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>Depth Zonation, Micro habitat, and Morphology of Three Species of Acanthemblemaria (Pisces: Blennioidea) in the Guif of California, Mexico
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Depth Zonation, Micro habitat, and Morphology of Three Species of Acanthemblemaria (Pisces: Blennioidea) in the Guif of California, Mexico
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机译：Depth Zonation, Micro habitat, and Morphology of Three Species of Acanthemblemaria (Pisces: Blennioidea) in the Guif of California, Mexico
Abstract.The utilization of the spatial resources of refuge type, size and depth placement is investigated in the three sympatric species ofAcanthemblemariaat the cape region of Baja California, Mexico.A. balanorumoccupies barnacle testes(Balanus tintinnabulum), A. macrospilusoccupies barnacles and mollusk tubes (vermetid gastropods and pholadids), andA. crockerioccupies only mollusk tubes (pholadids). Refuge diameter overlap is higher than overlap in depth.A. crockericonsistently occupies depths below 5m. Competition experiments for barnacle refuges among the three species indicate thatA. balanorumis a superior competitor for such refuges. Prior residency of a less superior species changes the outcome of refuge competition in its favor. The morphological specialization ofA. balanorumandA. macrospilusis evident in a high correlation between head size and standard length.A. balanorumselects refuges with entrance diameters highly correlated to standard length.
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