Systematic Parasitology

, Volume 83, Issue 1, pp 65–75 | Cite as

A new species of Sabellacheres M. Sars, 1862 (Copepoda: Gastrodelphyidae) from a deep-water benthic polychaete in Antarctic waters, with a key to the species of the genus

Article

Abstract

Specimens of a deep-living sabellid polychaete of the genus Perkinsiana Knight-Jones dredged in Antarctic waters were found to be parasitised by an undescribed species of the cyclopoid copepod genus Sabellacheres M. Sars, 1862. Specimens of both sexes were studied using light microscopy and SEM, and compared with its congeners. The new species, Sabellacheres antarcticus n. sp., can be distinguished from its congeners by the shape and proportions of the body and brood-pouch, its 4-segmented antennae, the shape and length of the distal process of the second antennular segment, the position of leg 3, and the structure of the male maxilliped. This is only the second record of a species of this genus from the southern hemisphere. The new species was found on a single host species, as is typical for most species of Sabellacheres. A key for the identification of both sexes of the species of Sabellacheres is included.

Notes

Acknowledgements

The copepod specimens examined were kindly made available to us by Brigitte Hilbig (Senckenberg Institute, Frankfurt), head of the Southern Ocean Annelid Project (SOAP), and James Blake (ENRS Marine and Coastal Center, Woods Hole). Mariana Tovar (Geomare, Mexico) and Beatríz Yáñez (ICMyL-UNAM, Mazatlán) encouraged this study; they sorted these specimens during their investigations on sabellid worms and are describing the new species of Perkinsiana, the host of our new species. Araceli Adabache and Marcelo Silva-Briano kindly processed the specimens for SEM and guided our examination of this material at the Universidad Autónoma de Aguascalientes, Mexico. We also thank Linda Ward for registering the type-specimens at the National Museum of Natural History, Smithsonian Institution, Washington, DC.

References

  1. Boxshall, G. A., & Halsey, S. H. (2004). An introduction to copepod diversity. London: The Ray Society, 966 pp.Google Scholar
  2. Carton, Y. (1971). Copépodes parasites de Madagascar. I. Description de Sabellacheres aenigmatopygus n. sp., copépode parasite de Potamilla reniformis (Polychètes, Sabellidae). Crustaceana, 21, 145–152.CrossRefGoogle Scholar
  3. Dudley, P. L. (1964). Some gastrodelphyid copepods from the Pacific coast of North America. American Museum Novitates, 2194, 1–51.Google Scholar
  4. Fauchald, K. (2010). World Polychaeta database. Accessed through: World Register of Marine Species at http://www.marinespecies.org/.
  5. Giangrande, A., & Gambi, M. D. (1997). The genus Perkinsiana (Polychaeta, Sabellidae) from Antarctica, with descriptions of the new species P. milae and P. borsibrunoi. Zoologica Scripta, 26, 267–278.CrossRefGoogle Scholar
  6. Gómez, S., & Tovar-Hernández, M. A. (2008). First record of Gastrodelphys dalesi (Green, 1961) (Copepoda: Cyclopoida: Gastrodelphyidae) in the sabellid polychaete Megalomma circumspectum (Moore, 1923) from the Gulf of California. In: Hendrickx, M. E. (Ed.) Contributions to the study of East Pacific Crustaceans. Vol. 5. Mazatlán, Mexico: Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, pp. 51–54.Google Scholar
  7. Green, J. (1961). A new species of Sabellacheres (Crustacea: Copepoda) parasitic on the fan worm Eudistylia polymorpha (Johnson). Proceedings of the Zoological Society of London, 136, 623–628.CrossRefGoogle Scholar
  8. Laubier, L. (1968). Sabellacheres drachi sp. n., copépode ectoparasite de Sabellidae (Annelides Polychètes). Contribution à la faunistique du coralligène, 8. Vie Milieu, 19 (2-A), 345–352.Google Scholar
  9. Markewitsch, A. P. (1940). Vermiclavella elongata n. g. et sp., ein neuer Vertreter der parasitischen Copepoden der Familie Vermiclavellidae fam. nova. Dopovidi Akademiyi Nauk Ukrayins’koiy RSR, Kiev, 12, 53–57.Google Scholar
  10. Nash, R., & Keegan, B. F. (2006). Characteristics of the association between the marine copepod, Gastrodelphys clausii, and its fanworm host Bispira volutacornis. Helgoland Marine Research, 60, 32–38.CrossRefGoogle Scholar
  11. Sars, M. (1862). Beskrivelse med Afbildninger af fire nye parasitiske Copepoder. Beretning om et nyt lernaealignende Krebsdyr, Sabellacheres gracilis Sars. Forhandlinger i Videnskabs-Selskabet i Christiania, 1861, 134–141.Google Scholar
  12. Silva-Briano, M., Martínez-Hernández, S. L., Adabache-Ortíz, A., Ventura, J., Salinas, E., & Quintanar, J. L. (2007). Ultrastructural analysis and identification of membrane proteins in the free-living amoeba Difflugia corona. Biocell, 31, 225–228.PubMedGoogle Scholar
  13. Tovar-Hernández, M. A., Yáñez-Rivera, B., Giangrande, A., & Gambi, M. C. Notes of the species of Perkinsiana (Polychaeta: Sabellidae) from Antarctica with the description of a new species. Zootaxa (submitted).Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Eduardo Suárez-Morales
    • 1
  • Geoffrey A. Boxshall
    • 2
  1. 1.El Colegio de la Frontera Sur (ECOSUR), Unidad ChetumalChetumalMexico
  2. 2.Department of ZoologyNatural History MuseumLondonUK

Personalised recommendations