ArticleBMC evolutionary biology2011
Genetic diversity and demographic instability in Riftia pachyptila tubeworms from eastern Pacific hydrothermal vents.
Article in BMC evolutionary biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed.
- High genomic connectivity within Anatoma at hydrothermal vents along the Central and Southeast Indian Ridge.Scientific reports · 2025Article
- Range extensions of Pacific bone-eating worms (Annelida, Siboglinidae, Osedax).Biodiversity data journal · 2023Article
- Hydrothermal vent fields discovered in the southern Gulf of California clarify role of habitat in augmenting regional diversity.Proceedings. Biological sciences · 2017Article
- Geographical structure of endosymbiotic bacteria hosted by Bathymodiolus mussels at eastern Pacific hydrothermal vents.BMC evolutionary biology · 2017Article
- Population subdivision of hydrothermal vent polychaete Alvinella pompejana across equatorial and Easter Microplate boundaries.BMC evolutionary biology · 2016Article
- Article
- Comparative population structure of two dominant species,Ecology and evolution · 2016Article
- Article
- A chemosynthetic weed: the tubeworm Sclerolinum contortum is a bipolar, cosmopolitan species.BMC evolutionary biology · 2015Article
- Article
- A hybrid zone between Bathymodiolus mussel lineages from eastern Pacific hydrothermal vents.BMC evolutionary biology · 2013Article
- The spatial scale of genetic subdivision in populations of Ifremeria nautilei, a hydrothermal-vent gastropod from the southwest Pacific.BMC evolutionary biology · 2011Article
- Relevant spatial scales of chemical variation in Aplysina aerophoba.Marine drugs · 2011Article
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5 authors.
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Abstract
backgroundDeep-sea hydrothermal vent animals occupy patchy and ephemeral habitats supported by chemosynthetic primary production. Volcanic and tectonic activities controlling the turnover of these habitats contribute to demographic instability that erodes genetic variation within and among colonies of these animals. We examined DNA sequences from one mitochondrial and three nuclear gene loci to assess genetic diversity in the siboglinid tubeworm, Riftia pachyptila, a widely distributed constituent of vents along the East Pacific Rise and Galápagos Rift.
resultsGenetic differentiation (F(ST)) among populations increased with geographical distances, as expected under a linear stepping-stone model of dispersal. Low levels of DNA sequence diversity occurred at all four loci, allowing us to exclude the hypothesis that an idiosyncratic selective sweep eliminated mitochondrial diversity alone. Total gene diversity declined with tectonic spreading rates. The southernmost populations, which are subjected to superfast spreading rates and high probabilities of extinction, are relatively homogenous genetically.
conclusionsCompared to other vent species, DNA sequence diversity is extremely low in R. pachyptila. Though its dispersal abilities appear to be effective, the low diversity, particularly in southern hemisphere populations, is consistent with frequent local extinction and (re)colonization events.
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