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- W2097807219 abstract "Abstract Recent investigations suggest that marine biodiversity may be much higher than earlier estimates, and an important hidden source of diversity in marine systems is the phenomenon of cryptic species complexes. Such complexes are informative models for research into the evolutionary processes that govern species compositions of marine fauna. The snapping shrimp genera Alpheus and Synalpheus are known to harbour large numbers of cryptic species; here, I characterize the genetic structure of the Alpheus armillatus species complex in the northern Caribbean, west Atlantic, and Gulf of Mexico using mitochondrial and nuclear sequence data. Over this geographical region, the complex harbours at least three lineages that are probable reproductively isolated species; all major lineages diverged subsequent to the close of the Isthmus of Panama. Only one lineage was present in the Gulf of Mexico, whereas outside the Gulf of Mexico there was no clear tendency for lineage dominance by geographical region, as most sites were populated by shrimp from at least two lineages. However, within each lineage, there was strong evidence of population genetic differentiation between geographical regions. All lineages showed strong signals of demographic expansion, and one lineage showed sharply reduced genetic diversity, suggestive of past population bottlenecks or recently founded populations with low gene flow from other sites. These results show that evolutionary processes leading to divergence and speciation have been common and recent in the snapping shrimp, and suggest that connectivity among shrimp populations may be limited." @default.
- W2097807219 created "2016-06-24" @default.
- W2097807219 creator A5079745728 @default.
- W2097807219 date "2006-08-21" @default.
- W2097807219 modified "2023-10-12" @default.
- W2097807219 title "Cryptic biodiversity and phylogeographical patterns in a snapping shrimp species complex" @default.
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- W2097807219 doi "https://doi.org/10.1111/j.1365-294x.2006.03077.x" @default.
- W2097807219 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/17054502" @default.
- W2097807219 hasPublicationYear "2006" @default.
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