Abstract
Udonella australis n. sp., an epibiont monogenean living on caligid copepods that infest a native fish, Eleginops maclovinus (Valenciennes), off Chile, South America is described. The species can be separated from other species by its difference in size, especially body size, and the distribution of cephalic glands, vitelline follicles and genital organs. Egg-size is intermediate in comparison with that of other species. The posterior attachment mechanism consists of few muscle fibres and clumped cement-producing glands. All previous descriptions of Udonella caligorum Johnston, 1835 from off Chile correspond to this new species.
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Aken'Ova, T.O. & Lester, R.J.G. (1996) Udonella myliobati n. comb. (Platyhelminthes: Udonellidae) and its occurrence in eastern Australia. Journal of Parasitology 82}, 1017–1023.
Byrnes, T. (1986) Five species of Monogenea from Australian bream Acanthopagrus spp. Australian Journal of Zoology, 34, 65–86.
Carvajal, J., González, L. & George-Nascimento, M. (1998) Native sea lice (Copepoda: Caligidae) infestation of salmonids reared in netpen system in southern Chile. Aquaculture 166}, 241–246.
Carvajal, J., Ruiz, G. & Sepúlveda, F. (2001) Symbiotic relationship between Udonella sp. (Monogenea) and Caligus rogercresseyi (Copepoda) a parasite of the Chilean rock cod Eleginops maclovinus. Archivos de Medicina Veterinaria, 33, 31–36.
Ching, H.L. & Leighton, J.B. (1993) The presence of Udonella ophiodontis in Washington and of Udonella caligorum in British. Columbia. Journal of the Helminthological Society of Washington, 60, 137–140.
González, M.T. & Acuña, E.(1998) Metazoan parasites of the red rockfish Sebastes capensis off northern Chile. Journal of Parasitology, 84, 783–788.
Ivanov, A.V. (1952) [Structure of Udonella caligorum Johnston, 1835, and the position of Udonellidae in the system of flatworms.] Parazitologicheskii Sbornik 14}, 112–163. (In Russian).
Kornakova, E.E. & Timofeeva, T.A. (1981) [A new species of udonellid from the coast of East Murman]. Parazitologiya, 15, 56–61. (In Russian).
Nichols, K.C. (1975) Observations on lesser-known flatworms: Udonella. International Journal for Parasitology, 5, 475–482.
Olivier, P., Dippenaar, S., Khalil, L. & Mokgalong, N. (2000) Observations on a lesser-known monogenean, Udonella myliobati, from a copepod parasite, Lepeophtheirus natalensis, parasitizing the spotted ragged-tooth shark, Carcharias taurus, from South African waters. Onderstepoort Journal of Veterinary Research, 67, 135–140.
Price, E.W. (1938) North American monogenetic trematodes II. The families Monocotylidae, Microbothriidae, Acanthocotylidae, and Udonellidae (Capsaloidea). Journal of the Washington Academy of Sciences, 28, 183–198.
Rohde, K. & Watson, N.A. (1995) Comparative ultrastructural study of the posterior suckers of four species of symbiotic Platyhelminthes, Temnocephala sp. (Temnocephalida), Udonella caligorum (Udonellidae), Anoplodiscus cirrusspiralis (Monogenea, Monopisthocotylae), and Philophthalmus sp. (Trematoda: Digenea). Folia Parasitologica, 42, 11–28.
Villalba, C. (1985) Distribución, frecuencia y aspectos biológicos de Udonella caligorum Johnston (Monogenea: Udonellidae) en Lepeophtheirus mugiloidis Villalba y Durán (Copepoda: Caligidae). Boletín de la Sociedad de Biología de Concepción, 56, 121–129.
Van der Land, J. (1967) Remarks on the Subclass Udonellida (Monogenea), with description of a new species. Zoologische Mededelingen 42}, 67–81.
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Carvajal, J., Sepúlveda, F. Udonella australis n. sp. (Monogenea), an epibiont on sea-lice from native fish off southern Chile. Syst Parasitol 52, 67–74 (2002). https://doi.org/10.1023/A:1015071930647
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DOI: https://doi.org/10.1023/A:1015071930647