Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control
Tsetse flies are the cyclical vectors of African animal trypanosomosis (AAT) and human African trypanosomosis (HAT). In March 2010, the Government of Ghana initiated a large scale integrated tsetse eradication campaign in the Upper West Region (UWR) (_18,000 km2) under the umbrella of the Pan-African Tsetse and Trypanosomosis Eradication Campaign (PATTEC). We investigated the structuring of Glossina tachinoides populations within and between the three main river basins of the target area in the UWR. Out of a total sample of 884 flies, a sub-sample of 266 was genotyped at nine microsatellite loci. The significance of the different hierarchical levels was tested using Yang's parameters estimated with Weir and Cockerham's method. A significant effect of traps within groups (pooling traps no more than 3 km distant from each other), of groups within river basins and of river basins within the whole target area was observed. Isolation by distance between traps was highly significant. A local density of 0.48-0.61 flies/m2 was estimated and a dispersal distance that approximated 11 m per generation [CI 9, 17]. No significant sex-biased dispersal was detected. Dispersal distances of G. tachinoides in the UWR were relatively low, possibly as a result of the fragmentation of the habitat and the seasonality of the Kulpawn and Sissili rivers. Moreover, very high fly population densities were observed in the sample sites, which potentially reduces dispersal at constant habitat saturation, because the probability that migrants can established is reduced (density dependent dispersal). However, the observed spatial dispersal was deemed sufficient for a G. tachinoides-cleared area to be reinvaded from neighboring populations in adjacent river basins. These data corroborate results from other population genetics studies in West Africa, which indicate that G. tachinoides populations from different river basins cannot be considered isolated.
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Subjects: | L72 - Organismes nuisibles des animaux, L73 - Maladies des animaux, Glossina tachinoides, Glossinidae, Trypanosoma, génotype, dynamique des populations, méthode statistique, vecteur de maladie, capture animale, distribution géographique, échantillonnage, http://aims.fao.org/aos/agrovoc/c_30559, http://aims.fao.org/aos/agrovoc/c_3282, http://aims.fao.org/aos/agrovoc/c_7987, http://aims.fao.org/aos/agrovoc/c_3225, http://aims.fao.org/aos/agrovoc/c_6111, http://aims.fao.org/aos/agrovoc/c_7377, http://aims.fao.org/aos/agrovoc/c_8164, http://aims.fao.org/aos/agrovoc/c_24105, http://aims.fao.org/aos/agrovoc/c_5083, http://aims.fao.org/aos/agrovoc/c_6774, http://aims.fao.org/aos/agrovoc/c_3253, |
Online Access: | http://agritrop.cirad.fr/574497/ http://agritrop.cirad.fr/574497/1/document_574497.pdf |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_3253 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_3253 |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_3253 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_3253 Adam, Yahaya Bouyer, Jérémy Dayo, Guiguigbaza-Kossigan Mahama, Charles I. Vreysen, Marc J.B. Cecchi, Giuliano Abd-Alla, Adly Mohamed Mohamed Solano, Philippe Ravel, Sophie De Meeus, Thierry Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
description |
Tsetse flies are the cyclical vectors of African animal trypanosomosis (AAT) and human African trypanosomosis (HAT). In March 2010, the Government of Ghana initiated a large scale integrated tsetse eradication campaign in the Upper West Region (UWR) (_18,000 km2) under the umbrella of the Pan-African Tsetse and Trypanosomosis Eradication Campaign (PATTEC). We investigated the structuring of Glossina tachinoides populations within and between the three main river basins of the target area in the UWR. Out of a total sample of 884 flies, a sub-sample of 266 was genotyped at nine microsatellite loci. The significance of the different hierarchical levels was tested using Yang's parameters estimated with Weir and Cockerham's method. A significant effect of traps within groups (pooling traps no more than 3 km distant from each other), of groups within river basins and of river basins within the whole target area was observed. Isolation by distance between traps was highly significant. A local density of 0.48-0.61 flies/m2 was estimated and a dispersal distance that approximated 11 m per generation [CI 9, 17]. No significant sex-biased dispersal was detected. Dispersal distances of G. tachinoides in the UWR were relatively low, possibly as a result of the fragmentation of the habitat and the seasonality of the Kulpawn and Sissili rivers. Moreover, very high fly population densities were observed in the sample sites, which potentially reduces dispersal at constant habitat saturation, because the probability that migrants can established is reduced (density dependent dispersal). However, the observed spatial dispersal was deemed sufficient for a G. tachinoides-cleared area to be reinvaded from neighboring populations in adjacent river basins. These data corroborate results from other population genetics studies in West Africa, which indicate that G. tachinoides populations from different river basins cannot be considered isolated. |
