底延繩にかかつているサメの分布構造
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概要
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This report is written for the purpose of showing very rare examples suggesting the self-spacing occupation of the hooks on setline by fish. The results of the analyses on 35 series of records of the hooked positions of sharks along setline on the Eastern Sea show that in autumnal season individuals of two species of sharks, Carcharinus and Sphyrna, occupied the hooks on setline somewhat repulsively one another. And such structure as this is thought to be reasonable, when we take many habits of sharks into consideration. But there still remains a doubt whether or not such a repulsive pattern as that found in this report can also be expected to be found in other seasons or in other place moreover in the distribution pattern of other species of sharks of inabundance.
- 公益社団法人 日本水産学会の論文
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