Area-Wide Integrated Management of a Glossina palpalis gambiensis Population from the Niayes Area of Senegal: A Review of Operational Research in Support of a Phased Conditional Approach

Vreysen, Marc J. B.; Seck, Momar Talla; Sall, Baba; Mbaye, Adama; Bassène, Mireille Djimangali; Fall, A. G.; Lo, Mbargou; Bouyer, Jérémy

doi:10.1201/9781003169239-16

Cited by 16 publications

(17 citation statements)

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“…The implementation of the SIT in the context of an AW-IPM strategy to eradicate tsetse flies relies on the release of sterile males in the targeted area. This was successful in eradicating a population of G. austeni from Unguja Island of Zanzibar 37 and significant progress has been made in the eradication programme implemented against G. p. gambiensis in the Niayes area of Senegal 38 . However, as both male and female tsetse flies are vectors of Trypanosoma species, the release of large numbers of sterile male flies bears a potential risk of temporarily increasing disease transmission during the initial release phase of an SIT programme 39 .…”

Section: Discussionmentioning

confidence: 99%

Prevalence of Trypanosoma and Sodalis in wild populations of tsetse flies and their impact on sterile insect technique programmes for tsetse eradication

Dieng

Dera

Moyaba

et al. 2022

Sci Rep

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The sterile insect technique (SIT) is an environment friendly and sustainable method to manage insect pests of economic importance through successive releases of sterile irradiated males of the targeted species to a defined area. A mating of a sterile male with a virgin wild female will result in no offspring, and ultimately lead to the suppression or eradication of the targeted population. Tsetse flies, vectors of African Trypanosoma, have a highly regulated and defined microbial fauna composed of three bacterial symbionts that may have a role to play in the establishment of Trypanosoma infections in the flies and hence, may influence the vectorial competence of the released sterile males. Sodalis bacteria seem to interact with Trypanosoma infection in tsetse flies. Field-caught tsetse flies of ten different taxa and from 15 countries were screened using PCR to detect the presence of Sodalis and Trypanosoma species and analyse their interaction. The results indicate that the prevalence of Sodalis and Trypanosoma varied with country and tsetse species. Trypanosome prevalence was higher in east, central and southern African countries than in west African countries. Tsetse fly infection rates with Trypanosoma vivax and T. brucei sspp were higher in west African countries, whereas tsetse infection with T. congolense and T. simiae, T. simiae (tsavo) and T. godfreyi were higher in east, central and south African countries. Sodalis prevalence was high in Glossina morsitans morsitans and G. pallidipes but absent in G. tachinoides. Double and triple infections with Trypanosoma taxa and coinfection of Sodalis and Trypanosoma were rarely observed but it occurs in some taxa and locations. A significant Chi square value (< 0.05) seems to suggest that Sodalis and Trypanosoma infection correlate in G. palpalis gambiensis, G. pallidipes and G. medicorum. Trypanosoma infection seemed significantly associated with an increased density of Sodalis in wild G. m. morsitans and G. pallidipes flies, however, there was no significant impact of Sodalis infection on trypanosome density.

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Section: Discussionmentioning

confidence: 99%

Prevalence of Trypanosoma and Sodalis in wild populations of tsetse flies and their impact on sterile insect technique programmes for tsetse eradication

Dieng

Dera

Moyaba

et al. 2022

Sci Rep

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“…The SIT has been successfully used for the suppression, and even the local eradication, of tsetse populations transmitting African trypanosomes causing sleeping sickness in humans and nagana in animals [ 4 ]. Mating performance of irradiated male insects is one of the key factors that need to be evaluated before the implementation of SIT releases.…”

Section: Livestock Pestsmentioning

confidence: 99%

“…The SIT has been very successful to manage populations of plant and livestock pests worldwide [ 1 , 4 ]. More recently, the SIT has been considered as a tool to suppress mosquito species transmitting major human pathogens, such as the yellow fever mosquito Aedes aegypti and the Asian tiger mosquito Ae.…”

