Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers
The field metabolic rates (FMRs) of nine captive goosanders, Mergus merganser , released on two Scottish rivers were estimated using the doubly‐labelled water (DLW) technique. Mean (± S.E.) FMR was 2.322±0.239ml CO 2 g −1 h −1 and daily energy expenditure (DEE) 1939 ± 184 kJ per day. This was signif...
Published in: | Journal of Fish Biology |
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Language: | English |
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1995
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Online Access: | http://dx.doi.org/10.1111/j.1095-8649.1995.tb05968.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1995.tb05968.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1995.tb05968.x |
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crwiley:10.1111/j.1095-8649.1995.tb05968.x 2024-09-09T19:30:42+00:00 Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers Feltham, M. J. 1995 http://dx.doi.org/10.1111/j.1095-8649.1995.tb05968.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1995.tb05968.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1995.tb05968.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 46, issue 2, page 273-281 ISSN 0022-1112 1095-8649 journal-article 1995 crwiley https://doi.org/10.1111/j.1095-8649.1995.tb05968.x 2024-08-06T04:18:48Z The field metabolic rates (FMRs) of nine captive goosanders, Mergus merganser , released on two Scottish rivers were estimated using the doubly‐labelled water (DLW) technique. Mean (± S.E.) FMR was 2.322±0.239ml CO 2 g −1 h −1 and daily energy expenditure (DEE) 1939 ± 184 kJ per day. This was significantly greater (x 1.5) than previous estimates which assumed DEE to be three times the basal metabolic rate (BMR) based on regression equations predicting BMR from body mass. FMR of captives and dietary data from previous studies were used to estimate daily consumption of salmon, Salmo salar , smolts and parr by natural populations of these ducks on the river North Esk, north‐east Scotland. Goosanders are likely to consume 480‐522 g fish per day of which two‐thirds are juvenile salmon; equivalent to a daily intake of 10‐11 smolts and 48‐52 parr. Annual predation of smolts by goosanders was estimated to be between 8000 and 15 000 or 3 and 16% of annual production. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Dee ENVELOPE(-59.767,-59.767,-62.433,-62.433) Journal of Fish Biology 46 2 273 281 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
The field metabolic rates (FMRs) of nine captive goosanders, Mergus merganser , released on two Scottish rivers were estimated using the doubly‐labelled water (DLW) technique. Mean (± S.E.) FMR was 2.322±0.239ml CO 2 g −1 h −1 and daily energy expenditure (DEE) 1939 ± 184 kJ per day. This was significantly greater (x 1.5) than previous estimates which assumed DEE to be three times the basal metabolic rate (BMR) based on regression equations predicting BMR from body mass. FMR of captives and dietary data from previous studies were used to estimate daily consumption of salmon, Salmo salar , smolts and parr by natural populations of these ducks on the river North Esk, north‐east Scotland. Goosanders are likely to consume 480‐522 g fish per day of which two‐thirds are juvenile salmon; equivalent to a daily intake of 10‐11 smolts and 48‐52 parr. Annual predation of smolts by goosanders was estimated to be between 8000 and 15 000 or 3 and 16% of annual production. |
format |
Article in Journal/Newspaper |
author |
Feltham, M. J. |
spellingShingle |
Feltham, M. J. Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
author_facet |
Feltham, M. J. |
author_sort |
Feltham, M. J. |
title |
Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
title_short |
Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
title_full |
Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
title_fullStr |
Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
title_full_unstemmed |
Consumption of Atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two Scottish rivers |
title_sort |
consumption of atlantic salmon smolts and parr by goosanders: estimates from doubly‐labelled water measurements of captive birds released on two scottish rivers |
publisher |
Wiley |
publishDate |
1995 |
url |
http://dx.doi.org/10.1111/j.1095-8649.1995.tb05968.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.1995.tb05968.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.1995.tb05968.x |
long_lat |
ENVELOPE(-59.767,-59.767,-62.433,-62.433) |
geographic |
Dee |
geographic_facet |
Dee |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Biology volume 46, issue 2, page 273-281 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.1995.tb05968.x |
container_title |
Journal of Fish Biology |
container_volume |
46 |
container_issue |
2 |
container_start_page |
273 |
op_container_end_page |
281 |
_version_ |
1809899691381358592 |