Tobacco Budworm Control in Caged Cotton With a Resistant Variety, Augmentative Releases of Campoletis sonorensis, and Natural Control by Other Beneficial Species1234

Autor:	M. Diaz, P. D. Lingren, A. W. Hartstack, M. J. Lukefahr
Rok vydání:	1978
Předmět:	Larva education.field_of_study Ecology Heliothis virescens biology Population Orius insidiosus Parasitism General Medicine biology.organism_classification Horticulture Cabbage looper Insect Science Botany Trichoplusia education Predator
Zdroj:	Journal of Economic Entomology. 71:739-745
ISSN:	1938-291X 0022-0493
DOI:	10.1093/jee/71.5.739
Popis:	A tobacco budworm, Heliothis virescens (F.), population in field cages deposited ca. 1/2 as many eggs on a nectariless-high terpenoid-hirsute line of colton (XG-31) as on a nectaried-normal terpenoid-hirsute line (M-8). Fewer small larvae developed to medium size on XG-31 than on M-8, indicating small larval mortality most likely due to the high terpenoid content. About 8 times more medium-size larvae and twice as many large larvae were present on M-8 as on XG-31 in the F1 insect generation. Releases of Campoletis sonorensis (Cameron) resulted in 81–100% parasitism of medium larvae and, thus, considerably fewer large larvae. A native parasite, Trichogramma pretiosum Riley, and a predator, Orius insidiosus (Say), also preyed heavily on the tobacco budworm population. As a result, F2 tobacco budworm larval populations did not develop in the XG-31 plots where C. sonorensis was released. The numbers of small- and medium-sized tobacco budworm larvae also were greatly reduced in the M-8 parasite release plots. The nectariless XG-31 had fewer cabbage looper, Trichoplusia ni (Hubner), eggs and larvae than the nectaried M-8, but the high terpenoid content of XG-31 did not significantly affect numbers of cabbage looper larvae.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5110c405394152a7a1929f5b25b3c1d4 https://doi.org/10.1093/jee/71.5.739 Zobrazit plný text záznamu