format |
article |
topic_facet |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 http://aims.fao.org/aos/agrovoc/c_3253 |
author |
Adam, Yahaya Bouyer, Jérémy Dayo, Guiguigbaza-Kossigan Mahama, Charles I. Vreysen, Marc J.B. Cecchi, Giuliano Abd-Alla, Adly Mohamed Mohamed Solano, Philippe Ravel, Sophie De Meeus, Thierry |
author_facet |
Adam, Yahaya Bouyer, Jérémy Dayo, Guiguigbaza-Kossigan Mahama, Charles I. Vreysen, Marc J.B. Cecchi, Giuliano Abd-Alla, Adly Mohamed Mohamed Solano, Philippe Ravel, Sophie De Meeus, Thierry |
author_sort |
Adam, Yahaya |
title |
Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
title_short |
Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
title_full |
Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
title_fullStr |
Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
title_full_unstemmed |
Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control |
title_sort |
genetic comparison of glossina tachinoides populations in three river basins of the upper west region of ghana and implications for tsetse control |
url |
http://agritrop.cirad.fr/574497/ http://agritrop.cirad.fr/574497/1/document_574497.pdf |
work_keys_str_mv |
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dig-cirad-fr-5744972024-01-28T22:20:04Z http://agritrop.cirad.fr/574497/ http://agritrop.cirad.fr/574497/ Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control. Adam Yahaya, Bouyer Jérémy, Dayo Guiguigbaza-Kossigan, Mahama Charles I., Vreysen Marc J.B., Cecchi Giuliano, Abd-Alla Adly Mohamed Mohamed, Solano Philippe, Ravel Sophie, De Meeus Thierry. 2014. Infection, Genetics and Evolution, 28 : 588-595.https://doi.org/10.1016/j.meegid.2014.03.023 <https://doi.org/10.1016/j.meegid.2014.03.023> Genetic comparison of Glossina tachinoides populations in three river basins of the Upper West Region of Ghana and implications for tsetse control Adam, Yahaya Bouyer, Jérémy Dayo, Guiguigbaza-Kossigan Mahama, Charles I. Vreysen, Marc J.B. Cecchi, Giuliano Abd-Alla, Adly Mohamed Mohamed Solano, Philippe Ravel, Sophie De Meeus, Thierry eng 2014 Infection, Genetics and Evolution L72 - Organismes nuisibles des animaux L73 - Maladies des animaux Glossina tachinoides Glossinidae Trypanosoma génotype dynamique des populations méthode statistique vecteur de maladie capture animale distribution géographique échantillonnage http://aims.fao.org/aos/agrovoc/c_30559 http://aims.fao.org/aos/agrovoc/c_3282 http://aims.fao.org/aos/agrovoc/c_7987 http://aims.fao.org/aos/agrovoc/c_3225 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_7377 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_24105 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_6774 Ghana http://aims.fao.org/aos/agrovoc/c_3253 Tsetse flies are the cyclical vectors of African animal trypanosomosis (AAT) and human African trypanosomosis (HAT). In March 2010, the Government of Ghana initiated a large scale integrated tsetse eradication campaign in the Upper West Region (UWR) (_18,000 km2) under the umbrella of the Pan-African Tsetse and Trypanosomosis Eradication Campaign (PATTEC). We investigated the structuring of Glossina tachinoides populations within and between the three main river basins of the target area in the UWR. Out of a total sample of 884 flies, a sub-sample of 266 was genotyped at nine microsatellite loci. The significance of the different hierarchical levels was tested using Yang's parameters estimated with Weir and Cockerham's method. A significant effect of traps within groups (pooling traps no more than 3 km distant from each other), of groups within river basins and of river basins within the whole target area was observed. Isolation by distance between traps was highly significant. A local density of 0.48-0.61 flies/m2 was estimated and a dispersal distance that approximated 11 m per generation [CI 9, 17]. No significant sex-biased dispersal was detected. Dispersal distances of G. tachinoides in the UWR were relatively low, possibly as a result of the fragmentation of the habitat and the seasonality of the Kulpawn and Sissili rivers. Moreover, very high fly population densities were observed in the sample sites, which potentially reduces dispersal at constant habitat saturation, because the probability that migrants can established is reduced (density dependent dispersal). However, the observed spatial dispersal was deemed sufficient for a G. tachinoides-cleared area to be reinvaded from neighboring populations in adjacent river basins. These data corroborate results from other population genetics studies in West Africa, which indicate that G. tachinoides populations from different river basins cannot be considered isolated. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/574497/1/document_574497.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.meegid.2014.03.023 10.1016/j.meegid.2014.03.023 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.meegid.2014.03.023 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.meegid.2014.03.023 |