Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/j.1365-2427.2011.02666.x |
High gene flow and metapopulation dynamics detected for three species in a dryland river system | |
Huey, Joel A.1,2; Schmidt, Daniel J.1,2; Balcombe, Stephen R.1,2; Marshall, Jonathan C.3; Hughes, Jane M.1,2 | |
通讯作者 | Huey, Joel A. |
来源期刊 | FRESHWATER BIOLOGY
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ISSN | 0046-5070 |
出版年 | 2011 |
卷号 | 56期号:11页码:2378-2390 |
英文摘要 | 1. The highly variable hydrology of dryland rivers has important implications for population dynamics in these systems. In western Queensland, fluctuations in sub-population size are likely to lead to local bottlenecks and extinctions, increasing the need for connectivity and gene flow to maintain population viability. 2. Using microsatellite markers, we explored evidence for this metapopulation structure in two species of freshwater fish (Maquaria ambigua and Tandanus tandanus) and one crustacean (Macrobrachium australiense) in a sub-catchment of the upper Murray-Darling Basin, Australia. 3. Overall, we found very weak genetic structure for all three species. Two species (M. ambigua and M. australiense) showed some significant genetic structure that did not correlate with geographic distance. However, decomposed pairwise regression analysis revealed evidence for intense genetic drift at the waterhole scale, suggesting that local bottlenecks are driving what little genetic structure does exist for these species. 4. The results identify the local impact of bottlenecks on genetic diversity, but highlight the importance of gene flow in maintaining population viability in these highly variable systems. As the impacts of bottlenecks are likely to be tempered by gene flow, it is suggested that the maintenance of connectivity is of paramount importance in this dryland system. |
英文关键词 | decomposed pairwise regression analysis dryland river gene flow metapopulation microsatellites |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000296061400014 |
WOS关键词 | FRESH-WATER FISH ; POPULATION-STRUCTURE ; WESTERN QUEENSLAND ; ARID-ZONE ; EMPIRICAL-EVALUATION ; ASSEMBLAGE STRUCTURE ; MICROSATELLITE LOCI ; NEOSILURUS-HYRTLII ; AUSTRALIA ; PATTERNS |
WOS类目 | Ecology ; Marine & Freshwater Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/168153 |
作者单位 | 1.Griffith Univ, EWater Cooperat Res Ctr, Brisbane, Qld 4111, Australia; 2.Griffith Univ, Australian Rivers Inst, Brisbane, Qld 4111, Australia; 3.Queensland Dept Environm & Resource Management, Brisbane, Qld, Australia |
推荐引用方式 GB/T 7714 | Huey, Joel A.,Schmidt, Daniel J.,Balcombe, Stephen R.,et al. High gene flow and metapopulation dynamics detected for three species in a dryland river system[J],2011,56(11):2378-2390. |
APA | Huey, Joel A.,Schmidt, Daniel J.,Balcombe, Stephen R.,Marshall, Jonathan C.,&Hughes, Jane M..(2011).High gene flow and metapopulation dynamics detected for three species in a dryland river system.FRESHWATER BIOLOGY,56(11),2378-2390. |
MLA | Huey, Joel A.,et al."High gene flow and metapopulation dynamics detected for three species in a dryland river system".FRESHWATER BIOLOGY 56.11(2011):2378-2390. |
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