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Effect of compensatory immigration on the genetic structure of coyotes

Journal Article · · Journal of Wildlife Management
DOI:https://doi.org/10.1002/jwmg.21320· OSTI ID:1813751
 [1];  [2];  [3]
  1. Univ. of Georgia, Athens, GA (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River Ecology Lab. (SREL); Savannah River Ecology Laboratory
  2. USDA Forest Service, New Ellenton, SC (United States)
  3. Univ. of Georgia, Athens, GA (United States); Savannah River Site (SRS), Aiken, SC (United States). Savannah River Ecology Lab. (SREL)
Despite efforts to reduce their impacts on livestock and native ungulates within the southeastern United States, coyotes (Canis latrans) are able to recover from control programs. It is unknown how coyotes compensate for high mortality following trapping, so there is great interest to identify methods that can provide insight into coyote response to intensive trapping. To investigate if population genetic tools can decipher how coyotes recover from intensive trapping, we combined an empirical test of how genetic differentiation, diversity, and familial structure changed following trapping on the Savannah River Site (SRS), South Carolina with spatially explicit genetic simulations.The empirical dataset found that pre- and post-trapping periods had similar genetic diversities and were not genetically differentiated as expected by either compensatory reproduction or immigration from a single genetic source. The post-trapping coyote populations exhibited weaker signatures of philopatry with little evidence for increased dispersal distances of young coyotes, which suggests immigration caused a decrease in familial structure. Our simulations indicated that spatial autocorrelation coefficients and observed heterozygosities change as immigration increases while population differentiation, allelic richness, and displacement distances do not. Collectively, our results suggest that coyotes recover from intensive trapping via both reproduction and immigration, which likely makes preventing compensation difficult. Furthermore, monitoring post-trapping populations may offer more insight into maximizing the effectiveness of control efforts, and based on our simulations, population genetics can provide critical information about the amount of compensatory immigration following trapping.
Research Organization:
Savannah River Site (SRS), Aiken, SC (United States). Savannah River Ecology Lab. (SREL)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AI09-00SR22188; FC09-07SR22506
OSTI ID:
1813751
Alternate ID(s):
OSTI ID: 1537582
OSTI ID: 1399793
Journal Information:
Journal of Wildlife Management, Journal Name: Journal of Wildlife Management Journal Issue: 8 Vol. 81; ISSN 0022-541X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Patch‐scale culls of an overabundant bird defeated by immediate recolonization journal March 2019
Genetic diversity and relatedness of a recently established population of eastern coyotes (Canis latrans) in New York City journal December 2019

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