Multigene molecular systematics confirm species status of morphologically convergent Pagurus hermit crabs.
Multigene molecular systematics confirm species status of morphologically convergent Pagurus hermit crabs.
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DOI：
10.1371/journal.pone.0028233
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发表时间：
2011
期刊：
影响因子：
3.7
通讯作者：
Carvalho GR
中科院分区：
文献类型：
--
作者：
Matzen da Silva J;Dos Santos A;Cunha MR;Costa FO;Creer S;Carvalho GR
尽管当代形态分类学评价，明显的高形态相似性提出了某些寄居蟹的物种地位的不确定性。这是两个欧洲物种之间的例子，Pagurus挖穴（Herbst，1791）和Pagurus alatus（Fabricius 1775），其物种地位仍然很难单独使用形态标准来解决。为了解决这种模糊性，我们使用最大似然（ML）和贝叶斯推断（BI）方法的组合来描绘物种边界的P. alatus和P. excavatus和制定一个中间的Pagurus系统发育假说，基于单个和串联的线粒体（细胞色素氧化酶I [COI]）和核（16S和28S核糖体RNA）基因分区。分子数据支持P. incubulatus和P. alatus的物种地位，也清楚地解决了来自东北大西洋和地中海的寄居蟹内的两个分歧分支。尽管寄居蟹，寄居蟹，在东北大西洋和地中海生态系统中的丰富和突出的生态作用，其分类学，生物学，系统学和进化的许多重要方面仍然很少探索。这里提出的拓扑结构应被视为假设，可以纳入到强大的和综合的理解内和栖息在东北大西洋和地中海的属Pagurus物种之间的系统关系。
In spite of contemporary morphological taxonomy appraisals, apparent high morphological similarity raises uncertainty about the species status of certain Pagurus hermit crabs. This is exemplified between two European species, Pagurus excavatus (Herbst, 1791) and Pagurus alatus (Fabricius 1775), whose species status is still difficult to resolve using morphological criteria alone. To address such ambiguities, we used combinations of Maximum Likelihood (ML) and Bayesian Inference (BI) methods to delineate species boundaries of P. alatus and P. excavatus and formulate an intermediate Pagurus phylogenetic hypothesis, based upon single and concatenated mitochondrial (cytochrome oxidase I [COI]) and nuclear (16S and 28s ribosomal RNA) gene partitions. The molecular data supported the species status of P. excavatus and P. alatus and also clearly resolved two divergent clades within hermit crabs from the Northeast Atlantic Ocean and the Mediterranean Sea. Despite the abundance and prominent ecological role of hermit crabs, Pagurus, in North East Atlantic Ocean and Mediterranean Sea ecosystems, many important aspects of their taxonomy, biology, systematics and evolution remain poorly explored. The topologies presented here should be regarded as hypotheses that can be incorporated into the robust and integrated understanding of the systematic relationships within and between species of the genus Pagurus inhabiting the Northeast Atlantic Ocean and the Mediterranean Sea.
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影响因子：
64.8
作者：
CUNNINGHAM, CW;BLACKSTONE, NW;BUSS, LW
通讯作者：
BUSS, LW
影响因子：
2.5
作者：
ELWOOD, RW;STEWART, A
通讯作者：
STEWART, A
影响因子：
3.7
作者：
Matzen da Silva J;Dos Santos A;Cunha MR;Costa FO;Creer S;Carvalho GR
通讯作者：
Carvalho GR
影响因子：
2.8
作者：
Ellis, JR;Rogers, SI;Freeman, SM
通讯作者：
Freeman, SM
影响因子：
0.8
作者：
Cuesta, JA;Schubart, CD
通讯作者：
Schubart, CD