Molecular Phylogenetics and Evolution 120 (2018) 259–273 Contents lists available at ScienceDirect Molecular Phylogenetics and Evolution journal homepage: www.elsevier.com/locate/ympev Species diversity in the marine microturbellarian Astrotorhynchus biﬁdus sensu lato (Platyhelminthes: Rhabdocoela) from the Northeast Paciﬁc Ocean Niels W.L. Van Steenkiste , Elizabeth R. Herbert, Brian S. Leander Beaty Biodiversity Research Centre, Department of Zoology, University of British Columbia, 3529-6270 University Blvd, Vancouver, BC V6T 1Z4, Canada ARTICLE I NFO ABSTRACT Keywords: Increasing evidence suggests that many widespread species of meiofauna are in fact regional complexes of Flatworms (pseudo-)cryptic species. This knowledge has challenged the ‘Everything is Everywhere’ hypothesis and also Meiofauna partly explains the meiofauna paradox of widespread nominal species with limited dispersal abilities. Here, we Species delimitation investigated species diversity within the marine microturbellarian Astrotorhynchus biﬁdus sensu lato in the turbellaria Northeast Paciﬁc Ocean. We used a multiple-evidence approach combining multi-gene (18S, 28S, COI) phylo- Pseudo-cryptic species genetic analyses, several single-gene and multi-gene species delimitation methods, haplotype networks and COI conventional taxonomy to designate Primary Species Hypotheses (PSHs). This included the development of rhabdocoel-speciﬁc COI barcode primers, which also have the potential to aid in species identiﬁcation and delimitation in other rhabdocoels. Secondary Species Hypotheses (SSHs) corresponding to
Molecular Phylogenetics and Evolution – Elsevier
Published: Mar 1, 2018
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