New species of bone-eating worm Osedax from the abyssal South Atlantic Ocean (Annelida, Siboglinidae)

Abstract. A new species of bone-eating annelid, Osedaxbraziliensissp. n., found in a sunken whale carcass at a depth of 4,204 m at the base of the São Paulo Ridge in the South Atlantic Ocean off the Brazilian coast is described. The organism was retrieved using the human-occupied vehicle Shinkai 650...

Descripción completa

Detalles Bibliográficos
Autores principales: Fujiwara, Yoshihiro, Jimi, Naoto, Sumida, Paulo Y.G., Kawato, Masaru, Hiroshi Kitazato
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2019
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333729/
https://www.ncbi.nlm.nih.gov/pubmed/30651712
http://dx.doi.org/10.3897/zookeys.814.28869
Descripción
Sumario:Abstract. A new species of bone-eating annelid, Osedaxbraziliensissp. n., found in a sunken whale carcass at a depth of 4,204 m at the base of the São Paulo Ridge in the South Atlantic Ocean off the Brazilian coast is described. The organism was retrieved using the human-occupied vehicle Shinkai 6500 during the QUELLE 2013 expedition. This is the 26(th) species of the genus and the first discovery from the South Atlantic Ocean, representing the deepest record of Osedax worldwide to date. This species morphologically resembles Osedaxfrankpressi but is distinguished by the presence of a yellow bump or patch behind the prostomium and its trunk length. Molecular phylogenetic analysis using three genetic markers (COI, 16S, and 18S) showed that O.braziliensissp. n. is distinct from all other Osedax worms reported and is a sister species of O.frankpressi.

Ejemplares similares