ACTIVITY OF PEACH TWIG BORER Anarsia lineatella Zeller AND ITS ASSOCIATED BIO AGENTS ON PEACH TREES | ||||
| Arab Universities Journal of Agricultural Sciences | ||||
| Article 18, Volume 14, Issue 2, September 2006, Page 813-821 PDF (326.52 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ajs.2006.15519 | ||||
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| Author | ||||
| Salwa S.M. Abdel-Samad* | ||||
| Biological Control Department, Agric. Res. Center, Giza, Egypt | ||||
| Abstract | ||||
| The seasonal activity of the peach twig borer, Anarsia lineatella Zeller was in-vestigated during 2004 and 2005 seasons. The data revealed that the infested twigs empty from larvae (15%) were higher than that with larvae (1.25%) in February. The situation was reverse in April which recorded 8% and 14.75% for both, respec-tively. In fruits, infestation began to appear in the third week of March which rec-orded 2% whereas the maximum rate was recorded in May (16.75%). Three species of hymenopterous parasitoids were found; Apanteles ruficrus Haliday (Fam. Braco-nidae), Diplazon laetatorus Fab. (Fam. Ichneumonidae) and Microgaster tiro Rein-hard (Fam. Braconidae). These parasitoids reached its maximum during April (13.5%) that seems to be more active. Their numbers were positively correlated with the rate of infestation (r = + 0.799). In spite of presence of four predatory species (Coccinella undecimpunctata L., Rodalia cardinalis Mulsant, and Scymnus syriacus Marseul (Coleoptera: Coccinellidae) and Syrphus sp. (Diptera: Syrphidae)), it seems to be less active. Their numbers recorded very slight positive correlation with the rate of infestation (r =+0.423) | ||||
| Keywords | ||||
| Peach; Anarsia lineatella; parasitoid; Predators; biological control | ||||
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