UNIDIRECTIONAL SPREAD OF SECONDARY SEXUAL PLUMAGE TRAITS ACROSS AN AVIAN HYBRID ZONE

被引：126

作者：

PARSONS, TJ

OLSON, SL

BRAUN, MJ

机构：

[1] NATL MUSEUM NAT HIST,MOLEC SYSTEMAT LAB,WASHINGTON,DC 20560

[2] NATL MUSEUM NAT HIST,DEPT VERTEBRATE ZOOL,WASHINGTON,DC 20560

来源：

SCIENCE | 1993年 / 260卷 / 5114期

关键词：

D O I：

10.1126/science.260.5114.1643

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Theory predicts that traits under positive selection can rapidly cross a hybrid zone in spite of a substantial barrier to neutral gene flow between hybridizing taxa. An avian hybrid zone between Manacus candei (white-collared manakin) and M. vitellinus (golden-collared manakin) is reported here that displays an unusual pattern of noncoincident clines. Male secondary sexual traits of M. vitellinus have spread into populations that are genetically and morphometrically like M. candei. These birds have a lek breeding system in which male mating success is highly skewed, suggesting that sexual selection is driving male sexual traits across the zone.

引用

页码：1643 / 1646

页数：4

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