Prevalence and incidence of bovine trypanosomosis on the Adamaoua plateau in Cameroon 10 years after the tsetse eradication campaign

Abdoulmoumini, Mamoudou; Zoli, A; Mbahin, N.; Tanenbe, C.; Bourdanne,; Clausen, P.H.; Marcotty, Tanguy; Bossche, Peter Van Den; Geerts, S.

doi:10.1016/j.vetpar.2006.06.033

Cited by 33 publications

(37 citation statements)

References 3 publications

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“…The IAA was highest in areas close to game reserves. A previous study found that, independent of the sampling method, the overall monthly mean IAA of tsetse flies in the valley was highest during the rainy season, increasing rapidly at the beginning of the rainy season and peaking towards its end, resulting in substantial trypanosomiasis challenge at this time of year (Mamoudou et al, 2006). However, the sampling locations in the valley in our study resulted in the observation of opposite trends in mean monthly IAA.…”

Section: Discussioncontrasting

confidence: 54%

“…At the end of 1994, a preliminary evaluation of the tsetse control activities in Adamaoua showed that the eradication campaign on the plateau had not been 100% effective and that some pockets of G. m. submorsitans and G. f. fuscipes had survived . A study carried out in 2004 indicated a low trypanosomiasis prevalence and incidence on the plateau (Mamoudou et al, 2006). The present study was aimed at determining tsetse distribution in the valley and in the Faro and Deo Division of the Adamaoua Plateau 10 years after the aerial spraying campaign of 1994.…”

Section: Introductionmentioning

confidence: 96%

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Seasonal distribution and abundance of tsetse flies (Glossina spp.) in the Faro and Deo Division of the Adamaoua Plateau in Cameroon

Abdoulmoumini

Zoli

Hamadama

et al. 2008

Medical Vet Entomology

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Ten years after the large-scale tsetse control campaigns in the important cattle rearing areas of the Faro and Deo Division of the Adamaoua Plateau in Cameroon, the seasonal distribution and abundance of tsetse flies (Glossina spp.) were determined. During a period of 12 consecutive months (January-December 2005), the tsetse population was monitored along four trap transects consisting of a total of 32 traps and two flyround transects traversing the study area, which comprised the tsetse-infested valley, a buffer zone and the supposedly tsetse-free plateau. Throughout the study period, a total of 2195 Glossina morsitans submorsitans and 23 Glossina tachinoides were captured in the traps and 1007 G. m. submorsitans (78.8% male flies) were captured along the flyround transects. All G. tachinoides and almost all G. m. submorsitans were captured in the valley. Five G. m. submorsitans were captured in traps located in the buffer zone, whereas no flies were captured in traps located on the plateau. The index of apparent abundance (IAA) of G. m. submorsitans was substantially higher in the areas close to game reserves. In the remaining part of the valley, where wildlife is scarce and cattle are present during transhumance (dry season), the IAA of tsetse was substantially lower. In this part of the valley, the abundance of tsetse seemed to be associated with the presence of cattle, with the highest IAA during transhumance when cattle are present and the lowest apparent abundance during the rainy season when cattle have moved to the plateau. It is concluded that the distribution of tsetse in a large part of the valley undergoes substantial seasonal changes depending on the presence or absence of cattle. The repercussions of those findings for the control of tsetse in the valley and the probability of reinvasion of the plateau are discussed.

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Section: Discussioncontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 96%

Seasonal distribution and abundance of tsetse flies (Glossina spp.) in the Faro and Deo Division of the Adamaoua Plateau in Cameroon

Abdoulmoumini

Zoli

Hamadama

et al. 2008

Medical Vet Entomology

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“…Consequently, morphometric analysis can be used to differenttiate Glossina m. submorsistans from the Adamawa Plateau of Cameroon and this technique can reveal differences between vectors of medical and veterinary importance. The geometric morphometrics technique allows a more sensitive appraisal of the relationships between groups than genetic techniques involving microsatellites [26,33]. Geometric morphometrics techniques are useful in evaluating the micro-evolutionary changes occurring during phenotypic evolution in tsetse flies, especially in developing countries where laboratories to perform genetic analyses are lacking.…”

Section: Resultsmentioning

confidence: 99%

Lack of evidence for sufficiently isolated populations of Glossina morsitans submorsitans on the Adamawa Plateau of Cameroon following geometric morphometric analysis

