the cotton aphid, aphis gossypii glover is a major pest of greenhouse cucumber in the world. in this study, age specific functional response of aphidius matricariae haliday and praon volucre (haliday) were investigated on a. gossypii at 25±1°c, 60±5% rh and a photoperiod of 14 l: 10 d h. the results showed that the functional response of a. matricariae was type iii during 1st, 2nd, 3rd, 4th and...

abstract the aphid parasitoids, aphidius colemnai viereck and a. matricariae (haliday) (hymenoptera: braconidae: aphidiinae) have high potential as the most effective biological control agents for controlling the cotton aphis aphis gossypii glover (hemiptera: aphididae). in this investigation, the effect of five constant temperatures (10, 15, 20, 25 and 30 °c) on the reproductive parameters was...

the melon aphid, aphis gossypii glover (hemiptera: aphididae), is one of the most important pests of agricultural products in iran. in this study, susceptibility of melon aphid that collected from seven regions (yazd, varamin, mohammadshahr, esfehan, karaj, hashtgerd and ramsar) was compared to pirimicarb and malathion after 24 hours in 2009. bioassay experiments on adults were carried out by u...

(1) Intraguild predation (IGP) can occur among aphidophagous predators thus reducing their effectiveness in controlling crop pests. Among ladybirds, Coccinella septempunctata L. and Hippodamia variegata Goeze are the most effective predators upon Aphis gossypii Glov., which is an economically important pest of melon. Understanding their likelihood to engage in reciprocal predation is a key poin...

A mechanically transmissible virus causing leaf mottling and ringspotting of Passiflora edulis var. flavicarpa in the Ivory Coast is described. Its particles are flexuous rods 810-830 nm long and 15 nm wide. It infects mainly species of Passifloraceae and Leguminosae; Passiflora foetida is a good diagnostic host. Aphis gossypii and Aphis spiraecola transmit the virus after brief acquisition fee...

The objective of this study was to evaluate the functional response of Orius insidiosus preying on the third and fourth instars of Aphis gossypii nymphs that were reared on transgenic NuOPAL (Bollgard I Event 531) and conventional Buriti cotton varieties. Fifty O. insidiosus female bugs aged 12–24h were distributed into five different Petri dishes with different densities of A. gossypii (2, 4, ...