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Science 28 January 1983:
Vol. 219. no. 4583, pp. 419 - 420
DOI: 10.1126/science.219.4583.419
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Articles

Recruitment and Population Dynamics of a Coral Reef Fish

BENJAMIN C. VICTOR 1

1 Department of Biological Science and Marine Science Institute, University of California, Santa Barbara 93106

Daily otolith increments were used to determine the daily pattern of settlement of the bluehead wrasse (Thalassoma bifasciatum), a Caribbean coral reef fish. Recruitment occurs in brief and sporadic episodes even though bluehead wrasses spawn every day. Patterns of recruitment do not correspond to patterns of mortality on the reef. The composition of the adult population directly reflects the relative rates of recruitment of juveniles the year before. The population dynamics of this species may therefore be determined by the supply of recruits and not by the supply of space or some other resource on the reef.

Submitted on April 22, 1982
Revised on August 16, 1982

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Science. ISSN 0036-8075 (print), 1095-9203 (online)