Folia Parasitologica, vol. 59 (2012), issue 1

Folia Parasitologica 59[1] 64-70 (2012) | 10.14411/fp.2012.010

A new species of Neoascarophis (Nematoda: Cystidicolidae) parasitic in Mullus argentinae (Perciformes: Mullidae) from the Atlantic coast of South America

Aldenice N. Pereira1, Juan T. Timi2, Fabiano M. Vieira1, José L. Luque1
1 Curso de Pós-Graduação em Ciências Veterinárias and Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Caixa Postal 74.508, CEP 23851-970, Seropédica, RJ, Brasil;
2 Laboratorio de Parasitología, Instituto de Investigaciones Marinas y Costeras (IIMyC), Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Funes 3350, (7600) Mar del Plata, Argentina

A new nematode species (Neoascarophis mariae n. sp.) is described based on specimens collected from the Argentine goatfish Mullus argentinae (Hubbs et Marini) from coastal waters off the state of Rio de Janeiro, Brazil. In the genus, the new species belongs to the group of species with females that have the vulva near the posterior end of the body. Only males of Neoascarophis longispicula Moravec et Klimpel, 2009 are known and can be distinguished from those of the new species by their larger body, developed and somewhat dorsoventrally expanded flat inner part of the pseudolabia, bifurcate deirids and larger spicules (the left one with a rounded tip) with a different length ratio. Other species with females that have the vulva near the equatorial region are N. yarihige Machida, 1976 and N. bathygadi Machida, 1976. Both males and females of N. yarihige are longer than those of the new species and have a shorter vestibule; males have shorter spicules with a different length ratio. Neoascarophis bathygadi is the only member of the genus that shares the presence of a cephalic vesicle with the new species, which, however, is shorter and arises at 40 µm from the anterior end instead from the deirids, as in the new species. Both males and females of N. bathygadi are also longer than those of the new species and have a shorter vestibule; males have a larger left spicule, but shorter right spicule and a different length ratio. Ascarophis upeneichthys Johnston et Mawson, 1945, a parasite of a mullid host, is transferred to Neoascarophis Machida, 1976 and is distinguished from the new species by having a shorter vestibule in females and shorter spicules (left spicule with a pointed tip) with a different length ratio in males.

Keywords: Neoascarophis, Mullus argentinae, marine fish, nematode, South America

Received: November 30, 2011; Accepted: December 17, 2011; Published: February 23, 2012


References

  1. Brugni N.L., Viozzi G.P. 2008: New cystidicolid species (Nematoda) from Galaxias platei (Osmeriformes: Galaxiidae) in Patagonian freshwater environments. J. Parasitol. 94: 841-846 Go to original source... Go to PubMed...
  2. Bush A.O., Lafferty K.D., Lotz J.M., Shostak A.W. 1997: Parasitology meets ecology on its own terms: Margolis et al. revisited. J. Parasitol. 83: 575-583 Go to original source... Go to PubMed...
  3. Cernotikova E., Horak A., Moravec F. 2011: Phylogenetic relationships of some spirurine nematodes (Nematoda: Chromadorea: Rhabditida: Spirurina) parasitic in fishes inferred from SSU rRNA gene sequences. Folia Parasitol. 58: 135-148 Go to original source... Go to PubMed...
  4. Cousseau M.B., Perrotta R.G. 2004: Peces marinos de Argentina. Biologia, distribucion, pesca. 2nd ed. Publicaciones especiales INIDEP, Mar del Plata, Argentina. 167 pp
  5. Ferrer E., Aznar F.J., Balbuena J.A., Kostadinova A., Raga J.A., Moravec F. 2005: A new cystidicolid nematode from Mullus surmuletus (Perciformes: Mullidae) from the western Mediterranean. J. Parasitol. 91: 335-344 Go to original source... Go to PubMed...
  6. Froese R., Pauly D. ( Eds .) 2011: FishBase. World Wide Web electronic publication. www.fishbase.org, version 08/2011
  7. Johnston T.H., Mawson P.M. 1945: Parasitic nematodes. B.A.N.Z. Antarctic Res. Exp. 1929-1931, 5: 73-159
  8. Ko R.C. 1986: A preliminary review of the genus Ascarophis van Beneden, 1871 (Nematoda: Cystidicolidae) of the gastrointestinal tract of fishes. Department of Zoology, University of Hong Kong, Hong Kong, China, 54 pp
  9. Lanfranchi A.L., Rossin M.A., Timi J.T. 2009: Parasite infracommunities of a specialised marine fish species in a compound community dominated by generalist parasites. J. Helminthol. 83: 373-378 Go to original source... Go to PubMed...
  10. Luque J.L., Mouillot D., Poulin R. 2004: Parasite biodiversity and its determinants in coastal marine teleost fishes of Brazil. Parasitology 128: 671-682 Go to original source... Go to PubMed...
  11. Luque J.L., Porrozzi F., Alves D.R. 2002: Community ecology of the metazoan parasites of argentine goatfish, Mullus argentinae (Osteichthyes: Mullidae), from the coastal zone of the state of Rio de Janeiro, Brazil. Rev. Bras. Parasitol. Vet. 11: 33-38
  12. Machida M. 1976: Nematodes from the deep-sea fishes of Suruga Bay. II. Two new rhabdochonid nematodes from the macrouroid fishes. Bull. Nat. Sci. Mus., Ser. A (Zool.) 2: 1-6
  13. Moravec F. 2007: Some aspects of the taxonomy and biology of adult spirurine nematodes parasitic in fishes: a review. Folia Parasitol. 54: 239-257 Go to original source... Go to PubMed...
  14. Moravec F., Klimpel S. 2009: Two new species of cystidicolid nematodes from the digestive tract of the deep-sea fish Coryphaenoides mediterraneus (Giglioli) (Macrouridae) from the Mid-Atlantic Ridge. Syst. Parasitol. 73: 37-47 Go to original source... Go to PubMed...
  15. Moravec F., Klimpel S., Kara E. 2006: Neoascarophis macrouri n. sp. (Nematoda: Cystidicolidae) from the stomach of Macrourus berglax (Macrouridae) in the eastern Greenland Sea. Syst. Parasitol. 63: 231-237 Go to original source... Go to PubMed...
  16. Moravec F., Orecchia P., Paggi L. 1988: Three interesting nematodes from the fish Parupeneus indicus (Mullidae: Perciformes) of the Indian Ocean, including a new species, Ascarophis parupenei sp. n. (Habronematoidea). Folia Parasitol. 35: 47-57 Go to PubMed...
  17. Naidenova N.N., Nikolaeva V.M. 1968: On the nematode fauna of some benthic fishes of the Mediterranean basin. Biologiya Morya 14: 63-82. (In Russian.)
  18. Parukhin A.M. 1978: New species of nematodes from Indian Ocean fish. Materialy Nauchnoi Konferentsii Vsesoyuznogo Obshchestva Gel'mintologov (Biologicheskie osnovy bor'by s gel'mintozami cheloveka i zhivotnykh) 30: 125-129. (In Russian.)
  19. Rossin M.A., Incorvaia I.S., Timi J.T. 2012: A new species of Neoascarophis (Nematoda: Cystidicolidae) parasitic in Macrourus carinatus (Macrouridae) from Argentinean waters. J. Parasitol. (In press.)
  20. Solovjeva G. F. 1991: Metabronema insulanum sp. n. (Nematoda: Spirurina), a parasite of deep-sea fishes of the Pacific Ocean. Parazytologiya 25: 556-558. (In Russian.)