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Otolith formation, microstructure and daily increment validation in juvenile perch Perca fluviatilis
Author(s) -
Kristensen P. B.,
Closs G. P.,
Lokman P. M.,
Grønkjær P.
Publication year - 2008
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.2008.02019.x
Subject(s) - otolith , perch , hatching , biology , juvenile , allometry , larva , fishery , juvenile fish , yolk , percidae , zoology , ontogeny , fish <actinopterygii> , ecology , endocrinology
The otoliths of laboratory‐reared larval and juvenile perch Perca fluviatilis of known age were analysed to determine the age of otolith formation and validate the formation of daily increments. There was a linear relationship between number of increments and age in days post‐hatching, although by 82 days post‐hatching daily increment counts underestimated actual age by an average of 5 days. Otolith dimensions in relation to standard length indicated allometric growth of otoliths until completion of yolk absorption, and isometric growth thereafter, up to 82 days post‐hatching.