Heterozygosity–behavior and heterozygosity–fitness correlations in a salamander with limited dispersal
Heterozygosity–behavior and heterozygosity–fitness correlations in a salamander with limited dispersal
复制标题
有限扩散蝾螈的杂合性-行为和杂合性-适应度相关性
作者：
E. Liebgold;C. F. Kramer;Tamar C. Roomian;Gina M. Dolezar;P. Cabe
近亲繁殖和遗传漂变会降低遗传杂合性，而这种低杂合性又会降低适合度，导致杂合性-适合度相关（HFCs）。氢氟碳化合物的数量级通常很小，这一结果通常归因于分析的功效。动物的行为通常会影响健康，并且在某种程度上通常是可遗传的。我们假设杂合性影响行为，而行为反过来又潜在地影响适应性。具体而言，在红背蝾螈，灰腹蛇，这有有限的传播和近亲繁殖的潜力，我们测试是否杂合性，估计从6个微卫星位点，影响家庭范围的大小，少年的生长和生存。我们发现，具有较高杂合性的蝾螈有较大的家域和生长速度更快，这是繁殖成功的指标。然而，我们没有发现杂合性对生存的影响。我们的结论是，因为在P. cinereus的活动是紧密联系在一起的食物摄取和质量增益，杂合性影响的觅食行为的影响生长。未来的研究应该调查杂合性，行为和健身之间的关系可能会受到影响或介导的内分泌或免疫系统。
Inbreeding and genetic drift can decrease genetic heterozygosity, and this low heterozygosity can depress fitness, resulting in heterozygosity–fitness correlations (HFCs). HFCs are typically small in magnitude, a result often attributed to power of the analyses. Animal behaviors often affect fitness and are often heritable to some degree. We hypothesized that heterozygosity influences behavior, which, in turn, potentially influences fitness. Specifically, in red-backed salamanders, Plethodon cinereus, which have limited dispersal and the potential for inbreeding, we tested whether heterozygosity, as estimated from six microsatellite loci, affected home range size, juvenile growth, and survival. We found that salamanders with higher heterozygosity had larger home ranges and grew faster, which is indicative of reproductive success. However, we found no effects of heterozygosity on survival. We conclude that, because activity in P. cinereus is tightly linked to food uptake and mass gain, heterozygosity influences growth via effects on foraging behavior. Future research should investigate how the relationship between heterozygosity, behavior, and fitness may be affected or mediated by endocrine or immune systems.
DOI：
10.1073/pnas.060284797
发表时间：
2000-03-28
影响因子：
11.1
作者：
Meagher, S;Penn, DJ;Potts, WK
通讯作者：
Potts, WK