Introduction. This study was carriedout in French Guiana, over ten years (1994–2003) by three institutions (SPV,FDGPC and CIRAD); it updates the current state of knowledge of Tephritidae(both Dacini and Toxotrypanini tribes) species present in this country. Materials and methods. The work was mainly conductedin inhabited areas (from the Brazilian border to the Surinameseborder) where cultivated fruit crops are located. Specimens wereobtained by adult trapping and fruit sampling in nearby orchardsand at the edge of the rainforest. Trapping was done consistentlyfor 10 years, while fruit sampling was a discontinuous activity.We present only the results for fruit sampling from three consecutive years(2001–2003) in which a total of 880 kg from 45 fruit species in22 plant families were collected. Results. Twenty-nineplant species from fourteen plant families were found to be hostsof twenty-one Anastrepha species and one Bactrocera species, Bactrocera carambolae Drew and Hancock. Duringthis period, no specimen of Ceratitis capitata (Wiedemann)was collected in traps or fruit samples. We registered the main fruittrees which were hosts for B. carambolae and Anastrepha spp. Fivehymenopterous parasitoid species were identified. Among them, Diachasmimorphalongicaudata (Ashmead) (Hymenoptera, Braconidae) is anexotic species and was introduced into French Guiana in collaborationwith Brazilian authorities (EMBRAPA) in 2000 and 2001 within the frameworkof a classical biological control program. Conclusion.Our data provide baseline information about the tephritid species ofeconomic importance present in French Guiana and assist in developing potentialfuture control programs of both the B. carambolae and Anastrepha species in the Amazon Basin. These preliminary resultsare discussed in the light of their implication for rainforest conservationefforts and also evolutionary relationships between fruit fliesand their hosts.

Introduction. Quarantine heat treatments have not yet beenintroduced in West Africa and no work has been done to determine the treatment conditionsneeded to eliminate eggs and larvae of West African fruit fly populations, especially ofthe new species Bactrocera invadens, from mangoes produced in the region.The objective of our study was to carry out hot water disinfestation experiments onnaturally infested mangoes to determine the exposure parameters required to kill eggs andlarvae of B. invadens present in commercial-quality fruits. The effects of hot watertreatment on fruit quality were also investigated. Materials and methods. Atank with a heating element and a water pump equipped with a tank sensor were used.Physiologically mature, hard, green mango fruits (cv. Kent) with potential export qualitybut infested by B. invadens were harvested from plantations in theBobo-Dioulasso (Burkina Faso) area. The effect of hot water treatment by immersion at42.0 °C, 46.5 °C or 51.0 °C was evaluated by counting identifiable sites of fruit flyoviposition before and after paring the fruit and, finally, the numbers of live and deadlarvae of B. invadens were counted in the pulp. The quality of the fruitwas evaluated after the hot water immersion. Results and discussion. A hotwater treatment resulting in a core temperature of 46.5 °C could be the basis of a fruitfly quarantine treatment for West African mangoes produced in Burkina Faso. All of thelarvae extracted from the fruits treated at 46.5 °C and 51.0 °C were dead, while, in fruittreated at 42.0 °C, only about one-third of the larvae extracted were dead.

Introduction. Notre étude a porté sur l’identification desinsectes nuisibles des fruits de jujubiers indiens introduits auBurkina Faso. Notre objectif a été de faire l’inventaire de ces insectesravageurs inféodés à ces nouveaux cultivars de jujubiers et de testerdiverses techniques pour leur piégeage. Après identification desinsectes dont la plante hôte est le jujubier, nous avons déterminéceux qui accomplissent leur cycle de reproduction sur les jujubes.Matériel et méthodes. Nous avons utilisé des appâts alimentairesavec des pièges de fabrication industrielle renfermant du torulaet du terpinyl acétate et testé l’efficacité de complexes [piègesartisanaux / attractifs naturels] par rapport aux pièges à torula.Ensuite, nous avons mis en incubation des fruits attaqués afin d’identifierles insectes qui en émergeraient. La fluctuation des populationsde Tephritidae a été suivie à partir de relevés hebdomadaires dans lespièges à torula. Simultanément l’évolution de la production fruitièrea été étudiée. Résultats. L’inventaire effectué en verger de jujubiersindiens a révélé la présence de plusieurs familles appartenant àl’ordre des diptères parmi lesquelles figurent dix espèces de mouchesde fruits réparties dans quatre genres (Bactrocera, Dacus, Ceratitis et Carpomya); une noctuelle de l’ordre des lépidoptères (genre Agrotis)a également été identifiée. Les espèces les plus représentées dansles collectes effectuées par pièges ont été Carpomya incompleta (44,86 %), Bactrocera invadens (21,58 %) et Bactroceracucurbitae (18,49 %). Le taux d’émergence après incubationdes jujubes attaqués a été de 50 %. Deux espèces seulement ont émergéde ces fruits : C. incompleta (84 %) et Agrostis sp.(16 %). Parmi les appâts alimentaires naturels testés, seul le mélange[bière locale + banane] a permis de piéger des Tephritidae (Bactrocera invadens)et la noctuelle Agrotis sp. Cependant, deux autres appâtsnaturels (fruits en putréfaction et lait concentré) ont permis decapturer Agrotis sp. Discussion et conclusion.Nos résultats ont mis en évidence les deux ravageurs potentielsdes jujubiers indiens au Burkina Faso. Des études complémentaires surl’identification de l’espèce d’Agrotis, et surla biologie, l’écologie et le comportement des ravageurs incriminésseront nécessaires pour la définition de méthodes de lutte en plantationsde jujubiers au Burkina.