Abundance and Seasonal Variations of Tabanids in Southern Trarza (Mauritania)<sup>a</sup>

Dia, Mamadou Lamine; Elsen, P; Cuisance, Dominique; Diop, Cheikh; Thiam, A.; Chollet, J.Y.

doi:10.1111/j.1749-6632.1998.tb11096.x

Cited by 13 publications

(15 citation statements)

References 11 publications

(4 reference statements)

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“…Similar observations were seen in different countries like Burkina Faso and Mauritania (Dia et al, 1998;Acapovi et al, 2001). Generally the apparent density of tsetse flies and other biting flies were significantly higher during the late rainy season as compared to the dry season in the present survey.…”

Section: Discussionsupporting

confidence: 80%

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Denu¹,

Asfaw²,

HailuTolossa³

2012

Ethiop. Vet. J.

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A study was carried out from September 2007 to March 2008 to determine the prevalence of trypanosomosis and the apparent tsetse densities and other biting flies as well as to evaluate community awareness about the disease and its control method in three districts of west Shoa zone in Oromia. From a total of 1200 animals examined, (600 in the late rainy and 600 in the dry seasons) the prevalence of trypanosomosis was found to be 33.5% and 17.83% in the late rainy and dry seasons, respectively. There was a statistically significant difference in prevalence was observed (p<0.05) between the two seasons. The mean PCV values of the parasitaemic and aparasitaemic animals during the late rainy season were 20.19% and 26.75% while during the dry season 18.75% and 23.97%, respectively. A fly-survey was conducted by using 90 monoconical pyramidal traps and revealed that three tsetse species, namely G. pallidipes, G. m. submorsitans and G. f. fuscipes were found along with other biting flies (tabanids and muscids) in the study area. The apparent densities of tsetse flies were significantly different (p<0.05) during the two study. The overall apparent densities of tsetse flies were found to be 2.87 fly/trap/day (95% CI= 1.04-5.77%) and 1.26 flay/tap/day (95% CI= 1.17-2.07%) in late rainy and dry seasons, respectively. G. f. fuscipes and G. pallidipes appear to be the dominant tsetse species in the study area. The proportion of female tsetse flies caught was higher in both seasons. The apparent density of biting flies (tabanids and muscids) was significantly higher (p<0.05) in the late rainy season (1.49 fly/trap/day, 18.66 fly/trap/day) than the dry season (0.77 fly/trap/day, 15.04 fly/trap/day) respectively. Poor infrastructure, absence of trypanosomosis and vector control activities in the area have worsen the situation and hence require professional intervention.

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Section: Discussionsupporting

confidence: 80%

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Denu¹,

Asfaw²,

HailuTolossa³

2012

Ethiop. Vet. J.

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“…Similar observations were seen in diff erent countries like Nigeria, Burkina Faso and Mauritania (Leclercq, 1986 ;Dia et al, 1998 ;Acapovi et al, 2001 ).…”

Section: Discussionsupporting

confidence: 71%

Bovine trypanosomosis in Gimbi district of Western Oromia, Ethiopia

et al. 2010

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A cross-sectional study was carried out from March to May 2014 to determine the prevalence of bovine trypanosomosis in Gimbi district. The method employed during the study was buffy coat technique for parasitological study. Blood samples were collected from ear vein of 445 heads of cattle to assess trypanosome species. The overall prevalence of the disease was 4.9 % and was vary in different peasant associations (PAs) of the study area with 2.7 %, 11.8 % and 0 % in Tole, Jogir and Inango Denbeli, respectively. Out of 22 infected animals 63.64 % cattle were found to be infected by T. congolense, (31.8 %) T. vivax, and (4.55 %) mixed parasites (T. congolense and T. vivax).The results showed that, T. congolense was the most prevalent in the study areas and followed by mixed parasites. There was statistically significant difference (p<0.05) in distribution of trypanosoma infection. The prevalence of disease recorded among age groups was 0 %, 4.7 % and 5.5 % in calves (<3years), youngs (3-9 years) and adults (>9 years), respectively. The results also showed the prevalence between sexes was 4.95 % (male) and 4.93 % (female). The infection rates between different ages and sexes of animals showed no significant difference. The mean PCV value of parasitaemic animals was 22.78 %, of aparasitaemic animals was 26.51 % and the overall mean PCV value was 24.65 %. Analysis of the mean PCV values of parasitaemic and aparasitaemic animals showed statistically significant difference (p<0.05). The results of the study suggested that trypanosomosis in the area was decreasing. However, due to its impact on the livestock, an appropriate tsetse control methods should be expanded to reach tsetse infested area in a sustainable manner to alleviate the problem of trypanosomosis in the area.

