Phylogenetic species delimitation of the earthworms Eisenia fetida (Savigny, 1826) and Eisenia andrei Bouché, 1972 (Oligochaeta, Lumbricidae) based on mitochondrial and nuclear DNA sequences
作者： Marcos Pérez-Losada , Julio Eiroa , Salustiano Mato , Jorge Domínguez
DOI: 10.1016/J.PEDOBI.2005.02.004
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摘要: Summary Three samples (11 individuals) of Eisenia fetida (Savigny, 1826) and four (20 andrei Bouche, 1972 (focal species), two (six eiseni (Levinsen, 1884) (nonfocal species; outgroup) were tested for species delimitation using the phylogeny-based method Wiens Penkrot (2002). Thirty-seven 17 DNA sequences nuclear 28S (2031 bp) mitochondrial COI (658 bp) genes, respectively, generated. Phylogenetic hypotheses each gene both combined built maximum parsimony, likelihood, Bayesian approaches. Fully resolved well-supported trees (>90% bootstrap proportions 1.0 posterior probabilities) showed E. as monophyletic. Application Penkrot's protocol to those resulted in recognition these taxa different phylogenetic species. This result complements previous studies crossability allozyme genetics addressing their biological status (biological concept). Finally, our analyses also show that is composed reproductively isolated populations suggest presence a hitherto unrecognized or subspecies within this taxon.
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