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Male-Female Interactions and the Evolution of Postmating Prezygotic Reproductive Isolation among Species of the Virilis Subgroup
Joint Authors
Source
International Journal of Evolutionary Biology
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-03-30
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Reproductive isolation reduces breeding between species.
Traditionally, prezygotic and postzygotic barriers to reproduction have been broadly studied, but in recent years, attention has been brought to the existence of barriers that act after copulation but before fertilization.
Here, we show that when D.
virilis females from different geographic locations mate with D.
novamexicana males, egg laying is normal, but fertilization rates are severely reduced, despite normal rates of sperm transfer.
This reduction in fertilization is probably due to lower retention of heterospecific sperm in female storage organs one-to-two days after copulation.
An inspection of egg hatchability in crosses between females and males from other virilis subgroup species reveals that isolation due to poor egg hatchability likely evolved during the diversification of D.
virilis/D.
lummei from species of the novamexicana-americana clade.
Interestingly, the number of eggs laid by D.
virilis females in heterospecific crosses was not different from the numbers of eggs laid in conspecific crosses, suggesting that females exert some form of cryptic control over the heterospecific ejaculate and that future studies should focus on how female and female-sperm interactions contribute to the loss or active exclusion of heterospecific sperm from storage.
American Psychological Association (APA)
Sagga, Nada& Civetta, Alberto. 2011. Male-Female Interactions and the Evolution of Postmating Prezygotic Reproductive Isolation among Species of the Virilis Subgroup. International Journal of Evolutionary Biology،Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-475386
Modern Language Association (MLA)
Sagga, Nada& Civetta, Alberto. Male-Female Interactions and the Evolution of Postmating Prezygotic Reproductive Isolation among Species of the Virilis Subgroup. International Journal of Evolutionary Biology No. 2011 (2011), pp.1-11.
https://search.emarefa.net/detail/BIM-475386
American Medical Association (AMA)
Sagga, Nada& Civetta, Alberto. Male-Female Interactions and the Evolution of Postmating Prezygotic Reproductive Isolation among Species of the Virilis Subgroup. International Journal of Evolutionary Biology. 2011. Vol. 2011, no. 2011, pp.1-11.
https://search.emarefa.net/detail/BIM-475386
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-475386