carried out by pelagic longline in the Mediterranean, whereas driftnets are the main fishing gear for albacore catch in Turkey. The albacore driftnet fishery has been carried out since 2004 and about 40 vessels participated in this venture between May and July especially in the Gulf of Antalya. The aim of this study was to determine the Catch Per Unit of Effort (CPUE) and bycatch from the Turkish albacore fleet during the 2010-2011 fishing seasons. Materials and methods. This study was carried out with 18 representative drift-netters based at the port of Alanya, Kaş, Fethiye, and Siğacik from May to July 2010 and from May to July 2011. On each fishing trip, data were collected on date, location, depth, fishing boat characteristics, fishing gear aspects, and the capture of both target and non-target species by weight (biomass) and number. Results. A total of 125 data sets were collected. The mean CPUEs for albacore by number and weight were 13 ± 1.6 specimens and 90 ± 11 kg per km of net, respectively. A total of 12 species, belonging to 9 families were caught during the sampling period. The target species--albacore--had the highest ratio both in number (76.6%) and weight (62.8%) followed by, Euthynnus alletteratus, Xiphias gladius, Thunnus thynnus, and Auxis rochei. Ratios of biomass and number ratios of the non-target species to the target albacore were 1 : 0.59 kg and 1 : 0.31 individuals, respectively. Conclusion. Traditional Turkish pelagic driftnet fishery, dating back to the early 1900s, was halted in July 2011 by the Turkish fisheries authority to comply with the international ban. The Turkish fisheries authority strongly supports the transition towards the usage of pelagic longlines as recommended by ICCAT and should supply technical support to the fishermen. [ABSTRACT FROM AUTHOR]

Length-weight relationships (LWRs) are presented for 17 fish species caught from Gökova Bay (southeastern Aegean Sea) during he 2006 fishing season. Fish samples were collected from small-scale trammel nets and longline fisheries. The values of b ranged from 2.086 (±0.152) for Sphyraena sphyraena to 3.499 (±0.058) for Scomber japonicus. The median value of b was 3.055 (±0.081). The r² values ranged from 0.712 for Sphyraena chrysotaenia to 0.996 for Scomber japonicus and all relationships were highly significant (P < 0.001). Estimated LWR parameters of 4 species, Dicentrarchus labrax, Seriola dumerili, Siganus luridus and Sphyraena sphyraena, for Turkish waters are presented for the first time. [ABSTRACT FROM AUTHOR]

Gökova Bay, which is located in Mugla in Turkish Aegean Sea, has total area of 52000 hectares, including 24500 hectares territorial waters. This area is one of the eight protected marine areas in Turkey which has been protecting since 1989. This study reports an investigation carried out on set net fishery in two main fishing ports, Akyaka and Akçapınar in Gökova Bay (Aegean Sea) between September 2002 and August 2003. The fish and invertebrate species caught from set net fishery were typical of those that inhabit coastal embayments in the Mediterranean. Liza saliens, Scomberomorus commerson, Pagellus erythrinus, Mullus surmuletus and Octopus vulgaris species dominated in the commercial catch. A total of 33 finfish, 6 invertebrate species were identified from commercial catches in set netting. Fishing effort and CPUE (catch per unit effort) in biomass of fish were recorded in rather low values in Gökova Bay. [ABSTRACT FROM AUTHOR]

Ceyhan, T., Akyol, O., Ayaz, A., and Juanes, F. 2007. Age, growth, and reproductive season of bluefish (Pomatomus saltatrix) in the Marmara region, Turkey. – ICES Journal of Marine Science, 64: 531–536.Bluefish (Pomatomus saltatrix) are distributed widely along the Turkish coasts, and are regularly captured, especially in the Sea of Marmara during their spawning migration to the Black Sea from the Mediterranean in spring and during their return migration south in early autumn. Age, growth, and reproductive season are reported. The ages of 1114 bluefish were determined from otoliths. The age groups ranged from 0 to III, and mean fork lengths (and weights) were 14.4 ± 0.12 cm (38.2 ± 1.02 g), 19.5 ± 0.06 cm (93.7 ± 0.86 g), 27.5 ± 0.48 cm (238.5 ± 11.3 g), and 33.3 ± 0.50 cm (431.9 ± 17.08 g) for each age group, respectively. The von Bertalanffy growth parameters were L∞ = 51 cm, K = 0.228, and t0 = −1.26 y. The reproductive period, evaluated from gonadosomatic indices, began in early spring and extended until August. [ABSTRACT FROM PUBLISHER]