Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland
Predation on adult salmon, Salmo salur L., by otters, Lurra lutra (L.), varied seasonally on the R. Dee, Aberdeenshire, Scotland, being highest during the spawning season in winter. Predation is described for some tributaries of the river. Male fish were caught by otters more often than females, and...
Published in: | Journal of Fish Biology |
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Language: | English |
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1990
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1990.tb03597.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1990.tb03597.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1990.tb03597.x |
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crwiley:10.1111/j.1095-8649.1990.tb03597.x 2024-06-02T08:03:40+00:00 Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland Carss, D. N. Kruuk, H. Conroy, J. W. H. 1990 http://dx.doi.org/10.1111/j.1095-8649.1990.tb03597.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1990.tb03597.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1990.tb03597.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 37, issue 6, page 935-944 ISSN 0022-1112 1095-8649 journal-article 1990 crwiley https://doi.org/10.1111/j.1095-8649.1990.tb03597.x 2024-05-03T11:45:24Z Predation on adult salmon, Salmo salur L., by otters, Lurra lutra (L.), varied seasonally on the R. Dee, Aberdeenshire, Scotland, being highest during the spawning season in winter. Predation is described for some tributaries of the river. Male fish were caught by otters more often than females, and it is suggested that they were most vulnerable during their extensive excursions up and down stream, particularly as they negotiated shallow riffles. Otters appeared to prey upon healthy fish rather than those infested with Saprolegnia sp. but there was no difference in the size, freshwater‐ or sea‐age offish killed by otterscompared with ‘kelts’ which had died non‐violently. At least some of the otters obtained most of their daily food requirements by catching a single salmon per night. Considerable numbers of adult salmon may be killed by otters during the spawning period but it is suggested that, because most are males, this is unlikely to affect the breeding success of the salmon population. Most predation occurs outside the fishing season and so is unlikely to reduce the numbers of salmon caught by anglers. Article in Journal/Newspaper Atlantic salmon Salmo salar Lutra lutra Wiley Online Library Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Journal of Fish Biology 37 6 935 944 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Predation on adult salmon, Salmo salur L., by otters, Lurra lutra (L.), varied seasonally on the R. Dee, Aberdeenshire, Scotland, being highest during the spawning season in winter. Predation is described for some tributaries of the river. Male fish were caught by otters more often than females, and it is suggested that they were most vulnerable during their extensive excursions up and down stream, particularly as they negotiated shallow riffles. Otters appeared to prey upon healthy fish rather than those infested with Saprolegnia sp. but there was no difference in the size, freshwater‐ or sea‐age offish killed by otterscompared with ‘kelts’ which had died non‐violently. At least some of the otters obtained most of their daily food requirements by catching a single salmon per night. Considerable numbers of adult salmon may be killed by otters during the spawning period but it is suggested that, because most are males, this is unlikely to affect the breeding success of the salmon population. Most predation occurs outside the fishing season and so is unlikely to reduce the numbers of salmon caught by anglers. |
format |
Article in Journal/Newspaper |
author |
Carss, D. N. Kruuk, H. Conroy, J. W. H. |
spellingShingle |
Carss, D. N. Kruuk, H. Conroy, J. W. H. Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
author_facet |
Carss, D. N. Kruuk, H. Conroy, J. W. H. |
author_sort |
Carss, D. N. |
title |
Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
title_short |
Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
title_full |
Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
title_fullStr |
Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
title_full_unstemmed |
Predation on adult Atlantic salmon, Salmo salar L., by otters, Lutra lutra (L.), within the River Dee system, Aberdeenshire, Scotland |
title_sort |
predation on adult atlantic salmon, salmo salar l., by otters, lutra lutra (l.), within the river dee system, aberdeenshire, scotland |
publisher |
Wiley |
publishDate |
1990 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1990.tb03597.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1990.tb03597.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1990.tb03597.x |
long_lat |
ENVELOPE(-59.767,-59.767,-62.433,-62.433) |
geographic |
Dee |
geographic_facet |
Dee |
genre |
Atlantic salmon Salmo salar Lutra lutra |
genre_facet |
Atlantic salmon Salmo salar Lutra lutra |
op_source |
Journal of Fish Biology volume 37, issue 6, page 935-944 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1990.tb03597.x |
container_title |
Journal of Fish Biology |
container_volume |
37 |
container_issue |
6 |
container_start_page |
935 |
op_container_end_page |
944 |
_version_ |
1800748263787200512 |