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“…agrestis) was markedly abundant in our area, where it has been confirmed as a very good mechanical vector for T. vivax and even T. congolense (Desquesnes et al, 2009). It was also predominant in bipyramidal trap catches in Mauritania (Dia et al, 1998) and in catches in Ngu and monoconical traps baited with octenol and acetone in Ethiopia (Sinshaw et al, 2006). However, the genus Tabanus predominated in Ivory Coast (especially T. taeniola) (Acapovi et al, 2001) and Nigeria (especially Tabanus biguttatus) (Ahmed et al, 2005).…”

Section: Influence Of Site On Species Diversity and Abundancementioning

confidence: 84%

Spatio-temporal distribution of tsetse and other biting flies in the Mouhoun River basin, Burkina Faso

Koné

N’Goran

Sidibé

et al. 2010

Medical and Veterinary Entomology

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In the Mouhoun River basin, Burkina Faso, the main vectors of African animal trypanosomoses are Glossina palpalis gambiensis Vanderplank and Glossina tachinoides Westwood (Diptera: Glossinidae), both of which are riverine tsetse species. The aim of our study was to understand the impact of landscape anthropogenic changes on the seasonal dynamics of vectors and associated trypanosomosis risk. Three sites were selected on the basis of the level of disturbance of tsetse habitats and predominant tsetse species: disturbed (Boromo, for G. tachinoides) and half-disturbed (Douroula for G. tachinoides and Kadomba for G. p. gambiensis). At each of these sites, seasonal variations in the apparent densities of tsetse and mechanical vectors and tsetse infection rates were monitored over 17 months. Tsetse densities differed significantly between sites and seasons. Of 5613 captured tsetse, 1897 were dissected; 34 of these were found to be infected with trypanosomes. The most frequent infection was Trypanosoma vivax (1.4%), followed by Trypanosoma congolense (0.3%) and Trypanosoma brucei (0.05%). The mean physiological age of 703 tsetse females was investigated to better characterize the transmission risk. Despite the environmental changes, it appeared that tsetse lived long enough to transmit trypanosomes, especially in half-disturbed landscapes. A total of 3021 other biting flies from 15 species (mainly Tabanidae and Stomoxyinae) were also caught: their densities also differed significantly among sites and seasons. Their relative importance regarding trypanosome transmission is discussed; the trypanosomosis risk in cattle was similar at all sites despite very low tsetse densities (but high mechanical vector densities) in one of them.

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Abundance and Seasonal Variations of Tabanids in Southern Trarza (Mauritania)^a

Cited by 13 publications

References 11 publications

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Bovine trypanosomosis in Gimbi district of Western Oromia, Ethiopia

Spatio-temporal distribution of tsetse and other biting flies in the Mouhoun River basin, Burkina Faso

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Abundance and Seasonal Variations of Tabanids in Southern Trarza (Mauritania)a

Cited by 13 publications

References 11 publications

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Bovine trypanosomosis in three districts of Southwest Oromia, Ethiopia

Bovine trypanosomosis in Gimbi district of Western Oromia, Ethiopia

Spatio-temporal distribution of tsetse and other biting flies in the Mouhoun River basin, Burkina Faso

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About

Abundance and Seasonal Variations of Tabanids in Southern Trarza (Mauritania)^a