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Prevalence of Haemoparasites in Village Weaver (Ploceus cucullatus) in Ibadan, Nigeria
Authors: Omonona Abosede Olayemi , Afusat Jagun Jubril and Adewole Augustine Adekola
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Village weavers (Ploceus cucullatus) are ubiquitous passerine birds found in Nigeria. Researches on avian haemoparasites in domestic and wild birds in Nigeria have been receiving considerable attention over the years. In recent studies, the commonly reported haemoparasites include Haemoproteus sp, Plasmodium sp., Leucocytozoon, Hepatozoon and nematode microfilariae. These haemoparasites have been associated with several pathologic changes and diseases in affected birds. However, there is dearth of information on the prevalence of haemoparasites associated with village weaver in Nigeria. This present study evaluated the prevalence of haemoparasites in village weavers birds found in Ibadan, Nigeria and the associated haematological changes. 30 weaver birds were captured from the suburb of Ibadan, Oyo State, Nigeria. The buffy coat smears of the birds were made to ascertain the prevalence of haemoparasites using light microscopy to determine the morphological characteristics of the haemoparasites observed. The morphological characteristics of the haemoparasites observed were consistent with Haemoproteus spp., Leucocytozoon spp., Plasmodium spp., and microfilariae. Out of the total number of the village weavers sampled, 22 (73.33%) had one or more haemoparasites. Haemoproteus spp was observed in 19 (63.33%) birds, microfilariae was seen in 10 (33.33%) while 7 (23.33%) had Leucocytozoon spp with Plasmodium spp. in 5 (16.67%), being the least prevalent in this study. The co-infection with different haemoparasites was significant (p <0.05) which indicated an increased relative risk of a superimposed haemoparasite infection in already infected birds. The erythrocyte parameters and indices (PCV, RBC, MCV, MCH and MCHC) were slightly higher in the uninfected weaver birds than in the haemoparasite infected population.