Award Date
1-1-1994
Degree Type
Thesis
Degree Name
Master of Science (MS)
Department
Biological Science
Number of Pages
75
Abstract
Crenichthys (Springfish) and Empetrichthys (Poolfish) are two relictual genera of cyprinodontiform fishes that are restricted to the state of Nevada. Of five families proposed, three, Cyprinodontidae, Goodeidae, and Empetrichthyidae, are still under consideration. The Goodeidae, fishes endemic to the Mexican Plateau, are viviparous, whereas Crenichthys and Empetrichthys are oviparous. Approximately 300 base pairs of the mitochondrial gene Cytochrome-b were sequenced in order to address the familial phylogenetic relationships of Crenichthys and Empetrichthys. All analyses concur that Crenichthys and Empetrichthys are related to members of the family Goodeidae rather than to the Cyprinodontidae. Therefore, this phylogeny supports a model of historical biogeographic affinities between fishes of the Mexican Plateau and fishes of the Mojave and Great Basin deserts.
Keywords
Affinities; Crenichthys; Empetrichthys; Mtdna; Phylogenetic
Controlled Subject
Zoology; Biology
File Format
File Size
2826.24 KB
Degree Grantor
University of Nevada, Las Vegas
Language
English
Permissions
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Repository Citation
Grant, E. Christopher, "The phylogenetic affinities of Crenichthys and Empetrichthys using mtDna" (1994). UNLV Retrospective Theses & Dissertations. 378.
http://dx.doi.org/10.25669/hdww-twhm
Rights
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