Handling time, prey preference, and functional response for Chrysoperla rufilabris in the laboratory |
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| Authors: | Donald A Nordlund and R K Morrison |
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| Institution: | (1) Pest Management Research Unit, USDA, ARS, P.O. Drawer DG, 77841 College Station, TX, USA;(2) Present address: Biological Control of Pests Research Unit, USDA, ARS, SARL, 2413 East Highway 83, 78596 Weslaco, TX, USA |
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| Abstract: | The predaceous larvae of Chrysoperla rufilabris (Burmeister) exhibited some success-motivated searching, particularly when feeding on Heliothis virescens (F.) eggs, but handling time did not decrease with experience. Handling time for H. virescens larvae was more than twice that for eggs. H. virescens larvae were preferred to cotton aphids (Aphis gossypii (F.)) while aphids were preferred to H. virescens eggs. C. rufilabris larvae exhibited a linear functional response to the three prey types tested, over the prey densities tested.USDA, ARS, Retire. Present address: 200 Highland, College Station, TX 77840, USA |
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| Keywords: | Neuroptera Chrysopidae prey selection behavior predation predator Heliothis Aphis gossypii |
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