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Ichthyological Research

, Volume 47, Issue 2, pp 163–173 | Cite as

Food habits of fishes in azostera marina bed at aburatsubo, central japan

  • Masahiro Horinouchi
  • Mitsuhiko Sano
Article

Abstract

To clarify the feeding habits of seagrass fishes, the gut contents of 31 fish species collected in aZostera marina bed at Aburatsubo central Japan, were examined. Ontogenetic changes in food preference were recognized in 12 species. In general, juveniles of the latter preyed mainly on small crustaceans (e.g., gammaridean amphipods) or planktonic animals (e.g., calanoid and cyclopoid copepods), subsequently changing to other prey items (e.g., hard-shelled animals) with growth. Cluster analysis based on dietary overlaps showed that the seagrass fish assemblage comprised seven feeding guilds (small-crustacean, planktonic-animal, large-crustacean, polychaete, fish, hard-shelled mollusc and detritus feeders). Of these, small-crustacean feeders and planktonic-animal feeders were the most abundantly represented, including juveniles of several species, which, when adult, transferred to other feeding guilds. On the other hand detritivores were represented by a single species.

Key words

Trophic guilds ontogenetic changes seagrass bed seagrass fish 

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Copyright information

© The Ichthyological Society of Japan 2000

Authors and Affiliations

  • Masahiro Horinouchi
    • 1
  • Mitsuhiko Sano
    • 1
  1. 1.Department of Global Agricultural Sciences Graduate School of Agricultural and Life SciencesUniversity of TokyoTokyoJapan

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