(Z)-9-tetradecenal: a potent inhibitor of pheromone-mediated communication in the oriental tobacco budworm moth, Helicoverpa assulta

1995 ◽  
Vol 177 (6) ◽  
Author(s):  
K.S. Boo ◽  
K.C. Park ◽  
D.R. Hall ◽  
A. Cork ◽  
B.G. Berg ◽  
...  
Keyword(s):  
Potent Inhibitor ◽  
Tobacco Budworm ◽  
Mediated Communication ◽  
Helicoverpa Assulta

Effects of the sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta (Lepidoptera, Noctuidae)

2001 ◽  
Vol 204 (22) ◽  
pp. 3935-3942 ◽  
Author(s):  
Seong Eun Jeong ◽  
Yun Lee ◽  
Jeong Hee Hwang ◽  
Douglas C. Knipple
Keyword(s):  
Male Fertility ◽  
Chemical Constituents ◽  
Direct Injection ◽  
Arginine Decarboxylase ◽  
Tobacco Budworm ◽  
Polyamine Metabolism ◽  
Helicoverpa Assulta ◽  
Continuous Feeding ◽  
The Common ◽  
Lepidoptera Noctuidae

SUMMARY We investigated the effects of sap of the common oleander Nerium indicum (Apocyanaceae) on male fertility and spermatogenesis in the oriental tobacco budworm Helicoverpa assulta. We found that continuous feeding of oleander sap during the larval period significantly affects fertility in males but not in females. This effect was also induced by direct injection of oleander sap into the hemocoel of 2-day-old pupae. Histological analyses of developing testes following oleander injection revealed a developmental delay and progressively more severe morphological abnormalities in the later stages of development. The effects of oleander sap on spermatogenesis in H. assulta were associated with greatly reduced levels of the two major polyamines, spermidine and spermine, in testis compared with saline-injected controls. In contrast, levels of putrescine, which is a precursor of both spermidine and spermine, and the activities of the enzymes ornithine decarboxylase and arginine decarboxylase, which are involved in the biosynthesis of putrescine, were initially elevated following oleander injection, but subsequently failed to undergo the induction that normally occurs during late pupal development. The effects of oleander sap on spermidine and spermine levels could be the result of direct inhibition by chemical constituents of the oleander sap of one of the enzymes used in common in the conversions of putrescine to spermidine and spermidine to spermine; alternatively, these effects on polyamine metabolism could be secondary to the disruption of a more fundamental process in the developmental program guiding spermatogenesis in H. assulta.

Female sex pheromone of oriental tobacco budworm,Helicoverpa assulta (Guenee) (Lepidoptera: Noctuidae): Identification and field testing

1992 ◽  
Vol 18 (3) ◽  
pp. 403-418 ◽  
Author(s):  
A. Cork ◽  
K. S. Boo ◽  
E. Dunkelblum ◽  
D. R. Hall ◽  
K. Jee-Rajunga ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Field Testing ◽  
Tobacco Budworm ◽  
Female Sex Pheromone ◽  
Helicoverpa Assulta ◽  
Female Sex ◽  
Lepidoptera Noctuidae

Resistance selection and mechanisms of oriental tobacco budworm (Helicoverpa assulta Guenee) to indoxacarb

2012 ◽  
Vol 103 (3) ◽  
pp. 219-223 ◽  
Author(s):  
Sen Pang ◽  
Wenyu You ◽  
Liusheng Duan ◽  
Xiaoyu Song ◽  
Xuefeng Li ◽  
...  
Keyword(s):  
Tobacco Budworm ◽  
Helicoverpa Assulta ◽  
Resistance Selection

Multiple acyl-CoA desaturase-encoding transcripts in pheromone glands of Helicoverpa assulta, the oriental tobacco budworm

2003 ◽  
Vol 33 (6) ◽  
pp. 609-622 ◽  
Author(s):  
Seong Eun Jeong ◽  
Claire-Lise Rosenfield ◽  
Patricia Marsella-Herrick ◽  
Kyung Man You ◽  
Douglas C. Knipple
Keyword(s):  
Tobacco Budworm ◽  
Helicoverpa Assulta ◽  
Pheromone Glands

scholarly journals Identification of the Differences in Olfactory System Between Male and Female Oriental Tobacco Budworm Helicoverpa assulta 

