caa a22 4500 397547463 CHVBK 20180308164742.0 cr unu---uuuuu 161202e19960101xx s 000 0 eng 10.1093/aesa/89.1.96 doi (NATIONALLICENCE)oxford-10.1093/aesa/89.1.96 Oviposition, Development, and Survivorship of Encarsia pergandiella (Hymenoptera: Aphelinidae) in Four Instars of Bemisia argentifolii (Homoptera: Aleyrodidae) [Elektronische Daten] [Tong-Xian Liu, Philip A. Stansly] Oviposition, development, and mortality of Encarsia pergandiella Howard in the 4 instars of Bemisia argentifolii Bellows & Perring were evaluated under choice and no-choice conditions in the laboratory. E. pergandiella oviposited in all nymphal stages of B. argentifolii, but preferred 3rd and 4th instars. Regardless of host stage parasitized, adult wasps emerged from host pupae. The costs of oviposition in younger instars were delayed development, presumably to allow for growth and maturation of the host, and increased mortality of both parasitoid and host. Our results indicate that E. pergandiella can successfully exploit whitefly populations of both high and low densities by favoring large hosts of high quality when abundant, but shifting to, and successfully exploiting younger instar hosts of lower quality when necessary. © 1996 Entomological Society of America Arthropod Biology nationallicence sweetpotato whitefly nationallicence parasitoids nationallicence biological control nationallicence oviposition preference nationallicence parasitoid development nationallicence Liu Tong-Xian Southwest Florida Research and Education Center, University of Florida, P.O. Box 5127, Immokalee, FL 33934. aut Stansly Philip A. Southwest Florida Research and Education Center, University of Florida, P.O. Box 5127, Immokalee, FL 33934. aut Annals of the Entomological Society of America Oxford University Press 89/1(1996-01-01), 96-102 0013-8746 89:1<96 1996 89 aesa https://doi.org/10.1093/aesa/89.1.96 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/aesa/89.1.96 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Tong-Xian Southwest Florida Research and Education Center, University of Florida, P.O. Box 5127, Immokalee, FL 33934 aut NATIONALLICENCE 700 1- Stansly Philip A. Southwest Florida Research and Education Center, University of Florida, P.O. Box 5127, Immokalee, FL 33934 aut NATIONALLICENCE 773 0- Annals of the Entomological Society of America Oxford University Press 89/1(1996-01-01), 96-102 0013-8746 89:1<96 1996 89 aesa Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford