Article
Entomology
Qing Yang, Jinping Liu, Kris A. G. Wyckhuys, Yizhong Yang, Yanhui Lu
Summary: This study investigated the effects of different temperatures on the survival, reproduction, predation, and antioxidant capacity of two ladybug species. The results showed that elevated temperatures had a greater impact on one species, while the other species had a higher predation rate on aphid prey. In addition, the antioxidant capacity of both species was significantly affected by ambient temperature.
Article
Entomology
Shuying Dou, Bing Liu, Yangtian Liu, Jianping Zhang, Yanhui Lu
Summary: Intraguild predation between natural enemies can affect population dynamics and biological control effectiveness. This study investigated the feeding choices of Hippodamia variegata towards cotton aphid mummies and found no obvious preference for live aphids or mummies. The results showed that Aphis gossypii was the main prey source and medium of consumption for H. variegata. These findings are important for evaluating the pest control ability of H. variegata and strengthening biological control strategies.
Article
Entomology
Samy Sayed, Sayed-Ashraf Elarrnaouty, Saad AlOtaibi, Mohamed Salah
Summary: Integrated pest management should use compatible control agents, as chemical pesticides can have negative effects on natural enemies and beneficial microorganisms. The study aimed to evaluate the pathogenicity of an indigenous Beauveria bassiana isolate on two predatory coccinellids, showing no significant negative effects on the predators. Different application methods of the fungus did not have adverse effects on the mortality or biological parameters of the coccinellids, indicating compatibility between the fungus and the predatory insects.
Article
Entomology
Petri C. Betsi, Dionysios Ch Perdikis
Summary: The effects of different pesticides on the survival and predation rate of M. pygmaeus were investigated. It was found that deltamethrin and Beauveria bassiana had high mortality rates, while the prey in the paraffin oil treatment were fully consumed the most. The assessment of prey consumption at different levels provides a sensitive approach to detect impacts and can be useful for integrated pest management programs.
Article
Agronomy
Shovon Chandra Sarkar, Stephen Paul Milroy, Wei Xu
Summary: The variegated lady beetle, Hippodamia variegata, shows potential as a biocontrol agent for the invasive pest, Bactericera cockerelli, and may contribute to improving current management strategies.
PEST MANAGEMENT SCIENCE
(2023)
Article
Agronomy
Yan Jiang, Chunli Xiu, Hongsheng Pan, Xiaoning Liu
Summary: Four active compounds (alpha-pinene, butyl isobutyrate, beta-pinene and butyl butyrate) identified from two damaged plant species were considered the most effective HIPVs that attract Hippodamia variegata. These findings provide possibilities for the development of Hippodamia variegata attractants. They also provide a theoretical basis for the biological prevention and control of aphids using Hippodamia variegata.
PEST MANAGEMENT SCIENCE
(2023)
Article
Agronomy
Panagiotis J. Skouras, Vasilis Demopoulos, Marina Mprokaki, Kostas Anagnostelis, Anastasios Darras, Vasileios Stournaras, Costas Delis, George J. Stathas
Summary: The study found that the peach aphid had moderate resistance to imidacloprid and deltamethrin, which may adversely affect ladybugs. Aphids, on the other hand, showed low resistance to the insecticides, but caution should still be taken in their use.
Article
Agriculture, Multidisciplinary
Haoyu Tang, Jiaoxin Xie, Jingtao Liu, Adel Khashaveh, Xiaoxu Liu, Chaoqun Yi, Danyang Zhao, Lin He, Yang Sun, Yongjun Zhang
Summary: A total of 12 OBPs were identified in the antennae of ladybird Hippodamia variegata. Among them, HvarOBP5 showed strong binding affinity to various semiochemicals and played an important role in perception. RNA interference of HvarOBP5 resulted in decreased responsiveness and behavioral preferences to specific semiochemicals in both male and female ladybirds, indicating its importance in prey and habitat plant perception.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Biotechnology & Applied Microbiology
Muhammad Rizwan, Shoaib Freed, Danish Batool, Afifa Naeem, Rizwan Ahmed, Muhammad Akmal
Summary: The cotton mealybug, Phenacoccus solenopsis Tinsley, is a highly invasive pest of cotton. The use of entomopathogenic fungi as a bio-pesticide could provide an alternative to current chemical control measures that preserve the environment and biodiversity, and ensures good quality of crops. Lethal, sub-lethal and trans-generational studies were conducted to assess the effects of myco-insecticides on such pests. The fungus Cordyceps fumosorosea was found to be the most effective against P. solenopsis, causing reduced nymphal duration, adult longevity, fecundity, and population growth parameters. The expression of detoxifying enzymes was also observed.