Section: Mosquitoesmentioning

confidence: 99%

“…The concept of the SIT was conceived by Edward F. Knipling, and it was first used for the population control of the New World screwworm, Cochliomyia hominivorax in the 1950s [ 2 ]. Since then, it has been successfully used as a component of area-wide integrated pest management (AW-IPM) approaches [ 3 ], to suppress, contain, prevent the (re)introduction and even locally eradicate populations of insect pests and disease vectors [ 1 , 4 ]. This Special Issue on “Sterile insect technique (SIT) and its applications” presents recent progress in this area as well as the challenges SIT faces from the developmental phase until its implementation in the field.…”

Section: Introductionmentioning

confidence: 99%

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Sterile Insect Technique (SIT) and Its Applications

Bourtzis¹,

Vreysen²

2021

Insects

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Although most insect species have a beneficial role in the ecosystems, some of them represent major plant pests and disease vectors for livestock and humans. During the last six–seven decades, the sterile insect technique (SIT) has been used as part of area-wide integrated pest management strategies to suppress, contain, locally eradicate or prevent the (re)invasion of insect pest populations and disease vectors worldwide. This Special Issue on “Sterile insect technique (SIT) and its applications”, which consists of 27 manuscripts (7 reviews and 20 original research articles), provides an update on the research and development efforts in this area. The manuscripts report on all the different components of the SIT package including mass-rearing, development of genetic sexing strains, irradiation, quality control as well as field trials.

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“…Therefore, the SIT would best be applied when the pest density is low due to prior attempts at pest population reduction, such as chemical insecticides, host removal, mass-trapping, and male annihilation. Integrating the SIT application as a final component into an AW-IPM program ultimately convert the treatment area into a pest-free area [ 25 , 26 ]. In this paper, we report on the first successful eradication of C .…”

Section: Introductionmentioning

confidence: 99%

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

et al. 2022

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This paper presents the first case of the successful eradication of a Coleoptera pest species over a wide area using a combination of male annihilation technique (MAT) and sterile insect technique (SIT) application. The sweet potato weevil, Cylas formicarius, is one of the most destructive and widely distributed pests of sweet potato, Ipomoea batatas. A project to eradicate it was launched in 1994 on Kume Island, Okinawa Prefecture, Japan. The MAT application was first used from November 1994 to January 1999 to reduce the density of wild populations. The distribution and densities of weevils were assessed by trapping them and surveying infestation rates in wild hosts and sweet potatoes in the field. The C. formicarius populations were suppressed by approximately 90% and plant infestations were reduced from 9.5% to less than 0.1% by using the MAT. Then, hundreds of thousands to millions of sterile weevils were released each week (ca. 460 million in total from 1999 to 2012). As a result, based on an analysis of 12748 stems and 48749 tubers, no weevil infections were detected in the stems or tubers of sweet potato since 1997. Since 2009, almost no wild weevils were captured in traps, and in wild host and sweet potato surveys no weevils have been found in any of the 580 locations and 8833 samples since October 2011. As of 28 December, 2012, C. formicarius is considered to have been eradicated from Kume Island. This paper describes the process of eradicating C. formicarius using SIT application integrated with MAT application for the first time and discusses some of the main challenges associated with the weevil eradication campaignl.

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Area-Wide Integrated Management of a Glossina palpalis gambiensis Population from the Niayes Area of Senegal: A Review of Operational Research in Support of a Phased Conditional Approach

Cited by 16 publications

References 1 publication

Prevalence of Trypanosoma and Sodalis in wild populations of tsetse flies and their impact on sterile insect technique programmes for tsetse eradication

Prevalence of Trypanosoma and Sodalis in wild populations of tsetse flies and their impact on sterile insect technique programmes for tsetse eradication

Sterile Insect Technique (SIT) and Its Applications

First case of successful eradication of the sweet potato weevil, Cylas formicarius (Fabricius), using the sterile insect technique

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