Advertisement

Systematic Parasitology

, Volume 40, Issue 3, pp 203–212 | Cite as

A new species of Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea) from Rioraja castelnaui (Chondrichthyes: Rajoidei) in coastal waters of Argentina

  • Verónica A. Ivanov
  • Ronald A. Campbell
Article

Abstract

Acanthobothrium marplatensis n. sp. is described from the spiral intestine of the skate Rioraja castelnaui taken off Mar del Plata, Argentina. The new species is compared with those species that it most closely resembles morphologically, to species reported from other skate hosts and to species described from the same geographical region. A. marplatensis is most similar to A. paulum, A. benedeni, A. costarricense, A. fogeli, A. himanturi, A. lintoni, A. monksi, A. olseni, A. puntarenasense and A. mathiasi. All of these species share a similar combination of characters (12–40 proglottids, 20–50 testes and total length of 2–10mm). A. marplatensis can be differentiated from these species and those described from skates by a combination of the following characters: 4.79–8.44 (6.18) mm long, with 18–30 (24) proglottids, spinose cephalic peduncle 160–338 (227) long, bothridial hooks with total length 93-134 (115), 24–39 (32) testes per proglottid, cirrus-sac curved anteriorly, ovarian lobes never reaching the level of the cirrus-sac and vaginal sphincter absent. Geographically, the new species can be distinguished from A. zapterycum and three different species designated as “Acanthobothrium sp.” reported from the coast of Uruguay and Argentina by the size of the worms, number of proglottids, position of the genital pores and size of the bothridial hooks. A. marplatensis showed the greatest preference for chambers 2 and 3 of the eight chambers of the spiral intestine. The mean intensity of infection in individual hosts increased with host size and was greater in spring and summer than in cold seasons. The intensity of infection was unrelated to host sex.

Keywords

Geographical Region Coastal Water Cold Season Individual Host Great Preference 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Brooks, D.R., Mayes, M.A. & Thorson, T.B. (1981) Cestode parasites in Myliobatis goodei Garman (Myliobatiformes: Myliobatidae) from Rio de La Plata, Uruguay, with a summary of cestodes collected from South American elasmobranchs during 1975–1979. Proceedings of the Biological Society of Washington, 93, 1239–1252.Google Scholar
  2. Esch, G. W. & Fernández, J. C. (1993) A functional biology of parasitism. Ecological and evolutionary implications. London: Chapman and Hall, 337 pp.Google Scholar
  3. Euzet, L. (1959) Récherches sur les cestodes tétraphyllides des selaciens des côtes de France. Thèses a là Faculté des Sciences de Montpellier, 263 pp.Google Scholar
  4. Goldstein, R.J. (1967) The genus Acanthobothrium van Beneden, 1849 (Cestoda: Tetraphyllidea). Journal of Parasitology, 53, 455–483.Google Scholar
  5. Kennedy, C.R. (1970) The population biology of helminths of British freshwater fishes. Symposia of the British Society for Parasitology, 8, 145–159.Google Scholar
  6. Kennedy, C.R. (1975) Ecological animal parasitology. Melbourne: Blackwell Scientific Publications, 163 pp.Google Scholar
  7. Margolis, L., Esch, G.W., Holmes, A.M., Kuris, A.M., & Schad, G.A. (1982) The use of ecological terms in parasitology. Journal of Parasitology, 68, 131–133.Google Scholar
  8. McVicar, A.H. (1977) Intestinal helminth parasites of the ray Raja naevus in British waters. Journal of Helminthology, 51, 11–21.Google Scholar
  9. Menni, R.C., Ringuelet, R.A. & Aramburu, R.H. (1984) Peces marinos de la Argentina y Uruguay. Catálogo crítico ilustrado. Clave para la determinación de familias, géneros y especies. Argentina: Ed. Hemisferio Sur, 254 pp.Google Scholar
  10. Mudry, D.R. & Dailey, M.D. (1971) Postembryonic development of certain tetraphyllidean and trypanorhynchan cestodes with a possible alternative life cycle for the order Trypanorhyncha. Canadian Journal of Zoology, 49, 1249–1253.Google Scholar
  11. Ostrowski de Núñez, M. (1971) Estudios preliminares sobre la fauna parasitaria de algunos elasmobranquios del litoral bonaerense, Mar del Plata, Argentina. I. Cestodes y trematodes de Psammobatis microps (Günther) y Zapteryx brevirostris (Müller y Henle). Physis, 30, 425–446.Google Scholar
  12. Polyanski, Y.I. (1961) Ecology of parasites of marine fishes. In: Dogiel, V.A, Petrushevski, G.K. & Polyanski Y.I. (Eds.) Parasitology of fishes. Edinburgh and London: Oliver & Boyd, pp. 48–83.Google Scholar
  13. Williams, H.H. (1969) The genus Acanthobothrium Beneden, 1849. Nytt magasin for Zoologi, 17, 1–56.Google Scholar

Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • Verónica A. Ivanov
    • 1
  • Ronald A. Campbell
    • 1
  1. 1.Department of BiologyUniversity of Massachusetts DartmouthN. DartmouthUSA

Personalised recommendations