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Molecular phylogeny and evolution of the cone snails (Gastropoda, Conoidea)
- Source :
- Molecular Phylogenetics and Evolution, Molecular Phylogenetics and Evolution, Elsevier, 2014, 78, pp.290-303, Molecular Phylogenetics And Evolution (1055-7903) (Academic Press Inc Elsevier Science), 2014-09, Vol. 78, P. 290-303
- Publication Year :
- 2014
- Publisher :
- HAL CCSD, 2014.
-
Abstract
- We present a large-scale molecular phylogeny that includes 320 of the 761 recognized valid species of the cone snails (Conus), one of the most diverse groups of marine molluscs, based on three mitochondrial genes (COI, 16S rDNA and 12S rDNA). This is the first phylogeny of the taxon to employ concatenated sequences of several genes, and it includes more than twice as many species as the last published molecular phylogeny of the entire group nearly a decade ago. Most of the numerous molecular phylogenies published during the last 15 years are limited to rather small fractions of its species diversity. Bayesian and maximum likelihood analyses are mostly congruent and confirm the presence of three previously reported highly divergent lineages among cone snails, and one identified here using molecular data. About 85% of the species cluster in the single Large Major Cade; the others are divided between the Small Major Cade (similar to 12%), the Conus califomicus lineage (one species), and a newly defined clade (similar to 3%). We also define several subclades within the Large and Small major clades, but most of their relationships remain poorly supported. To illustrate the usefulness of molecular phylogenies in addressing specific evolutionary questions, we analyse the evolution of the diet, the biogeography and the toxins of cone snails. All cone snails whose feeding biology is known inject venom into large prey animals and swallow them whole. Predation on polychaete worms is inferred as the ancestral state, and diet shifts to molluscs and fishes occurred rarely. The ancestor of cone snails probably originated from the Indo-Pacific; rather few colonisations of other biogeographic provinces have probably occurred. A new classification of the Conidae, based on the molecular phylogeny, is published in an accompanying paper.
- Subjects :
- 0106 biological sciences
12SrRNA
Conidae
Lineage (evolution)
Conus
Zoology
[SDV.BID.SPT]Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy
010603 evolutionary biology
01 natural sciences
Article
Cone snail
Evolution, Molecular
COI
03 medical and health sciences
Gastropoda
[SDV.BID.SPT] Life Sciences [q-bio]/Biodiversity/Systematics, Phylogenetics and taxonomy
Genetics
Animals
Conoidea
14. Life underwater
Molecular Biology
Phylogeny
Ecology, Evolution, Behavior and Systematics
ComputingMilieux_MISCELLANEOUS
030304 developmental biology
0303 health sciences
biology
Conus Snail
Ancestral state reconstruction
Bayes Theorem
biology.organism_classification
Phylogeography
Genes, Mitochondrial
Molecular phylogenetics
16SrRNA
Subjects
Details
- Language :
- English
- ISSN :
- 10557903 and 10959513
- Database :
- OpenAIRE
- Journal :
- Molecular Phylogenetics and Evolution, Molecular Phylogenetics and Evolution, Elsevier, 2014, 78, pp.290-303, Molecular Phylogenetics And Evolution (1055-7903) (Academic Press Inc Elsevier Science), 2014-09, Vol. 78, P. 290-303
- Accession number :
- edsair.doi.dedup.....ab0c27457df1958a72c25052a04f8e9e