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Showing 1 to 4 of 4 for “"Killifishes"”.
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Chromosomal complements and variation in some Venezuelan annual killifishes (cyprinodontidae)
Karyotypes of nine species of Venezuelan annual killifishes were compared. Karyotypic differences were found between species and between some genera. A chromosomal sexual dimorphism was found in <u>Pterolebias hoignei</u> (2N = 46). Males of this species possess a single large "Y" chromosome. No …
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Tests of Reproductive Isolation Between the Fishes Fundulus heteroclitus and F. grandis
The closely related killifishes Fundulus heteroclitus and F. grandis hybridize in a small region where their ranges overlap in coastal northeastern Florida. Hybrids of these species are rare in frequency within the contact zone, suggesting the presence of relatively strong reproductive isolation …