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Postzygotic Isolation Evolves before Prezygotic Isolation between Fresh and Saltwater Populations of the Rainwater Killifish, Lucania parva
Joint Authors
Kozak, Genevieve M.
Colon, Beatrice L.
Rudolph, Arthur B.
Fuller, Rebecca C.
Source
International Journal of Evolutionary Biology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-01-30
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Divergent natural selection has the potential to drive the evolution of reproductive isolation.
The euryhaline killifish Lucania parva has stable populations in both fresh water and salt water.
Lucania parva and its sister species, the freshwater L.
goodei, are isolated by both prezygotic and postzygotic barriers.
To further test whether adaptation to salinity has led to the evolution of these isolating barriers, we tested for incipient reproductive isolation within L.
parva by crossing freshwater and saltwater populations.
We found no evidence for prezygotic isolation, but reduced hybrid survival indicated that postzygotic isolation existed between L.
parva populations.
Therefore, postzygotic isolation evolved before prezygotic isolation in these ecologically divergent populations.
Previous work on these species raised eggs with methylene blue, which acts as a fungicide.
We found this fungicide distorts the pattern of postzygotic isolation by increasing fresh water survival in L.
parva, masking species/population differences, and underestimating hybrid inviability.
American Psychological Association (APA)
Kozak, Genevieve M.& Rudolph, Arthur B.& Colon, Beatrice L.& Fuller, Rebecca C.. 2012. Postzygotic Isolation Evolves before Prezygotic Isolation between Fresh and Saltwater Populations of the Rainwater Killifish, Lucania parva. International Journal of Evolutionary Biology،Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-478481
Modern Language Association (MLA)
Kozak, Genevieve M.…[et al.]. Postzygotic Isolation Evolves before Prezygotic Isolation between Fresh and Saltwater Populations of the Rainwater Killifish, Lucania parva. International Journal of Evolutionary Biology No. 2012 (2012), pp.1-11.
https://search.emarefa.net/detail/BIM-478481
American Medical Association (AMA)
Kozak, Genevieve M.& Rudolph, Arthur B.& Colon, Beatrice L.& Fuller, Rebecca C.. Postzygotic Isolation Evolves before Prezygotic Isolation between Fresh and Saltwater Populations of the Rainwater Killifish, Lucania parva. International Journal of Evolutionary Biology. 2012. Vol. 2012, no. 2012, pp.1-11.
https://search.emarefa.net/detail/BIM-478481
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-478481