Helminthological studies in francolins (Galliformes: Phasianidae) of Sindh, Pakistan with two new species and epidemiological parameters.

Abstract

Francolins are among the very gregarious variety of game birds severely infected by various parasites that may cause an important source for infection transmission in humans by eating them very fondly in the country. During this study, two commonly found francolins species of the region; Francolinus francolinus (Black Francolin) and F. pondicerianus (Grey Francolin), were examined for helminthes fauna. The study deals with the primary survey of helminthic infection occur in the francolin birds (Phasianidae: Perdicinae) with reference to their forage in gut content. It is the first helminthological and epidemiological study in Sindh, Pakistan. At present, a total of 20 birds were examined, out of which 17 were found infected with cestode larvae of two species of genus Cotugnia and genus Raillietina, one species of trematode, Prosthogonimus potentially new species; one new species of acanthocephalan, Mediorhynchus francolinae sp. nov.; one species of nematode, Subulura brumpti (López-Neyra, 1922) were recovered, with new host records. The forage content and comparative incidence of helminth species were also observed and discussed in the current study, which revealed the high prevalence of infection in grey francolins than that of black francolin. The mean intensity of infection relative to the forage in guts of hosts was found significant (P<0.05), observed 9.14±1.65 in black francolins than in grey francolins (5.8±0.51). The parasitic abundance was compared using Fisher's Exact Test, which showed no significant difference between cestodes and nematodes in the two hosts, however trematode and acanthocephalan was found only in grey francolin. The parasitic frequencies along with the confidence intervals were recorded higher in black francolins by cestodes and nematodes than the black francolins during the present study.