Reproductive biology of the lumpsucker fish Lethotremus awae in Sizugawa Bay, northern Honshu, Japan

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  • 東北太平洋岸志津川湾におけるダンゴウオLethotremus awaeの繁殖生態

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Abstract

Reproductive patterns in the lumpsucker fish Lethotremus awae were investigated by field observations and histological analyses. Males guarded egg masses in empty shells of the ribbed barnacle Balanus rostratus or in an empty hole, bored in offshore rocks by the boring bivalve Penitella kamakurensis, at 7-17 mm water depth. The number of egg batches per nest was ranged 1-5, and the number of eggs per batch was 66-133. Eggs shaped sphere with 1.6 to 1.9 mm diameter and adhered to each other. Histological observation on ovaries indicated that females are multiple spawners within a single mating season. The male first dorsal fin was enlarged and crown-like, being a conspicuous feature of sexual dimorphism.

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Details 詳細情報について

  • CRID
    1390282680488811392
  • NII Article ID
    130003397765
  • NII Book ID
    AN00063212
  • DOI
    10.11369/jji.56.159
  • ISSN
    18847374
    00215090
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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