Les tiques de la famille Ixodidae comme réservoir d'arbovirus en République de Guinée. I. Faune et écologie des tiques

Konstantinov, O. K.; Balde, Mamadou Cellou; Tchounina, L. M.; Mourzin, S. V.; Попов, Н. В.; Tchebotarev, A. N.

doi:10.19182/remvt.8902

Cited by 6 publications

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“…On the other hand, the strategic/selective acaricide application scheme, which combines efficiency, low cost and apparently profitability, may justify, even in absence of losses due to tick‐borne diseases, the use of chemical for controlling ticks to increase meat production of indigenous Gambian traditionally managed cattle. This practice might be extended also to other areas of the sub‐humid and humid West African region, considering the homogeneity of species‐specific tick population dynamics ( Konstantinov et al . 1990 ; Gueye et al .…”

Section: Discussionmentioning

confidence: 99%

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Efficiency and cost of strategic use of acaricide for tick control in N’Dama cattle in The Gambia

Mattioli

Jaitner

1999

Medical Vet Entomology

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The efficiency of strategic and strategic/selective applications of flumethrin spray formulation for controlling ticks were assessed, respectively, in two groups of fourteen N'Dama cattle (Group S and Group S/S) by comparison of the number of feeding ticks with thirteen untreated N'Dama cattle (Group U) over a period of 11 months (June 1996 to April 1997). During the expected peak of tick abundance, acaricide was applied fortnightly on the whole body in animals in Group S and only on the most infested body areas in cattle in Group S/S. Weight changes and skin lesions, directly associated with tick attachment, were recorded in cattle in the three groups. The costs of the two tick control schemes were estimated. Maximum level of ticks, all species together, feeding on cattle was observed in the rainy season. Both in Group S/S and Group S, cattle carried a lower (P < 0.001) number of feeding ticks than animals in Group U over the whole study period. Percentage of tick control, over the entire period of tick investigation, was satisfactory in both acaricide-treated groups, reaching 61.2 and 75.2% in Groups S/S and S, respectively. However, the proportion of control varied according to tick species or genus. Significantly lower prevalence of skin lesions was observed on the ano-genital and udder region in cattle in Group S/S (P < 0.05) and Group S (P < 0.01) in comparison with cattle in Group U. Mean amount of acaricide solution used and relative estimated cost of treatment in cattle in Group S/S were, respectively, 25- and 14-fold lower than those in cattle in Group S. At the end of the study, animals in Groups S/S and S were, respectively, 7.2 and 15.9 kg heavier than animals in Group U. The difference was statistically significant (P < 0.02) only between Groups S and U. However, the efficiency, low cost and derived benefits of the strategic/selective acaricide application scheme indicated that it might be the most cost effective.

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Section: Discussionmentioning

confidence: 99%

“…In vast areas of the Western African sub‐humid and humid region, tick infestation concentrates mainly in the wet season, i.e. June to November ( Konstantinov et al . 1990 ; Gueye et al .…”

Section: Introductionmentioning

confidence: 99%

Efficiency and cost of strategic use of acaricide for tick control in N’Dama cattle in The Gambia

Mattioli

Jaitner

1999

Medical Vet Entomology

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Rhipicephalus microplus and its vector-borne haemoparasites in Guinea: further species expansion in West Africa

et al. 2021

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Rhipicephalus microplus is an ixodid tick with a pantropical distribution that represents a serious threat to livestock. West Africa was free of this tick until 2007, when its introduction into Benin was reported. Shortly thereafter, the further invasion of this tick into West African countries was demonstrated. In this paper, we describe the first detection of R. microplus in Guinea and list the vector-borne haemoparasites that were detected in the invader and indigenous Boophilus species.In 2018, we conducted a small-scale survey of ticks infesting cattle in three administrative regions of Guinea: N`Zerekore, Faranah, and Kankan. The tick species were identified by examining their morphological characteristics and by sequencing their COI gene and ITS-2 gene fragments. R. microplus was found in each studied region. In the ticks, we found DNA of Babesia bigemina, Anaplasma marginale, Anaplasma platys, and Ehrlichia spp. The results of this study indicate that R. microplus was introduced into Guinea with cows from Mali and/or Ivory Coast.

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A note on Hyalomma nitidum, its distribution and its hosts

Tomassone

Camicas²,

Meneghi

et al. 2005

Exp Appl Acarol

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The paper summarises the morphological characteristics, the known geographical distribution and hosts of Hyalomma nitidum, a tick which has never been properly characterised. H. nitidum was first described in Cameroon in 1919, long considered as a synonym of Hyalomma truncatum and recognised as a separate and valid species only since the early 1970s. H. nitidum occurs from Senegal to the Central African Republic in more humid conditions than H. truncatum, roughly to the south of the isohyet of 900 mm. Adults are parasitic on various wild and domestic ungulates, on which immatures have not been found. Nymphs, identified after moulting to adults, have been found on a hare, and tentatively identified larvae and nymphs of this species have also been collected on hare as well as on a zebra mouse. The tick has been found infected with the virus of Crimean-Congo haemorrhagic fever, so far no other disease associations are known.

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Les tiques de la famille Ixodidae comme réservoir d'arbovirus en République de Guinée. I. Faune et écologie des tiques

Cited by 6 publications

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Efficiency and cost of strategic use of acaricide for tick control in N’Dama cattle in The Gambia

Efficiency and cost of strategic use of acaricide for tick control in N’Dama cattle in The Gambia

Rhipicephalus microplus and its vector-borne haemoparasites in Guinea: further species expansion in West Africa

A note on Hyalomma nitidum, its distribution and its hosts

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