Two new species of Annulotrema (Monogenea: Dactylogyridae) from Hydrocynus vittatus (Characiformes: Alestidae) in Lake Kariba, Zimbabwe

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Authors

KIČINJAOVÁ Maria Lujza BARSON Maxwell GELNAR Milan ŘEHULKOVÁ Eva

Year of publication 2018
Type Article in Periodical
Magazine / Source Journal of Helminthology
MU Faculty or unit

Faculty of Science

Citation
Web http://dx.doi.org/10.1017/S0022149X1700058X
Doi http://dx.doi.org/10.1017/S0022149X1700058X
Field Zoology
Keywords Annulotrema; Dactylogyridae; African tetras; Hydrocynus vittatus; Zimbabwe
Description Two new and one known species of Annulotrema Paperna & Thurston, 1969 are reported from the gills of the tigerfish Hydrocynus vittatus Castelnau, 1861, collected in Lake Kariba, Zimbabwe. The new species, Annulotrema pseudonili n. sp. and A. bracteatum n. sp., are described and distinguished mainly on the basis of features of the male copulatory organ (MCO). Annulotrema pseudonili n. sp. most closely resembles A. nili Paperna, 1973, but differs from it by possessing a more delicate MCO with a thin-walled base without a fibrous distal part. Annulotrema bracteatum n. sp. is most similar to Annulotrema ruahae Paperna, 1973, from which it differs by having an MCO composed of a longer copulatory tube and a leaf-shaped accessory piece enveloping the distal part of the tube. The presence of Annulotrema pikoides Guégan, Lambert & Birgi, 1988 on H. vittatus in Zimbabwe represents a new locality record for this parasite.
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