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Bleidorn, Christoph; Hill, Natascha; Erséus, Christer; Tiedemann, Ralph. (2009). On the role of character loss in orbiniid phylogeny (Annelida): Molecules vs. morphology. Molecular Phylogenetics and Evolution. 52(1): 57-69.
10.1016/j.ympev.2009.03.022 [view]
Bleidorn, Christoph; Hill, Natascha; Erséus, Christer; Tiedemann, Ralph
On the role of character loss in orbiniid phylogeny (Annelida): Molecules vs. morphology
Molecular Phylogenetics and Evolution
52(1): 57-69
World Polychaeta Database (WPolyD)
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Orbiniid phylogeny is matter of debate and incongruence between hypothesis based on molecules and morphology has been repeatedly reported. Moreover, the phylogenetic position of the "oligochaetoid polychaetes" of the taxon Questa varies between morphological and molecular cladistic analyses. Here, we present a nearly complete mitochondrial genome of Questa ersei. The mitochondrial gene order is roughly identical to known orbiniid taxa. Several translocations of tRNAs are unique to Orbiniidae and Questa when compared to other annelid mitochondrial genomes. Additionally, we assembled sequence data of six genes (18S, 16S, cox1, cox3, nad1, nad4) for a representative orbiniid taxon sampling and analysed all data in concatenation using Maximum Likelihood and Bayesian inference. For comparison with morphology we compiled a morphological data matrix for all taxa included in our molecular analyses. Our results strongly support a close relationship of Questa with orbiniids (sequence data, gene order, an 18 bp indel, morphology), and a position nested within orbiniids is recovered in our sequence based analyses. We demonstrate remarkable incongruence of most included morphological characters with the recovered best ML tree and suppose that repeated independent character loss might be an explanation.
Molecular systematics, Molecular biology
Phylogeny, Phylogenesis
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2017-06-05 09:08:43Z

Aricia rubra Webster, 1879 accepted as Leodamas rubrus (Webster, 1879) (new combination reference)
 Taxonomic remark

Specimens from Mar del Plata, Argentina, identified as Protoariciella uncinata Hartmann-Schröder, 1962 by Elias et ... [details]