2017
DOI: 10.1002/jwmg.21381
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Ecotypic variation in population dynamics of reintroduced bighorn sheep

Abstract: Selection of bighorn sheep (Ovis canadensis) for translocation historically has been motivated by preservation of subspecific purity rather than by adaptation of source stocks to similar environments. Our objective was to estimate cause-specific, annual, and age-specific mortality of introduced bighorn sheep that originated at low elevations in southern British Columbia, Canada (BC ecotype), or in the Missouri River Breaks region of central Montana, USA (MT ecotype). In North Dakota, USA, mortality was similar… Show more

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Cited by 18 publications
(23 citation statements)
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“…To evaluate evolution of newly founded populations and inform reintroduction planning, we compared herds thought to be reintroduced with their suspected founding source. Other studies suggested that bighorn sheep reintroduction efforts may be more successful when founders are sourced from either matching environmental conditions, due to greater recruitment when ecotypes are matched, or native populations, due to typically higher levels of genetic diversity (Bleich et al., 2018; Fitzsimmons et al., 1997; Singer et al., 2000). We evaluated eight populations that originated from reintroductions where a founding source was in our study.…”
Section: Discussionmentioning
confidence: 99%
“…To evaluate evolution of newly founded populations and inform reintroduction planning, we compared herds thought to be reintroduced with their suspected founding source. Other studies suggested that bighorn sheep reintroduction efforts may be more successful when founders are sourced from either matching environmental conditions, due to greater recruitment when ecotypes are matched, or native populations, due to typically higher levels of genetic diversity (Bleich et al., 2018; Fitzsimmons et al., 1997; Singer et al., 2000). We evaluated eight populations that originated from reintroductions where a founding source was in our study.…”
Section: Discussionmentioning
confidence: 99%
“…may reflect elevated production (Luo et al, 2018). On the other hand, Bibersteinia is an important pathogen that is associated with serious infection (Bleich, Sargeant, & Wiedmann, 2018;Parr, Smith, Jenks, & Thompson, 2018;Heinse, Hardesty, & Harris, 2016) and is implicated in the high incidence of diarrhea in Diet D at 52 days.…”
Section: Discussionmentioning
confidence: 99%
“…Previously, other subspecies were recognized (e.g., Peninsular bighorn sheep, O. c. cremnobates, and California bighorn sheep, O. c. californiana ) ( Cowan, 1940 ). Debate remains about whether those putative lineages reflect important independent evolutionary trajectories and important local adaptation ( Buchalski et al, 2016 ; Bleich, Sargeant & Wiedmann, 2018 ; Barbosa et al, in press ).…”
Section: Introductionmentioning
confidence: 99%