نتایج جستجو برای: spodoptera exigua

تعداد نتایج: 4042  

Journal: :Applied and environmental microbiology 1999
K Luo D Banks M J Adang

The binding and pore formation properties of four Bacillus thuringiensis Cry1 toxins were analyzed by using brush border membrane vesicles from Spodoptera exigua and Spodoptera frugiperda, and the results were compared to the results of toxicity bioassays. Cry1Fa was highly toxic and Cry1Ac was nontoxic to S. exigua and S. frugiperda larvae, while Cry1Ca was highly toxic to S. exigua and weakly...

Journal: :The Journal of general virology 2004
Oihane Simón Trevor Williams Miguel López-Ferber Primitivo Caballero

The multicapsid nucleopolyhedroviruses (NPVs) of Spodoptera exigua (SeMNPV), Spodoptera frugiperda (SfMNPV), and Spodoptera littoralis (SpliNPV) are genetically similar (78 % similarity) but differ in their degree of host specificity. Infection by each of the three NPVs in these three Spodoptera host species was determined by oral inoculation of larvae with occlusion bodies (OBs) or intrahaemoc...

A. A. Talebi A. I. Lozan A. Karimi-Malati Y. Fathipour,

طی انجام پژوهشی روی جدول زندگی صحرایی شب‌پره Spodoptera exigua (Hübner) در استان خراسان رضوی، زنبور پارازیتوئید Microplitis fulvicornis (Wesmael) متعلق به خانواده Braconidae جمع‌آوری شد. افراد این زنبور از داخل لاروهای سن سوم S. exigua خارج شدند. نام علمی این زنبور توسط نگارنده آخر تأیید شد. این گونه برای اولین‌بار از ایران گزارش می‌شود.

1995
J OHN

The beet armyworm, Spodoptera exigua (Hubner), has recently become a persistent and explosive pest of cotton in the southeastern United States. It is, however, attacked by a large and diverse complex of beneficial arthropods and pathogens that appear capable of maintaining beet armyworm populations below economically-damaging levels. Disruption of this complex contributes to outbreaks of S. exi...

Journal: :The Journal of general virology 2000
X W Cheng G R Carner B M Arif

A new ascovirus was isolated from Spodoptera exigua in Indonesia and was tentatively assigned as a new species, Spodoptera exigua ascovirus 5a (SeAV-5a) according to the present ICTV ascovirus naming scheme based on DNA restriction fragment length polymorphism (RFLP), hybridization, formation of occlusion body, tissue tropism and host spectrum. SeAV-5a replicated primarily in the fat body of su...

Journal: :journal of crop protection 2015
fariba mehrkhou mahdieh musavi ali asghar talebi

the beet armyworm spodoptera exigua (hübner) is a serious and economically important pest of solanaceous crops worldwide. the nutritional indices of this pest on three host plants including pepper capsicum frutescens, eggplant solanum melongena and tomato solanum lycopersicum were determined under laboratory conditions at 26 ± 1 °c, 60 ± 5% rh and 16: 8 (l: d) h. the highest relative consumptio...

2013
Shun-Ji Li Xing Wang Zhong-Shi Zhou Jie Zhu Jue Hu Yi-Pei Zhao Gui-Wei Zhou Guo-Hua Huang

Ascoviruses are double-stranded DNA viruses that are pathogenic to lepidopteran hosts, particularly noctuid larvae. Infection of a larva is characterized by retarded growth, reduced feeding and yellowish body color. In this paper, we reported the growth and development of three major agricultural noctuid insect pests, Helicoverpa armigera (Hübner), Spodoptera exigua (Hübner) and Spodoptera litu...

Journal: :Journal of economic entomology 2010
Sonia Elvira Trevor Williams Primitivo Caballero

The production of a multiple nucleopolyhedrovirus (SeMNPV) of the beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae), has been markedly increased by using juvenile hormone analog (JHA) technology to generate a supernumerary sixth instar in the species. In the current study we compared the incidence of cannibalism in S. exigua fifth and sixth instars reared at low (two larvae per...

2001
S. D. S

By combining pesticide exclusion and cage exclusion techniques, the efficacy of natural enemies in reducing populations of Spodoptera exigua (Hübner), the beet armyworm, larvae was effectively demonstrated. Larval collections added information about parasitism and disease, and when combined with data from insecticide treatments, demonstrated that differences in S. exigua population densities us...

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