Juvenile Recruitment Strategies and the Coexistence of Territorial Pomacentrid Fishes
Studies of recruitment of juvenile territorial pomacentrids at sites on the Great Barrier Reef are presented. Census data over a 38-month period are used to identify strategies used by juveniles settling among adults of three species on the shallow reef slope. Habitat preferences of two reef flat species are compared, and the responses of juveniles to adults and of adults to juveniles are examined experimentally. For Pomacentrus wardi and at least some other members of this guild, habitat preferences of recruits determine which habitats are occupied. Juveniles use a set of strategies to enable them to infiltrate suitable habitat occupied by adults of their own and other species. It is possible that juvenile-adult interactions favor the establishment of mixed-species populations in those habitats where two or more species occur.
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Document Type: Research Article
Publication date: 1980-03-01
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