Growth Histories of Larval Redfish ( Sebastes spp.) on an Offshore Atlantic Fishing Bank Determined by Otolith Increment Analysis
Larval redfish, Sebastes spp., were collected for growth analysis on Flemish Cap, an offshore bank approximately 400–500 km east of insular Newfoundland, Canada. There is evidence that larval redfish form one sagittal growth increment daily, starting the day of extrusion from the mother. Length incr...
| Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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| Main Authors: | , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Canadian Science Publishing
1985
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1139/f85-183 http://www.nrcresearchpress.com/doi/pdf/10.1139/f85-183 |
| Summary: | Larval redfish, Sebastes spp., were collected for growth analysis on Flemish Cap, an offshore bank approximately 400–500 km east of insular Newfoundland, Canada. There is evidence that larval redfish form one sagittal growth increment daily, starting the day of extrusion from the mother. Length increases linearly with both age and sagittal radius. The mean daily growth rate was 0.16 mm/d in 1980 and 0.11 mm/d in 1981. Length at extrusion varied with date of extrusion in both years. Individual growth histories, inferred from measurements of sagittal radii, varied considerably with age and extrusion date. Larvae typically grew slowly for 10–15 d after extrusion and then rapidly for 60–70 d before slowing as they entered the pelagic juvenile stage. |
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