ゴマサバの仔,稚魚の分布移動と環境要因の研究-II

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タイトル別名
  • STUDIES ON THE RELATIONSHIPS BETWEEN THE DRIFTING DISTRIBUTION OF MACKEREL LARVAE, <i>PNEUMATOPHORUS TAPEINOCEPHALUS</i> BLEEKER, AND THE ENVIRONMENTAL FACTORS-II
  • ゴマサバ ノ シ , チギョ ノ ブンプ イドウ ト カンキョウ ヨウイン ノ ケンキュウ 2
  • ON THE LARVAE AND THE SEA CONDITIONS IN THE SURFACE AND THE MIDDLE-LAYERS AROUND THE OSUMI ISLANDS.
  • 大隅群島周辺における表層および中層の採集魚と海況

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説明

The present paper gives the observations reterable to the distribution of mackerel larvae, P. tapeinocephalus, collected by larval net operated at the six layers of 0 (surface), 10, 20, 30, 40, and 50 meters in the region covering Kagoshima Bay and the Osumi channel, and some considerations, especially on the collecting method in relation to the current velocity.<br> The results (Tables 2 and 3) are summarized as the following lines.<br> 1) From April to June 1960, and in March 1961 the mackerel larvae are found at all the observed layers but 50 meter one, in the fishing ground (of the adult fish) of the said region.<br> 2) The collected larvae are of 3.1-21.0mm in total length. Most of them are small, of less than 10mm in total length (Fig. 3).<br> 3) The collection rate from the 10m layer rises to the highest, that is of 67%.<br> 4) The large number of samples are collected under the conditions of 18-19°C in water temperature, and 34.7-34.8% in salinity (Fig. 4).

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 27 (12), 1041-1046, 1961

    公益社団法人 日本水産学会

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