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Ancyrocephalid [Monogenea] parasites from siluriform fishes from the Paranean-Platean ichthyogeographical province in Argentina

100%

Suriano D. M., Incorvaia I. S.

Acta Parasitologica

1995

tom 40

nr 3

Ancyrocephalid parasites from fishes belonging to the order Siluriformes from the Paranean-Platean ichthyogeographical province (Ringuelet 1975) of the Neotropical Region were studied. Two new genera, Paramphocleithrium gen. n. and Unibarra gen. n., are defined and four new species, Vancleaveus platensis sp. n., Cosmetocleithrum longivaginatum sp. n., Paramphocleithrium bidiverticulatum sp. n. and Unibarra paranoplatensis sp. n. are described. A key for the determination of ancyrocephalid parasites from siluriform fishes of the Amazonian and Paranean-Platean provinces is proposed. Four genera of ancyrocephalid monogeneans were exclusively found in the Paranean-Platean province (Amphocleithrium, Demidospermus, Unibarra, Paramphocleithrium), one exclusively in the Amazonian province (Unilatus) and three genera were common to both provinces (Philocorydoras, Vancleaveus, Cosmetocleithrum).

A new species of Hysterothylacium (Ascaridoidea, Anisakidae) parasitic in Zenopsis conchifer (Zeiformes, Zeidae) from Argentinean waters

81%

Rossin M. A., Datri L. L., Incorvaia I. S., Timi J. T.

Acta Parasitologica

2011

tom 56

nr 3

A new species of parasitic nematode, Hysterothylacium spirale sp. nov. (Ascaridoidea, Anisakidae), is described based on specimens collected from the intestine and pyloric caeca of the silvery john dory Zenopsis conchifer (Lowe) (Zeiformes, Zeidae), from the Argentinean Shelf (35°05′–40°46′S, 53°03′–58°07′W). Among the 66 valid species described so far in the genus, the new species most closely resembles H. zenis (Baylis, 1929). Both species, apparently specific for fishes of the family Zeidae, share the shape of the dorsal lip, the long expanded lateral alae originating from subventral interlabia and the ornamentation of the tail tip, as well as general morphometry. The combination of these shared features distinguishes both species from all congeners so far known. However, the new species is distinguishable from H. zenis by having shorter interlabia, and consequently the lateral alae originating more posteriorly, shorter spicules, a smaller number of postcloacal papillae and the presence of two pairs of double postcloacal papillae.

Ograniczanie wyników

2 Acta Parasitologica

2 Incorvaia I. S.

1 Datri L. L.

1 Rossin M. A.

1 Suriano D. M.

1 Timi J. T.

1 2011

1 1995

Wyniki wyszukiwania

Ancyrocephalid [Monogenea] parasites from siluriform fishes from the Paranean-Platean ichthyogeographical province in Argentina

A new species of Hysterothylacium (Ascaridoidea, Anisakidae) parasitic in Zenopsis conchifer (Zeiformes, Zeidae) from Argentinean waters