An evaluation of insecticide-impregnated screens against Glossina austeni (Diptera: Glossinidae) on Unguja Island of Zanzibar

Vreysen, Marc J. B.; Saleh, Khalfan M.; Khamis, Issa S.; Mramba, Furaha

doi:10.1017/s1742758400016611

Cited by 4 publications

(5 citation statements)

References 12 publications

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“…Sticky traps of various design and colour combinations have been shown to be useful for the monitoring of G. austeni on Unguja Island, Zanzibar, throughout a tsetse control/ eradication trial (Vreysen et al, 1999a(Vreysen et al, , b, 2000aSaleh et al, 2001;) and other population ecology studies (Vreysen & Khamis, 1999). These traps were also used to survey G. brevipalpis on Mafia Island, Republic of Tanzania (Msangi et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Evaluation and improvement of sticky traps as monitoring tools for Glossina austeni and G. brevipalpis (Diptera: Glossinidae) in north-eastern KwaZulu-Natal, South Africa

Green

Venter

2007

Bull. Entomol. Res.

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The attractiveness of various colours, colour combinations and sizes of sticky traps of the 3-dimensional trap (3DT), cross-shaped target (XT), rectangular screen (RT) and monopanels were evaluated for their efficacy to capture Glossina austeni Newstead and G. brevipalpis Newstead in north-eastern KwaZulu-Natal, South Africa. The 3-dimensional shapes of the XT and 3DT in light blue (l.blue) and white were significantly (ca. 3.1-6.9 times) better than the RT for G. austeni. On bicoloured XTs, G. austeni landed preferentially on electric blue (e.blue) (58%) and black (63%) surfaces when used with white; while for G. brevipalpis, significantly more landed on e.blue (60-66%) surfaces when used with l.blue, black or white surfaces. Increased trap size increased the catches of G. brevipalpis females and both sexes of G. austeni significantly. Temoocid and polybutene sticky materials were equally effective and remained durable for 2-3 weeks. The glossy shine of trap surfaces did not have any significant effect on the attraction and landing responses of the two species. The overall trap efficiency of the e.blue/l.blue XT was 23% for G. brevipalpis and 28% for G. austeni, and that of the e.blue/black XT was 16% for G. brevipalpis and 51% for G. austeni. Larger monopanels, painted e.blue/black on both sides, increased the catches of G. austeni females significantly by up to four times compared to the standard e.blue/black XT. This monopanel would be recommended for use as a simple and cost effective survey tool for both species in South Africa.

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Section: Discussionmentioning

confidence: 99%

Evaluation and improvement of sticky traps as monitoring tools for Glossina austeni and G. brevipalpis (Diptera: Glossinidae) in north-eastern KwaZulu-Natal, South Africa

Green

Venter

2007

Bull. Entomol. Res.

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“…As a result, the disease prevalence in the northern half of the island decreased to very low levels (<5%), but little impact was noticed in the cattle residing around the forests in the southern part of the island as domestic animals could not penetrate these areas [4] . The use of IIS proved to be very challenging in the dense Jozani forest ecosystem as they had to be deployed at densities of 40–70 per km 2 for a period of 18 months to suppress the female and male fly populations by 80% and 98%, respectively [5] .…”

Section: The Eradication Strategymentioning

confidence: 99%

“…The entire operational eradication phase was monitored with more than 500 sticky panel traps [5] , [7] that were checked from once a day to once a week depending on the importance of the area ( Figure 1 ). In addition, sentinel animals were being screened every 2–5 months for AAT transmission in 38 arbitrarily assigned blocks [10] .…”

Section: The Implementationmentioning

confidence: 99%

Sterile Insects to Enhance Agricultural Development: The Case of Sustainable Tsetse Eradication on Unguja Island, Zanzibar, Using an Area-Wide Integrated Pest Management Approach

