Palo J U, Lesbarrères D, Schmeller D S, Primmer C R, Merilä J
Ecological Genetics Research Unit, Department of Biological and Environmental Sciences, PO Box 65, FIN-00014 University of Helsinki, Finland.
Mol Ecol. 2004 Sep;13(9):2865-9. doi: 10.1111/j.1365-294X.2004.02286.x.
Despite being important models in ecological, evolutionary and conservation biology research, very little is known about the dispersal in anuran amphibians, and juvenile dispersal in particular. Using microsatellite data, we assessed signatures of sex-biased migration in the common frog (Rana temporaria) in Scandinavia. Significant heterozygosity deficiency (FIS) and lower assignment value (mAIc) among females suggest that dispersal in R. temporaria is female biased. Also variance of assignment (vAIc), estimated separately for the two sexes, was consistent with this inference, although the difference was not statistically significant. Possible proximate and ultimate explanations for female-biased dispersal in amphibians are discussed.
尽管蛙类两栖动物是生态、进化和保护生物学研究中的重要模式生物，但我们对其扩散情况，尤其是幼体扩散的了解却非常少。利用微卫星数据，我们评估了斯堪的纳维亚普通青蛙（欧洲林蛙）中性别偏向性迁移的特征。雌性个体中显著的杂合子缺失（FIS）和较低的归巢值（mAIc）表明，欧洲林蛙的扩散存在雌性偏向。此外，分别针对两性估算的归巢方差（vAIc）也与这一推断一致，尽管差异不具有统计学显著性。本文还讨论了两栖动物中雌性偏向性扩散可能的直接和最终解释。
