A species-specific multigene family mediates differential sperm displacement in Drosophila melanogaster

被引：10

作者：

Jayaswal, Vivek ^{[1
]}

Jimenez, Jamie ^{[2
]}

Magie, Robert ^{[2
]}

Nguyen, Kien ^{[2
]}

Clifton, Bryan ^{[2
]}

Yeh, Shudan ^{[3
]}

Ranz, Jose M. ^{[2
]}

机构：

[1] Univ Sydney, Sch Math & Stat, Sydney, NSW, Australia

[2] Univ Calif Irvine, Dept Ecol & Evolutionary Biol, Irvine, CA 92697 USA

[3] Natl Cent Univ, Dept Life Sci, Taoyuan, Taiwan

来源：

EVOLUTION | 2018年 / 72卷 / 02期

基金：

美国国家科学基金会;

关键词：

Drosophila; Sdic; sexual selection; sperm competition; species-specific gene; sperm displacement; COMPETITION; GENE;

D O I：

10.1111/evo.13417

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Sperm competition is a postcopulatory sexual selection mechanism in species in which females mate with multiple males. Despite its evolutionary relevance in shaping male traits, the genetic mechanisms underlying sperm competition are poorly understood. A recently originated multigene family specific to Drosophila melanogaster, Sdic, is important for the outcome of sperm competition in doubly mated females, although the mechanistic nature of this phenotype remained unresolved. Here, we compared doubly mated females, second mated to either Sdic knockout or nonknockout males, and directly visualize sperm dynamics in the female reproductive tract. We found that a less effective removal of first-to-mate male's sperm within the female's sperm storage organs is consistent with a reduced sperm competitive ability of the Sdic knockout males. Our results highlight the role young genes can play in driving the evolution of sperm competition.

引用

页码：399 / 403

页数：5

共 20 条

[1] CONTROLLING THE FALSE DISCOVERY RATE - A PRACTICAL AND POWERFUL APPROACH TO MULTIPLE TESTING [J].