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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*
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: julidrm@hotmail.com

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.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 2013 

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