Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa
	Xue, Dong-Xiu1,2 ; Zhang, Tao1,2 ; Liu, Jin-Xian 1,2
刊名	SCIENTIFIC REPORTS
	2016-03-21
卷号	6
英文摘要	Polyandry is a common mating strategy in animals, with potential for sexual selection to continue post-copulation through sperm competition and/or cryptic female choice. Few studies have investigated the influences of population density on polyandry and sperm usage, and paternity distribution in successive broods of marine invertebrates. The marine gastropod Rapana venosa is ideal for investigating how population density influences the frequency of polyandry and elucidating patterns of sperm usage. Two different population density (12 ind/m(3) and 36 ind/m(3)) treatments with two replications were set to observe reproductive behaviors. Five microsatellite markers were used to identify the frequency of multiple paternity and determine paternal contributions to progeny arrays in 120 egg masses. All of the mean mating frequency, mean number of sires and mean egg-laying frequency were higher at high population density treatment relative to low population density treatment, indicating population density is an important factor affecting polyandry. The last sperm donors achieved high proportions of paternity in 74.77% of egg masses, which supported the "last male sperm precedence" hypothesis. In addition, high variance in reproductive success among R. venosa males were detected, which might have an important influence on effective population size.
收录类别	SCI
语种	英语
WOS记录号	WOS:000372447200002
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/126217]
专题	海洋研究所_海洋生态与环境科学重点实验室
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, 7 Nanhai Rd, Qingdao 266071, Shandong, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Xue, Dong-Xiu,Zhang, Tao,Liu, Jin-Xian. Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa[J]. SCIENTIFIC REPORTS,2016,6.
APA	Xue, Dong-Xiu,Zhang, Tao,&Liu, Jin-Xian.(2016).Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa.SCIENTIFIC REPORTS,6.
MLA	Xue, Dong-Xiu,et al."Influences of population density on polyandry and patterns of sperm usage in the marine gastropod Rapana venosa".SCIENTIFIC REPORTS 6(2016).