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Sperm titration by male seaweed flies, Coelopa frigida



Sperm titration by male seaweed flies, Coelopa frigida



Pakistan Journal of Zoology 29(1): 37-41



Male seaweed flies were paired with a succession of virgin females and were allowed a single prolonged mount. The females produced both fertilized and unfertilized eggs, a condition without which 'sperm titration' by males can not be determined. The SMI-C stock males prefer to mate large more fecund females. The operation of male choice has been supported by the findings that after repeated matings the males do become reproductively incompetent. Evidence has also been sought that the males were not capable of titrating their sperm according to the size of females. The results are considered in the context of 'sperm titration' and its relevance to the evolution of male mate choice.

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Accession: 009445431

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