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27 results on '"SINGLETON, Grant R."'

6. The need to implement the landscape of fear within rodent pest management strategies

Author

Krijger, Inge M, Belmain, Steven R, Singleton, Grant R, Groot Koerkamp, Peter WG, and Meerburg, Bastiaan G

Subjects
S1, Behavior, Animal, Ecology, Emissie & Mestverwaarding, Farm Technology, Rodentia, GUD, PE&RC, landscape of fear, ecologically based rodent management, predation risk, Perspective, Animals, Rodent Control, rodent control, Agrarische Bedrijfstechnologie, IPM, Emissions & Manure Valorisation, rodent ecology
Abstract

Current reactive pest management methods have serious drawbacks such as the heavy reliance on chemicals, emerging genetic rodenticide resistance and high secondary exposure risks. Rodent control needs to be based on pest species ecology and ethology to facilitate the development of ecologically based rodent management (EBRM). An important aspect of EBRM is a strong understanding of rodent pest species ecology, behaviour and spatiotemporal factors. Gaining insight into the behaviour of pest species is a key aspect of EBRM. The landscape of fear (LOF) is a mapping of the spatial variation in the foraging cost arising from the risk of predation, and reflects the levels of fear a prey species perceives at different locations within its home range. In practice, the LOF maps habitat use as a result of perceived fear, which shows where bait or traps are most likely to be encountered and used by rodents. Several studies have linked perceived predation risk of foraging animals with quitting‐harvest rates or giving‐up densities (GUDs). GUDs have been used to reflect foraging behaviour strategies of predator avoidance, but to our knowledge very few papers have directly used GUDs in relation to pest management strategies. An opportunity for rodent control strategies lies in the integration of the LOF of rodents in EBRM methodologies. Rodent management could be more efficient and effective by concentrating on those areas where rodents perceive the least levels of predation risk. © 2017 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Published
2017

7. Can a native rodent species limit the invasive potential of a non-native rodent species in tropical agroforest habitats?

Author

Stuart, Alexander M., Prescott, Colin V., and Singleton, Grant R.

Abstract

BACKGROUND\ud \ud Little is known about native and non-native rodent species interactions in complex tropical agro-ecosystems. We hypothesised that the native non-pest rodent Rattus everetti may be competitively dominant over the invasive pest rodent Rattus tanezumi within agroforests. We tested this experimentally by using pulse removal for three consecutive months to reduce populations of R. everetti in agroforest habitat and assessed over 6-months the response of R. tanezumi and other rodent species.\ud \ud RESULTS\ud \ud Following removal, R. everetti individuals rapidly immigrated into removal sites. At the end of the study period, R. tanezumi were larger and there was a significant shift in their microhabitat use with respect to the use of ground vegetation cover following the perturbation of R. everetti. Irrespective of treatment, R. tanezumi selected microhabitat with less tree canopy cover, indicative of severely disturbed habitat, whereas, R. everetti selected microhabitat with a dense canopy.\ud \ud CONCLUSION\ud \ud Our results suggest that sustained habitat disturbance in agroforests favours R. tanezumi, whilst the regeneration of agroforests towards a more natural state would favour native species and may reduce pest pressure in adjacent crops. In addition, the rapid recolonisation of R. everetti suggests this species would be able to recover from non-target impacts of short-term rodent pest control.

Published
2016

23. Mice, rats, and people: the bio-economics of agricultural rodent pests

Author

Stenseth, Nils Chr, primary, Leirs, Herwig, additional, Skonhoft, Anders, additional, Davis, Stephen A., additional, Pech, Roger P., additional, Andreassen, Harry P., additional, Singleton, Grant R., additional, Lima, Mauricio, additional, Machang’u, Robert S., additional, Makundi, Rhodes H., additional, Zhang, Zhibin, additional, Brown, Peter R., additional, Shi, Dazhao, additional, and Wan, Xinrong, additional

Published
2003
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