Evidence of Differentiation between the Estuarine and Upper Freshwater Population Inhabiting the Same Water System in the Long-armed Prawn Macrobrachium nipponense (de Haan)

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概要

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• The genetic basis of the difference in reproductive traits of the long-armed prawn Macrobrachium nipponense (de Haan) between the brackish and upper freshwater populations within the same water system was investigated in the laboratory. Their distinct egg sizes were independent of salinity in parental growing media, though the prawns collected from the upper fresh waters failed to reproduce in the experimental brackish water (10 ‰ S). Between the two populations, furthermore, the survival and developmental responses of newly hatched larvae to extremes in salinity (0‰ and 30.5‰ S) differed contrastively. These facts are considered to indicate a genetic distance between them.

• 社団法人日本動物学会の論文
• 1983-06-25

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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