Sexual Dimorphism of the Cheliped in the Prawn Macrobrachium nipponense (de Haan) and Its Significance in Reproductive Behavior

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概要

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• The male of the freshwater prawn Macrobrachium nipponense shows great growth in cheliped length relative to body length after maturation. The significance of the male's long chelipeds was investigated in relation to its reproductive behavior in captivity. The mating took place between a mature male and female. The female was guarded between the long chelipeds of the male throughout pair formation for several hours. Direct and persistent interference with the pairing male and female by another mature male was observed. Moreover, other immature individuals and females approaching the pair were also observed. The long chelipeds of the male are regarded as an effective apparatus for his reproductive success in the two aspects : to guard the soft-shelled female immediately after pre-spawning moult from cannibalistic predators, and to guard the female during mating from other male rivals.

• 社団法人日本動物学会の論文
• 1981-09-25

著者

• Mashiko Kazuo

  Department Of Zoology Faculty Of Medicine Teikyo Universitey

関連論文

• Evidence of Differentiation between the Estuarine and Upper Freshwater Population Inhabiting the Same Water System in the Long-armed Prawn Macrobrachium nipponense (de Haan)
• On the Relation between Digestibility and Amount of Food Intake of an Eleotrid Goby, Odontobutis obscurus
• Sexual Dimorphism of the Cheliped in the Prawn Macrobrachium nipponense (de Haan) and Its Significance in Reproductive Behavior
• Comparison of Survival and Development between Large and Small Neonates of a Freshwater Prawn under Starvation Conditions(Behavior Biology and Ecology)
• Differences in the Egg and Clutch Sizes of the Prawn Macrobrachium nipponense (de Haan) between Brackish and Fresh Waters of a River

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