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Relationships between host-fruit, pupal weight and fecundity in fruit flies (Diptera : Tephritidae)

Duyck P.F., David P., Brunel C., Quilici S.. 2004. In : Final Research Co-Ordination Meeting on Quality Assurance of Mass Produced and Released Fruit Flies, Chiapas, Mexique, 18-22 October 2004. s.l. : s.n., 1 p.. Final Research Co-Ordination Meeting on Quality Assurance of Mass Produced and Released Fruit Flies, 2004-10-18/2004-10-22, Chiapas (Mexique).

In Reunion Island, four species of fruit flies (Diptera: Tephritidae) cause damages on fruit crops namely the Mascarene fruit fly, Ceratitis catoirii (Guérin Mèneville), the Mediterranean fruit fly, C. capitata (Wiedemann), the Natal fruit fly, C. rosa Karsch and the recent invasive peach fruit fly, Bactrocera zonata (Saunders). The influence of four important host fruit (guava, Psidium guayava L., strawberry guava, Psidium cattleianum Sabine, mango, Mangifera indica L. and Indian almond, Terminalia catappa L.) on larval development, pupal weight and fecundity of these species has been studied in the laboratory. Larval host had strong effects on survival, developmental times and pupal sizes. Relationships were also observed between developmental times and pupal weight in certain fruit species. Pupal weight (for a given fruit species and among fruit species) had an influence on the fecundity of the emerged females. The relationship between pupal weight and female fecundity was determined for the 4 fruit flies species studied. These results should be useful for a better understanding of the importance of pupal weight as an indicator of female quality. (Texte intégral)

Mots-clés : culture fruitière; tephritidae; insecte nuisible; ceratitis; bactrocera; psidium guajava; mangifera indica; psidium littorale; terminalia catappa; développement biologique; fertilité; dégât; plante hôte; réunion; france; mouche des fruits

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