BIOCONTROL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Panagiotis J. Skouras, Eirini Karanastasi, Vasilis Demopoulos, Marina Mprokaki, George J. Stathas, John T. Margaritopoulos
Summary: The insecticide sulfoxaflor has a negative influence on the variegated ladybug, decreasing adult emergence percentage and survival. The LD50 of H. variegata due to sulfoxaflor decreased from 97.03 to 35.97 ng a.i. per insect. Overall, sulfoxaflor is slightly harmful to H. variegata.
Article
Agriculture, Multidisciplinary
Jiaoxin Xie, Tinghui Liu, Chaoqun Yi, Xiaoxu Liu, Haoyu Tang, Yang Sun, Wangpeng Shi, Adel Khashaveh, Yongjun Zhang
Summary: The study identified 37 odorant receptors (ORs) in the antennae of ladybird Hippodamia variegata, with HvarOR25 being specifically enriched. HvarOR25 was found to have a narrow tuning to six chemical ligands, and it showed attractive responses to four of these ligands in H. variegata. Molecular docking results indicated a high binding affinity between HvarOR25 and all ligands.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2022)
Article
Computer Science, Artificial Intelligence
Afsane Hosseini, Mojtaba Hosseini, Abbas Rohani, Shaneka Lawson
Summary: The protein and carbohydrate content in the diet of the predator variegated ladybug directly affects its reproduction fitness. Using a support vector machine (SVM) predictor, the study estimated the feeding and egg production of the ladybug based on the relationship between foraging and prey nutritional composition. The results showed that the quality of the prey significantly influenced the ladybug's feeding and reproduction efficiency.
NEURAL COMPUTING & APPLICATIONS
(2023)
Article
Toxicology
Pezhman Aeinehchi, Bahram Naseri, Hooshang Rafiee Dastjerdi, Gadir Nouri-Ganbalani, Ali Golizadeh
Summary: Thiacloprid had lethal effects on Schizaphis graminum and Hippodamia variegata, with LC50 values of 730.3 and 212.7 mg a.i.L-1 respectively. Sublethal concentrations negatively affected the demographic parameters of both insects, with LC30 treatments having a greater negative impact compared to LC10 treatments. The IOBC classification found that LC10 and LC30 treatments were harmless for H. variegata and slightly harmful for S. graminum, suggesting thiacloprid can be used in cereal fields where S. graminum and its predators are active.
Article
Environmental Sciences
Panagiotis J. Skouras, Eirini Karanastasi, Ioannis Lycoskoufis, Vasilis Demopoulos, Anastasios I. Darras, Athanasios Tsafouros, Polina C. Tsalgatidou, John T. Margaritopoulos, George J. Stathas
Summary: This study investigates the toxicity and sublethal effects of deltamethrin and imidacloprid on the coccinellid predator C. septempunctata in a laboratory microcosm and a greenhouse. Both insecticides reduced the reproductive capacity and longevity of C. septempunctata, and prolonged the developmental time of fourth instar larvae. Deltamethrin residues remained toxic to the larvae even 21 days after treatment, while imidacloprid became harmless after 21 days. These findings highlight the potential risks of deltamethrin and imidacloprid to C. septempunctata and provide important information for integrated pest management strategies in greenhouses.
Article
Entomology
Mariana Abreu Costa, Elizeu Sa Farias, Eliana Donizete Andrade, Vinicius Castro Carvalho, Geraldo Andrade Carvalho
Summary: This study assessed the effects of different chemical insecticides on Trichogramma pretiosum, a parasitoid wasp commonly used to control lepidopteran pests in cotton crops. The results showed that some insecticides had significant harmful effects on T. pretiosum, while teflubenzuron was the safest option.
JOURNAL OF PEST SCIENCE
(2023)
Article
Agronomy
Panagiotis J. Skouras, George J. Stathas, Vasilios Demopoulos, Giannis Louloudakis, John T. Margaritopoulos
Review
Entomology
John T. Margaritopoulos, A. N. Kati, C. Ch. Voudouris, P. J. Skouras, J. A. Tsitsipis
Summary: Studies have shown that the peach aphid in Greece has developed medium to high levels of resistance to multiple insecticides, with a significant increase in resistance to neonicotinoids over the past decade. The difficulty in controlling the aphid makes the design and implementation of integrated pest management programs challenging. Resistant populations of the aphid emphasize the dynamic nature of resistance, requiring continuous monitoring over time and space.
