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Title: The smaller vesicomyid bivalves in the genus Isorropodon (Bivalvia, Vesicomyidae, Pliocardiinae) also harbour chemoautotrophic symbionts
Author: Rodrigues, Clara F.
Cunha, Marina R.
Olu, Karine
Duperron, Sébastien
Keywords: Bacterial symbioses
Cold seeps
Gulf of Cadiz
Reduced environments
Issue Date: May-2012
Publisher: Springer Verlag
Abstract: Species of Isorropodon are vesicomyid bivalves for which little information is available regarding host phylogeny and bacterial symbioses. In this study we investigated the symbioses in three Isorropodon species from three cold seep areas: Isorropodon bigoti (Gulf of Guinea), Isorropodon megadesmus (Gulf of Cadiz) and Isorropodon perplexum (Eastern Mediterranean). Analysis of bacterial 16S ribosomal RNA gene sequences demonstrated that each vesicomyid species harbours a single symbiont phylotype, that symbionts from the three species cluster together, and that they are closely related to other known vesicomyid symbionts. These results are confirmed by other marker genes (encoding 23S rRNA and APS reductase) and by fluorescence in situ hybridization. Due to their extended depth range and transoceanic distribution Isorropodon species are interesting examples to further study evolutionary processes in bivalve hosts and their associated symbionts.
Peer review: yes
DOI: 10.1007/s13199-012-0168-0
ISSN: 0334-5114
Appears in Collections:DBio - Artigos
PT Mar - Artigos

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