globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0097473
论文题名:
Discriminating between the Effects of Founding Events and Reproductive Mode on the Genetic Structure of Triops Populations (Branchiopoda: Notostraca)
作者: Rebekah L. Horn; Ralph Kuehn; Victoria Drechsel; David E. Cowley
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-5-13
卷: 9, 期:5
语种: 英语
英文关键词: Population genetics ; Haplotypes ; Inbreeding ; Ponds ; New Mexico ; Heterozygosity ; Lakes ; Mitochondria
英文摘要: Crustaceans that initially colonize a freshwater temporary pond can strongly bias the subsequent genetic composition of the population, causing nearby populations to be genetically distinct. In addition, these crustaceans have various reproductive modes that can influence genetic differentiation and diversity within and between populations. We report on two species of tadpole shrimp, Triops newberryi and Triops longicaudatus “short”, with different reproductive modes. Reproduction in the tadpole shrimp can occur clonally (parthenogenesis), with self fertilization (hermaphroditism), or through outcrossing of hermaphrodites with males (androdioecy). For all these reproductive modes, population genetic theory predicts decreased genetic diversity and increased population differentiation. Here we use mitochondrial control region (mtCR) sequences and nuclear microsatellite loci to determine if the difference in reproductive mode affects the high genetic structure typical of persistent founder effects. Previous authors indicated that T. newberryi is androdioecious because populations are composed of hermaphrodites and males, and T. longicaudatus “short” is hermaphroditic or parthenogenetic because males are absent. In our data, T. newberryi and T. longicaudatus “short” populations were highly structured genetically over short geographic distances for mtCR sequences and microsatellite loci (T. newberryi: ΦST = 0.644, FST = 0.252, respectively; T. l. “short”: invariant mtCR sequences, FST = 0.600). Differences between the two Triops species in a number of diversity measures were generally consistent with expectations from population genetic theory regarding reproductive mode; however, three of four comparisons were not statistically significant. We conclude the high genetic differentiation between populations is likely due to founder effects and results suggest both species are composed of selfing hermaphrodites with some level of outcrossing; the presence of males in T. newberryi does not appreciably reduce inbreeding. We cannot exclude the possibility that males in T. newberryi are non-reproductive individuals and the two species have the same mating system.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0097473&type=printable
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/18380
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

Files in This Item:
File Name/ File Size Content Type Version Access License
journal.pone.0097473.PDF(531KB)期刊论文作者接受稿开放获取View Download

作者单位: Department of Fish, Wildlife & Conservation Ecology and Molecular Biology Program, New Mexico State University, Las Cruces, New Mexico, United States of America;Department of Fish, Wildlife & Conservation Ecology and Molecular Biology Program, New Mexico State University, Las Cruces, New Mexico, United States of America;Unit of Molecular Zoology, Chair of Zoology, Department of Animal Science, Technische Universität München, Freising, Germany;Unit of Molecular Zoology, Chair of Zoology, Department of Animal Science, Technische Universität München, Freising, Germany;Department of Fish, Wildlife & Conservation Ecology and Molecular Biology Program, New Mexico State University, Las Cruces, New Mexico, United States of America

Recommended Citation:
Rebekah L. Horn,Ralph Kuehn,Victoria Drechsel,et al. Discriminating between the Effects of Founding Events and Reproductive Mode on the Genetic Structure of Triops Populations (Branchiopoda: Notostraca)[J]. PLOS ONE,2014-01-01,9(5)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Rebekah L. Horn]'s Articles
[Ralph Kuehn]'s Articles
[Victoria Drechsel]'s Articles
百度学术
Similar articles in Baidu Scholar
[Rebekah L. Horn]'s Articles
[Ralph Kuehn]'s Articles
[Victoria Drechsel]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Rebekah L. Horn]‘s Articles
[Ralph Kuehn]‘s Articles
[Victoria Drechsel]‘s Articles
Related Copyright Policies
Null
收藏/分享
文件名: journal.pone.0097473.PDF
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.