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Free Content Space Utilization by the Cocoa Damselfish, Eupomacentrus Variabilis (Pisces: Pomacentridae)

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Eupomacentrus variabilis, the cocoa damselfish, has been described as a home ranging species. Home ranges off the coast of Florida consisted of three distinct parts, treated in different manners by the resident damselfish. The core constituted 11.5% of the total home range, where the resident spent 41% of its time, was used as a nest site by males and for shelter by members of both sexes. Paths were routes used to travel from one part of the range to another, and peripheral areas were sections of the range seldom visited but delimited by border patrols. The core was defended against all intruders. Conspecifics were excluded from the entire range but non-conspecifics were not. In this sense, it resembled the serial territory of E. planifrons. The large size of the range held by E. variabilis as compared with its congeners is probably a result of dietary differences.

Document Type: Research Article

Publication date: March 1, 1980

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