Ecological studies on the Japanese mantis shrimp Oratosquilla oratoria (De HAAN). V. Food habits of the Japanese mantis shrimp in the benthic community of Hakata Bay.

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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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Other Title
  • 博多湾の底生群集におけるシャコの食性
  • 博多湾の底生群集におけるシャコの食性〔英文〕
  • ハカタワン ノ テイセイ グンシュウ ニ オケル シャコ ノ ショクセイ エイ

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Abstract

Examination of the stomach contents of the Japanese mantis shrimp Oratosguilla oratoria showed that this species is a very intensive predator on the Macrura which is a principal component of the benthic megalofaunal community. Thus, the mantis shrimp, by feeding largely on the Macrura, may have a major influence on this community structure in Hakata Bay. The shrimp was also revealed to be an intensive predator on the Pelecypoda despite underestimation of preda-tion intensity, based on the stomach contents, because of its shell-smashing behaviour. Further-more, this study showed that many Macrura were captured during September and November by the mantis shrimp and that female shrimp of reproductive sizes also consume many Pelecypoda, As a prey species, mantis shrimp themselves were found infrequently in the digestive tracts of other predators.

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