The emergence period of larvae from the adult mussel in the native species of bitterling <i>Acheilognathus typus</i> and an invasive bitterling <i>Rodeus ocellatus</i>.

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  • ゼニタナゴ<i>Acheilognathus typus</i> と移入種であるタイリクバラタナゴ<i>Rhodeus ocellatus</i> の二枚貝からの浮上時期

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<p>The emergence periods of larvae from the adult mussel in an endangered bitterling Acheilognathus typus and invasive bitterling Rodeus ocellatus were investigated in a sympatric habitat. The emergence period of A. typus was from late May to late June. The peak of emergence in A. typus was late May when the mean water temperature was at 18.6℃. The emergence period of R. ocellatus was from early-June to late October. The peak of emergence in R. ocellatus occurred from late June to mid July. The period and the peak of the emergence in A. typus was earlier than R. ocellatus. The emergence of A. typus was concentrated during one month.These results indicate that the investigation of A. typus larvae should be conducted within a few weeks after the beginning of larvae emergence.</p>

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Details 詳細情報について

  • CRID
    1390282680800462720
  • NII Article ID
    130006199849
  • DOI
    10.20745/izu.1.0_11
  • ISSN
    24242101
    18819559
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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