Journal
FISHERIES RESEARCH
Volume 45, Issue 1, Pages 43-50Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0165-7836(99)00094-6
Keywords
age; growth; Symphodus roissali; Symphodus tinca; Labrus merula; Coris julis
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Age and growth patterns of four common species of wrasses, Labrus merula, Coris julis, Symphodus roissali and Symphodus tinca, from the north-western Mediterranean sea are analysed. Length-at-age values are estimated from otoliths from which the first annual hyaline ring is determined by reading daily rings. The growth patterns are well described by the von Bertalanffy growth equation with the exception of S. tinca which showed an extremely high dispersion in the length-at-age distribution. The daily rings show the second hyaline ring as the first annual hyaline ring, whereas the first hyaline ring was formed after 2 months of life coinciding with the settlement period of these species, which indicates that changes in otolith crystal growth during the first year of life could be driven by biological or physiological changes in the individuals. (C) 2000 Elsevier Science B.V. All rights reserved.
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