Preliminary notes on the gall midges (Diptera: Cecidomyiidae) associated with the olive fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae). (Contributo in atti di convegno)

Type
Label
  • Preliminary notes on the gall midges (Diptera: Cecidomyiidae) associated with the olive fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae). (Contributo in atti di convegno) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sasso R., Viggiani G. (2007)
    Preliminary notes on the gall midges (Diptera: Cecidomyiidae) associated with the olive fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae).
    in X European Meeting of the IOBC/wprs Group "Integrated Protection of Olive Crops", Firenze
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sasso R., Viggiani G. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • A morphological and biological study of the gall midges associated with olive fruits infested by Bactrocera oleae (Gmelin) in Central and South Italy started in 1999. Beside Lasioptera berlesiana Paoli, widespread in the Mediterranean countries, other species were detected. The most common gall midge has been tentatively identified Clinodiplosis sp. The female deposits more eggs, commonly 6-8, mostly near, externally or internally, the emerging hole of the mature larva of B. oleae. The larvae develop in general gregariously in the olive fly tunnels as saprophagous species. An interesting lasiopterid, near the genus Lasioptera and apparently undescribed, is rather common. This species, which is also gregarious, appears strictly mycophagous. Another species, belonging to the Oligotrophidi, is under study. Finally, Asynapta furcifer Barnes has been obtained only from olives collected in Sicily. Several behavioral and phenological aspects of L. berlesiana were investigated. The observations carried out showed that the gall midge reproduces commonly on lentisk (Pistacia lentiscus L.) associated with leaf galls produced by Aceria stefanii (Nalepa), feeding on undetermined fungi, from end May to September, with a maximum of reproduction in July. Starting from the latter month, L. berlesiana is the only gall midge which reproduces on olive fruits of early cultivars, where the olive fly makes the first ovipositing wounds. In this narrow microhabitat, mostly occupied by the egg or by the very young larva of B. oleae, L. berlesiana oviposits, probably attracted by fungus or host plant tissue semiochemicals. In this peculiar situation the young gall midge larva can not avoid to prey the egg or the young larva inhabiting the same niche, and then continues her development, feeding on the invading fungi (commonly Camarosporium dalmaticum) and probably also on the decaying plant tissues. Subsequently during summer and fall the gall midge can oviposit in any other opening on the olive fruits. In conclusion, L. berlesiana, as the other gall midges associated with olive fruits infested by B. oleae, appears normally a mycophagous and/or a saprophagous species. The activity of the gall midges associated with the olive fruits may interfere with the oil quality. (literal)
Titolo
  • Preliminary notes on the gall midges (Diptera: Cecidomyiidae) associated with the olive fly, Bactrocera oleae (Gmelin) (Diptera: Tephritidae). (literal)
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