Periodicity of otolith check formation in the juvenile plaice Pleuronectes platessa
Chapter, Peer reviewed
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http://hdl.handle.net/1956/4315Utgivelsesdato
1995Metadata
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Originalversjon
In: D.H. Secor, J.M. Dean,and S.E. Campana, eds. Recent Developments in Fish Otolith Research. Belle W. Baruch library in Marine Science, no 19. University of South Carolina Press, ColumbiaSammendrag
Juvenile (Pleuronectes platessa L.) were sampled in the intertidal zone of Port Erin Bay (Isle of Man, Irish Sea) by push-net in the summers of 1990 and 1992. Check formation on the sagittal otoliths was examined to test the hypothesis that tidal and light cycles periodically disrupt the growth of 0-group plaice. Otolith checks occurred mostly at weekly (7-8 d) intervals (range 3-21 d). This periodicity matched activity patterns that were lowest at both spring and neap tides. Check formation may reflect ontogenetic changes in feeding and activity, as measured by diurnal and seasonal variations in catches.