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Duration of life and mortality rates in male and female phenotypes in three sex chromosomal genotypes (XX,XY,YY) in the killifish,Oryzias latipes

✍ Scribed by Fineman, Robert ;Hamilton, James ;Siler, William

Publisher: John Wiley and Sons
Year: 1974
Tongue: English
Weight: 379 KB
Volume: 188
Category: Article
ISSN: 0022-104X
DOI: 10.1002/jez.1401880104

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✦ Synopsis

Abstract

Males were shown to be shorter‐lived than females in most species for which data have been avaiable. The present study, utilizing phenotypic sex‐reversal in various genotypes (XX,XY,YY) of the killifish Oryzias latipes, suggests that males outlive females. The stress of producing many large eggs over the major part of the female's life was probably associated with their significantly shorter lifespan.

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