Achukwi¹,

Gillingwater²,

Nlôga³

et al. 2013

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Trypanosomosis remains the number one killer of livestock in spite of efforts made to eradicate tsetse flies in the Adamawa plateau of Cameroon. Acetone-baited Laveissière type biconical traps were pitched at 100 meter intervals in strategic geo-referenced positions in various ecological niches of the landscape for 5 consecutive days in selected villages in Mayo Rey, Mbere, Vina and Faro et Deo divisions. All 493 tsetse flies captured in sites other than Mboula were G. morsitans submositans. Measurement of different morphometric characters on the wings of each individual fly was undertaken using the Du Jardin package. The data was processed and analysed by "Permutaciones, Analisis Discriminante (PAD)" and "Bootstraps, Analisis en Componentes principales". The three major sampling sites on the plateau yielded similar results as demonstrated by the neighbour joining tree of Mahalanobis distances but tests using PAD showed the differences between group means to be significant (P < 0.05) even when the same number of flies was used. Mixing of tsetse populations from the northern lowlands and those on the plateau and Koutine plain could not be ruled out. These preliminary findings suggest that the flies are not from isolated populations and should be considered as populations frequently exchanging migrants. However, molecular genetics techniques are necessary in addition to morphometric analysis to reach more definitive conclusions.

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“…Even though, from Dale Wabera district of Kellem Wollega zone reported lower prevalence (2.86%) of trypanosomosis [18]. These differences were due to ecological differences and seasonal variations of study areas [19,20].…”

Section: Discussionmentioning

confidence: 83%

“…[14] in Guto Gida (20.23%) district, Begna et al [15] in Humbo (20.2%) district, Tola et al [16] in Chora (19.02%) district, Kassaye [17] in Sayonole (20.86%) district, Kassaye and Tsegaye [12] in Dale Wabera (20.9%) and Dale sedi (20.3%) districts and [23] in western Oromia (22.88%). Difference in aneamia status in trypanosome infected cattle was probably due to discrepancy in ecology [20], nutritional status [24], animal breed [25], season of the study [19], tsetse control and trypanocidal drug utilization level [26] and/or diagnostic method employed [27,28].…”

Section: Discussionmentioning

confidence: 99%

Identification of Fungi from Police Dogs in Borri, Khartoum, Sudan

Ahmed¹

2017

Austin J Vet Sci & Anim Husb

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The cross-sectional study was carried out from January to May, 2015 to assess prevalence of bovine trypanosomosis and apparent density of its vectors in Yayo district Iluababora zone of western Oromia. In current study 408 cattle were randomly selected for the study of bovine trypanosomosis prevalence in the district. Blood sample were collected from ear vein of cattle drawn into heparinized capillary tube then centrifuged and buffy coat techniques and thin blood smear were used to identify species of trypanosomes. This revealed that overall prevalence 7.4%, 95% CI: 5.1 -10.0% with the highest rate of infection of T. congolonse (66.7%) than T. vivax 8(26.7%) and mixed infection 2(6.7%). Prevalence of trypanosomosis higher in female cattle 8%, 95% CI: 5.0 -11.6%, old cattle 25%, 95% CI: 0.0 -62.5% and poor body condition score cattle 9.3%, 95% CI: 3.7 -14.8% and they were insignificantly associated with the bovine trypanosomosis prevalence. Bovine trypanosomosis prevalence was higher in aneamic 26(7.54%), poor body condition score 10(9.26%), female 21(8.11%) and old cattle 28(7.49%) and all the risk factors are insignificantly associated with trypanosomosis prevalence. The mean PCV of the infected cattle, male cattle and medium body condition score cattle were 17.767%, 95% CI: 15.96 -19.58%, 20.274%, 95% CI: 19.78 -20.77%, 20.09%, 95% CI: 19.53 -20.65% lower than their perspective, respectively. In study 45 monopyramidal traps used to assess apparent density of tsetse flies and other biting flies in the district were G. pallidipes and G. f. fuscipes caught with overall apparent density of 142.41 FTD and other biting flies Tabanus, Stomoxys and Heamatopota. This indicates that how much tsetse flies and trypanosomosis challenge the livelihood of farmers. Therefore, chemoprophylaxis and prophylactics techniques and vector control techniques should be implemented.

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Prevalence and incidence of bovine trypanosomosis on the Adamaoua plateau in Cameroon 10 years after the tsetse eradication campaign

Cited by 33 publications

References 3 publications

Seasonal distribution and abundance of tsetse flies (Glossina spp.) in the Faro and Deo Division of the Adamaoua Plateau in Cameroon

Seasonal distribution and abundance of tsetse flies (Glossina spp.) in the Faro and Deo Division of the Adamaoua Plateau in Cameroon

Lack of evidence for sufficiently isolated populations of Glossina morsitans submorsitans on the Adamawa Plateau of Cameroon following geometric morphometric analysis

Identification of Fungi from Police Dogs in Borri, Khartoum, Sudan

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