Article
Agronomy
Maria K. Sakka, Christos T. Nakas, Dionysis Bochtis, Christos G. Athanassiou
Summary: Phosphine resistance was evaluated in 23 populations of Tribolium castaneum from 10 different countries. High levels of resistance were found in populations from Brazil, Serbia, and Spain. Eight populations showed no survival after 7 days post exposure.
PEST MANAGEMENT SCIENCE
(2023)
Article
Agronomy
Paraskevi Agrafioti, Daniel L. Brabec, William R. Morrison, James F. Campbell, Christos G. Athanassiou
Summary: Exposure to phosphine had significant effects on the behavior and movement responses of Tribolium castaneum and Rhyzopertha dominica adults, with the highest mortality at the highest concentration, faster recovery in resistant populations, and significant differences in mobility between susceptible and resistant populations.
PEST MANAGEMENT SCIENCE
(2021)
Article
Entomology
Maria K. Sakka, Rajeswaran Jagadeesan, Manoj K. Nayak, Christos G. Athanassiou
Summary: The study showed that heat treatment in commercial flour and rice mills has the potential to effectively control major pest species with high adult mortality and suppressed progeny mortality, regardless of their susceptibility to phosphine.
JOURNAL OF STORED PRODUCTS RESEARCH
(2022)
Article
Entomology
Daniel Brabec, William Morrison, James Campbell, Frank Arthur, Alex Bruce, Kathleen Yeater
Summary: This study evaluated the accuracy of dosimeter tubes in monitoring phosphine fumigation treatments. The high-range dosimeter tube measured within ? 25% of the phosphine monitoring sensors for CT dosages less than 70,000 ppm*hr, while the low-range tube tended to over-estimate phosphine CT dosage by 50%-100%. For susceptible strains, CT dosages of 5000 ppm*hr controlled both species, but the insect control varied for resistant adults at CT dosages of -20,000 ppm*hr. The dosimeter tubes function well within these ranges, with model LPG-1 providing reasonable estimates of the fumigation dosage.
JOURNAL OF STORED PRODUCTS RESEARCH
(2021)
Article
Entomology
Georgia V. Baliota, Christos G. Athanassiou, Lee W. Cohnstaedt
Summary: Laboratory studies found that UV light was consistently more attractive to adults of both phosphine-resistant and susceptible populations of cigarette beetles, regardless of sex, mating status, or presence of food. Mated adults of both populations displayed similar responses to different light colors, suggesting that natural behavioral variation in photo attraction was not affected by phosphine resistance. This information is crucial for the development and implementation of light and pheromone traps for monitoring the activity of cigarette beetles in storage and processing facilities globally.
JOURNAL OF STORED PRODUCTS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Carmen Lopez, Daniela Zanga, Alejandro Juarez-Escario, Pilar Munoz, Matilde Eizaguirre
Summary: The addition of vitamin A to diets with or without Bt toxin did not have any beneficial effect on both the larvae and their offspring of Helicoverpa armigera. However, adult mating success was higher in larvae fed on the Bt diet, and a certain adaptive effect to the toxin was observed as the mortality rate of larvae from previous generations fed on the Bt diet was lower. These findings are important for the development of resistance of this species to the Bt toxin.
Article
Computer Science, Artificial Intelligence
Martin Magris, Alexandros Iosifidis
Summary: The last decade has seen a growing interest in Bayesian learning, but its technicality and complexity in practical implementations have limited its widespread adoption. This survey introduces the principles and algorithms of Bayesian Learning for Neural Networks from a practical perspective, discussing standard and recent approaches for Bayesian inference. It also explores the use of manifold optimization as a state-of-the-art approach and provides pseudo-codes for implementation.
ARTIFICIAL INTELLIGENCE REVIEW
(2023)
Article
Multidisciplinary Sciences
Xin Yang, Xuegao Wei, Jing Yang, Tianhua Du, Cheng Yin, Buli Fu, Mingjiao Huang, Jinjin Liang, Peipan Gong, Shaonan Liu, Wen Xie, Zhaojiang Guo, Shaoli Wang, Qingjun Wu, Ralf Nauen, Xuguo Zhou, Chris Bass, Youjun Zhang
Summary: The study reveals the significant role of m(6)A modification in regulating a gene associated with insecticide resistance in the global whitefly pest Bemisia tabaci. This finding sheds light on the biological function of m(6)A in insects and provides a new avenue for investigating the development of insecticide resistance.
Review
Biochemistry & Molecular Biology
Saad M. Alzahrani, Paul R. Ebert
Summary: Phosphine is widely used for fumigating stored grains due to a lack of better alternatives, but its extensive use has led to insect pests developing resistance. Understanding the mode of action and resistance mechanisms of phosphine can help improve its efficacy and pest control strategies. Laboratory studies have shown treatments that enhance phosphine toxicity, which may be used to suppress resistance development and enhance efficacy.
