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NameMah, C.L. (2006). Phylogenetic analysis and biogeography of the deep-sea goniasterid, Circeaster (Echinodermata: Asteroidea) including descriptions of six new species. Zoosystema. 28(4): 917-954.
AuthorsMah, C. L.
Year2006
TitlePhylogenetic analysis and biogeography of the deep-sea goniasterid, Circeaster (Echinodermata: Asteroidea) including descriptions of six new species
JournalZoosystema
Suffix28(4): 917-954
Type Publication
AbstractA phylogenetic analysis of 13 taxa and 33 characters resulted in a single most parsimonious tree that supports monophyly of the goniasterid (Echinodermata, Asteroidea) genus Circeaster Koehler, 1909 and supports re-establishment of the genus Lydiaster Koehler, 1909. The phylogeny supports monophyly of the ingroup, including 10 species, six of which, C. kristinae n. sp., C. helenae n. sp., C. arandae n. sp., C. loisetteae n. sp., C. sandrae n. sp., and C. pullus n. sp., are new. Phylogenetic results support diversification into the Indian, Pacific, and Atlantic ocean basins. The phylogeny is constrained by a sister taxon with a Cretaceous fossil occurrence and two geologic events, including the closure of the Indonesian seaway and formation of the Panamanian isthmus. These events formed barriers limiting or preventing larval dispersal between the Indian/Pacific and the Pacific/Atlantic oceans. Larval dispersal through a deep-sea environment was a significant consideration for estimating timing constraints from paleoenvironments. Based on fossil constraints, ancestry for the lineage is suggested as early as the Late Cretaceous with subsequent diversification in the Cenozoic. In situ observations of Circeaster perched on bare deep-sea coral skeletons and morphological similarities with other known corallivorous goniasterids suggest important ecological roles in the deep-sea.
Geographical
terms
Indian Ocean
Tropical Pacific
Tropical West Atlantic
West Australia
Bibliographical
terms
Abyssal, Deep-Sea
Bathyal, Continental slope
Bathymetric distribution, bathymetric zonation
Taxonomic
term
Asteroidea
Taxa
(11)
Checked: verified by a taxonomic editorCirceaster Koehler, 1909 (additional source)
Checked: verified by a taxonomic editorCirceaster americanus (A.H. Clark, 1916) (additional source)
Checked: verified by a taxonomic editorCirceaster arandae Mah, 2006 (original description)
Checked: verified by a taxonomic editorCirceaster helenae Mah, 2006 (original description)
Checked: verified by a taxonomic editorCirceaster kristinae Mah, 2006 (original description)
Checked: verified by a taxonomic editorCirceaster loisetteae Mah, 2006 (original description)
Checked: verified by a taxonomic editorCirceaster pullus Mah, 2006 (original description)
Checked: verified by a taxonomic editorCirceaster sandrae Mah, 2006 (original description)
Checked: verified by a taxonomic editorGoniasteridae Forbes, 1841 (additional source)
Checked: verified by a taxonomic editorLydiaster Koehler, 1909 (basis of record)
Checked: verified by a taxonomic editorLydiaster johannae Koehler, 1909 (additional source)
Distributions
(17)
Caribbean Sea for Circeaster americanus (A.H. Clark, 1916)
Florida for Circeaster americanus (A.H. Clark, 1916)
Hawaiian Islands for Circeaster pullus Mah, 2006
Indian Ocean for Circeaster magdalenae Koehler, 1909
Madagascar for Circeaster arandae Mah, 2006
Madagascar for Circeaster magdalenae Koehler, 1909
Madagascar for Lydiaster Koehler, 1909
Marquesas Islands for Circeaster sandrae Mah, 2006
Mexico for Circeaster americanus (A.H. Clark, 1916)
New Caledonia for Circeaster arandae Mah, 2006
New Caledonia for Circeaster pullus Mah, 2006
New Caledonia for Circeaster sandrae Mah, 2006
Nicaraguan part of the Caribbean Sea for Circeaster americanus (A.H. Clark, 1916)
Solomon Islands for Circeaster loisetteae Mah, 2006
Venezuelan part of the Caribbean Sea for Circeaster americanus (A.H. Clark, 1916)
Western Australia (state) for Circeaster helenae Mah, 2006
Western Australia (state) for Circeaster loisetteae Mah, 2006
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history
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2013-01-12 18:30:12Z  created  db_admin
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