Do capelin larvae deposit daily increments in their otoliths? ...
No abstracts are to be cited without prior reference to the author.Analysis of increment formation in larval fish otoliths has provided valuable information about growth, transport and mortality processes of larvae in wild stocks, but the technique has not been widely used on capelin larvae. As part...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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ASC 2004 - DD - Theme session
2024
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| Online Access: | https://dx.doi.org/10.17895/ices.pub.25349224 https://ices-library.figshare.com/articles/conference_contribution/Do_capelin_larvae_deposit_daily_increments_in_their_otoliths_/25349224 |
| Summary: | No abstracts are to be cited without prior reference to the author.Analysis of increment formation in larval fish otoliths has provided valuable information about growth, transport and mortality processes of larvae in wild stocks, but the technique has not been widely used on capelin larvae. As part of a programme (BASECOEX) aimed to investigate recruitment dynamics of capelin in the Barents Sea, otolith microstructure analysis was used on larvae of known age reared in plastic bags. In enclosure validation experiments in 2002 and 2003, newly hatched yolk sac larvae were stocked into eight 10m3 plastic bags where environmental conditions were kept as natural as possible. The bags were emptied after about 35-79 days, the surviving larvae were collected and the otoliths were analysed in order to test whether there was daily increment formation. Survival in the bags was very high, ranging from 40-76%, and individual growth rates varied with an average of 0.23 mm per day. Fast-growing larvae formed more ... |
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