Densities of Heliothis virescens and Helicoverpa zea (Lepidoptera: Noctuidae) in Three Plant Hosts
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چکیده
منابع مشابه
Susceptibility of Helicoverpa zea and Heliothis virescens (Lepidoptera: Noctuidae) to Vip3A insecticidal protein expressed in VipCot™ cotton.
Susceptibility of laboratory and field colonies of Helicoverpa zea (Boddie) and Heliothis virescens F. to Vip3A insecticidal protein was studied in diet incorporation and diet overlay assays from 2004 to 2008. Responses of field populations were compared to paired responses of University of Arkansas laboratory susceptible H. zea (LabZA) and H. virescens (LabVR) colonies. After 7d of exposure, o...
متن کاملEvaluation of Early-Season Baculovirus Treatment for Suppression of Heliothis virescens and Helicoverpa zea (Lepidoptera: Noctuidae) Over a Wide Area
The purpose of the itor and evaluate tho liothil virescem (F.), Helicoverpa ua (~ b'eatment with an Hr mine if and to what e) tions of this pest com b'eatmenL Here we ( mone trap counts frol ing) generation throug tion F i; we compare species in the b'eate. with the b'eated plot menL Results for Fi cotton and other host ways to improve effe( For H. virelcens ant most valuable measu current econ...
متن کاملEnzymatic decomposition of elicitors of plant volatiles in Heliothis virescens and Helicoverpa zea.
Feeding by larvae of Heliothis virescens induces cotton, corn and tobacco plants to release blends of volatile organic compounds that differ in constituent proportions from blends released when Helicoverpa zea larvae feed on the same plant species. The same elicitors (and analogs) of plant biosynthesis and release of volatiles, originally identified in oral secretions of Spodoptera exigua larva...
متن کاملPlant host effect on the development of Heliothis virescens F. (Lepidoptera: Noctuidae).
Heliothis virescens F. is an important polyphagous pest that can develop on >100 plant species, including 20 economic crops. Populations of this insect are believed to be locally maintained on a few crops and weed hosts in Washington County, MS. To find the intrinsic value of these plants for the development of H. virescens populations, we fed different laboratory and wild colonies with fresh a...
متن کاملCold hardiness of Helicoverpa zea (Lepidoptera: Noctuidae) pupae.
An insect's cold hardiness affects its potential to overwinter and outbreak in different geographic regions. In this study, we characterized the response of Helicoverpa zea (Boddie) pupae to low temperatures by using controlled laboratory measurements of supercooling point (SCP), lower lethal temperature (LT(50)), and lower lethal time (LLTime). The impact of diapause, acclimation, and sex on t...
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ژورنال
عنوان ژورنال: Florida Entomologist
سال: 2007
ISSN: 0015-4040,1938-5102
DOI: 10.1653/0015-4040(2007)90[742:dohvah]2.0.co;2