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Corpus Systématique Animale

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Offshore distributional patterns of Hawaiian fish larvae

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Springer (journals)
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  • J. M. Leis 1,2
  • J. M. Miller 3
  • 1) hawaii Institute of Marine Biology, University of Hawaii, Honolulu, Hawaii, USA
  • 2) Department of Oceanography, University of Hawaii, Honolulu, Hawaii, USA
  • 3) Department of Zoology, North Carolina State University, Raleigh, North Carolina, USA

An analysis of ichthyoplankton samples based on relative abundance reveals pronounced inshore/offshore distributional gradients for most Hawaiian fish larvae. Larvae of pelagic bay species are found almost exclusively in semi-enclosed bays and estuaries. Larvae of pelagic neritic species are more or less uniformly distributed with distance from shore. The larvae of reef species with non-pelagic eggs are most abundant close to shore, while those of reef species with pelagic eggs are most abundant offshore. Finally, the larvae of offshore (primarily mesopelagic) species show no clear pattern but frequently occur in high numbers nearshore. Within any group, variation in pattern was often evident; for example, although Hawaiian fishes of both the families Labridae and Mullidae spawn pelagic eggs, larvae of the former had not peaked in abundance 12 km from shore while larvae of the latter had peaked between 0.5 and 2 km. Some larvae which occur offshore are highly specialized morphologically for a pelagic existence (e.g. Chaetodontidae, which is illustrated) while others are little modified (e.g. Labridae). These findings indicate ichthyoplankton surveys in tropical areas must sample offshore areas in addition to the inshore adult habitat to obtain a complete picture.

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  • 1 - natural sciences
  • 2 - biology
  • 3 - marine biology & hydrobiology
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  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
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  • 1 - Physical Sciences ; 2 - Environmental Science ; 3 - Ecology
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Aquatic Science
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
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  • 1 - science ; 2 - marine & freshwater biology
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Marine Biology

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