The Coachella Valley Fringe-Toed Lizard (Uma inornata): Genetic Diversity and Phylogenetic Relationships of an Endangered Species

Trépanier, T.L.; Murphy, Robert W.

doi:10.1006/mpev.2000.0881

Cited by 19 publications

(31 citation statements)

References 20 publications

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“…Overall, our analysis of C. occipitalis mitochondrial genetic variation appears to produce results superficially concordant to intraspecific variation observed in many other Mojave/Sonoran codistributed reptiles (i.e. Crotalus, Douglas et al 2006;Sceloporus magister, Schulte et al 2006; Uma scoparia and Uma notata, Trépanier and Murphy 2001;Murphy et al 2007). In particular, mtDNA analyses of two species of rattlesnakes in the desert southwest (i.e.…”

Section: Phylogeographysupporting

confidence: 72%

Molecular and phenotypic diversity in Chionactis occipitalis (Western Shovel-nosed Snake), with emphasis on the status of C. o. klauberi (Tucson Shovel-nosed Snake).

et al. 2007

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Chionactis occipitalis (Western Shovel-nosed Snake) is a small colubrid snake inhabiting the arid regions of the Mojave, Sonoran, and Colorado deserts. Morphological assessments of taxonomy currently recognize four subspecies. However, these taxonomic proposals were largely based on weak morphological differentiation and inadequate geographic sampling. Our goal was to explore evolutionary relationships and boundaries among subspecies of C. occipitalis, with particular focus on individuals within the known range of C. o. klauberi (Tucson Shovelnosed snake). Population sizes and range for C. o. klauberi have declined over the last 25 years due to habitat alteration and loss prompting a petition to list this subspecies as endangered. We examined the phylogeography, population structure, and subspecific taxonomy of C. occipitalis across its geographic range with genetic analysis of 1100 bases of mitochondrial DNA sequence and reanalysis of 14 morphological characters from 1543 museum specimens. We estimated the species gene phylogeny from 81 snakes using Bayesian inference and explored possible factors influencing genetic variation using landscape genetic analyses. Phylogenetic and population genetic analyses reveal genetic isolation and independent evolutionary trajectories for two primary clades. Our data indicate that diversification between these clades has developed as a result of both historical vicariance and environmental isolating mechanisms. Thus these two clades likely comprise 'evolutionary significant units' (ESUs). Neither molecular nor morphological data are concordant with the traditional C. occipitalis subspecies taxonomy. Mitochondrial sequences suggest specimens recognized as C. o. klauberi are embedded in a larger geographic clade whose range has expanded from western Arizona populations, and these data are concordant with clinal longitudinal variation in morphology.

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Section: Phylogeographysupporting

confidence: 72%

Molecular and phenotypic diversity in Chionactis occipitalis (Western Shovel-nosed Snake), with emphasis on the status of C. o. klauberi (Tucson Shovel-nosed Snake).

et al. 2007

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“…Double stranded DNA was prepared for sequencing using the polymerase chain reaction (PCR) (Saiki et al, 1988). Amplification and sequencing protocols follow (Tre´panier and Murphy, 2001). The PCR product from the ATPase 6 mtDNA gene was a 599 bp fragment.…”

Section: Molecular Techniquesmentioning

confidence: 99%

“…The genealogical history of lizards can also be used in the reconstruction of geographic history, especially when their distribution is highly restricted to specific habitats. For example, all species of fringe-toed lizards of the genus Uma are associated with paleo-lakes and drainage systems (Norris, 1958;Tre´panier and Murphy, 2001). The history of these lizards could reveal much about the development of the hydrologic systems of arid North America.…”

Section: Introductionmentioning

confidence: 98%

Conservation genetics, evolution and distinct population segments of the Mojave fringe-toed lizard, Uma scoparia

Murphy

Trépanier

Morafka

2006

Journal of Arid Environments

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“…This separation is biotic as well as physical. Isolated sand dunes form unique insular habitats (Britton & Rust 1996) that are inhabited by aeolian sand-obligate plants (Pavlick 1985(Pavlick , 1989, mammals (Brown 1973), arthropods (Seely 1978, Rust 1986, Britton & Rust 1996, Barrows 2000, and reptiles, particularly members of the saurian genus Uma in North America (Norris 1958, Trépanier & Murphy 2001. In the present study we focused on patterns of persistence and extinction for one of the sand dune obligate reptiles, the Coachella Valley fringe-toed lizard Uma inornata, which was listed in 1980 as threatened (US federal) and endangered (State of California).…”

Section: Introductionmentioning

confidence: 99%

Persistence and local extinctions of endangered lizardUma inornataon isolated habitat patches

Barrows

Allen²

2007

Endang. Species Res.

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The Coachella Valley Fringe-Toed Lizard (Uma inornata): Genetic Diversity and Phylogenetic Relationships of an Endangered Species

Cited by 19 publications

References 20 publications

Molecular and phenotypic diversity in Chionactis occipitalis (Western Shovel-nosed Snake), with emphasis on the status of C. o. klauberi (Tucson Shovel-nosed Snake).

Molecular and phenotypic diversity in Chionactis occipitalis (Western Shovel-nosed Snake), with emphasis on the status of C. o. klauberi (Tucson Shovel-nosed Snake).

Conservation genetics, evolution and distinct population segments of the Mojave fringe-toed lizard, Uma scoparia

Persistence and local extinctions of endangered lizardUma inornataon isolated habitat patches

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