Ortego Joaquín, Aparicio José Miguel, Calabuig Gustau, Cordero Pedro J
Grupo de Investigación de la Biodiversidad Genética y Cultural, Instituto de Investigación en Recursos Cinegéticos-IREC (CSIC-UCLM-JCCM), Ronda de Toledo s/n, 13005 Ciudad Real, Spain.
Biol Lett. 2007 Oct 22;3(5):585-8. doi: 10.1098/rsbl.2007.0268.
The lesser kestrel (Falco naumanni) suffered a sharp population decline over much of its European distribution range in the middle of the twentieth century. Still declining in some areas, the species has recently experienced a notable population recovery in certain regions. We examined the genetic diversity variation in a growing population of lesser kestrels from Central Spain over a 6-year period (2000-2005). The population studied showed a rapid demographic expansion, increasing in the number of both breeding pairs and colonies. Annual average heterozygosity and allelic diversity increased and genetic similarity between potential mates decreased over the study period. Several immigrants regularly arrived in the study area and introduced new alleles into the local population, pointing to immigration as the main cause contributing to the observed genetic recovery.
在20世纪中叶，小黄脚隼（Falco naumanni）在其欧洲大部分分布范围内种群数量急剧下降。该物种在一些地区仍在减少，但最近在某些区域经历了显著的种群数量回升。我们研究了西班牙中部一个数量不断增长的小黄脚隼种群在6年期间（2000 - 2005年）的遗传多样性变化。所研究的种群呈现出快速的种群扩张，繁殖对和繁殖群体数量均有所增加。在研究期间，年平均杂合度和等位基因多样性增加，潜在配偶之间的遗传相似性降低。有几只外来个体定期抵达研究区域，并将新的等位基因引入当地种群，这表明外来个体迁入是观察到的遗传恢复的主要原因。
