Morphological and microsatellite differentiation in Melospiza melodia (Aves) at a microgeographic scale

被引：34

作者：

Chan, Y ^{[1
]}

Arcese, P ^{[1
]}

机构：

[1] Univ British Columbia, Dept Forest Sci, Ctr Appl Conservat Res, Vancouver, BC V6T 1W5, Canada

来源：

JOURNAL OF EVOLUTIONARY BIOLOGY | 2003年 / 16卷 / 05期

关键词：

analysis of molecular variance; geographical variation; Melospiza melodia; microsatellites; population differentiation;

D O I：

10.1046/j.1420-9101.2003.00601.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Geographical variation in microsatellite allele frequencies and morphology were compared for five subspecies of Melospiza melodia (song sparrow; M. m. samuelis, M. m. maxillaris, M. m. pusillula, M. m. gouldii, and M. m. heermanni) in 14 populations in the San Francisco Bay region to (a) assess divergence based on these estimates and (b) test the hypothesis that drift is responsible for morphological and genetic divergence. Morphological differentiation between subspecies was high despite low differentiation at microsatellite loci, indicating high gene flow and large effective population sizes. Low concordance of morphological and genetic estimates of divergence suggests that selection or phenotypic plasticity in morphology has caused morphological differentiation among the subspecies.

引用

页码：939 / 947

页数：9