Patterns of tsetse abundance and trypanosome infection rates among habitats of surveyed villages in Maasai steppe of northern Tanzania  

作　　者：Anibariki Ngonyoka Paul S.Gwakisa Anna B.Estes Linda P.Salekwa Happiness J.Nnko Peter J.Hudson Isabella M.Cattadori 

机构地区：[1]School of Life Sciences and Bioengineering,Nelson Mandela African Institution of Science and Technology,P.O.Box 447,Arusha,Tanzania [2]Genome Sciences Center,Department of Microbiology,Parasitology and Immunology.College of Veterinary and Medical Sciences,Sokoine University of Agriculture,Morogoro,Tanzania [3]Centre for Infectious Disease Dynamics,The Huck Institutes of the Life Sciences,The Pennsylvania State University,University Park,USA [4]Department of Conservation Biology,School of Biological Sciences,University of Dodoma,Dodoma,Tanzania [5]Department of Geography and Environmental studies,University of Dodoma,Dodoma,Tanzania

出　　处：《Infectious Diseases of Poverty》2017年第1期1111-1122,共12页贫困所致传染病（英文）

基　　金：This research received financial support from the project“Predicting vulnerability and improving resilience of the Maasai communities to vector borne infections:An Eco-health approach in Maasai steppe ecosystem,based at Nelson Mandela African Institute of Science and Technology(NM-AIST)”.

摘　　要：Background:Changes of land cover modify the characteristics of habitat,host-vector interaction and consequently infection rates of disease causing agents.In this paper,we report variations in tsetse distribution patterns,abundance and infection rates in relation to habitat types and age in the Maasai Steppe of northern Tanzania.In Africa,Tsetse-transmitted trypanosomiasis negatively impacted human life where about 40 million people are at risk of contracting the disease with dramatic socio-economical consequences,for instance,loss of livestock,animal productivity,and manpower.Methods:We trapped tsetse flies in dry and wet seasons between October 2014 and May 2015 in selected habitats across four villages:Emboreet,Loiborsireet,Kimotorok and Oltukai adjacent to protected areas.Data collected include number and species of tsetse flies caught in baited traps,PCR identification of trypanosome species and extraction of monitored Normalized Difference Vegetation Index(NDVI)data from Moderate Resolution Imaging Spectrometer(MODIS).Results:Our findings demonstrate the variation of tsetse fly species abundance and infection rates among habitats in surveyed villages in relation to NDVI and host abundance.Results have shown higher tsetse fly abundance in Acacia-swampy ecotone and riverine habitats for Emboreet and other villages,respectively.Tsetse abundance was inconsistent among habitats in different villages.Emboreet was highly infested with Glossina swynnertoni(68%)in ecotone and swampy habitats followed by G.morsitans(28%)and G.pallidipes(4%)in riverine habitat.In the remaining villages,the dominant tsetse fly species by 95%was G.pallidipes in all habitats.Trypanosoma vivax was the most prevalent species in all infected flies(95%)with few observations of co-infections(with T.congolense or T.brucei).Conclusions:The findings of this study provide a framework to mapping hotspots of tsetse infestation and trypanosomiasis infection and enhance the communities to plan for effective control of trypanosomiasis.

关 键 词：Habitat variability Tsetse fly Host availability Infection rate TRYPANOSOMES 

分 类 号：O17[理学—数学]