A new species of Phyllochaetopterus (Annelida: Chaetopteridae) from deep-sea hydrothermal Ashadze-1 vent field, Mid-Atlantic Ridge: taxonomical description and partial COI DNA sequence

Type Article
Date 2010
Language English
Author(s) Morineaux Marie1, Nishi Eijiroh2, Ormos Andrea3, Mouchel OlivierORCID1
Affiliation(s) 1 : IFREMER, Ctr Brest, Dept Etud Ecosyst Profonds, F-29280 Plouzane, France.
2 : Yokohama Natl Univ, Manazuru Marine Lab, Kanagawa 2590202, Japan.
3 : Smithsonian Inst, Natl Museum Nat Hist, Labs Analyt Biol, Washington, DC 20013 USA.
Source Cahiers De Biologie Marine (0007-9723) (Station Biologique de Roscoff), 2010 , Vol. 51 , N. 3 , P. 239-248
WOS© Times Cited 9
Keyword(s) Polychaeta, Hydrothermal vent, Mid-Atlantic Ridge, Taxonomy, New species, COI
Abstract Phyllochaetopterus polus, a new species of the polychaete family Chaetopteridae is described. Specimens were collected at the Ashadze-1 vent field (Mid-Atlantic Ridge), from 4100-4200 m depth. P polus is the first chaetopterid reported from the Atlantic hydrothermal vents. Three chaetopterid species have been recorded from deep-sea hydrothermal vents belonging to two genera, Spiochaetopterus and Phyllochaetopterus. P polus sp. nov. is a medium-sized chaetopterid, characterized by 9 chaetigers in region A and 2 in region B; region C is usually incomplete in the specimens examined, but has at least 40-70 chaetigers. This polychaete has one pair of modified chaetae in chaetiger 4 with a pear-shaped obliquely truncated head, triangular uncini and a branched annulated tube. The species resembles P lauensis Nishi & Rouse, 2007 in most characters but differs by the colour of the ventral shield and tube structure. Blast results of a 655 bp fragment of the mitochondrial DNA COI gene of this new species revealed Phyllochaetopterids as the closest available sequences in Genbank. A phylogenetic tree has been further built using all other COI chaetopterid polychaete sequences found in Genbank to infer phylogenetic position of the new species. It adds to the previous observations of close proximity of communities associated to whale falls and hydrothermal vents communities as the phylogenetically closest species is an undescribed Phyllochaetopterus found around whale fall in Monterey Bay (California).
Full Text
File Pages Size Access
Publisher's official version 10 779 KB Open access
Top of the page

How to cite 

Morineaux Marie, Nishi Eijiroh, Ormos Andrea, Mouchel Olivier (2010). A new species of Phyllochaetopterus (Annelida: Chaetopteridae) from deep-sea hydrothermal Ashadze-1 vent field, Mid-Atlantic Ridge: taxonomical description and partial COI DNA sequence. Cahiers De Biologie Marine, 51(3), 239-248. Open Access version : https://archimer.ifremer.fr/doc/00013/12439/