Bovine trypanosomosis and Glossina distribution in selected areas of southern part of Rift Valley, Ethiopia

Sheferaw, Desie; Belay, Berhanu; Asrade, Biruhtesfa; Abera, Mesele; Tusse, Turist; Fikadu, Amha; Denbarga, Yifat; Gona, Zemedkun; Regassa, Alemayehu; Moje, Nebyou; Kussito, Engida; Mekibib, Berhanu; Asefa, Teshome; Woldesenbet, Zerihun

doi:10.1016/j.actatropica.2015.11.002

Cited by 27 publications

(16 citation statements)

References 4 publications

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“…But the finding is not in line with the report by Sheferaw et al (2015) 0.47FTD and Nigatuwa and Wondimagegnehu (2016) (0.067FTD). This difference may be due to difference in geographical area, season of the year and Muturi et al (2000) which reported about 1.4 FTD in the southern rift valley of Ethiopia and the apparent tsetse fly density obtained in the present study was 2.86 and 26.27 flies/trap/day in Masha Morka and Kodo Wono, respectively; this high reduction of mean apparent density of the tsetse flies at Masha Morka kebele is because of the presence of different control measure and release of sterile male tsetse flies(the application of SIT) undertaken in the area.…”

Section: Discussioncontrasting

confidence: 70%

Assessing the impact of Trypanosoma spp. in cattle and its vector infestation in controlled and uncontrolled Kebeles in Kucha Wereda, Southern Ethiopia

Abayneh¹,

Tadesse²

2019

J. Vet. Med. Anim. Health

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This study was undertaken in Kucha Woreda to assess the impact of Trypanosoma spp. on cattle and its vector infestation rate using cross-sectional study design. The study was done from November 2016 to June 2017 on 384 local cattle using buffy coat method and tsetse fly density was seen in intervention area with non-controlled area. The overall infection rate 4.17% (N=16) showed an insignificant (p>0.05) difference of prevalence rate in animal with different body condition score. Medium body condition animals were the most affected animal group. The study also revealed that adult (4.22%) and male (6.12%) animals are relatively susceptible to bovine trypanosomosis than young (4.00%) and female (2.95%) animals. Animals with PCV value of 21.56 and 26.32% were found to be parasitaemic and aparasitemic cattle, respectively. In both research site, 20 NGU trap was deployed to see the vector infestation and only Glossina pallidipes was found together with mechanical vectors. 2.86 and 26.27 FTD were found in both controlled and uncontrolled kebele, respectively, this big difference resulted in uncontrolled Kodo Wono kebele due to absence of intervention by Arba Minch tsetse fly suppression site. The total tsetse fly infestation rate in the area was found to be 14.67 FTD. Due to its adverse effect on cattle production, parasitic and vector control and prevention mechanism should be in place especially in those kebele neighbors to the controlled kebele.

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Section: Discussioncontrasting

confidence: 70%

Assessing the impact of Trypanosoma spp. in cattle and its vector infestation in controlled and uncontrolled Kebeles in Kucha Wereda, Southern Ethiopia

Abayneh¹,

Tadesse²

2019

J. Vet. Med. Anim. Health

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“…This species is a highly prevalent livestock pathogen across the tsetse belt (cyclical transmission) [2–5], as well as in tsetse-free areas [6, 7]. Mechanical transmission by other biting flies allows the spread of T. vivax across Africa and South America (SA) [8, 9].…”

Section: Introductionmentioning

confidence: 99%

New insights from Gorongosa National Park and Niassa National Reserve of Mozambique increasing the genetic diversity of Trypanosoma vivax and Trypanosoma vivax-like in tsetse flies, wild ungulates and livestock from East Africa

et al. 2017

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Background Trypanosoma (Duttonella) vivax is a major pathogen of livestock in Africa and South America (SA), and genetic studies limited to small sampling suggest greater diversity in East Africa (EA) compared to both West Africa (WA) and SA.MethodsMultidimensional scaling and phylogenetic analyses of 112 sequences of the glycosomal glyceraldehyde phosphate dehydrogenase (gGAPDH) gene and 263 sequences of the internal transcribed spacer of rDNA (ITS rDNA) were performed to compare trypanosomes from tsetse flies from Gorongosa National Park and Niassa National Reserve of Mozambique (MZ), wild ungulates and livestock from EA, and livestock isolates from WA and SA.ResultsMultidimensional scaling (MDS) supported Tvv (T. vivax) and TvL (T. vivax-like) evolutionary lineages: 1) Tvv comprises two main groups, TvvA/B (all SA and WA isolates plus some isolates from EA) and TvvC/D (exclusively from EA). The network revealed five ITS-genotypes within Tvv: Tvv1 (WA/EA isolates), Tvv2 (SA) and Tvv3–5 (EA). EA genotypes of Tvv ranged from highly related to largely different from WA/SA genotypes. 2) TvL comprises two gGAPDH-groups formed exclusively by EA sequences, TvLA (Tanzania/Kenya) and TvLB-D (MZ). This lineage contains more than 11 ITS-genotypes, seven forming the lineage TvL-Gorongosa that diverged from T. vivax Y486 enough to be identified as another species of the subgenus Duttonella. While gGAPDH sequences were fundamental for classification at the subgenus, major evolutionary lineages and species levels, ITS rDNA sequences permitted identification of known and novel genotypes.ConclusionsOur results corroborate a remarkable diversity of Duttonella trypanosomes in EA, especially in wildlife conservation areas, compared to the moderate diversity in WA. Surveys in wilderness areas in WA may reveal greater diversity. Biogeographical and phylogenetic data point to EA as the place of origin, diversification and spread of Duttonella trypanosomes across Africa, providing relevant insights towards the understanding of T. vivax evolutionary history.Electronic supplementary materialThe online version of this article (doi:10.1186/s13071-017-2241-2) contains supplementary material, which is available to authorized users.

