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Noncompetitive Gametic Isolation between Sibling Species of Cricket : A Hypothesized Link between Within-Population Incompatibility and Reproductive Isolation between Species
Joint Authors
DiRienzo, Nicholas
Marshall, Jeremy L.
Source
International Journal of Evolutionary Biology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-29
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
Postmating, prezygotic phenotypes are a common mechanism of reproductive isolation.
Here, we describe the dynamics of a noncompetitive gametic isolation phenotype (namely, the ability of a male to induce a female to lay eggs) in a group of recently diverged crickets that are primarily isolated from each other by this phenotype.
We not only show that heterospecific males are less able to induce females to lay eggs but that there are male by female incompatibilities in this phenotype that occur within populations.
We also identify a protein in the female reproductive tract that correlates with the number of eggs that she was induced to lay.
Functional genetic tests using RNAi confirm that the function of this protein is linked to egg-laying induction.
Moreover, the dysfunction of this protein appears to underlie both within-population incompatibilities and between-species divergence—thus suggesting a common genetic pathway underlies both.
However, this is only correlative evidence and further research is needed to assess whether or not the same mutations in the same genes underlie variation at both levels.
American Psychological Association (APA)
Marshall, Jeremy L.& DiRienzo, Nicholas. 2012. Noncompetitive Gametic Isolation between Sibling Species of Cricket : A Hypothesized Link between Within-Population Incompatibility and Reproductive Isolation between Species. International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-483539
Modern Language Association (MLA)
Marshall, Jeremy L.& DiRienzo, Nicholas. Noncompetitive Gametic Isolation between Sibling Species of Cricket : A Hypothesized Link between Within-Population Incompatibility and Reproductive Isolation between Species. International Journal of Evolutionary Biology No. 2012 (2012), pp.1-7.
https://search.emarefa.net/detail/BIM-483539
American Medical Association (AMA)
Marshall, Jeremy L.& DiRienzo, Nicholas. Noncompetitive Gametic Isolation between Sibling Species of Cricket : A Hypothesized Link between Within-Population Incompatibility and Reproductive Isolation between Species. International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-7.
https://search.emarefa.net/detail/BIM-483539
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-483539