Ecological studies on the Japanese mantis shrimp, Oratosquilla oratoria (De Haan). IV. Optimal prey size for the Japanese mantis shrimp from structure of the raptorial claw.

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  • Hamano Tatsuo
    Department of Fisheries, Faculty of Agriculture, Kyushu University
  • Matsuura Shuhei
    Department of Fisheries, Faculty of Agriculture, Kyushu University

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  • 捕脚の形態より求めたシャコの最適餌サイズ
  • 捕脚の形態より求めたシャコの最適餌サイズ〔英文〕
  • ホキャク ノ ケイタイ ヨリ モトメ タ シャコ ノ サイテキ エサ サイズ

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The maximum and minimum prey sizes of the Japanese mantis shrimp Oratosquilla oratoria were estimated from equations based on the morphology of the raptorial claw (second maxilliped) and from foraging behaviour. The optimal prey size was predicted, theoretically, from these values and experiments confirming this prediction were conducted using living prey shrimps and artificial prey models. The preferred prey size was approximately the mean between the maximum and minimum values obtained theoretically.

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