Phylogenetic relationships among Opisthobranchia (Mollusca: Gastropoda) based on mitochondrial cox 1, trnV, and rrnL genes

Molecular Phylogenetics and Evolution
Cristina GrandeRafael Zardoya

Abstract

We reconstructed the phylogenetic relationships among 37 species representing seven main lineages within Opisthobranchia (Mollusca: Gastropoda) based on a mitochondrial fragment that included partial cox 1, complete trnV, and partial rrnL genes (about 2500 bp). Phylogenetic analyses confirmed tentatively that all studied main opisthobranch lineages conformed monophyletic groups except Nudibranchia. The sacoglossan Ascobulla was placed as the most basal lineage of opisthobranchs. The basommatophoran pulmonate Siphonaria was recovered within Opisthobranchia between Ascobulla and the remaining opisthobranchs. The latter were divided into two different lineages that await formal description: on one side, Cephalaspidea, Tylodinoidea, and Anaspidea (sharing features in the reproductive, digestive, and circulatory systems) were grouped together and, on the other Architectibranchia and Nudipleura (sharing similarities in the circulatory system) were recovered as sister group taxa. Two well-supported clades were recovered within Nudipleura: Pleuroanthobranchia (new taxon) and Cladobranchia. Pleuroanthobranchia (Pleurobranchoidea plus Anthobranchia) was defined by the presence of blood gland, the presence of calcareous spicules in the in...Continue Reading

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Citations

Feb 26, 2008·BMC Evolutionary Biology·Annette Klussmann-KolbChristian Albrecht
Jun 22, 2011·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Paul S Katz
May 13, 2010·Molecular Phylogenetics and Evolution·Marta Pola, Terrence M Gosliner
Dec 28, 2006·Cell·Leonid L MorozEric R Kandel
Aug 24, 2016·ZooKeys·Bart E M W StoffelsGerard van der Velde
Jun 24, 2011·PloS One·Charlotte NoyerMikel A Becerro
Sep 26, 2006·The Journal of Comparative Neurology·James M NewcombPaul S Katz
Dec 21, 2006·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·James M Newcomb, Paul S Katz
Feb 6, 2008·Journal of Natural Products·José G NapolitanoManuel Norte

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