Identification of natural enemies of Athalia rosae and investigation on effects of these agents on the control of the pest in Kurdistan province
2010
Kamangar, Salah-al-din | Gharali, Babak | Kaihanian, Ali Akbar | Ebrahimi, Ebrahim
Population increase of turnip sawfly Athalia rosae, caused severe damages to many Canola fields of Marivan region in 2002. Study on biology and fluctuation of population of turnip sawfly, that is one of the most important Canola pests and still new in region of Marivan of Kurdistan, indicated notable affect of natural enemies on its population density. Therefore, based on this importance eggs and different stages of larvae of turnip sawfly were collected and were reared in lab conditions to emerge and identification probable natural enemies and also to estimate rate of parasitism. Results did not reveal any parasitoids from eggs, however one species of perilampid wasps (Perilampus aeneus Rossi) with less than 1% parasitism rate and two species of tachinid fly (Exorista mimula Meigen and Meigenia mutabili Fallen) emerged from collected larvae. This is the first report of Perilampus aeneus Rossi and its genus from Iran. Parasitism rate of tachinid flies was ranged between 12 to 28 % that was often on old larval stages. E. mimula was the most emerged flies from larvae with 84.4% whereas M. mutabilis was 15.2% only.
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