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Somatic and otolith growth in the oyster toadfish (Opsanus tau L.) |
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| Authors: | Richard L. Radtke Michael L. Fine Janice Bell |
| Affiliation: | a Belle W. Baruch Institute for Marine Biology and Coastal Research, University of South Carolina, Columbia, SC 29208, U.S.A. b Hawaii Institute of Marine Biology, University of Hawaii, P.O. Box 1340, Kaneohe, HA 96744, U.S.A. c Department of Biology, Virginia Commonwealth University, Richmond, VA 23284, U.S.A. Pacific Biomedical Research Center, Kewalo Marine Laboratory, University of Hawaii, 41 Ahui Street, Honolulu, HA 96813, U.S.A. |
| Abstract: | Otoliths from oyster toadfish were measured and examined for annuli and daily increments. Distinct annual increments made it feasible to determine growth parameters which demonstrated sexual dimorphism in growth. Microincrements, judged to be daily on the basis of two separate criteria, were enumerated and measured to provide verification of annuli. Utilization of multivariate mathematical models relating age to otolith growth and somatic growth simplified age determination. These methods for examining otoliths should be applicable to other fish species and make it possible to link growth and mortality rates to life history and environmental occurrences. |
| Keywords: | otoliths toadfish growth back calculations Opsanus tau |
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