操業を通じて見た支那東海底魚資源について―2 : 機船底曳網漁業の操業条件に依るキダイ漁獲の變動について

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  • Investigation on bottom fish population in the Eastern Sea from the view point of fishing operation. ………II Fluctuation of "kidai"(Taius tumifrons) catch caused by operation factors.
  • 操業を通じて見た支那東海底魚資源について II. 機船底曳網漁業の操業条件に依るキダイ漁獲の変動について

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抄録

Using the same data of the first report, the author investigated the fluctuation of "kidai" catch caused each operating factor. 1. Netting direction: Max. on W, min. on NW. Fig. 1 2. Wind direction: Max. on W, min. on NW Fig. 2 3. Weather: Min. at rain, other normal. Fig. 3 4. Wind force: Max. in 3~4 (Beaufort's wind acale) Fig. 4 5. Hauling depth: Max. in 92~100 meters. Fig. 5 6. Bottom state: Max. in sM, min. in M. Fig. 6 7. Max. at daytime and sunset, min. in night. Fig. 7 All these results are siginificant by F-test (a<0.05).

長崎大学水産学部研究報告, v.1, pp.29-32; 1953

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