On the validity of habitat as a predictor of genetic structure in aquatic systems: a comparative study using California water beetles
On the validity of habitat as a predictor of genetic structure in aquatic systems: a comparative study using California water beetles
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关于栖息地作为水生系统遗传结构预测因子的有效性：使用加州水甲虫的比较研究
DOI：
10.1111/j.1365-294x.2008.04039.x
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发表时间：
2009
影响因子：
4.9
通讯作者：
M. Caterino
中科院分区：
文献类型：
--
作者：
Andrew E. Z. Short;M. Caterino
在淡水生物中，水流通常被认为是影响生活史特征（例如分散能力和遗传结构）的最重要的环境变量之一。最近的研究表明，仅由水流定义的栖息地类型可以预测遗传种群的分化，而其他研究则主张反对广泛的概括，而支持更保守的、针对特定物种的结论。如果水生栖息地类型可以预测种群分化，那么人们就会期望占据相同水生栖息地的同域类群趋于相似的遗传结构。我们通过检查南加州三种水甲虫物种（Anacaenasignaticollis、Eubrianax edwardsii 和 Stictotarsus striatellus）的单倍型多样性、系统地理学一致性、种群连通性和种群隔离性来检验这一预测。除了粗略的栖息地和地理之外，我们还控制了范围大小、扩散方法和进化枝独立性等潜在的混杂因素。总之，在所有检查的测量中，该物种跨越了遗传和系统地理学结构的极端，这表明水生栖息地类型的粗略二分法并不能预测遗传结构。毫无疑问，水流在塑造淡水生物的生活史特征方面发挥着重要作用，但为人为简单化的二分法赋予预测特性或将其用作其他未测量变量的替代品是危险的。
Among freshwater organisms, water flow is frequently considered to be one of the most important environmental variables affecting life‐history traits such as dispersal abilities and therefore genetic structure. Recent studies have suggested that habitat type alone as defined by water flow is predictive of genetic population differentiation, while others have advocated against broad generalizations in favour of more conservative, species‐specific conclusions. If aquatic habitat type is predictive of population differentiation, then one would expect sympatric taxa that occupy the same aquatic habitat to converge on a similar genetic structure. We tested this prediction by examining the haplotype diversity, phylogeographical concordance, population connectivity and population isolation of three lotic water beetle species in southern California: Anacaena signaticollis, Eubrianax edwardsii and Stictotarsus striatellus. In addition to coarse habitat and geography, we also controlled for the potentially confounding factors of range size, method of dispersal and clade independence. Together, the species spanned extremes of genetic and phylogeographical structure in all measures examined, suggesting that a coarse dichotomy of aquatic habitat type is not predictive of genetic structure. While there is little question that water flow plays a major role in shaping the life‐history traits of freshwater organisms, it is perilous to confer predictive properties to an artificially simplistic dichotomy or use it as a surrogate for other unmeasured variables.
影响因子：
3.3
作者：
L. Excoffier;P. Smouse;J. Quattro
通讯作者：
L. Excoffier;P. Smouse;J. Quattro
通过 Fenton 体系中 PA-Fe2 的预络合高度增强植酸脱磷酸：高活性、宽 pH 范围和基于 Ferryl 的机制
影响因子：
15.1
作者：
Qian，Yiguang;Pan，Weijie;Yao，Jun
通讯作者：
Yao，Jun