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Bighorn Sheep Genetic Structure in Wyoming Reflects Geography and Management
Journal of Wildlife Management ( IF 2.3 ) Pub Date : 2020-05-29 , DOI: 10.1002/jwmg.21882
Sierra M. Love Stowell 1 , Roderick B. Gagne 1 , Doug McWhirter 2 , William Edwards 3 , Holly B. Ernest 1
Affiliation  

Aligning wildlife management boundaries with accurate biological units promotes effective conservation and management practices that reflect ecological and evolutionary processes. Neutral genetic markers allow for quantitative delineation of population structure without a priori assumptions or biases. In the United States, bighorn sheep (Ovis canadensis) are a charismatic component of Wyoming's biodiversity and a species that provides important viewing and hunting opportunities. Bighorn sheep abundances are relatively stable throughout Wyoming, and the species is managed by administrative units identified using expert knowledge, distribution and movement data, and geographic and administrative boundaries. We used a panel of 38 variable microsatellite loci and 512 base pairs of mitochondrial DNA sequence to identify the genetic structure throughout the state and in translocation source herds, quantify the extent of genetic diversity within each genetic cluster, and estimate the degree of gene flow among herds using blood and tissue samples collected 1989–2017. We identified genetic structure of Rocky Mountain bighorn sheep in the major mountain ranges of Wyoming, with strong support for ≥5 genetic clusters using microsatellite loci. These genetic clusters generally aligned with current management units, whereas mitochondrial data showed a more complex mosaic that was not geographically patterned. Genetic variation estimated from both markers was high within each herd and comparable among herds. The assignment of individuals reflected a combination of geographic isolation and translocation, which has been extensive. Our results provide a state‐wide assessment of genetic diversity and structure that will enhance management by understanding the outcomes of translocation, identifying the source of unknown individuals, and parameterizing disease ecology models. © 2020 The Wildlife Society.

中文翻译:

怀俄明州大角羊的遗传结构反映了地理和管理

使野生动植物的管理范围与准确的生物单位保持一致,可促进反映生态和进化过程的有效保护和管理做法。中性遗传标记可以定量描述种群结构,而无需先验假设或偏见。在美国,大角羊(Ovis canadensis)是怀俄明州生物多样性的极具魅力的组成部分,并且是一种提供重要观赏和狩猎机会的物种。在怀俄明州,大角羊的丰度相对稳定,该物种由使用专家知识,分布和迁徙数据以及地理和行政边界确定的行政单位管理。我们使用一组38个可变微卫星基因座和512个碱基对的线粒体DNA序列来鉴定整个州和易位源畜群的遗传结构,量化每个遗传簇内的遗传多样性程度,并估计其中的基因流动程度使用1989-2017年收集的血液和组织样本采集牛群。我们确定了怀俄明州主要山脉落基山大角羊的遗传结构,对使用微卫星基因座的≥5个遗传簇有强大的支持。这些基因簇通常与当前的管理单位保持一致,而线粒体数据显示出更复杂的镶嵌图,没有地理分布。从这两种标记物估计的遗传变异在每个猪群中都很高,并且在各猪群之间是可比的。个人的分配反映了地理隔离和易位的结合,这是广泛的。我们的结果对遗传多样性和结构进行了全州范围的评估,通过了解易位的结果,识别未知个体的来源以及对疾病生态模型进行参数化,可以加强管理。©2020野生动物协会。而线粒体数据显示了一个更复杂的马赛克,没有地理图案。从这两种标记物估算出的遗传变异在每个猪群中都很高,并且在各猪群之间具有可比性。个人的分配反映了广泛的地理隔离和易位的结合。我们的结果对遗传多样性和结构进行了全州范围的评估,通过了解易位的结果,识别未知个体的来源以及对疾病生态模型进行参数化,可以加强管理。©2020野生动物协会。线粒体数据显示的马赛克更复杂,没有地理图案。从这两种标记物估算出的遗传变异在每个猪群中都很高,并且在各猪群之间具有可比性。个人的分配反映了地理隔离和易位的结合,这是广泛的。我们的结果对遗传多样性和结构进行了全州范围的评估,通过了解易位的结果,识别未知个体的来源以及对疾病生态模型进行参数化,可以加强管理。©2020野生动物协会。个人的分配反映了地理隔离和易位的结合,这是广泛的。我们的结果对遗传多样性和结构进行了全州范围的评估,通过了解易位的结果,识别未知个体的来源以及对疾病生态模型进行参数化,可以加强管理。©2020野生动物协会。个人的分配反映了地理隔离和易位的结合,这是广泛的。我们的结果对遗传多样性和结构进行了全州范围的评估,通过了解易位的结果,识别未知个体的来源以及对疾病生态模型进行参数化,可以加强管理。©2020野生动物协会。
更新日期:2020-05-29
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