Assessing the cryptic invasion of a domestic conspecific: American mink in their native range.
Assessing the cryptic invasion of a domestic conspecific: American mink in their native range.
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DOI：
10.1002/ece3.630
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发表时间：
2013-07
影响因子：
2.6
通讯作者：
Schulte-Hostedde, Albrecht I.
中科院分区：
文献类型：
--
作者：
Beauclerc, Kaela B.;Bowman, Jeff;Schulte-Hostedde, Albrecht I.
入侵的早期发现有助于对其进行控制，但当由于入侵物种与本地物种相似而使入侵具有隐蔽性时，这可能会很困难。驯化的同种个体提供了一个隐蔽入侵的有趣例子，因为它们有能力与本地同类杂交，从而可能促进不良适应基因的渗入。我们评估了逃逸的家养美洲水貂（Neovison vison）在其原生范围内的隐蔽入侵情况。野生水貂在世界许多地方是已知的外来入侵物种，但它们在原生范围内的入侵情况尚未得到很好的理解。我们对来自加拿大安大略省不同养殖场的233只圈养家养水貂和299只来自安大略省的野生水貂进行了基因分析，并使用归类测试来确定野生水貂的基因血统。我们发现18%的野生水貂要么是逃逸的家养动物，要么是杂交种，并且树回归分析显示，这些家养基因型最有可能出现在北纬43.13°以南，即安大略省水貂养殖场的分布范围内。因此，在没有毛皮养殖场的安大略省地区，家养水貂似乎没有建立种群。我们推测家养水貂的不良适应以及杂交和基因渗入水貂的远交衰退限制了它们的扩散。水貂养殖场的密度以及与养殖场的接近程度并不是家养基因型的重要预测因素，相反，某些水貂养殖场似乎是逃逸家养动物的重要来源。我们的研究结果表明，就生物安全而言，并非所有水貂养殖场都是相同的，因此通过提高生物安全可以减轻家养基因型的扩散。
Control of invasions is facilitated by their early detection, but this may be difficult when invasions are cryptic due to similarity between invaders and native species. Domesticated conspecifics offer an interesting example of cryptic invasions because they have the ability to hybridize with their native counterparts, and can thus facilitate the introgression of maladaptive genes. We assessed the cryptic invasion of escaped domestic American mink (Neovison vison) within their native range. Feral mink are a known alien invader in many parts of the world, but invasion of their native range is not well understood. We genetically profiled 233 captive domestic mink from different farms in Ontario, Canada and 299 free-ranging mink from Ontario, and used assignments tests to ascertain genetic ancestries of free-ranging animals. We found that 18% of free-ranging mink were either escaped domestic animals or hybrids, and a tree regression showed that these domestic genotypes were most likely to occur south of a latitude of 43.13°N, within the distribution of mink farms in Ontario. Thus, domestic mink appear not to have established populations in Ontario in locations without fur farms. We suspect that maladaptation of domestic mink and outbreeding depression of hybrid and introgressed mink have limited their spread. Mink farm density and proximity to mink farms were not important predictors of domestic genotypes but rather, certain mink farms appeared to be important sources of escaped domestic animals. Our results show that not all mink farms are equal with respect to biosecurity, and thus that the spread of domestic genotypes can be mitigated by improved biosecurity.
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影响因子：
2.9
作者：
Iordan, F.;Rushton, S. P.;Bonesi, L.
通讯作者：
Bonesi, L.
影响因子：
1.9
作者：
Elfstrom, Marcus;Swenson, Jon E.;Ball, John P.
通讯作者：
Ball, John P.
DOI：
10.1073/pnas.0607324104
发表时间：
2007-03-06
影响因子：
11.1
作者：
Lavergne, Sebastien;Molofsky, Jane
通讯作者：
Molofsky, Jane
影响因子：
5.9
作者：
Hammershoj, Mette;Travis, Justin M. J.;Stephenson, Catriona M.
通讯作者：
Stephenson, Catriona M.
影响因子：
4.9
作者：
Broders, HG;Mahoney, SP;Davidson, WS
通讯作者：
Davidson, WS