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The first record of Naushonia (Thalassinidea, Laomediidae) from the South Atlantic and the larval development of a probably new species

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The genus Naushonia is recorded for the first time in the western South Atlantic Ocean from their trachelifer larvae. The larvae were collected in the coralline region of Abrolhos (Bahia State, Brazil) during cruise Bahia I of the R/V "Thalassa". Eight larvae were found in five distinct stages (second to sixth zoea), identified by the degree of development of the appendages. Naushonia sp. larvae resemble the larvae of Naushonia crangonoides in their general trachelifer-like shape, the asymmetrical mandibles, and the pleural spines on abdominal somites 1-5. On the other hand, differences observed in the development and setation of appendages suggest that Naushonia sp. belongs to an as yet undescribed species. O gênero Naushonia foi registrado pela primeira vez na região oeste do Oceano Atlântico Sul a partir de larvas tipo traquelifer. As larvas foram coletadas na região coralina de Abrolhos (Estado da Bahia, Brasil) durante o cruzeiro Bahia I do N.Oc. "Thalassa". Foram coletadas oito larvas em cinco estádios distintos (zoé II a VI), identificadas pelo grau de desenvolvimento dos apêndices. As larvas de Naushonia sp. assemelham-se às larvas de Naushonia crangonoides na forma geral do corpo, nas mandíbulas assimétricas e na presença de espinhos pleurais nos somitos abdominais 1-5. Em contrapartida, diferenças observadas no desenvolvimento e no padrão de cerdas dos apêndices indicam que Naushonia sp. pertence a uma espécie ainda não descrita.

Affiliations: 1: Laboratório Integrado de Zooplâncton e Ictioplâncton, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Cidade Universitária, Rio de Janeiro, RJ, 21941-590, Brazil; Programa de Pós-graduação em Zoologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, RJ, 20940-040, Brazil; 2: Laboratório Integrado de Zooplâncton e Ictioplâncton, Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Cidade Universitária, Rio de Janeiro, RJ, 21941-590, Brazil; Programa de Pós-graduação em Zoologia, Museu Nacional, Universidade Federal do Rio de Janeiro, Quinta da Boa Vista, São Cristóvão, Rio de Janeiro, RJ, 20940-040, Brazil

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/content/journals/10.1163/156854008x354975
2008-09-01
2017-05-23

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