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The evolution of copulatory organs, internal fertilization, placentae and viviparity in killifishes ... (Site not responding. Last check: 2007-11-07) |
 | | Department of Ecology and Evolution, State University of New York, Stony Brook, New York 11794, U.S.A. University of Georgia's, Savannah River Ecology Laboratory, Drawer E, Aiken, South Carolina 29802, U.S.A. Cyprinodontiforms are a diverse group of approximately 900 pantropical and temperate fishes, mostly found in freshwater. |
 | | The evolution of bundled sperm, spermatozeugmata, is probably not a prerequisite for internal fertilization because at least one species with internal fertilization has free spermatozoa. |
 | | The evolution of copulatory organs, internal fertilization, placentae and viviparity in killifishes (Cyprinodontiformes) inferred from a DNA phylogeny of the tyrosine kinase gene X-src. |
| www.uga.edu /srel/Reprint/1831.htm (345 words) |
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