Microsatellite data for Bull Trout

Freshwater ecosystems are negatively impacted by a variety of anthropogenic stressors, with concomitant elevated rates of population decline for freshwater aquatic vertebrates. Because reductions in population size and extent can negatively impact genetic diversity and gene flow, which are vital for sustained local adaptation, it is important to measure these characteristics in threatened species that may yet be rescued from extinction. Across its native range, Bull Trout (Salvelinus confluentus) extent and abundance are in decline due to historic overharvest, invasive nonnative species, and habitat loss. In Alberta’s Eastern Slope region, populations at the range margin have progressively been lost, motivating us to better understand the amount and distribution of genetic variation in headwater habitats and some downstream sites where they continue to persist. Across this region, we sampled 431 Bull Trout from 20 sites in the Athabasca and Saskatchewan River basins and assayed 10 micro...

淡水生态系统受到多种人为胁迫因子的负面影响，与此同时，淡水水生脊椎动物的种群下降速率也随之升高。由于种群规模和分布范围的缩减会对遗传多样性及基因流产生负面影响——而这两者对于物种持续的局部适应至关重要——因此，对那些仍有可能从灭绝边缘被拯救的濒危物种而言，测量这些特征具有重要意义。在其原生分布区内，公牛鳟（Salvelinus confluentus）的分布范围和种群数量正由于历史上的过度捕捞、外来入侵物种及栖息地丧失而不断缩减。在阿尔伯塔省东坡地区，分布于范围边缘的种群已逐渐消失，这促使我们进一步了解源头栖息地及部分下游存续地点中遗传变异的数量与分布情况。在该区域内，我们从阿萨巴斯卡河与萨斯喀彻温河流域的20个采样点采集了431条公牛鳟，并对10个微...