Please use this identifier to cite or link to this item:
Title: Multigene Molecular Systematics Confirm Species Status of Morphologically Convergent Pagurus Hermit Crabs
Author: Silva, Joana Matzen da
Santos, Antonina dos
Cunha, Marina R.
Costa, Filipe O.
Creer, Simon
Carvalho, Gary R.
Keywords: Decapoda
Issue Date: Dec-2011
Publisher: Public Library of Science
Abstract: Introduction: In spite of contemporary morphological taxonomy appraisals, apparent high morphological similarity raises uncertainty about the species status of certain Pagurus hermit crabs. This is exemplified between two European species, Pagurus excavatus (Herbst, 1791) and Pagurus alatus (Fabricius 1775), whose species status is still difficult to resolve using morphological criteria alone. Methodology/Principal Findings: To address such ambiguities, we used combinations of Maximum Likelihood (ML) and Bayesian Inference (BI) methods to delineate species boundaries of P. alatus and P. excavatus and formulate an intermediate Pagurus phylogenetic hypothesis, based upon single and concatenated mitochondrial (cytochrome oxidase I [COI]) and nuclear (16S and 28s ribosomal RNA) gene partitions. The molecular data supported the species status of P. excavatus and P. alatus and also clearly resolved two divergent clades within hermit crabs from the Northeast Atlantic Ocean and the Mediterranean Sea. Conclusions/Significance: Despite the abundance and prominent ecological role of hermit crabs, Pagurus, in North East Atlantic Ocean and Mediterranean Sea ecosystems, many important aspects of their taxonomy, biology, systematics and evolution remain poorly explored. The topologies presented here should be regarded as hypotheses that can be incorporated into the robust and integrated understanding of the systematic relationships within and between species of the genus Pagurus inhabiting the Northeast Atlantic Ocean and the Mediterranean Sea.
Peer review: yes
DOI: 10.1371/journal.pone.0028233.t001
ISSN: 1932-6203
Appears in Collections:CESAM - Artigos
DBio - Artigos
PT Mar - Artigos

Files in This Item:
File Description SizeFormat 
54_MatzendaSilva_etal_2011b.pdf238.18 kBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.