2020 ◽  
Author(s):  
Haichao Li ◽  
Weizheng Li ◽  
Changjian Miao ◽  
Gaoping Wang ◽  
Man Zhao ◽  
...  
Keyword(s):  
Olfactory System ◽  
Binding Proteins ◽  
Tobacco Budworm ◽  
Helicoverpa Assulta ◽  
Male And Female ◽  
Mate Search ◽  
Pheromone Identification ◽  
Survival And Reproduction ◽  
Odorant Binding ◽  
Whole Transcriptome

Abstract Background: The olfactory system of insects facilitates their search for host and mates, hence it plays an essential role for insect survival and reproduction. Insects recognize odor substances through olfactory neurons and olfactory genes. Previous studies showed that there are significant sex-specific differences in how insects identify odorant substances, especially sex pheromones. However, whether the sex-specific recognition of odorant substances is caused by differences in the expression of olfaction-related genes between males and females remains unclear. Results: In order to clarify this problem, the whole transcriptome sequence of the adult Helicoverpa assulta, an important agricultural pest of tobacco and other Solanaceae plants, was obtained using PacBio sequencing. RNA-seq analysis showed that there were 27 odorant binding proteins (OBPs), 24 chemosensory proteins (CSPs), 4 pheromone-binding proteins (PBPs), 68 odorant receptors (OR) and 2 sensory neuron membrane proteins (SNMPs) genes that were expressed in the antennae of male and female H. assulta. Females had significantly higher expression of GOBP1-like, OBP, OBP3, PBP3 and SNMP1 than males, while males had significantly higher expression of GOBP1, OBP7, OBP13, PBP2 and SNMP2. Conclusions: Our findings improve our understanding of olfactory genes in H. assulta, and can be used to further study pheromone identification, mate search, and sex differences in an insect’s ability to search for hosts. These results improve our understanding of mate search and host differentiation in H. assulta.

Helicoverpa assulta. [Distribution map].

1994 ◽  
Author(s):  
Keyword(s):  
Tamil Nadu ◽  
Pacific Islands ◽  
New Caledonia ◽  
Solomon Islands ◽  
Uttar Pradesh ◽  
American Samoa ◽  
Tobacco Budworm ◽  
Mariana Islands ◽  
Distribution Map ◽  
Helicoverpa Assulta

Abstract A new distribution map is provided for Helicoverpa assulta (Guenée) Lepidoptera: Noctuidae (cape gooseberry budworm, oriental tobacco budworm). Attacks Physalis, tobacco, tomato and other solanaceous plants. Information is given on the geographical distribution in Africa, Aldabra Islands, Angola, Cameroon, Central African Republic, Comoro Islands, Gambia, Ghana, Ivory Coast, Kenya, Liberia, Malawi, Mali, Nigeria, Senegal, Sierra Leone, South Africa, Tanzania, Uganda, Zaire, Zimbabwe, Asia, Bangladesh, Bhutan, Brunei, Burma, China, Beijing, Guangdong, Guangxi, Hebei, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Shanghai, Sichuan, Christmas Island, Cocos-Keeling Islands, India, Andhra Pradesh, Assam, Bihar, Gujarat, Haryana, Himachal Pradesh, Karnataka, Madhya Pradesh, Maharashtra, Meghalaya, Orissa, Tamil Nadu, Uttar Pradesh, Indonesia, Java, Sulawesi, Sumatra, Tanimbar Island, Japan, Korea, Laos, Malaysia, Sabah, Sarawak, West Malaysia, Pakistan, Philippines, Sikkim, Singapore, Sri Lanka, Taiwan, Thailand, Vietnam, Australasia and Pacific islands, Australia, Northern Territory, Queensland, Western Australia, Fiji, Gambier Islands, Mariana Islands, New Britain, New Caledonia, Norfolk Island, Papua New Guinea, American Samoa, Western Samoa, Society Islands, Solomon Islands, Tubuai Islands, Vanuatu, West Irian.

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