A new species of Pseudopandarus Kirtisinghe, 1950 (Copepoda: Siphonostomatoida: Pandaridae) from sharks of the genus Squalus L. in New Caledonian waters
Both sexes of a new species of pandarid copepod are described from sharks of the genus Squalus L. (Squaliformes: Squalidae). Specimens of Pseudopandarus cairae n. sp. were collected from Squalus bucephalus Last, Séret & Pogonoski and S. melanurus Fourmanoir & Rivaton in New Caledonian waters, the first parasitic copepod to be described from either host species. This is the eighth nominal species of Pseudopandarus Kirtisinghe, 1950 and the first to be described from a shark of the order Squaliformes. Pseudopandarus cairae n. sp. is easily distinguished from P. australis Cressey & Simpfendorfer, 1988, P. longus (Gnanamuthu, 1951) Cressey, 1967, and P. pelagicus Rangnekar, 1977 in having the female genital complex concealed beneath an elongate dorsal genital shield with a trilobed posterior margin. It can be distinguished from P. gracilis Kirtisinghe, 1950 and P. scyllii Yamaguti & Yamasu, 1959 by the armature of the leg 4 endopod and by the proportions of the dorsal genital shield. The new species is unique among known species of Pseudopandarus in its possession of only 1 setal element on the distal endopod segment of leg 4. In addition to describing the new species, the host associations of all species of Pseudopandarus are reviewed and observations are made regarding sexual dimorphism and mode of attachment. A key to the species considered valid is provided.
KeywordsPosterior Margin Distal Segment Outer Margin Setal Element Plumose Seta
We are grateful to Jean-Lou Justine for collecting the specimens on which this description is based. We thank Rod Bray for collecting comparative material of P. gracilis from South Africa. We are grateful to Rony Huys and Argun Özak for providing insightful comments on early versions of the formal drawings. We also thank Chad Walter for providing reprints and maintaining helpful resources on the World of Copepods Database. JPB is a predoctoral student in the Institute for Biomedical Sciences at the George Washington University. This work is from a dissertation to be presented to the above program in partial fulfillment of the requirements for the Ph.D. degree.
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Conflict of interest
The authors declare that they have no conflict of interest.
All applicable institutional, national and international guidelines for the care and use of animals were followed.
- Boxshall, G. A., & Huys, R. (2007). Copepoda of New Caledonia. In: Payri, C. E. & Richer de Forges, B. (Eds), Compendium of Marine Species from New Caledonia. Nouméa, New Caledonia: Institut de Recherche pour le Développement, pp. 259–265.Google Scholar
- Compagno, L. J. (1984). Sharks of the world: an annotated and illustrated catalogue of shark species known to date. Rome: Food and Agriculture Organization.Google Scholar
- Compagno, L. J. V., & Niem, V. H. (1998). Carcharhinidae. Requiem sharks. In: Carpenter, K. E. & Niem, V. H. (Eds), FAO Identification Guide for Fishery Purposes. The Living Marine Resources of the Western Central Pacific. Rome: Food and Agriculture Organization, pp. 1312–1360.Google Scholar
- Cressey, R., & Simpfendorfer, C. (1988). Pseudopandarus australis, a new species of pandarid copepod from Australian sharks. Proceedings of the Biological Society of Washington, 101(2), 340–345.Google Scholar
- Dippenaar, S. M., & Jordaan, B. P. (2006). Nesippus orientalis Heller, 1868 (Pandaridae: Siphonostomatoida): descriptions of the adult, young and immature females, a first description of the male and aspects of their functional morphology. Systematic Parasitology, 65, 27–41.CrossRefPubMedGoogle Scholar
- Ebert, D. A., & Stehmann M. F. W. (2013). Sharks, batoids, and chimaeras of the North Atlantic. FAO Species Catalogue for Fishery Purposes, No. 7. Rome: Food and Agriculture Organization, pp. 1–523.Google Scholar
- Froese, R., & D. Pauly (Eds). (2016). FishBase. World Wide Web electronic publication. www.fishbase.org, version (01/2016).
- Pillai, N. K. (1985). The fauna of India: Copepod parasites of marine fishes (pp. 164–169). Calcutta: Zoological Survey of India.Google Scholar
- Pollerspöck, J., & Straube, N. (2016). www.shark-references.com, World Wide Web electronic publication, Version 2016.
- Rangnekar, P. G. (1977). Two species of copepods from the marine fishes of Bombay. Journal of the University of Bombay, 44(71), 26–34.Google Scholar
- Rangnekar, P., & Rangnekar, M. (1972). Copepods parasitic on the fishes of Bombay family Pandaridae I. Journal of the University of Bombay, 41(68), 72–87.Google Scholar
- Walter, T. C., & Boxshall, G. (2016). World of Copepods database. Accessed at http://www.marinespecies.org/copepoda on 2016-04-07.
- Yamaguti, S., & Yamasu, T. (1959). Parasitic copepods from fishes of Japan with descriptions of 26 new species and remarks on two known species. Biological Journal of Okayama University, 5(3–4), 89–165.Google Scholar