EurekaMag.com logo
+ Site Statistics
References:
53,214,146
Abstracts:
29,074,682
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Molecular phylogeny of the Forcipulatacea Asteroidea Echinodermata systematics and biogeography


Zoological Journal of the Linnean Society 162(3): 646-660
Molecular phylogeny of the Forcipulatacea Asteroidea Echinodermata systematics and biogeography
We present a comprehensively sampled three-gene phylogeny of the monophyletic Forcipulatacea, one of three major lineages within the crown-group Asteroidea. We present substantially more Southern Hemisphere and deep-sea taxa than were sampled in previous molecular studies of this group. Morphologically distinct groups, such as the Brisingida and the Zoroasteridae, are upheld as monophyletic. Brisingida is supported as the derived sister group to the Asteriidae (restricted), rather than as a basal taxon. The Asteriidae is paraphyletic, and is broken up into the Stichasteridae and four primary asteriid clades: (1) a highly diverse boreal clade, containing members from the Arctic and sub-Arctic in the Northern Hemisphere; the genus Sclerasterias; and two sister clades that contain asteriids from the Antarctic and pantropical regions. The Stichasteridae, which was regarded as a synonym of the Asteriidae, is resurrected by our results, and represents the most diverse Southern Hemisphere forcipulatacean clade (although two deep-sea stichasterid genera occur in the Northern Hemisphere). The Labidiasteridae is artificial, and should be synonymized into the Heliasteridae. The Pedicellasteridae is paraphyletic, with three separate clades containing pedicellasterid taxa emerging among the basal Forcipulatacea. Fossils and timing estimates from species-level phylogeographic studies are consistent with prior phylogenetic hypotheses for the Forcipulatacea, suggesting diversification of basal taxa in the early Mesozoic, with some evidence for more widely distributed ranges from Cretacous taxa. Our analysis suggests a hypothesis of an older fauna present in the Antarctic during the Eocene, which was succeeded by a modern Antarctic fauna that is represented by the recently derived Antarctic Asteriidae and other forcipulatacean lineages.

(PDF same-day service: $19.90)

Accession: 036131884

DOI: 10.1111/j.1096-3642.2010.00688.x



Related references

Molecular systematics of some Indo-Pacific asterinids (Echinodermata, Asteroidea): does taxonomy reflect phylogeny?. Molecular Phylogenetics and Evolution 30(3): 872-878, 2004

Comments on "the phylogeny of post-Palaeozoic Asteroidea (Neoasteroidea, Echinodermata)" by A.S. Gale and perspectives on the systematics of the Asteroidea. Zootaxa 3779: 177-194, 2014

Systematics, phylogeny and historical biogeography of the Pentagonaster clade (Asteroidea : Valvatida : Goniasteridae). Invertebrate Systematics 21(4): 311-339, 2007

Molecular systematics: implications for phylogeny, biogeography and conservation. 2006

New report of starfish Echinodermata Asteroidea for Cuban waters Nuevo registro de asteroideo Echinodermata Asteroidea para aguas cubanas. Avicennia, 14: 133-134, 2001

Patterns in phylogeny and biogeography of Antarctic brittle stars (Echinodermata : Ophiuroidea): molecular genetic signatures within the genus Ophiocten. Berichte zur Polar und Meeresforschung 533: 147-150, 2006

Molecular systematics, phylogeny and biogeography of roaches (Rutilus, Teleostei, Cyprinidae). Molecular Phylogenetics and Evolution 49(1): 362-367, 2008

Phylogeny and classification of the asteroidea echinodermata. Zoological Journal of the Linnean Society 89(2): 107-132, 1987

The starfish Echinodermata Asteroidea of the Mexican Caribbean including comments about zoogeography Los asteroideos Echinodermata Asteroidea del Caribe Mexicano incluyendo comentarios sobre su zoogeografia. Avicennia, 15: 1-8, 2002

Phylogeny and biogeography of serolid isopods and the use of ribosomal expansion segments in molecular systematics. Molecular Phylogenetics & Evolution 15(2): 165-178, May, 2000