Forest Sciences Commons^™

Functional Response Of Two Coccinellid Predators, Scymnus Levaillanti And Cycloneda Sanguinea, To The Cotton Aphid, Aphis Gossypii, Ali̇ Arda Işikber

Turkish Journal of Agriculture and Forestry

Functional responses of 2 female coccinellid predators, Scymnus levaillanti and Cycloneda sanguinea, to the cotton aphid, Aphis gossypii, at various temperatures were studied under laboratory conditions. Both coccinellid species showed different functional responses to the cotton aphid. The larger species, C. sanguinea, was seen to eat more aphids than the smaller species, S. levaillanti, at each temperature, due to its greater voracity. The female adults of both coccinellid species feed maximally during the first 3 h and therefore, the increase in fresh weight gain and number of aphids killed by both coccinellid species are much higher during the first 3 …