The gut contents of young capelin larvae sampled during a 24 hour period around a floating drogue were examined to study their feeding. The food consisted mainly of Calanus eggs (52%) and Calanus nauplii (42%). Compared to their abundance in plankton, Calanus eggs were by far preferred. The young larvae started to feed while still having large yolk-sacs, and the percentage of larvae feeding increased with decreasing yolk-sac size. No change in diet with age could be seen. Feeding started shortly after sunrise and declined at nightfall. A low percentage of larvae with gut content might indicate that the densities of food particles in plankton were too low to maintain survival and growth.
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AGRIS - 国际农业科技情报系统
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出版者
ICES
其它主题
Fiskelarver; Fôring; Vdp::agriculture and fishery disciplines: 900::fisheries science: 920::resource biology: 921
语言
英语
格式
application/pdf
类型
Working Paper
来源
12 s.
2024-11-28
2026-02-03
Dublin Core