Axiidean ghost shrimps (Decapoda: Axiidae, Callianassidae, Callichiridae, Micheleidae) of the Trindade and Martin Vaz Archipelago, Vitoria-Trindade Seamounts Chain and Abrolhos, off southeastern Brazil

Autor(es)

Pachelle, Paulo P. G. ^[1] ; Tavares, Marcos

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Museum Zool, Ave Nazareth 481, BR-04263000 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Zootaxa; v. 4758, n. 1, p. 103-126, MAR 27 2020.
• Citações Web of Science: 0

Resumo

The Trindade and Martin Vaz (TMV) volcanic archipelago is highly isolated, being located some 1200 km off the Brazilian coast and about 4200 km away from the nearest African coast. The only axiidean known from the archipelago is Coralaxius nodulosus (Meinert, 1877), a species extensively reported in the western Atlantic. From 2012 to 2018, 263 SCUBA diving and intertidal samplings were conducted at TMV and yielded 46 axiidean specimens in three species, one of which is a new species: Corallianassa longiventris (A. Milne-Edwards, 1870), Neocallichirus grandimana (Gibbes, 1850). and Fragillianassa joeli sp. nov., a species closely related to F. fragilis (Biffar, 1970). Hitherto unreported specimens from along the Vitoria-Trindade Seamounts Chain (VTSC) and the Abrolhos Bank were also included in this report, namely C. nodulosus and Michelea vandoverae (Gore, 1987). The occurrence of M vandoverae at the Abrolhos Bank extends its range into the southwestern Atlantic. Coralaxius abelei Kensley \& Gore. 1981 is herein considered a junior synonym of Coralaxius nodulosus (Meinert, 1877). Meinerta3cius Sakai. 2011, therefore becomes a subjective synonym of Coralaxius Kensley \& Gore, 1981. Axiideans from the tropical southern-central Atlantic oceanic islands (Ascension. Fernando de Noronha, Rocas Atoll, Saint Helena, Trindade and Martin Vaz) are listed with their gross distribution in the Atlantic Ocean revealing a strongly depauperate axiidean insular fauna, totaling six species. Except for Axiopsis serratifrons (A. MilneEdwards, 1873), a pantropical species, the insular southwestern-central Atlantic axiideans are entirely of western Atlantic affinities, with F. joeli sp. nov. being the only endemic so far. (AU)

• Processo FAPESP: 16/50373-6 - Diversidade taxonômica e endemismo nas ilhas oceânicas brasileiras: estudos de casos múltiplos com crustáceos Decapoda bentônicos
• Beneficiário: Marcos Domingos Siqueira Tavares
• Modalidade de apoio: Auxílio à Pesquisa - Regular