Genetic variation of pronghorn (Antilocapra americana) populations in North America /
To estimate the genetic diversity within and among icrofilm Inc. pronghorn populations, and to investigate the pylogenetic relationships among populations, I examined nucleotide sequences from a 282 bp segment of the mitochondrion control region. Genetic variation of pronghorn also was analyzed over...
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| Format: | Thesis Book |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1998.
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| Subjects: | |
| Online Access: | http://proxy.library.tamu.edu/login?url=http://proquest.umi.com/pqdweb?did=733050361&sid=1&Fmt=2&clientId=2945&RQT=309&VName=PQD |
| Summary: | To estimate the genetic diversity within and among icrofilm Inc. pronghorn populations, and to investigate the pylogenetic relationships among populations, I examined nucleotide sequences from a 282 bp segment of the mitochondrion control region. Genetic variation of pronghorn also was analyzed over the entire distributional range using four microsatellite loci. DNA sequence analysis was used to search for variability in a paternally inherited genetic locus (intron 6 in the Zfy gene) in pronghorn. MtDNA control-region sequences showed a moderately high level of genetic variability; a total of 28 haplotypes were observed. Three of four microsatellite loci (8M6444, ADCYC and 8M6506) showed high levels of genetic variability with 22, 15 and 10 alleles, respectively. Only locus 8M1824 was monomorphic. No variation was found in the intros of the Zfy locus. Using mitochondrial and microsatellite markers, two genetically differentiated groups of populations were observed. The average Fst (0.086) estimated from microsatellite loci and Gst (0.111) from the mtDNA control-region sequences indicate moderate genetic differences among populations and suggest that gene flow across the continent is restricted. Based upon divergence times estimated from the fossil record, a mutation rate of 0.135% per million years was calculated using ZFY intros sequence data from deer, cow, and pronghorn. Phylogenetic analysis of six species representing the families Antilocapridae, Cervidae, and Bovidae indicates that pronghorn is the sister talon to a glade comprised of Cervidae, and Bovidae, and supports the retention of the monophyletic family Antelocapridae. |
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| Item Description: | Vita. "Major Subject: Wildlife and Fisheries Sciences". |
| Physical Description: | xii, 92 leaves : illustrations ; 28 cm. |
| Bibliography: | Includes bibliographical references (leaves 71-81). |