Skip to main content
Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1976 Oct;73(10):3656–3660. doi: 10.1073/pnas.73.10.3656

Sex ratio, sex change, and natural selection.

E G Leigh Jr, E L Charnov, R R Warner
PMCID: PMC431177  PMID: 1068478

Abstract

We describe the analogy between the theory of natural selection on sex ratio in newborn gonochores (which will not change sex), and on the age of sex change in sequential hermaphrodites (which are all born into one sex and change to the other later on). We also discuss the conditions under which natural selection favors sequential hermaphrodites over gonochores and vice versa. We show that, in a nearly stable population of nearly constant age composition, selection favors a rare mutant if it increases the prospective reproduction of its newborn bearers that are (or while they are) members of one sex by a percentage exceeding the percentage loss to the other sex.

Full text

PDF
3656

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Ghiselin M. T. The evolution of hermaphroditism among animals. Q Rev Biol. 1969 Jun;44(2):189–208. doi: 10.1086/406066. [DOI] [PubMed] [Google Scholar]
  2. Warner R. R., Robertson D. R., Leigh E. G., Jr Sex change and sexual selection. Science. 1975 Nov 14;190(4215):633–638. doi: 10.1126/science.1188360. [DOI] [PubMed] [Google Scholar]

Articles from Proceedings of the National Academy of Sciences of the United States of America are provided here courtesy of National Academy of Sciences

RESOURCES