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The deposition of otolith rings in Atlantic salmon, Salmo salar L., embryos
Author(s) -
Geffen A. J.
Publication year - 1983
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.1095-8649.1983.tb02927.x
Subject(s) - otolith , salmo , biology , embryo , incubation , photoperiodism , human fertilization , deposition (geology) , fish <actinopterygii> , fishery , zoology , anatomy , botany , paleontology , biochemistry , sediment
Salmon embryos, age 48–81 days post‐fertilization (dpf), were incubated under three different temperature and photoperiod regimes to test the effects of incubation conditions on otolith ring deposition. Otolith rings were first observed at 50 dpf and certain developmental events were marked by distinct, heavy rings. The rate of ring deposition increased with increasing temperature and exposure to light, ranging from 0·50 to 2·33 rings per day. The possible relation to physiological activity as measured by oxygen consumption is discussed.