Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators
Stage V (C5) Calanus finmarchicus is a central prey item for animals feeding at several trophic levels in the Bay of Fundy, Canada, especially the highly endangered North Atlantic right whale Eubalaena glacialis. Here, we show that the energy and lipid content of C5 C. finmarchicus collected twice m...
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ftdoajarticles:oai:doaj.org/article:946aacd6755a470c9ee98bd6c5f5b569 2023-05-15T15:47:56+02:00 Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators CAE McKinstry AJ Westgate HN Koopman 2013-05-01T00:00:00Z https://doi.org/10.3354/esr00497 https://doaj.org/article/946aacd6755a470c9ee98bd6c5f5b569 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v20/n3/p195-204/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00497 https://doaj.org/article/946aacd6755a470c9ee98bd6c5f5b569 Endangered Species Research, Vol 20, Iss 3, Pp 195-204 (2013) Zoology QL1-991 Botany QK1-989 article 2013 ftdoajarticles https://doi.org/10.3354/esr00497 2022-12-30T20:20:41Z Stage V (C5) Calanus finmarchicus is a central prey item for animals feeding at several trophic levels in the Bay of Fundy, Canada, especially the highly endangered North Atlantic right whale Eubalaena glacialis. Here, we show that the energy and lipid content of C5 C. finmarchicus collected twice monthly (July to September) from the Grand Manan Basin exhibited significant variation over multiple years (2006 to 2010). Mean ± SD wet mass energy (6.77 ± 0.65 kJ g-1) was highest in 2007 and lowest in 2009 (5.82 ± 0.90 kJ g-1); lipid content followed the same pattern. Significant decreases in individual energy content were observed over the summer during 2006 and 2010. Lipid content was significantly correlated with energy content. Overall, energy content of copepods was 13% lower in 2009 than in 2006-2007, which could alter foraging patterns and activity budgets of predators such as the North Atlantic right whale and have implications for assessment of whale habitat based on models of energy requirements. Variation in C5 quality may be linked to annual changes in the lipid content of Bay of Fundy herring, which consume copepods and are in turn a main prey item of seabirds, fishes, and marine mammals. Our study emphasizes that variation in quality, not just quantity, of prey should be considered when formulating predator consumption models and in tracking trophic transfer. Article in Journal/Newspaper Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods Directory of Open Access Journals: DOAJ Articles Canada Manan ENVELOPE(8.748,8.748,62.793,62.793) Endangered Species Research 20 3 195 204 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 CAE McKinstry AJ Westgate HN Koopman Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Stage V (C5) Calanus finmarchicus is a central prey item for animals feeding at several trophic levels in the Bay of Fundy, Canada, especially the highly endangered North Atlantic right whale Eubalaena glacialis. Here, we show that the energy and lipid content of C5 C. finmarchicus collected twice monthly (July to September) from the Grand Manan Basin exhibited significant variation over multiple years (2006 to 2010). Mean ± SD wet mass energy (6.77 ± 0.65 kJ g-1) was highest in 2007 and lowest in 2009 (5.82 ± 0.90 kJ g-1); lipid content followed the same pattern. Significant decreases in individual energy content were observed over the summer during 2006 and 2010. Lipid content was significantly correlated with energy content. Overall, energy content of copepods was 13% lower in 2009 than in 2006-2007, which could alter foraging patterns and activity budgets of predators such as the North Atlantic right whale and have implications for assessment of whale habitat based on models of energy requirements. Variation in C5 quality may be linked to annual changes in the lipid content of Bay of Fundy herring, which consume copepods and are in turn a main prey item of seabirds, fishes, and marine mammals. Our study emphasizes that variation in quality, not just quantity, of prey should be considered when formulating predator consumption models and in tracking trophic transfer. |
format |
Article in Journal/Newspaper |
author |
CAE McKinstry AJ Westgate HN Koopman |
author_facet |
CAE McKinstry AJ Westgate HN Koopman |
author_sort |
CAE McKinstry |
title |
Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
title_short |
Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
title_full |
Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
title_fullStr |
Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
title_full_unstemmed |
Annual variation in the nutritional value of Stage V Calanus finmarchicus: implications for right whales and other copepod predators |
title_sort |
annual variation in the nutritional value of stage v calanus finmarchicus: implications for right whales and other copepod predators |
publisher |
Inter-Research |
publishDate |
2013 |
url |
https://doi.org/10.3354/esr00497 https://doaj.org/article/946aacd6755a470c9ee98bd6c5f5b569 |
long_lat |
ENVELOPE(8.748,8.748,62.793,62.793) |
geographic |
Canada Manan |
geographic_facet |
Canada Manan |
genre |
Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
genre_facet |
Calanus finmarchicus Eubalaena glacialis North Atlantic North Atlantic right whale Copepods |
op_source |
Endangered Species Research, Vol 20, Iss 3, Pp 195-204 (2013) |
op_relation |
https://www.int-res.com/abstracts/esr/v20/n3/p195-204/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00497 https://doaj.org/article/946aacd6755a470c9ee98bd6c5f5b569 |
op_doi |
https://doi.org/10.3354/esr00497 |
container_title |
Endangered Species Research |
container_volume |
20 |
container_issue |
3 |
container_start_page |
195 |
op_container_end_page |
204 |
_version_ |
1766382914723905536 |