Mate-search efficiency can determine the evolution of separate sexes and the stability of hermaphroditism in animals

The American Naturalist
Mikael Puurtinen, V Kaitala

Abstract

Limited availability of mating partners has been proposed as an explanation for the occurrence of simultaneous hermaphroditism in animals with pair mating. When low population density or low mobility of a species limits the number of potential mates, simultaneous hermaphrodites may have a selective advantage because, first, they are able to adjust the allocation of resources between male and female functions in order to maximize fitness; second, in a hermaphroditic population the likelihood of meeting a partner is higher because all individuals are potential mates; and, third, in the absence of mating partners, many simultaneously hermaphroditic animals have the option of reproducing through self-fertilization. Recognizing that mate availability is central to the existing theory of hermaphroditism in animals, it is important to examine the effects of mate search on predictions of the stability of hermaphroditism. Many hermaphroditic animals can increase the number of potential mates they contact by active searching. However, since mate search has costs in terms of time and energy, the increased number of potential mates will be traded off against the amount of resources that can be allocated to the production of gametes. We exp...Continue Reading

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Citations

May 11, 2013·Integrative and Comparative Biology·M Cristina Lorenzi, Gabriella Sella
Aug 24, 2013·Integrative and Comparative Biology·Janet L Leonard
Jul 25, 2014·The American Naturalist·Jonathan M HenshawHanna Kokko
Oct 21, 2015·Current Biology : CB·Douglas K Reilly, Jagan Srinivasan
Feb 28, 2009·Evolution; International Journal of Organic Evolution·Lukas Schärer
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Apr 1, 2008·Journal of Evolutionary Biology·S M Eppley, L K Jesson
Jun 19, 2013·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Mariana HinzmannJorge Machado
Jul 8, 2015·Evolution; International Journal of Organic Evolution·Jonathan M HenshawMichael D Jennions
Apr 26, 2016·Evolution; International Journal of Organic Evolution·Jussi LehtonenLukas Schärer
Jun 17, 2018·Journal of Evolutionary Biology·Marcel E Dorken, Wendy E Van Drunen
Dec 7, 2017·BMC Evolutionary Biology·Daniel A Sasson, Joseph F Ryan

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