Observations on the occurrence, size, and feeding of pelagic larvae of the common wolffish (Anarhichas lupus) in western Finnmark, northern Norway
Common wolffish larvae were caught during ichthyoplankton surveys in western Finnmark, northern Norway, in March, May, and July 1987. The surveys, by horizontal hauls with various trawling gear, covered depths from 5 to 150 m, and yielded a total of nearly 6000 larvae and juveniles, ranging in size...
| Published in: | ICES Journal of Marine Science |
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| Main Authors: | , , |
| Format: | Text |
| Language: | English |
| Published: |
Oxford University Press
1990
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| Subjects: | |
| Online Access: | http://icesjms.oxfordjournals.org/cgi/content/short/46/2/148 https://doi.org/10.1093/icesjms/46.2.148 |
| Summary: | Common wolffish larvae were caught during ichthyoplankton surveys in western Finnmark, northern Norway, in March, May, and July 1987. The surveys, by horizontal hauls with various trawling gear, covered depths from 5 to 150 m, and yielded a total of nearly 6000 larvae and juveniles, ranging in size from 20 mm (first-feeding stage) to 40 mm in total length. The spawning and hatching periods of the common wolffish were estimated to be in September 1986 and the first half of April 1987, respectively. A specific growth rate of 3.5%/day was calculated for the larvae in the period from May to August 1987. The stomach contents of 250 common wolffish larvae were examined. The contents consisted of various crustaceans (1–3 mm) and fish larvae (6–10 mm). Amphipods (57.3 %) and decapod larvae (15.4 %) were dominant. |
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