| Texto completo | |
| Autor(es): |
Shimabukuro, Mauricio
;
Santos, Cinthya S. G.
;
Alfaro-Lucas, Joan M.
;
Fujiwara, Yoshihiro
;
Sumida, Paulo Y. G.
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY; v. 146, p. 8-pg., 2017-12-01. |
| Resumo | |
A new whale-fall community was discovered in the abyssal SW Atlantic Ocean (4204 m depth) during the Iata-piuna expedition. Several specimens of a new nereidid were found living in sediments around and immediately below whalebones. This new species, Neanthes shinkai, is described here. The most interesting feature of the new species is the absence of eyes on the prostomium. Although three other deep-sea Neanthes species are also eyeless, the arrangement of paragnaths on the pharynx, the shape of parapodia and the type of neuropodial falcigers chaetae can distinguish N. shinkai n. sp. from these other species. In addition, interspecific comparisons using COI fragment shown a high genetic divergence (23.6-24.9% K2P) from other Neanthes species. Some nereidids have been already known to live in association with deep-sea organic falls and other reducing environments, however this is the first record and description of a Neanthes species in a deep-sea whale-fall community. Observed behavioral and carbon and nitrogen isotopes suggest that N. shinkai n. sp. is an omnivore relying mainly on whale carcass with slightly contribution of chemosynthetic bacterial mats, suggesting that it is an inhabitant of whale-falls from SW Atlantic. (AU) | |
| Processo FAPESP: | 11/50185-1 - Biodiversidade e conectividade de comunidades bênticas em substratos orgânicos (ossos de baleia e parcelas de madeira) no Atlântico Sudoeste Profundo - BioSuOr |
| Beneficiário: | Paulo Yukio Gomes Sumida |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa BIOTA - Temático |