In:
Hellenic Plant Protection Journal, Walter de Gruyter GmbH, Vol. 13, No. 2 ( 2020-07-01), p. 66-77
Abstract:
The olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) is the major pest of olives worldwide. The figitid wasp, Aganaspis daci (Hymenoptera: Figitidae), is a larval-prepupal endoparasitoid of fruit fly species, and it was found to successfully parasitize medfly larvae in field-infested figs in Greece. To assess the potential of A. daci as a biological control agent against B. oleae , we studied the effect of olive fruit size on parasitism rates of A. daci on 2 nd and 3 rd instar larvae of B. oleae , by using fruit of different size (cultivar ‘Chalkidikis’) and wild olive fruit. In addition, we conducted releases of A. daci females in a pilot olive grove in Volos, Magnesia. From July to October, we released 200 A. daci females/0.1 ha/week, followed by olive fruit sampling to estimate olive fruit infestation levels and the parasitism rates of A. daci . Laboratory trials revealed that fruit size and larvae instar were predictors of parasitism success of A. daci , with parasitism rates higher for small-size fruit of the cultivar “Chalkidikis” and the 3 rd instar larvae of B. oleae . In field trials, no A. daci adults emerged from the olive fly infested fruit.
Type of Medium:
Online Resource
ISSN:
1791-3691
DOI:
10.2478/hppj-2020-0007
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2020
detail.hit.zdb_id:
2417851-2
