カタクチイワシ仔魚の耳石にみられる日輪構造

DOI 日本農学文献記事索引 Web Site 被引用文献11件

書誌事項

タイトル別名
  • Daily growth increments in otoliths of Japanese anchovy larvae Engraulis japonica.
  • カタクチイワシ仔魚の耳石にみられる日輪構造〔英文〕
  • カタクチイワシ シギョ ノ ジセキ ニ ミラレル ニチリン コウゾウ エイブン

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説明

It was verified that daily deposition of increments in otoliths was initiated with the start of feeding in reared Japanese anchovy larvae. The range and the coefficient of variation of counts within age group were 2-5 and 6-10%, respectively and did not vary with age. The deposition rate of increment was considered to be independent with growth rate. The width of each increment was 1-2 μm around the nuclear margin and increased gradually to 6-9 μm, corresponding to the appearance of subdaily rings. The otolith growth was allometric with respect to the standard length. The relatinship between otolith radius and standard length seemed to be linear in log-log plot. As daily increments observed in field-collected larvae were easier to count than those of laboratory-reared ones, the determination of field-collected sampls based on daily increments was expected to have a satisfactory accuracy.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 50 (7), 1105-1108, 1984

    公益社団法人 日本水産学会

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