Importance of small fishes and invasive crayfish in otter Lutra lutra diet in an English chalk stream

Authors: Britton, J., Berry, M., Sewell, S., Lees, C. and Reading, P.

http://eprints.bournemouth.ac.uk/26742/

Journal: Knowledge and Management of Aquatic Ecosystems

Publisher: EDP Sciences

ISSN: 1961-9502

The diet composition of the European otter Lutra lutra was assessed using spraint analysis in the Hampshire Avon, a lowland chalk stream in Southern England, over an 18 month period. Small cyprinid fishes were the main prey item taken in all seasons, with bullhead Cottus gobio and stone loach Barbatula barbatula also important; there were relatively few larger fishes of interest to fisheries found. There were significant seasonal differences in diet composition by season, with signal crayfish Pacifastacus leniusculus only being prominent prey items in warmer months and amphibians in winter, revealing that non-fish resources were seasonally important dietary components. Reconstructed body lengths of prey revealed the only species present in diet >350 mm was pike Esox lucius. These dietary data thus provide important information for informing conservation conflicts between otters and fishery interests

This data was imported from Scopus:

Authors: Britton, J.R., Berry, M., Sewell, S., Lees, C. and Reading, P.

http://eprints.bournemouth.ac.uk/26742/

Journal: Knowledge and Management of Aquatic Ecosystems

Volume: 2017-January

Issue: 418

ISSN: 1961-9502

DOI: 10.1051/kmae/2017004

© J.R. Britton et al., Published by EDP Sciences 2017. The diet composition of the European otter Lutra lutra was assessed using spraint analysis in the Hampshire Avon, a lowland chalk stream in Southern England, over an 18-month period. Small cyprinid fishes were the main prey item taken in all seasons, with bullhead Cottus gobio and stone loach Barbatula barbatula also important; there were relatively few larger fishes of interest to fisheries found. There were significant seasonal differences in diet composition by season, with signal crayfish Pacifastacus leniusculus only being prominent prey items in warmer months and amphibians in winter, revealing that non-fish resources were seasonally important dietary components. Reconstructed body lengths of prey revealed the only species present in diet >350 mm was pike Esox lucius. These dietary data thus provide important information for informing conservation conflicts between otters and fishery interests.

This data was imported from Web of Science (Lite):

Authors: Britton, J.R., Berry, M., Sewell, S., Lees, C. and Reading, P.

http://eprints.bournemouth.ac.uk/26742/

Journal: KNOWLEDGE AND MANAGEMENT OF AQUATIC ECOSYSTEMS

Issue: 418

ISSN: 1961-9502

DOI: 10.1051/kmae/2017004

The data on this page was last updated at 05:16 on July 15, 2019.