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Genetic Delineation of Management Units for the Desert Tortoise, Gopherus agassizii, in Northeastern Mojave Desert

Hugh B. Britten, Brett R. Riddle, Peter F. Brussard, Ron Marlow and Thomas E. Lee, Jr.
Copeia
Vol. 1997, No. 3 (Aug. 1, 1997), pp. 523-530
DOI: 10.2307/1447556
Stable URL: http://www.jstor.org/stable/1447556
Page Count: 8
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Genetic Delineation of Management Units for the Desert Tortoise, Gopherus agassizii, in Northeastern Mojave Desert
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Abstract

Blood samples from 236 desert tortoises, Gopherus agassizii, representing 15 sites in northeastern Mojave Desert (Nevada, Utah), were assayed for variation in allozymes and mitochondrial DNA restriction sites. Morphometric measurements from 257 tortoises from the same locations were subjected to sheared principal component analysis. The 15 localities were partitioned into five management units. Geographic concordance between the five management units delineated in this study and proposed Desert Wildlife Management Areas (DWMAs), delineated ecologically, was assessed. Suggestions for improving placement and boundaries of DWMAs are discussed.

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