caa a22 4500 397570856 CHVBK 20180308164841.0 cr unu---uuuuu 161202e19960401xx s 000 0 eng 10.1093/ee/25.2.519 doi (NATIONALLICENCE)oxford-10.1093/ee/25.2.519 Biology of Aphelinus spiraecolae (Hymenoptera: Aphelinidae), a Parasitoid of the Spirea Aphid (Homoptera: Aphididae) [Elektronische Daten] [Y. Q. Tang, R. K. Yokomi] The biology of nonindigenous Aphelinus spiraecolae Evans & Schauff on spirea aphid, Aphis spiraecola Patch, was investigated in Florida. Reproduction, fecundity, longevity, oviposition, and host feeding behavior were examined in the laboratory. A. spiraecolae showed a distinct preference for 1st- and 2nd-instar spirea aphids for both oviposition and host feeding, although all aphid life stages were acceptable. Longevity of A. spiraecolae was 17.8 ± 1.6 (mean ± SEM) d, fecundity was 138.2 ± 16.2 eggs, and the parasitoid consumed 27.1 ± 4.0 aphids per lifetime. Ovipositor insertion time of ≤30 s indicated nonacceptance for host feeding and oviposition, whereas insertion time of 31-120 s was correlated with oviposition, and >120 s indicated host acceptance for feeding but not for oviposition. A. spiraecolae was confirmed to be arrhenotokous. The intrinsic rate of increase was 0.33 female offspring per female per day, the net reproductive rate was 67.3 female progeny, and population doubling time was 1.8 d. These data indicated that A. spiraecolae has a high intrinsic rate of increase, good host discrimination and preference for young life stages of spirea aphid, and suggests that A. spiraecolae has potential as a natural enemy of spirea aphid. © 1996 Entomological Society of America Physiological and Chemical Ecology nationallicence Aphis Aphelinus nationallicence host feeding nationallicence life table nationallicence biological control nationallicence citrus aphids nationallicence Tang Y. Q. U.S. Horticultural Research Laboratory, USDA-ARS, 2120 Camden Road, Orlando, FL 32803 aut Yokomi R. K. U.S. Horticultural Research Laboratory, USDA-ARS, 2120 Camden Road, Orlando, FL 32803 aut Environmental Entomology Oxford University Press 25/2(1996-04-01), 519-523 0046-225X 25:2<519 1996 25 ee https://doi.org/10.1093/ee/25.2.519 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/ee/25.2.519 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tang Y. Q. U.S. Horticultural Research Laboratory, USDA-ARS, 2120 Camden Road, Orlando, FL 32803 aut NATIONALLICENCE 700 1- Yokomi R. K. U.S. Horticultural Research Laboratory, USDA-ARS, 2120 Camden Road, Orlando, FL 32803 aut NATIONALLICENCE 773 0- Environmental Entomology Oxford University Press 25/2(1996-04-01), 519-523 0046-225X 25:2<519 1996 25 ee Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford