On the Morphology and Life History ofFasciola nyanzaeLeiper, 1910 from the Hippopotamus

Abstract

A half a century ago, R. T. Leiper described a new species belonging to the genus Fasciola from specimens which he collected from hippopotami at the Murchison Falls, on the Victoria Nile in Uganda, in the summer of 1907. This species, Fasciola nyanzae, was found in the bile ducts of the liver, and in most instances the specimens were somewhat macerated owing to the length of time that had elapsed before the animal could be recovered from the water. Nevertheless, the characteristic shape of these liver flukes and the restriction of the branched testes to the anterior third of the body made it possible to recognise them as being different from all other species of the genus known at that time.

Evolutionary Origins, Diversification, and Biogeography of Liver Flukes (Digenea, Fasciolidae)

“…The two remaining fasciolid species that were unavailable for study are Tenuifasciola tragelaphi from the sitatunga31 and Fasciola nyanzae from the hippo,32 both of which inhabit the livers of their respective hosts. In both species, the body is elongated compared with other fasciolids, but they have the morphological features characteristic of the Fasciolinae (cephalic cone, branched intestinal caeca, and reproductive organs), suggesting they are derived fasciolids.…”

“…Fasciola gigantica is transmitted by the more fully aquatic lymnaeid species Radix auricularia in Asia and Lymnaea natalensis in Africa. The latter species also transmits F. nyanzae 32 . Fasciola hepatica has been more successful than F. gigantica in exploiting diverse lymnaeid lineages 33.…”

Zoonotic Parasites of Wildlife in Africa: A Review

“…1). Fasciola nyanze was first reported in hippopotamus in 1910 and found in the bile ducts, possibly transmitted by Radix natalensis in Africa (Dinnik & Dinnik, 1961). Among the 386 browsing antelope that had been examined in South Africa and northern Namibia, one grey rhebuck (Pelea capreolus) in the Bontebok National Park harboured two F. gigantica specimens (Boomker, 1990).…”

Données complémentaires sur les organites argyrophiles superficiels du miracidium et de la cercaire de Fasciola gigantica (Cobbold, 1855) (Trematoda : Fasciolidae) et sur l’épidémiologie de ce parasite

“…Le nombre et la disposition générale des cellules ciliées correspondent à ce qui a été décrit chez le miracidium de Fasciola nyanzae par Dinnik et Dinnik (1961) et de F. hepatica (Coe, 1896 ;Mattes, 1949 ;Dawes, 1960 ;Southgate, 1970 ;Køie et coll., Fig. 5.…”