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Four new species of Desmodora (Nematoda) from the deep south-east Atlantic, and a case of intersexuality in Desmodoridae

Published online by Cambridge University Press:  30 October 2013

Juliana da Rocha Moura ,
Maria Cristina da Silva  and
André Morgado Esteves
Juliana da Rocha Moura*
Affiliation:
Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Departmento de Zoologia, Cidade Universitária, Recife—Pernambuco, 50670-901Brazil
Maria Cristina da Silva
Affiliation:
Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Departmento de Zoologia, Cidade Universitária, Recife—Pernambuco, 50670-901Brazil
André Morgado Esteves
Affiliation:
Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Departmento de Zoologia, Cidade Universitária, Recife—Pernambuco, 50670-901Brazil
*
Correspondence should be addressed to: J. Moura, Universidade Federal de Pernambuco, Avenida Professor Moraes Rego, s/n, Departamento de Zoologia, Cidade Universitária, Recife—Pernambuco, Brazil50670-901. email: [email protected]
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Abstract

Four new species of the genus Desmodora are described from the South Atlantic off the south-eastern coast of the State of Rio de Janeiro, Brazil. Desmodora porosum sp. nov. is characterized by sexual dimorphism in the shape of the amphids, which are closed loop-shaped in males, and multispiral amphids in females. A case of intersexuality was found in the species, with a functional female gonad. Desmodora profundum sp. nov. is characterized by filiform spicules with a capitulum, buccal cavity with one dorsal and one small ventral tooth, tail cylindrical with a terminal spinneret, and wider rings in the neck region than on the rest of the body. Desmodora veronicae sp. nov. possesses cryptospiral amphids, a buccal cavity with one dorsal tooth and two smaller ventral teeth, 14 tubular pre-cloacal supplements, two ventral cuticular protruberances on the tail, and curved spicules with a capitulum and velum. Desmodora curvatum sp. nov. has the cuticle finely striated, without somatic setae, multispiral amphids, and a gubernaculum without apophysis, curved dorsally with the tip directed toward the end of the body.

Keywords

Desmodoramarine nematodestaxonomyintersexualitydeep seaCampos Basin
Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 94 , Issue 1 , February 2014 , pp. 85 - 104
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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