Article
Environmental Sciences
Shuangyan Yao, Yue Yang, Yuying Xue, Wenli Zhao, Xiaoguang Liu, Mengfang Du, Xinming Yin, Ruobing Guan, Jizhen Wei, Shiheng An
Summary: This study examined the developmental effects of sublethal spinosad exposure on Helicoverpa armigera and found that it caused hormonal disorders in larvae, leading to developmental abnormalities. This information provides a basis for evaluating spinosad toxicity on insect metamorphosis and potential targets for effectively controlling cotton bollworm.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Agronomy
Karim El Fakhouri, Rachid Boulamtat, Abdelhadi Sabraoui, Mustapha El Bouhssini
Summary: This study assessed yield losses and pod damage caused by H. armigera on chickpea crops and found effective biological and selective insecticides for control. The results demonstrate that two applications of emamectin benzoate or indoxacarb significantly reduced H. armigera larval population and pod damage.
Article
Biotechnology & Applied Microbiology
Shounak Jagdale, Meenakshi Tellis, Vitthal T. Barvkar, Rakesh S. Joshi
Summary: The study reveals that glucosinolates have a significant negative impact on Helicoverpa armigera, disrupting various biological processes and inducing oxidative stress. The insects may utilize myrosinase-like enzymes to breakdown sinigrin and activate pathways for detoxification and overcoming the deleterious effects of sinigrin. These findings suggest a complex molecular response in insects to glucosinolate intake.
Article
Zoology
Zhenlong Jiao, Mingming Chen, Lina Jia, Chaoqin Sun, LongBing Yang, Guo Guo
Summary: This study provides insights into the effects of Ovomermis sinensis parasitism on the development of Helicoverpa armigera. It was found that O. sinensis arrests the host development by reducing 20E and maintaining JH, thereby causing developmental arrests. Rescue experiments showed that injecting 20E can rescue midgut replacement issues in the host.
JOURNAL OF INVERTEBRATE PATHOLOGY
(2022)
Article
Environmental Sciences
Yan Shen, Qiong Li, Fujin Fang, Chuanli Yang, Yu Dong, Xiaoqin Li, Zhizhi Luo, Xiaobing Shen
Summary: This study compares the resistance rates of Blattella germanica to beta-cypermethrin nanoemulsion and conventional emulsion. The results show that the resistance factor of beta-cypermethrin nanoemulsion increases at a slower rate compared to beta-cypermethrin emulsion.
Article
Biochemistry & Molecular Biology
N. R. Prasannakumar, N. Jyothi, S. Saroja, A. N. Lokesha
Summary: Phthorimaea absoluta is a destructive pest of tomato, causing complete yield loss if not controlled. Synthetic insecticides, while effective, have negative environmental impacts. Herbal insecticides, such as essential oils, offer a sustainable alternative. This study investigated the insecticidal properties of Ocimum basilicum and Mentha piperita essential oils as well as their constituents against P. absoluta. Both oils showed significant mortality effects, with M. piperita being the most effective. The study suggests that these essential oils could be used as an additional approach for managing P. absoluta.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2023)
Article
Agronomy
Cem Erdogan, A. Sibel Velioglu, M. Oktay Gurkan, Ian Denholm, Graham D. Moores
Summary: This study investigated resistance to commonly used pyrethroid and neonicotinoid insecticides in Trialeurodes vaporariorum in Turkey. The results showed resistance levels of up to 8.1-fold, 16-fold, 11.4-fold for neonicotinoids and 56.5-fold, 116.4-fold for pyrethroids. Biochemical analyses revealed no positive relationship between esterase or glutathione-S-transferase activity and resistance to these insecticides.
Article
Entomology
Sare Ilknur Yavasoglu, Abeer Mousa Alkhaibari, Fatih Mehmet Simsek
Summary: Ae. caspius populations in Turkey show resistance to multiple insecticides and have multiple resistance mechanisms.
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
(2022)
Article
Agronomy
Bushra Saddiq, Muhammad Babar Shahzad Afzal, Ashfaq Ahmad Sial, Naeem Abbas, Sarfraz Ali Shad, Asif Sajjad, Sajjad Ali
Summary: Phenacoccus solenopsis Tinsley, a pest affecting various crops and ornamental plants, has shown resistance to multiple classes of insecticides. Research indicates that oxidases and esterases play significant roles in detoxifying insecticides in this pest species.
Article
Entomology
Ezhumalai Parthiban, Sreeramulu Bhuvaragavan, Omar Gonzalez-Ortega, Sundaram Janarthanan, Ravichandran Ramanibai
Summary: The study showed that the Annona reticulata active extract using ethyl acetate has high larvicidal activity against Aedes aegypti without toxicity to non-target aquatic organisms. The extract also significantly inhibited acetylcholinesterase, alpha- and beta-carboxylesterases, glutathione S-transferase, and alkaline phosphatase.
INTERNATIONAL JOURNAL OF PEST MANAGEMENT
(2021)
Article
Parasitology
Ahmed Idowu Omotayo, Adeolu Taiwo Ande, Adedayo Olatunbosun Oduola, Olukayode James Adelaja, Oluwakemi Adesalu, Tawakalitu Romoke Jimoh, Abdullahi Idowu Ghazali, Samson Taiwo Awolola
Summary: Malaria is a significant public health challenge in Africa, particularly in Nigeria. The development and spread of insecticide resistance in malaria vectors have been a major obstacle to control efforts. This study investigated the resistance mechanisms in Anopheles coluzzii populations from different areas in Lagos, Nigeria, and found high resistance to insecticides.
Article
Agronomy
R. Arif Malik Ramadhan, Neneng Sri Widayani, Danar Dono, Yusup Hidayat, Safri Ishmayana
Summary: This study investigated the resistance of S. litura populations from Karangpawitan and Lembang districts (West Java, Indonesia) against chlorpyrifos insecticides and their sensitivity to a botanical insecticide mixture. The results showed that the population from Lembang had a higher resistance to chlorpyrifos compared to Karangpawitan. Enzyme activity tests indicated that the resistance could be attributed to the increased activity of acetylcholinesterase, esterase, and glutathione s-transferase in the resistant populations.
Article
Entomology
Sudeep Ballav, Moytrey Chatterjee, Ashif Ali Sardar, Ushnish Guha, Subhasish Kamal Guha, Pabitra Saha, Ardhendu Kumar Maji
Summary: Regular monitoring of insecticide resistance among vector mosquitoes and their mechanism are important for effective vector control. The study in northern districts of West Bengal, India indicated evidence of metabolic resistance among major JE vectors. The development of resistance against different classes of insecticides among four major JE vector species is becoming a concern that should be closely monitored.
INTERNATIONAL JOURNAL OF TROPICAL INSECT SCIENCE
(2022)