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“…Trypanosomosis was ranked as the most important livestock disease in the area. Recent studies conducted in Dawro zone [8,9] have also indicated that trypanosomosis is a major problem in the study area. Similar fi ndings have also been documented by other studies [18,19] in trypanosomosis infected region of Kenya and Tanzania, respectively.…”

Section: Knowledge Perception and Practices Of The Community On Animmentioning

confidence: 90%

“…Triangulation process on 50 cattle clinically suspected of trypanosomosis by focus group discussants has shown 12% (6/50) of the animals were positive for trypanosomosis using the buffy coat technique which were confi rmed by Giemsa (14)(15)(16)(17)(18)(19) 13 (11)(12)(13)(14)(15)(16) Livestock population 7 (5)(6)(7)(8)(9)(10) 23 (20)(21)(22)(23)(24)(25) 13 (10)(11)(12)(13)(14)(15) 17 (15)(16)(17)(18)(19)(20) Forest covered area 17 (16)(17)(18)(19)(20) 13 (10)(11)(12)(13)(14) 15 (14)(15)(16) 15 (14)…”

Section: Knowledge Perception and Practices Of The Community On Animmentioning

confidence: 99%

“…Human activity due to dam construction has changed the natural fauna and fl ora and consequently human settlement and livestock distribution both in areas surrounding the dam and along the banks of the Omo River on which the dam was constructed. The area is also known to have animal trypanosomosis [7][8][9] since long time. The distribution of this disease is expected to change with the negative or positive changes in the tsetse vector distribution as a result of the change in the ecology of the area which is caused by the presence of the dam.…”

Section: Introductionmentioning

confidence: 99%

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The impact of Gibe III hydroelectric dam on the situation of livestock diseases with particular emphasis on bovine trypanosomosis in Southern Ethiopia

Mekuria¹,

Ashenafi²,

Kebede³

et al. 2020

Int J Vet Sci Res

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This study was initiated to explore the impact of Gibe III dam on the situation of livestock diseases with emphasis on trypanosomosis in upstream and downstream districts. Focus group discussions with 15 groups each with 6-20 members were conducted using participatory research approach. Data were collected through simple ranking, proportional piling and matrix scoring. Level of agreement among groups analyzed was determined by Kendell's coeffi cient concordance (W). Proportional piling revealed that bovine trypanosomosis ranked fi rst followed by blackleg and anthrax. Study participants identifi ed livestock diseases by name and described the most salient features of each disease. Community perception on clinical signs, disease transmission, seasonality, of tsetse vectors, socioeconomic impacts, control methods commonly of trypanosomosis was in a good agreement (W > 0.38***; p<0.001). Livestock disease outbreaks and the challenge from tsetse and trypanosomosis were perceived signifi cantly reduced after dam construction in the upstream villages whereas dam construction and the artifi cial lake created thereof had little impact on the situation of trypanosomosis and the tsetse population in the downstream villages along the Omo river. Therefore, any tsetse and trypanosomosis control program should take into account the basic differences in the two sites and accordingly provide customized services.

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Bovine trypanosomosis and Glossina distribution in selected areas of southern part of Rift Valley, Ethiopia

Cited by 27 publications

References 4 publications

Assessing the impact of Trypanosoma spp. in cattle and its vector infestation in controlled and uncontrolled Kebeles in Kucha Wereda, Southern Ethiopia

Assessing the impact of Trypanosoma spp. in cattle and its vector infestation in controlled and uncontrolled Kebeles in Kucha Wereda, Southern Ethiopia

New insights from Gorongosa National Park and Niassa National Reserve of Mozambique increasing the genetic diversity of Trypanosoma vivax and Trypanosoma vivax-like in tsetse flies, wild ungulates and livestock from East Africa

The impact of Gibe III hydroelectric dam on the situation of livestock diseases with particular emphasis on bovine trypanosomosis in Southern Ethiopia

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