The effect of abiotic and biotic factors on the importance of macroplankton in the diet of Northeast Arctic cod in recent years
Abstract Using cod feeding data, this paper considers the distribution and abundance of macroplankton from different ecological groups (euphausiids and hyperiids) and the variability in their consumption by cod over a period of years during which different water mass temperatures were observed. Thes...
| Published in: | ICES Journal of Marine Science |
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| Main Authors: | , , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Oxford University Press (OUP)
2005
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1016/j.icesjms.2005.08.003 http://academic.oup.com/icesjms/article-pdf/62/7/1463/29125670/62-7-1463.pdf |
| Summary: | Abstract Using cod feeding data, this paper considers the distribution and abundance of macroplankton from different ecological groups (euphausiids and hyperiids) and the variability in their consumption by cod over a period of years during which different water mass temperatures were observed. These years were also characterized by variable abundance of capelin, cod's main food source. Differences in intensity and duration of cod consumption of euphausiids and hyperiids species are shown, depending on their abundance, temperature conditions, cod distribution, and the supply of capelin for cod. This paper discusses the energetics of consuming different types of prey and the role euphausiids play in the energy balance of cod. The low fat content of cod is sometimes associated with feeding on postspawning euphausiids in summer and autumn. |
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