シャコの産卵および卵塊保育行動

DOI 日本農学文献記事索引 Web Site 被引用文献6件

書誌事項

タイトル別名
  • Ecological studies on the Japanese mantis shrimp, Oratosquilla oratoria (DE HAAN). II. Egg laying and egg mass nursing behaviour in the Japanese mantis shrimp.
  • シャコの産卵および卵塊保育行動〔英文〕
  • シャコ ノ サンラン オヨビ ランカイ ホイク コウドウ エイブン
  • Egg laying and egg mass nursing behavior in the Japanese mantis shrimp

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抄録

The spawning and egg mass nursing behaviour, together with the change in external appearance of the egg mass, of the mud-dwelling Japanese mantis shrimp Oratosquilla oratoria were studied using artificial burrows in aquaria.<br> This species usually spawns in a supine posture in the burrow maintaining this posture with the back of abdomen and exopods of uropods against the wall of burrow for almost 3 h. The newly extruded egg mass is amorphous, but the female shrimp compacts it and then shapes it into a thick disc within 1 h and to a thin disc having a marginal turnup within 24 h of spawning. All maxillipeds excluding the raptorial claw are used for the nursing behaviour, i.e. spreading and folding the egg mass, so it is teased out and becomes a tuft shape after 3 days or so.<br> The second gee laying occurred in 2 females about 40 days after the first spawning of each individual at 25°C, and this fact suggests that O. oratoria may spawn more than once in a spawning season in natural warm waters.

収録刊行物

  • 日本水産学会誌

    日本水産学会誌 50 (12), 1969-1973, 1984

    公益社団法人 日本水産学会

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