The little shrimp that could: phylogeography of the circumtropical Stenopus hispidus (Crustacea: Decapoda), reveals divergent Atlantic and Pacific lineages.
The little shrimp that could: phylogeography of the circumtropical Stenopus hispidus (Crustacea: Decapoda), reveals divergent Atlantic and Pacific lineages.
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作者：
Dudoit ';Iacchei M;Coleman RR;Gaither MR;Browne WE;Bowen BW;Toonen RJ
条纹珊瑚虾（学名：Stenopus hispidus，甲壳纲：十足目：狭足目）是一种受欢迎的海洋观赏物种，分布于环热带地区。浮游幼虫期持续120-253天，表明具有相当大的扩散潜力，但很少有研究在全球范围内调查海洋无脊椎动物的遗传联系。为了解决S. hispidus，我们调查了525 bp的线粒体细胞色素c氧化酶亚基I（COI）从198个个体在10个地点，跨越27,000公里的物种范围。系统发育分析表明，S. hispidus有一个西大西洋血统和一个广泛分布的印度-太平洋血统，分离的序列分歧为2.1%。西大西洋的遗传多样性要高得多（h = 0.929; π = 0.004）相对于印度洋-太平洋（h = 0.105; π < 0.001），合并分析表明，印度-太平洋人口最近扩大（95%HPD（最高后验密度）= 60，000 - 400，000年）比西大西洋人群（95%HPD = 300，000 - 760，000年）更高。据估计，西大西洋和太平洋谱系的分歧发生在71万至180万年前，这与海洋盆地之间通常涉及的殖民事件并不一致。种群的估计年龄与热带海洋生物多样性的流行传播路线（从印度洋-太平洋到大西洋）相矛盾，大西洋的种群最古老，最多样化，最近的种群扩张与整个广阔的印度洋和太平洋共享的单一共同单倍型。与环热带鱼类相比，这种小型礁虾挑战了我们对海洋物种传统扩散能力的理解。
The banded coral shrimp, Stenopus hispidus (Crustacea: Decapoda: Stenopodidea) is a popular marine ornamental species with a circumtropical distribution. The planktonic larval stage lasts ∼120–253 days, indicating considerable dispersal potential, but few studies have investigated genetic connectivity on a global scale in marine invertebrates. To resolve patterns of divergence and phylogeography of S. hispidus, we surveyed 525 bp of mitochondrial cytochrome c oxidase subunit I (COI) from 198 individuals sampled at 10 locations across ∼27,000 km of the species range. Phylogenetic analyses reveal that S. hispidus has a Western Atlantic lineage and a widely distributed Indo-Pacific lineage, separated by sequence divergence of 2.1%. Genetic diversity is much higher in the Western Atlantic (h = 0.929; π = 0.004) relative to the Indo-Pacific (h = 0.105; π < 0.001), and coalescent analyses indicate that the Indo-Pacific population expanded more recently (95% HPD (highest posterior density) = 60,000–400,000 yr) than the Western Atlantic population (95% HPD = 300,000–760,000 yr). Divergence of the Western Atlantic and Pacific lineages is estimated at 710,000–1.8 million years ago, which does not readily align with commonly implicated colonization events between the ocean basins. The estimated age of populations contradicts the prevailing dispersal route for tropical marine biodiversity (Indo-Pacific to Atlantic) with the oldest and most diverse population in the Atlantic, and a recent population expansion with a single common haplotype shared throughout the vast Indian and Pacific oceans. In contrast to the circumtropical fishes, this diminutive reef shrimp challenges our understanding of conventional dispersal capabilities of marine species.
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影响因子：
3.1
作者：
Bowen, BW;Muss, A;Grant, WS
通讯作者：
Grant, WS
影响因子：
56.9
作者：
Budd, Ann F.;Pandolfi, John M.
通讯作者：
Pandolfi, John M.
DOI：
10.1098/rspb.2013.1541
发表时间：
2013-10-07
影响因子：
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作者：
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作者：
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通讯作者：
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