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Age and growth of the alfonsino Beryx splendens over the seamounts off New Caledonia
- Source :
- Marine Biology. 125:249-258
- Publication Year :
- 1996
- Publisher :
- Springer Science and Business Media LLC, 1996.
-
Abstract
- Age and growth of the alfonsino Beryx splendens from New Caledonia seamounts were determined by examination of whole and sectioned otoliths. One growth-ring (annulus) in the otoliths appears to be laid down each year. It consists of one opaque (summer, fast-growing) zone and one hyaline (winter, slowgrowing) zone. Thin-sections of otoliths revealed daily rings which allowed us to estimate that the formation of the nucleus takes ∼10 mo. The first annulus following the nucleus is incomplete. Females have a higher growth rate than males. Sexual maturity is reached at the age of 7 to 8 yr for males and 6 yr for females. Maximum age attained would be ∼20 yr for alfonsino >50 cm in fork length. the results are compared with those from the few other studies on the growth of alfonsino.
- Subjects :
- Annulus (mycology)
geography
geography.geographical_feature_category
Ecology
biology
Seamount
Zoology
Aquatic Science
biology.organism_classification
Fish measurement
Beryx
medicine.anatomical_structure
Coastal zone
medicine
Sexual maturity
Alfonsino
Ecology, Evolution, Behavior and Systematics
Otolith
Subjects
Details
- ISSN :
- 14321793 and 00253162
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Marine Biology
- Accession number :
- edsair.doi...........ef57cd96862df80031e06140d4b2bf63