Mineral Lick Use and Movement in a Remnant Desert Bighorn Sheep Population

1985 ◽  
Vol 49 (4) ◽  
pp. 994 ◽  
Author(s):  
Tom J. Watts ◽  
Sanford D. Schemnitz
Keyword(s):  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Sheep Population ◽  
Mineral Lick

scholarly journals Genetic assessment of a bighorn sheep population expansion in the Silver Bell Mountains, Arizona

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5978
Author(s):  
John A. Erwin ◽  
Karla Vargas ◽  
Brian R. Blais ◽  
Kendell Bennett ◽  
Julia Muldoon ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Population Expansion ◽  
Rocky Mountain ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Recent Population Expansion ◽  
Sheep Population ◽  
Mitochondrial Haplotypes ◽  
Genetic Sampling ◽  
Silver Bell Mountains

Background The isolated population of desert bighorn sheep in the Silver Bell Mountains of southern Arizona underwent an unprecedented expansion in merely four years. We hypothesized that immigration from neighboring bighorn sheep populations could have caused the increase in numbers as detected by Arizona Game and Fish Department annual aerial counts. Methods We applied a multilocus genetic approach using mitochondrial DNA and nuclear microsatellite markers for genetic analyses to find evidence of immigration. We sampled the Silver Bell Mountains bighorn sheep before (2003) and during (2015) the population expansion, and a small number of available samples from the Gila Mountains (southwestern Arizona) and the Morenci Mine (Rocky Mountain bighorn) in an attempt to identify the source of putative immigrants and, more importantly, to serve as comparisons for genetic diversity metrics. Results We did not find evidence of substantial gene flow into the Silver Bell Mountains population. We did not detect any new mitochondrial haplotypes in the 2015 bighorn sheep samples. The microsatellite analyses detected only one new allele, in one individual from the 2015 population that was not detected in the 2003 samples. Overall, the genetic diversity of the Silver Bell Mountains population was lower than that seen in either the Gila population or the Morenci Mine population. Discussion Even though the results of this study did not help elucidate the precise reason for the recent population expansion, continued monitoring and genetic sampling could provide more clarity on the genetic demographics of this population.

CHARACTERIZATION OF AN ANAPLASMA OVIS ISOLATE FROM DESERT BIGHORN SHEEP IN SOUTHERN CALIFORNIA

1993 ◽  
Vol 29 (4) ◽  
pp. 540-546 ◽  
Author(s):  
Will Goff ◽  
David Stiller ◽  
David Jessup ◽  
Peter Msolla ◽  
Walter Boyce ◽  
...  
Keyword(s):  
Southern California ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep ◽  
Anaplasma Ovis

scholarly journals Diel Activity of Female Desert Bighorn Sheep in Western Arizona

1989 ◽  
Vol 53 (1) ◽  
pp. 264 ◽  
Author(s):  
Jay A. Alderman ◽  
Paul R. Krausman ◽  
Bruce D. Leopold
Keyword(s):  
Bighorn Sheep ◽  
Diel Activity ◽  
Desert Bighorn Sheep

scholarly journals Desert Bighorn Sheep: Changes in Genetic Variation Over Time and the Impact of Merging Populations

2014 ◽  
Vol 5 (1) ◽  
pp. 3-13 ◽  
Author(s):  
Philip W. Hedrick ◽  
John D. Wehausen
Keyword(s):  
Genetic Variation ◽  
New Mexico ◽  
Monitoring And Evaluation ◽  
Bighorn Sheep ◽  
Ovis Canadensis ◽  
Mexican Population ◽  
Desert Bighorn Sheep ◽  
Two Generations ◽  
The Impact ◽  
Over Time

Abstract Founder effects, genetic bottlenecks, and genetic drift in general can lead to low levels of genetic diversity, which can influence the persistence of populations. We examine genetic variation in two populations of desert bighorn sheep Ovis canadensis from New Mexico and Mexico to measure change over time and evaluate the impact of introducing individuals from one population into the other. Over about three generations, the amount of genetic variation in the New Mexico population increased. In contrast, over about two generations the amount of genetic variation in the Mexican population decreased by a great extent compared with an estimate from another Mexican population from which it is primarily descended. The potential reasons for these changes are discussed. In addition, although both populations have low genetic variation, introduction of Mexican rams into the New Mexico population might increase the amount of genetic variation in the New Mexico population. Overall, it appears that management to increase genetic variation might require substantial detailed monitoring and evaluation of ancestry from the different sources and fitness components.

Cloning of Exotic/Endangered Species: Desert Bighorn Sheep

2006 ◽  
pp. 169-181 ◽  
Author(s):  
James “Buck” Williams ◽  
Taeyoung Shin ◽  
Ling Liu ◽  
Gabriela Flores-Foxworth ◽  
Juan Romano ◽  
...  
Keyword(s):  
Endangered Species ◽  
Bighorn Sheep ◽  
Desert Bighorn Sheep

scholarly journals Genetic and Environmental Indicators of Climate Change Vulnerability for Desert Bighorn Sheep

2020 ◽  
Vol 8 ◽  
Author(s):  
Tyler G. Creech ◽  
Clinton W. Epps ◽  
John D. Wehausen ◽  
Rachel S. Crowhurst ◽  
Jef R. Jaeger ◽  
...  
Keyword(s):  
Climate Change ◽  
Bighorn Sheep ◽  
Environmental Indicators ◽  
Desert Bighorn Sheep ◽  
Climate Change Vulnerability
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