Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae
Predation has been suggested as a cause of substantial mortality of fish larvae to the degree that it might influence recruitment. This field-based study concludes that juvenile herring ( Clupea harengus ) as small pelagic predator can significantly affect mortality rates of the planktonic larvae of...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
2009
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Online Access: | http://dx.doi.org/10.1139/f09-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-105 |
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crcansciencepubl:10.1139/f09-105 2024-09-15T17:57:58+00:00 Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae Hallfredsson, Elvar H. Pedersen, Torstein 2009 http://dx.doi.org/10.1139/f09-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-105 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 66, issue 10, page 1693-1706 ISSN 0706-652X 1205-7533 journal-article 2009 crcansciencepubl https://doi.org/10.1139/f09-105 2024-09-05T04:11:14Z Predation has been suggested as a cause of substantial mortality of fish larvae to the degree that it might influence recruitment. This field-based study concludes that juvenile herring ( Clupea harengus ) as small pelagic predator can significantly affect mortality rates of the planktonic larvae of capelin ( Mallotus villosus ) in the Barents Sea. Surveys were carried out in the summers of 2001 and 2003. In 2001, juvenile herring were widely distributed and overlapped with capelin larvae over a wide area, whereas in 2003, the herring were more aggregated. The study focused on predation in the areas of predator–prey overlap. Capelin larvae were observed in the herring stomachs at 11 of 24 stations and at 8 of 16 stations where herring were caught in 2001 and 2003, respectively. At those stations, an estimated 7.3% and 9.9% of the capelin larvae were eaten by herring per day in 2001 and 2003, respectively. Statistical models revealed that density of capelin larvae and copepods and occurrence of euphausiids in the stomachs affected the number of capelin larvae per predator stomach. A simplified model with only capelin larvae density as predictor was converted to a functional response relationship using an experimentally derived digestion rate estimate for capelin larvae in herring stomachs. Article in Journal/Newspaper Barents Sea Copepods Canadian Science Publishing Canadian Journal of Fisheries and Aquatic Sciences 66 10 1693 1706 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
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English |
description |
Predation has been suggested as a cause of substantial mortality of fish larvae to the degree that it might influence recruitment. This field-based study concludes that juvenile herring ( Clupea harengus ) as small pelagic predator can significantly affect mortality rates of the planktonic larvae of capelin ( Mallotus villosus ) in the Barents Sea. Surveys were carried out in the summers of 2001 and 2003. In 2001, juvenile herring were widely distributed and overlapped with capelin larvae over a wide area, whereas in 2003, the herring were more aggregated. The study focused on predation in the areas of predator–prey overlap. Capelin larvae were observed in the herring stomachs at 11 of 24 stations and at 8 of 16 stations where herring were caught in 2001 and 2003, respectively. At those stations, an estimated 7.3% and 9.9% of the capelin larvae were eaten by herring per day in 2001 and 2003, respectively. Statistical models revealed that density of capelin larvae and copepods and occurrence of euphausiids in the stomachs affected the number of capelin larvae per predator stomach. A simplified model with only capelin larvae density as predictor was converted to a functional response relationship using an experimentally derived digestion rate estimate for capelin larvae in herring stomachs. |
format |
Article in Journal/Newspaper |
author |
Hallfredsson, Elvar H. Pedersen, Torstein |
spellingShingle |
Hallfredsson, Elvar H. Pedersen, Torstein Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
author_facet |
Hallfredsson, Elvar H. Pedersen, Torstein |
author_sort |
Hallfredsson, Elvar H. |
title |
Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
title_short |
Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
title_full |
Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
title_fullStr |
Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
title_full_unstemmed |
Effects of predation from juvenile herring ( Clupea harengus) on mortality rates of capelin ( Mallotus villosus) larvae |
title_sort |
effects of predation from juvenile herring ( clupea harengus) on mortality rates of capelin ( mallotus villosus) larvae |
publisher |
Canadian Science Publishing |
publishDate |
2009 |
url |
http://dx.doi.org/10.1139/f09-105 http://www.nrcresearchpress.com/doi/full-xml/10.1139/F09-105 http://www.nrcresearchpress.com/doi/pdf/10.1139/F09-105 |
genre |
Barents Sea Copepods |
genre_facet |
Barents Sea Copepods |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 66, issue 10, page 1693-1706 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f09-105 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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66 |
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10 |
container_start_page |
1693 |
op_container_end_page |
1706 |
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1810434177336606720 |