A new vent limpet in the genus Lepetodrilus (Gastropoda: Lepetodrilidae) from Southern Ocean hydrothermal vent fields showing high phenotypic plasticity

Linse, Katrin ORCID: https://orcid.org/0000-0003-3477-3047; Rotermann, C.N.; Chen, C.. 2019 A new vent limpet in the genus Lepetodrilus (Gastropoda: Lepetodrilidae) from Southern Ocean hydrothermal vent fields showing high phenotypic plasticity. Frontiers in Marine Science, 6, 381. https://doi.org/10.3389/fmars.2019.00381

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Text (Open Access) Copyright © 2019 Linse, Roterman and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. fmars-06-00381.pdf - Published Version Available under License Creative Commons Attribution 4.0. Download (8MB) | Preview

Abstract/Summary

The recently discovered hydrothermal vent ecosystems in the Southern Ocean host a suite of vent-endemic species, including lepetodrilid limpets dominating in abundance. Limpets were collected from the chimneys, basalts and megafauna of the East Scotia Ridge segments E2 and E9 and the Kemp Caldera at the southern end of the South Sandwich Island arc. The limpets varied in size and shell morphology between vent fields and displayed a high degree of phenotypic plasticity. Size frequency analyses between vent fields suggests continuous reproduction in the limpet and irregular colonisation events. Phylogenetic reconstructions and comparisons of mitochondrial COI gene sequences revealed a level of genetic similarity between individuals from the three vent fields consistent with their belonging to a single molecular operational taxonomic unit. Here we describe Lepetodrilus concentricus n. sp., and evaluate its genetic distinctness and pylogenetic position with congeners based on the mitochondrial COI gene. Results indicate that L. concentricus n. sp. is a sister species towith the two species estimated to have diverged within the last ~5 million years.

Item Type:	Publication - Article
Digital Object Identifier (DOI):	https://doi.org/10.3389/fmars.2019.00381
Additional Keywords:	East Scotia Ridge, deep-sea, Mollusca, Morphometrics, new species, phylogenetics
Date made live:	26 Jun 2019 13:55 +0 (UTC)
URI:	https://nora.nerc.ac.uk/id/eprint/509683

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