NDLI: A cost of cryptic female choice in the yellow dung fly

Content Provider	Springer Nature Link
Author	Ward, Paul I. Wilson, Alastair J. Reim, Constanze
Copyright Year	2007
Abstract	Female dung flies Scathophaga stercoraria (L.) store sperm from several males in three or four spermathecae. Selection on the number of spermathecae was successful and the morphological intermediate stages in the evolution from three to four spermathecae are illustrated. The genetic quality of a male from a female’s perspective depends on an interaction between their genotypes and the microhabitat in which the offspring will grow. Females influence the paternity pattern of their offspring, and do this differently in different microhabitats. Females with four spermathecae are better able to influence paternity than are those with three spermathecae. However, there must be a cost to building and maintaining an extra spermatheca. We estimate, using the animal model on pedigree data, that this cost is approximately five eggs per clutch, i.e. around 8% of the mean clutch size. This is a substantial cost and such costs should not be ignored in discussions of the benefits to females of assessing the genetic qualities of their mating partners. We suggest that the number of spermathecae in the study population is stable because the relative benefits in quality of offspring through cryptic female choice is balanced by the costs in total numbers of offspring.
Starting Page	63
Ending Page	67
Page Count	5
File Format	PDF
ISSN	00166707
Journal	Genetica
Volume Number	134
Issue Number	1
e-ISSN	15736857
Language	English
Publisher	Springer Netherlands
Publisher Date	2007-09-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antagonistic pleiotropy Heritability Postcopulatory selection Selection experiment Scatophaga Sperm competition Microbial Genetics and Genomics Human Genetics Plant Genetics & Genomics Animal Genetics and Genomics Life Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Animal Science and Zoology Insect Science

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