Seasonal abundance of mango fruit flies (Diptera: tephritidae) and ecological implications for their management in mango and cashew orchards in Benin (centre and north)

Vayssières Jean-François, De Meyer Marc, Ouagoussounon Issa, Sinzogan Antonio Alain Coffi, Adandonon Appolinaire, Korie Sam, Wargui Rosine, Anato F., Houngbo Hermance, Didier Christian, De Bon Hubert, Goergen Georg. 2015. Seasonal abundance of mango fruit flies (Diptera: tephritidae) and ecological implications for their management in mango and cashew orchards in Benin (centre and north). Journal of Economic Entomology, 108 (5) : 2213-2230.

https://doi.org/10.1093/jee/tov143

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Quartile : Q2, Sujet : ENTOMOLOGY

Résumé : We report the results of a large-scale (six orchards) and long-term (5-yr) study on seasonal population fluctuations of fruit flies (Diptera Tephritidae) in mango (2005–2009) and cashew (2007–2009) orchards in the Borgou Department, Benin. During the five consecutive years of mango fruit fly monitoring, 25 tephritid species were captured including three species of Bactrocera, 11 of Ceratitis, and 11 of Dacus, which is represented by 2,138,150 specimens in mango orchards. We observed significant differences in Bactrocera dorsalis (Hendel) counts between “high” and “low” mango production years from 2005 to 2008 but not in Ceratitis cosyra (Walker) counts. The native species, C. cosyra, the most abundant species during the dry season, peaked beginning of May, while the exotic species, B. dorsalis, the most abundant species during the rainy season, peaked in June. Preliminary results underlined the role of nine species of wild hosts and seven species of cultivated ones around mango orchards that played an important role in maintaining B. dorsalis in this Sudan zone all year round. The presence of C. cosyra stretched over 9 mo. During the first 14 wk of tephritid monitoring on cashew orchards situated near mango orchards, most flies (62%) were captured in traps positioned in cashew orchards, showing the strong interest of an early fly control on cashew before the mango season. According to these results, in the Sudan zone, effective and compatible control methods as proposed by the IPM package validated by the West African Fruit Fly Initiative project against mango fruit flies are proposed for a large regional tephritid control program in same zones of West Africa.

Mots-clés Agrovoc : Mangifera indica, Tephritidae, Bactrocera dorsalis, Ceratitis capitata, culture fruitière, variation saisonnière, dynamique des populations, surveillance des déprédateurs, plante hôte, piège à base de phéromones, méthode de lutte