Ethnobotanical Survey of Some Medicinal Plants Used Against Trypanosomiasis in Zuru Local Government Area, Kebbi State, Nigeria

The lelna people of Zuru, Kebbi State, North-western Nigeria, predominantly prefer the use of medicinal plants as viable treatments against different ailments, including trypanosomiasis, as the area is endowed with viable medicinal plants, despite a gradual decrease in the traditional knowledge of usage. This study seeks to document medicinal plants used for the treatment of trypanosomiasis among lelna people. A survey was conducted from October 2021 to January 2022 among the lelna tribes. Information was collected from 104 respondents using the purposive sampling technique and interviews using semi-structured questionnaires. Descriptive statistics were used to present the data. The survey documented 34 medicinal plant species belonging to 31 genera and 20 families. The highest fidelity level and relative frequency of citation of commonly mentioned plants were observed for Rogeria adenophylla J. Gay and Ricinus communis Linn. Fabaceae family, represented by 8 species, appears to be the most commonly utilized family. The most frequently cited species were wild-derived trees or shrubs and most herbal remedies were mainly prepared by decoction (45%) and administered orally (100%). Leaves (39%) and stem bark (16%) accounted for the highest proportion of the biological parts of plants used in remedy preparation. Parasitic diseases presented the highest informant consensus factor (ICF = 0.68) among the cited species. This study has documented potential traditional medicinal plant species for treating trypanosomiasis in Zuru, Kebbi State. Pharmacological studies to identify the active principles of the cited species are required to validate their uses and unveil new potential trypanoside agents.