Molecular phylogenetics and evolutionary history of ariid catfishes revisited: a comprehensive sampling.
Molecular phylogenetics and evolutionary history of ariid catfishes revisited: a comprehensive sampling.
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DOI：
10.1186/1471-2148-9-175
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发表时间：
2009-07-23
影响因子：
3.4
通讯作者：
Betancur-R R
中科院分区：
文献类型：
--
作者：
Betancur-R R
海鲶或海鲶是两种主要生活在海洋和咸淡水中的海鲶科（在四目约67科中）之一（尽管有些物种只生活在淡水中）。该组包括约29属和2个亚科（Galeichthyinae和Ariinae） 150多种。尽管它们分布在全球，但由于它们特殊的繁殖行为（即口腔孵化），它们在很大程度上仅限于大陆架。因此，在海洋鱼类中，干旱鱼类为推断历史生物地理情景提供了极好的机会。现有的系统发育假说主要集中在有限的地理区域，目前还缺乏全面的系统发育假说。本研究利用线粒体和细胞核序列（最长可达4 kb）对来自不同生物地理省的28属123个干旱区种进行了系统发育推测。虽然获得的拓扑结构支持基础群的单系性，但在先前的形态学研究中验证的多达10个属与分子拓扑结构不一致。新大陆的亚种被发现为副亚种，旧大陆的亚种被归类为一个有良好支持的分支，该分支进一步被划分为主要局限于冈瓦纳大陆的亚分支。由亚纲和其他三种鱼类类群的区域梯形图衍生出的总体区域梯形图与冈瓦纳的地质区域梯形图基本一致。尽管如此，分子钟估计在动物多样化的时间上提供了不同的结果（~105-41万年）。这项研究提供了迄今为止最全面的海鲶系统发育，并强调了重新评估其分类的必要性。虽然从拓扑学的角度来看，亚种的进化史与冈瓦纳碎片化过程中与事件序列相关的替代方差基本一致，但模糊的发散时间估计阻碍了在时间框架上评估替代方差假设。对干旱化石的进一步研究可能为更准确地推断干旱动物多样化的时间提供基础。
Ariids or sea catfishes are one of the two otophysan fish families (out of about 67 families in four orders) that inhabit mainly marine and brackish waters (although some species occur strictly in fresh waters). The group includes over 150 species placed in ~29 genera and two subfamilies (Galeichthyinae and Ariinae). Despite their global distribution, ariids are largely restricted to the continental shelves due in part to their specialized reproductive behavior (i.e., oral incubation). Thus, among marine fishes, ariids offer an excellent opportunity for inferring historical biogeographic scenarios. Phylogenetic hypotheses available for ariids have focused on restricted geographic areas and comprehensive phylogenies are still missing. This study inferred phylogenetic hypotheses for 123 ariid species in 28 genera from different biogeographic provinces using both mitochondrial and nuclear sequences (up to ~4 kb). While the topologies obtained support the monophyly of basal groups, up to ten genera validated in previous morphological studies were incongruent with the molecular topologies. New World ariines were recovered as paraphyletic and Old World ariines were grouped into a well-supported clade that was further divided into subclades mainly restricted to major Gondwanan landmasses. A general area cladogram derived from the area cladograms of ariines and three other fish groups was largely congruent with the geological area cladogram of Gondwana. Nonetheless, molecular clock estimations provided variable results on the timing of ariine diversification (~105-41 mya). This study provides the most comprehensive phylogeny of sea catfishes to date and highlights the need for re-assessment of their classification. While from a topological standpoint the evolutionary history of ariines is mostly congruent with vicariance associated with the sequence of events during Gondwanan fragmentation, ambiguous divergence time estimations hinders assessing the vicariant hypothesis on a temporal framework. Further examination of ariid fossils might provide the basis for more accurate inferences on the timing of ariine diversification.
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影响因子：
2.6
作者：
Betancur-R, Ricardo;Marceniuk, Alexandre P.;Bearez, Philippe
通讯作者：
Bearez, Philippe
影响因子：
9.8
作者：
Drummond AJ;Ho SY;Phillips MJ;Rambaut A
通讯作者：
Rambaut A
影响因子：
4.9
作者：
Bermingham, E;Martin, AP
通讯作者：
Martin, AP
DOI：
10.1073/pnas.0607004104
发表时间：
2007-04-03
影响因子：
11.1
作者：
Edwards, Scott V.;Liu, Liang;Pearl, Dennis K.
通讯作者：
Pearl, Dennis K.
影响因子：
4
作者：
Bell, R
通讯作者：
Bell, R