CURRENT ISSUES IN MOLECULAR BIOLOGY
(2023)
Article
Chemistry, Analytical
Fuxing Kang, Wei Yang, Mengwen Guo, Lars Borregaard Pedersen, Lars Peter Nielsen
Summary: Monitoring PH3 flux at the Earth's surface-atmosphere interface is a challenging task. A new amperometric PH3 microsensor with high selectivity and sensitivity is developed for in situ detection in aquatic or sedimentary environments. The sensor uses a Au-coated Pt working electrode and a Pt guard electrode, and employs a two-layer silicone membrane to selectively oxidize PH3 into H3PO4, producing a current proportional to the PH3 concentration (>2 nmol center dot L-1). The sensor is designed to eliminate interferences from H2S and other gases, making it suitable for environmental monitoring. A sedimentary profile example demonstrates the presence of high PH3 accumulations 13 mm below the sediment surface.
ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Yasuharu Takaku, Katsumi Shiraki, Chiaki Suzuki, Sayuri Takehara, Hiroyuki Nishii, Tomonori Sasaki, Takahiko Hariyama
Summary: This study investigates the spreading pathways of pesticide-mimicking test solutions in experimental insects by tracking the elemental signals using NanoSuit and energy dispersive X-ray spectroscopy. The study reveals that the solution tends to spread horizontally when adhered to the dorsal and/or ventral body surface, but spreads to posterior segments when adhered to the anterior side of the lateral plates. However, spreading in the opposite direction is interrupted by fine structures at the posterior segments.
SCIENTIFIC REPORTS
(2023)
Article
Agronomy
Maria K. Sakka, Konstantinos Mavridis, Kyriaki Maria Papapostolou, Maria Riga, John Vontas, Christos G. Athanassiou
Summary: This study developed a high-throughput molecular diagnostic method for monitoring phosphine resistance in stored product insects. The results showed variation in the frequency of resistance mutations among populations from different regions, indicating the need for further research and confirmation.
PEST MANAGEMENT SCIENCE
(2023)
Review
Biology
Steve Kett, Ayush Pathak, Stefano Turillazzi, Duccio Cavalieri, Massimiliano Marvasi
Summary: Arthropods are able to produce a variety of antifungal compounds, but some taxa, particularly eusocial insects, also acquire additional compounds through mutualistic associations with microbes. These associations have been maintained for over 50 million years, indicating the continued effectiveness of the compounds and suggesting potential strategies for reducing antifungal resistance in clinical settings.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Changyan Li, Wenjun Zha, Wei Li, Jianyu Wang, Aiqing You
Summary: Secondary metabolism in plants, particularly terpenoids, play a crucial role in mediating bio-interactions and protecting plants. Terpenoids are important in the interactions between plants, microorganisms, and animals, and have both ecological and economic significance. This review paper focuses on various aspects of terpenoids, including their biosynthesis, regulation, ecological functions, and research prospects.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Entomology
Roberta Moruzzo, Simone Mancini, Fabio Boncinelli, Francesco Riccioli
Summary: This paper focuses on Italian consumers and their acceptance of insect-based food, showing that there is a certain phobia towards this novel practice that can be controlled with appropriate commercialization strategies. The need for a specific scale to measure insect phobia is confirmed, as there is limited knowledge about consumer preferences and barriers to using insects as human food sources. The development of insect-based food offers physical health benefits and improves the sustainability of the food industry.
Review
Entomology
Manoj K. Nayak, Gregory J. Daglish, Thomas W. Phillips, Paul R. Ebert
ANNUAL REVIEW OF ENTOMOLOGY, VOL 65
(2020)
Article
Entomology
Myrna Constantin, Rajeswaran Jagadeesan, Kerri Chandra, Paul Ebert, Manoj K. Nayak
JOURNAL OF ECONOMIC ENTOMOLOGY
(2020)
Article
Entomology
Gregory J. Daglish, Rajeswaran Jagadeesan, Manoj K. Nayak, Graham A. McCulloch, Virgine T. Singarayan, Gimme H. Walter
JOURNAL OF ECONOMIC ENTOMOLOGY
(2020)
Article
Biochemistry & Molecular Biology
Rajeswaran Jagadeesan, David I. Schlipalius, Virgine T. Singarayan, Nisa S. Nath, Manoj K. Nayak, Paul R. Ebert
Summary: The rusty grain beetle, Cryptolestes ferrugineus, exhibits very high levels of resistance to the fumigant phosphine, primarily due to the unique variants L73N and A355G + D360H within the gene dld. These variants can occur alone or in a mixture in resistant strains, conferring strong resistance. The conservation of these variants between Australian and Chinese resistant strains highlights their importance in the development of resistance.
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Maria K. Sakka, Maria Riga, Panagiotis Ioannidis, Georgia Baliota, Martha Tselika, Rajeswaran Jagadeesan, Manoj K. Nayak, John Vontas, Christos G. Athanassiou
Summary: This study identified potential molecular mechanisms contributing to resistance to s-methoprene in R. dominica through transcriptome analysis and laboratory bioassays. The results suggest that cytochrome P450s may play a role in this resistance, with the cytochrome P450 inhibitor PBO effectively breaking resistance in the pest.
