Variability in reproductive traits in the sex-changing fish, Coris julis, in the Mediterranean


Опубликован: Sep 15, 2013
A. ALONSO-FERNANDEZ
J. ALOS
M. PALMER
Аннотация

The quantity and quality of propagules, i.e., reproductive output, play a key role in the dynamics of exploited populations, with particular implications for sex-changing fish. Here, we studied for the first time the effects of maternal traits on the reproductive output of the Mediterranean rainbow wrasse Coris julis, a sequential hermaphroditic fish widely distributed in temperate marine coastal regions. The quantity of the reproductive output (batch fecundity) was significantly related to maternal size, which is of special interest in a species submitted to size-selective harvesting (recreational angling). However, egg quality (egg size) was not significantly related to any maternal factor and the spawning fraction was related to a seasonal pattern only. These results should contribute to improving estimations of the annual reproductive output and the stock assessment of this species and some implications for management are discussed.

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Биография автора
A. ALONSO-FERNANDEZ, Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, IIM-CSIC. C/ Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain

Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Científicas, IIM-CSIC. C/ Eduardo Cabello 6, 36208, Vigo, Pontevedra, Spain


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