n African Zoology - Invasion of a South African (Anguillidae) population by the alien gill worm (Monogenea)

Volume 46, Issue 2
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X
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The parasitic gill monogenean is alien to Africa. In an investigation of 227 longfin eel, , and 26 mottled eel, , sampled from four river systems in the Eastern Cape, South Africa, this parasite was only present on the gills of sampled from the Great Fish River system. In the Great Fish River, it infected 73.2% of the sampled population at a mean intensity of 63.8 ± 34.3 parasites per fish. High prevalence and intensity are indicative of a well-established alien invasive parasitic species. Results showing the absence of from the co-occurring but less abundant indicate that this species may be less susceptible to infection.

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