In this study, functional and numerical response tests, which are important components in the selection of biological control agent, were carried out. trials, amount food consumed, attack rate (a) handling time (Th) calculated for each developmental period, depending on number preys given after 24 hours. The obtained results evaluated with Holling. experiments, development predator insect was e...

functional response, as describing the rates of predation in different prey density, and determining the predator efficiency, is important in the regulation of prey populations. the functional response of male and female adult of lady beetle, hippodamia variegata, was studied at different densities of green peach aphid under laboratory conditions on canola brassica napus l. (cv. rgs003). nymphs...

Aphids cause considerable damage to numerous crops all over the world and insecticides are main means of controlling them, despite their detrimental impacts on human environmental health. This study assessed effectiveness parasitoid Aphidius colemani Viereck (Hymenoptera: Braconidae), a mixture predatory ladybird beetles, Hippodamia variegata Goeze, Chilocorus calvus Chiccl, Cheilomenes propinq...

The Adonis ladybird, Hippodamia variegataGoeze (Coleoptera: Coccinellidae) is known as an important predator of the Common pistachio psylla, Agonoscena pistaciae Burckhardt & Lauterer (Hemiptera: Psyllidae). Despite using the selective pesticides to manage the pests in the pistachio orchards, these chemicals have influenced non-target organisms like predators and parasitoids. ...

The suitability of two prey species, Aphis pomi De Geer (Hemiptera: Aphididae) and Brevicoryne brassicae (L.), for two generalist aphidophagous coccinellids, Adalia tetraspilota (Hope) (Coleoptera: Coccinellidae) and Hippodamia variegata (Goeze), at various abundance levels was investigated under laboratory conditions. While both A. pomi and B. brassicae were found to be suitable, the predators...