Vreysen

Saleh²,

Mramba

et al. 2014

PLoS Negl Trop Dis

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“…An important improvement in sampling was made with the introduction of the sticky panel (Madubunyi, 1990;Vreysen et al, 1996) and initial studies with the 'Chuka' sticky panel trap confirmed that the Jozani forest harboured the fly in high densities (Turner and Makishe, 1985;Madubunyi, 1990). Control efforts with insecticide-impregnated screens were initiated in November 1991 in the northern part of the Jozani forest (Vreysen et al, 1999a). Prior to this, base-line data were collected on the relative abundance, reproductive status, catch and age compositions of the G. austeni population during the wet and the dry seasons.…”

Section: Introductionmentioning

confidence: 99%

Notes on the Ecology of a Natural Glossina austeni (Diptera: Glossinidae) Population in the Jozani Forest, Unguja Island of Zanzibar

Vreysen

Khamis

1999

Int. J. Trop. Insect Sci.

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Studies were made of Glossina austeni captured with sticky panels during the dry and wet season in the northern and central part of the Jozani forest on the island of Unguja, Zanzibar. The density of the fly population was significantly higher in the northern part of the forest than in the central. Female and male daily catches remained stable in time in the northern part of the forest but the density of the male fly population declined significantly in the central part of the forest at the end of the dry season. The magnitude of the catch and the sex ratio of the samples was highly affected by the trap site in both locations. Only samples in the central part of the forest were biased towards one of the sexes depending on the seasons. The age composition of the male flies was independent of locality and season but the one of female flies was influenced by the seasons in the central part of the forest. The breeding and abortion rate of flies were similar in the two locations both during the wet and dry seasons. The stability of the fly population in terms of density and composition is probably a reflection of the optimal environmental conditions in this primary forest habitat.Resume-Des etudes ont ete effectuees sur Glossina austeni capture avec des panneaux gluants pendant la saison seche et la saison des pluies dans la partie nord et centrale de la foret Jozani sur l'ile d'Unguja, Zanzibar. La densite de la population des mouches tsetse etait plus elevee d'une maniere significative dans la partie nord de la foret par rapport a la partie centrale. Les captures quotidiennes des males et femelles restaient stable dans le temps dans la partie nord de la foret, mais la densite de la population male diminuait d'une maniere significative dans la partie centrale de la foret a la fin de la saison seche. L'endroit du piege, aussi bien au nord que dans la partie centrale, influait beaucoup sur la grandeur de la capture et la proportion des femelles dans les echantillons. Seuls les echantillons dans la partie centrale de la foret penchaient vers une majorite d'un des sexes dependant des saisons. La composition d'age des mouches males ne dependait pas de l'endroit ou de la saison, mais dans la partie centrale, les saisons influaient sur la composition d'age des mouches femelles. Le taux de reproduction et d'avortement etaient comparables dans les deux endroits aussi bien pendant la saison des pluies que pendant la saison seche. La stabilite de la population des mouches en termes de densite et de composition est probablement le reflet de conditions optimales de l'environnement dans cet habitat de foret primaire.

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An evaluation of insecticide-impregnated screens against Glossina austeni (Diptera: Glossinidae) on Unguja Island of Zanzibar

Cited by 4 publications

References 12 publications

Evaluation and improvement of sticky traps as monitoring tools for Glossina austeni and G. brevipalpis (Diptera: Glossinidae) in north-eastern KwaZulu-Natal, South Africa

Evaluation and improvement of sticky traps as monitoring tools for Glossina austeni and G. brevipalpis (Diptera: Glossinidae) in north-eastern KwaZulu-Natal, South Africa

Sterile Insects to Enhance Agricultural Development: The Case of Sustainable Tsetse Eradication on Unguja Island, Zanzibar, Using an Area-Wide Integrated Pest Management Approach

Notes on the Ecology of a Natural Glossina austeni (Diptera: Glossinidae) Population in the Jozani Forest, Unguja Island of Zanzibar

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