Article
Entomology
Virgine T. Singarayan, Rajeswaran Jagadeesan, Manoj K. Nayak, Paul R. Ebert, Gregory J. Daglish
Summary: This study investigated the fitness cost associated with phosphine resistance in the rusty grain beetle, Cryptolestes ferrugineus. The results showed that strongly phosphine resistant strains did not incur significant fitness costs under suboptimal conditions, which will have implications for pest management strategies.
JOURNAL OF PEST SCIENCE
(2021)
Article
Entomology
E. Afful, Aaron Cato, Manoj K. Nayak, Thomas W. Phillips
Summary: Resistance to the fumigant phosphine in stored product insect pests is a global issue. A bioassay developed by the FAO for diagnosing resistance is impractical for routine monitoring, leading to the utilization of a commercial resistance detection test kit for rapid detection in field populations of lesser grain borer. Results suggest that a KT100 test is better than KT50 and KTsingle tests, and higher concentrations of phosphine lead to quicker recovery times in strongly resistant populations.
JOURNAL OF STORED PRODUCTS RESEARCH
(2021)
Article
Entomology
Gregory J. Daglish, Rajeswaran Jagadeesan, Manoj K. Nayak
Summary: The study demonstrates that a cooling temperature of 17 degrees Celsius is most effective in managing the infestation of the cowpea weevil in stored mungbeans. The optimal temperature for population growth for the two laboratory strains is estimated to be 32.2 and 33.7 degrees Celsius, respectively.
JOURNAL OF STORED PRODUCTS RESEARCH
(2021)
Article
Agronomy
Sonu K. Singh, Rajeswaran Jagadeesan, Sonai Rajan Thangaraj, Upasna Selvapandian, Manoj K. Nayak, Mohankumar Subbarayalu
Summary: Dose response analysis showed that Delta-R strains of Sitophilus oryzae were 134-fold more resistant than Lab-S strains at median lethal concentration (LC50). Exposure to 180 ppm and 1000 ppm concentrations over 48 hours effectively discriminated weakly and strongly resistant populations, respectively, based on resistance percentages and presence of distinct resistance phenotypes. Sequence analysis of the vgsc gene confirmed a single target mutation, T929I, causing resistance in S. oryzae and supports the phenotypic data, indicating prevalence of deltamethrin resistance in southern India.
PEST MANAGEMENT SCIENCE
(2021)
Article
Agronomy
Rajeswaran Jagadeesan, Virgine T. Singarayan, Manoj K. Nayak
Summary: The study revealed an effective co-fumigation strategy of sulfuryl fluoride (SF) with phosphine (PH3) for controlling strongly PH3-resistant rusty grain beetles. Simultaneous and sequential co-fumigations with lower than current application rates of both fumigants resulted in complete control of adults and eggs.
PEST MANAGEMENT SCIENCE
(2021)
Article
Agronomy
Joanne C. Holloway, Madeleine Barton, Rachel Wood, Hazel R. Parry
Summary: The ladybird Harmonia conformis has a significant impact on the suppression of the green peach aphid, especially at higher temperatures. The predation rate of H. conformis increases with the density of M. persicae, showing potential for inclusion in integrated pest management systems.
PEST MANAGEMENT SCIENCE
(2022)
Article
Agronomy
Samantha Elizabeth Ward, Paul A. Umina, Hazel Parry, Amber Balfour-Cunningham, Xuan Cheng, Thomas Heddle, Joanne C. Holloway, Caitlin Langley, Dustin Severtson, Maarten Van Helden, Ary A. Hoffmann
Summary: Field observed parasitism rates of green peach aphid were compared to laboratory observed parasitism rates, and it was found that laboratory rates were on average 2.4 times higher. The incidence of mummies and reared parasitoids increased as the crop growth stage progressed. The study highlights the limitations of relying solely on field mummy counts to assess parasitism in canola fields.
PEST MANAGEMENT SCIENCE
(2022)
Article
Entomology
Xingyu Li, Robert N. Emery, Grey T. Coupland, Yonglin Ren, Simon J. McKirdy
Summary: The research reveals the potential introduction and establishment of the false codling moth in Australia, posing a serious threat to the country's agricultural and horticultural industries. Prediction and early detection are key in preventing its spread.
Article
Entomology
Maria K. Sakka, Rajeswaran Jagadeesan, Manoj K. Nayak, Christos G. Athanassiou
Summary: The study showed that heat treatment in commercial flour and rice mills has the potential to effectively control major pest species with high adult mortality and suppressed progeny mortality, regardless of their susceptibility to phosphine.
JOURNAL OF STORED PRODUCTS RESEARCH
(2022)
Article
Entomology
Manoj K. Nayak, Rajeswaran Jagadeesan, Virgine T. Singarayan, Nisa S. Nath, Hervoika Pavic, Brock Dembowski, Gregory J. Daglish, David I. Schlipalius, Paul R. Ebert
Summary: Despite advanced phosphine resistance monitoring and management programs in Australia, the tropical northern region of the continent has received little attention. Sampling and resistance testing of insect populations in grain storages in northern Queensland revealed varying levels of resistance, highlighting the need for a more comprehensive study on pest populations and resistance risks in this area.
JOURNAL OF STORED PRODUCTS RESEARCH
(2021)