Molecular taxonomy and naming of five cryptic species of<i>Alviniconcha</i>snails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Johnson, Shannon B.; Warèn, Anders; Tunnicliffe, Verena; Dover, Cindy Van; Wheat, C. G.; Schultz, Thomas F.; Vrijenhoek, Robert C.

doi:10.1080/14772000.2014.970673

Cited by 79 publications

(108 citation statements)

References 67 publications

(98 reference statements)

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“…Consequently, sampling of multiple populations at a finer scale will be required to detect cryptic population structure-a phenomenon that is becoming increasingly apparent in hydrothermal systems (e.g., Kojima et al 2001;Vrijenhoek 2009;Shank and Halanych 2007;Johnson et al 2014;Puetz 2014). Multilocus genotyping approaches tend to be more informative than morphometric or unigenic methods, but they are unable to elucidate the whole picture of genetic subdivision.…”

Section: Discussionmentioning

confidence: 99%

Population structure and connectivity in Indo-Pacific deep-sea mussels of the Bathymodiolus septemdierum complex

et al. 2015

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Current pressures to mine polymetallic sulfide deposits pose threats to the animal communities found at deep-sea hydrothermal vents. Management plans aimed at preserving these unusual communities require knowledge of historical and contemporary forces that shaped the distributions and connectivity of associated species. As most vent research has focused on the eastern Pacific and mid-Atlantic ridge systems less is known about Indo-Pacific vents, where mineral extraction activities are imminent. Deep-sea mussels (Bivalvia: Mytilidae) of the genus Bathymodiolus include the morphotypic species B. septemdierum, B. brevior, B. marisindicus, and B. elongatus which are among the dominant vent taxa in western Pacific back-arc basins and the Central Indian Ridge. To assess their interpopulational relationships, we examined multilocus genotypes based on DNA sequences from four nuclear and four mitochondrial genes, and allozyme variation encoded by eleven genes. Bayesian assignment methods grouped mussels from seven widespread western Pacific localities into a single cluster, whereas the Indian Ocean mussels were clearly divergent. Thus, we designate two regional metapopulations. Notably, contemporary migration rates among all sites appeared to be low despite limited population differentiation, which highlights the necessity of obtaining realistic data on recovery times and fine-scale population structure to develop and manage conservation units effectively. Future studies using population genomic methods to address these issues in a range of species will help to inform management plans aimed at mitigating potential impacts of deep-sea mining in the Indo-Pacific region.

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Section: Discussionmentioning

confidence: 99%

Population structure and connectivity in Indo-Pacific deep-sea mussels of the Bathymodiolus septemdierum complex

et al. 2015

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“…We also digitized vector layers for the three local faunal groups of chemoautotrophic bacteria-containing invertebrates, the provannid snails Alviniconcha spp. (cryptic species: A. kojimai, A. boucheti, A. strummeri; Johnson et al, 2015) and Ifremeria nautilei, and the mussel Bathymodiolus septemdierum (prior epithet: B. brevior; Breusing et al, 2015) ( Figures 1C-E). These primary producers and foundation species are community-structuring species and hence are the focus of our investigation concerning the natural stability of biological processes and ecosystem function on the edifices.…”

Section: Geographic Information Systems (Gis) Datamentioning

confidence: 99%

Long-Term Stability of Back-Arc Basin Hydrothermal Vents

Preez

Fisher

2018

Front. Mar. Sci.

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Since the discovery of hydrothermal vents 40-years ago, long-term time-series have focused on mid-ocean ridge systems. Based on these studies, hydrothermal vents are widely considered to be dynamic, ephemeral habitats. Under this premise, national, and international regulatory bodies are currently planning for the commercial mining of polymetallic sulfide deposits from hydrothermal vents. However, here we provide evidence of longevity and habitat stability that does not align with historic generalizations. Over a 10-year time-series focused on the back-arc basin systems off the west coast of the Kingdom of Tonga (South Pacific), we find the hydrothermal vents are remarkably stable habitats. Using high-resolution photo mosaics and spatially explicit in situ measurements to document natural changes of five hydrothermal vent edifices, we discovered striking stability in the vent structures themselves, as well as in the composition and coverage of the vent-associated species, with some evidence of microdistribution permanence. These findings challenge the way we think about hydrothermal vent ecosystems and their vulnerability and resilience to deep-sea mining activities.

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“…The studies have led to a series of discoveries of common or varying geographical subdivisions among diverse vent taxa, which, in turn, have deepened our understanding about the effect of several environmental (e.g., geomorphology of oceanic ridges, spatial and temporal stability of vent habitats, and deep-sea currents) and biological (e.g., species-specific life histories, larval duration, motility and behavior) factors on the connectivity of vent metapopulations (reviewed in Vrijenhoek, 2010). Population connectivity and genetic diversity are influenced by historical factors such as vicariance, range and/or demographic expansion through dispersal, and introgressive hybridization (backcrossing of an interspecific hybrid with one of its parent species), both in mid-ocean ridge and arc-backarc systems (Young et al, 2008;Plouviez et al, 2009;Johnson et al, 2014;Yahagi et al, 2015;Zhang et al, 2015;Jang et al, 2016).…”

Section: Genetic Approaches To Metacommunity Dynamics On Ecological Tmentioning

confidence: 99%

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

et al. 2018

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Species inhabiting deep-sea hydrothermal vents are strongly influenced by the geological setting, as it provides the chemical-rich fluids supporting the food web, creates the patchwork of seafloor habitat, and generates catastrophic disturbances that can eradicate entire communities. The patches of vent habitat host a network of communities (a metacommunity) connected by dispersal of planktonic larvae. The dynamics of the metacommunity are influenced not only by birth rates, death rates and interactions of populations at the local site, but also by regional influences on dispersal from different sites. The connections to other communities provide a mechanism for dynamics at a local site to affect features of the regional biota. In this paper, we explore the challenges and potential benefits of applying metacommunity theory to vent communities, with a particular focus on effects of disturbance. We synthesize field observations to inform models and identify data gaps that need to be addressed to answer key questions including: (1) what is the influence of the magnitude and rate of disturbance on ecological attributes, such as time to extinction or resilience in a metacommunity; (2) what interactions between local and regional processes control species diversity, and (3) which communities are "hot spots" of key ecological significance. We conclude by assessing our ability to evaluate resilience of vent metacommunities to human disturbance (e.g., deep-sea mining). Although the resilience of a few highly disturbed vent systems in the eastern Pacific has been quantified, these values cannot be generalized to remote locales in the western Pacific or mid Atlantic where disturbance rates are different and information on local controls is missing.

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Molecular taxonomy and naming of five cryptic species ofAlviniconchasnails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Cited by 79 publications

References 67 publications

Population structure and connectivity in Indo-Pacific deep-sea mussels of the Bathymodiolus septemdierum complex

Population structure and connectivity in Indo-Pacific deep-sea mussels of the Bathymodiolus septemdierum complex

Long-Term Stability of Back-Arc Basin Hydrothermal Vents

Exploring the Ecology of Deep-Sea Hydrothermal Vents in a Metacommunity Framework

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