BULLETIN OF ENTOMOLOGICAL RESEARCH
(2021)
Article
Agronomy
Anastasios I. Darras, Panagiotis J. Skouras, Panagiotis Assimomitis, Chara Labropoulou, George J. Stathas
Summary: UV-C irradiation had a negative impact on Macrosiphum rosae population, reducing it by up to 58% and enhancing plant resistance against insect pests. It did not affect the physiological responses of rose plants and helped in rapidly decreasing aphid population.
Article
Agronomy
Fillothei Papadimitriou, Maria Folia, Aris Ilias, Polyxeni Papapetrou, Emmanouil Roditakis, Chris Bass, John Vontas, John T. Margaritopoulos
Summary: Aphid clones from tobacco and peach in Greece exhibited different levels of resistance to flupyradifurone, with higher resistance observed in clones from peach. Acetamiprid resistance was mainly detected in clones collected from 2019-2020 samples. A significant but moderate association between responses to flupyradifurone and acetamiprid was observed.
PEST MANAGEMENT SCIENCE
(2022)
Article
Agronomy
Panagiotis J. Skouras, Vasilis Demopoulos, Marina Mprokaki, Kostas Anagnostelis, Anastasios Darras, Vasileios Stournaras, Costas Delis, George J. Stathas
Summary: The study found that the peach aphid had moderate resistance to imidacloprid and deltamethrin, which may adversely affect ladybugs. Aphids, on the other hand, showed low resistance to the insecticides, but caution should still be taken in their use.
Article
Entomology
Panagiotis J. Skouras, Anastasios Darras, Marina Mprokaki, Vasilios Demopoulos, John T. Margaritopoulos, Costas Delis, George J. Stathas
Summary: The study investigated the toxicity and sublethal effects of imidacloprid and deltamethrin on the aphidophagous coccinellid predator Ceratomegilla undecimnotata, and found that both insecticides negatively affected survival, development, reproduction, and longevity of the predator. The research highlights the importance of understanding the impact of insecticides on natural enemies in order to effectively incorporate them into Integrated Pest Management (IPM) strategies. Sublethal and low doses of imidacloprid and deltamethrin were found to significantly decrease population growth parameters of C. undecimnotata, indicating that caution should be exercised when using these insecticides within the context of IPM.
Article
Genetics & Heredity
Mike Darrington, Philip T. Leftwich, Neil A. Holmes, Lucy A. Friend, Naomi V. E. Clarke, Sarah F. Worsley, John T. Margaritopolous, Saskia A. Hogenhout, Matthew I. Hutchings, Tracey Chapman
Summary: This study investigates the gut microbiome of the Mediterranean fruit fly and finds that the presence of Klebsiella bacteria in the gut is primarily determined by the larval diet and shows resistance to antibiotic treatment. The genome analysis suggests that these bacteria may have developed a mutualistic association with the fruit fly and provide nutritional benefits.
MICROBIAL GENOMICS
(2022)
Article
Environmental Sciences
Panagiotis J. Skouras, Eirini Karanastasi, Vasilis Demopoulos, Marina Mprokaki, George J. Stathas, John T. Margaritopoulos
Summary: The insecticide sulfoxaflor has a negative influence on the variegated ladybug, decreasing adult emergence percentage and survival. The LD50 of H. variegata due to sulfoxaflor decreased from 97.03 to 35.97 ng a.i. per insect. Overall, sulfoxaflor is slightly harmful to H. variegata.
Article
Environmental Sciences
Panagiotis J. Skouras, Eirini Karanastasi, Ioannis Lycoskoufis, Vasilis Demopoulos, Anastasios I. Darras, Athanasios Tsafouros, Polina C. Tsalgatidou, John T. Margaritopoulos, George J. Stathas
Summary: This study investigates the toxicity and sublethal effects of deltamethrin and imidacloprid on the coccinellid predator C. septempunctata in a laboratory microcosm and a greenhouse. Both insecticides reduced the reproductive capacity and longevity of C. septempunctata, and prolonged the developmental time of fourth instar larvae. Deltamethrin residues remained toxic to the larvae even 21 days after treatment, while imidacloprid became harmless after 21 days. These findings highlight the potential risks of deltamethrin and imidacloprid to C. septempunctata and provide important information for integrated pest management strategies in greenhouses.
Article
Entomology
Argyro Kalaitzaki, Sama Awad, Eleni Malandraki, Polyxeni D. Papapetrou, Ioannis Livieratos, John T. Margaritopoulos
BULLETIN OF INSECTOLOGY
(2019)
