A5089751967- Plant and animal studies
- Insect and Arachnid Ecology and Behavior
- Insect-Plant Interactions and Control
- Animal Behavior and Reproduction
- Insect Resistance and Genetics
- Neurobiology and Insect Physiology Research
- Insect and Pesticide Research
- Agronomic Practices and Intercropping Systems
- Insect symbiosis and bacterial influences
- Insect Pest Control Strategies
- Insect Pheromone Research and Control
- Biological Control of Invasive Species
- Physiological and biochemical adaptations
- Insect behavior and control techniques
- Nematode management and characterization studies
- Avian ecology and behavior
- Plant Parasitism and Resistance
- Insects and Parasite Interactions
- Hemiptera Insect Studies
Tohoku Agricultural Research Center
2019-2025
National Agriculture and Food Research Organization
2021-2025
Mie University
2018-2021
The reproductive division of labor is a fundamental characteristic eusociality; thus, understanding the caste determination system underlying would shed more light on evolution eusociality. In this review, we summarize factors associated with in temperate Polistes paper wasps and focus life histories loss or maintenance plasticity during adult stage among eusocial Hymenoptera. many species Hymenoptera, trajectories are differentiated by nutrition larval stages, indicating that either absent...
Abstract An undersowing system with additional intercropping of flowering plants was assessed in field trials Germany and Japan to estimate regulating effects on pests possible negative white cabbage ( Brassica oleracea var. capitata ). In particular, we tested undersown wheat Triticum aestivum L.) plus sweet alyssum Lobularia maritima L. Desv.) intercropping. Counts the aphid species Brevicoryne brassicae (L.) Myzus persicae (Sulzer), as well related predators plants, were determined....
Abstract Adult females of the primitively eusocial wasp Polistes jokahamae can change caste in response to photoperiod length. Short-day store more lipids but have less developed ovaries for hibernation (becoming gynes), whereas long-day fewer lipid stores under queenless conditions egg-laying workers). To explore physiological mechanisms underlying photoperiod-related determination, analyses gene expression levels brains short- or were performed. Results suggest that short-day may exhibit...
Abstract The effects of two possible factors, prevention pest immigration and enhancement natural enemies, in suppressing onion thrips, Thrips tabaci L., were estimated a small-scale experimental system spring-planted onions intercropped with barley. population dynamics the thrips their potential predatory enemies investigated four treatments: control (bare ground), insect net barrier, onion-barley intercropping or without trimming. We found that significantly suppressed thrips. It is...
How the role of dopamine differs according to evolution eusociality and how it is required in flexible society Polistes paper wasps need further clarification. In present study, we compared storage usage dopamine-related substances brains between castes wasps. The head widths, lipid stores abdomen, levels biogenic amines were measured newly emerged females before male emergence (workers) after (gynes) four species. widths significantly larger gynes than workers P. snelleni, rothneyi,...
The behaviors performed on the nest by foundress queen and workers of paper wasp Polistes jokahamae were observed in three colonies field one colony a cage set field. Each was rarely ranked top dominance hierarchy determined pairwise dominance–subordinate interactions did not display more frequent direct aggression toward top-ranked worker than other workers. Furthermore, exhibited less frequently most aggressive all four colonies. order among positively correlated with emergence order,...
Abstract The larval parasitoid Diadegma hiraii (Kusigemati) was evaluated as a potential biological control agent of the soybean pod borer, Leguminivora glycinivorella (Matsumura). timing adult emergence after overwintering ascertained, and land-use factors that enhance population density were analyzed. Host cocoons collected exposed to different temperatures photoperiod regimes. Subsequently, monitored. Land-use types categorized into 4 (Poaceae, Fabaceae, Brassicaceae, forest). Adult...
We examined the susceptibility of two populations soybean pod borer, Leguminivora glycinivorella Matsumura(Lepidoptera: Tortricidae), in Tottori Prefecture to five insecticides: diamides(chlorantraniliprole and flubendiamide), organic phosphorus(MEP), synthetic pyrethroid(etofenprox), neonicotinoid(acetamiprid). For both populations, we detected decreasing diamides pyrethroid, phosphorus neonicotinoid were highly toxic. Soybean farmers use chlorantraniliprole etofenprox, but not...
Abstract Background Inter-regional relationships between landscape factors and biological responses in natural conditions are important but difficult to predict because of the differences each context local environment. To examine inter-regional variability relation response an insect pest rice, Stenotus rubrovittatus , we extrapolated a damage prediction model (the ‘original model’ our previous study) for rice using land-use data. The comprised as fixed area source habitat (i.e. pastures...
Abstract ContextInter-regional relationships between landscape factors and biological responses under natural conditions are important but difficult to predict because of the differences in each context local environment. ObjectivesTo examine inter-regional variability relation response an insect pest, we extrapolated a damage prediction model (‘the original model’) for rice using land-use data. We hypothesized that would be applicable new regions, predictive accuracy reduced. predicted...
Abstract The effects of ovipositing female body size on the survival first and second offspring under self conspecific superparasitism have not been determined. Here, we report importance females for three intervals (0, 1, 24 h) between ovipositions using a semi‐solitary ectoparasitoid, Echthrodelphax fairchildii, fourth‐instar nymphs its host, planthopper Laodelphax striatellus . We addressed case in which parasitoid eggs were laid different sides same host. killed previous sting, but when...