A5004057808- Insect-Plant Interactions and Control
- Insect Resistance and Genetics
- Insect and Pesticide Research
- Insect Pest Control Strategies
- Insect symbiosis and bacterial influences
- Insect behavior and control techniques
- Entomopathogenic Microorganisms in Pest Control
- Insect Utilization and Effects
- Plant and animal studies
- Invertebrate Immune Response Mechanisms
- Plant Parasitism and Resistance
- Insects and Parasite Interactions
- Insect and Arachnid Ecology and Behavior
- Neurobiology and Insect Physiology Research
- Berry genetics and cultivation research
- Biological Control of Invasive Species
- Viral Infectious Diseases and Gene Expression in Insects
- Dermatological diseases and infestations
- Plant-Microbe Interactions and Immunity
- Nanoparticles: synthesis and applications
- Plant Disease Management Techniques
- Hymenoptera taxonomy and phylogeny
- Traditional and Medicinal Uses of Annonaceae
- Plant Virus Research Studies
- Agricultural pest management studies
University of Hawaiʻi at Mānoa
2020-2024
University of Hawaii System
2022-2024
Pennsylvania State University
2015-2021
Simon Fraser University
2010-2019
University of British Columbia
2008-2010
Plants produce suites of defenses that can collectively deter and reduce herbivory. Many target the insect digestive system, with some altering protective peritrophic matrix (PM) causing increased permeability. The PM is responsible for multiple functions, including reducing infections from potential pathogenic microbes. In our study, we developed axenic gnotobiotic methods fall armyworm ( Spodoptera frugiperda ) tested how particular members present in gut community influence interactions...
Abstract BACKGROUND: The obliquebanded leafroller, Choristoneura rosaceana Harris, and the cabbage looper, Trichoplusia ni Hübner, are serious fruit vegetable pests requiring multiple insecticide applications per year. To reduce non‐target exposure to hazardous insecticides curb resistance development, alternative controls required. Accordingly, a selection of 17 essential oils was screened against both lepidopteran pests, influence azinphos‐methyl on oil toxicity C. studied. RESULTS: Of...
Summary Transgenerational effects are often assumed to have adaptive value as a driver of variation in offspring and parental fitness. Studies transgenerational focus on single environmental variables. However, nature, it is unlikely for one factor vary independently from others there likely be trade‐offs between different stressors. We altered the nutritional environment both parents examine how stress influences immune priming ( TGIP ) with sublethal challenge by bacterial pathogen B...
Beneficial alleles that spread rapidly as an adaptation to a new environment are often associated with costs reduce the fitness of population in original environment. Several species insect pests have evolved resistance Bacillus thuringiensis (Bt) toxins field, jeopardizing its future use. This has most commonly occurred through alteration midgut binding sites specific for Bt toxins. While related been recorded, mechanisms behind them remained obscure. We asked whether alters dietary...
Abstract Specialist and generalist pathogens may exert different costs on their hosts; thereby altering the way hosts cope with environmental variation. We examined how pathogen-challenge alters conditions that maximize host performance by simultaneously varying temperature nutrition (protein to carbohydrate ratio; P:C) after exposure two baculoviruses; one is specific cabbage looper, Trichoplusia ni (TnSNPV) another has a broad range (AcMNPV). Virus-challenged larvae performed better more...
Evolved resistance to xenobiotics and parasites is often associated with fitness costs when the selection pressure absent. Resistance widely used microbial insecticide Bacillus thuringiensis (Bt) has evolved in several insect species through modification of midgut binding sites for Bt toxins, reports are common. Studies on Bt-resistance restrict a single artificial diet or host-plant. However, it well documented that insects can self-select appropriate proportions multiple nutritionally...
Control of Zeugodacus cucurbitae, a serious agricultural pest worldwide, often includes or is dependent on the use spinosad-based insecticides. This especially case in Hawaii, where GF-120, protein bait containing spinosad as active ingredient, has been key integrated management (IPM) tool against this Tephritid for last two decades. Here, we report resistance to [resistance ratios (RRs) and median lethal concentration (LC
Insecticide resistance among invasive tephritid fruit flies poses a great risk to national food security and has the potential disrupt quarantine eradication programs, which rely on efficacy of Spinosad prevent widespread establishment in North America. During 2022 2023 we surveyed extent two key species, oriental fly Bactrocera dorsalis, melon Zeugodacus cucurbitae, from 20 sites across five Hawaiian Islands including Kaua'i, O'ahu, Maui, Molokai "Big Island" (Hawai'i).
1. The aerial surface of plants is a habitat for large and diverse microbial communities; termed the phyllosphere. These microbes are unavoidably consumed by herbivores, while entomopathogens well studied, impact non‐pathogenic bacteria on herbivore life history less clear. 2. Previous work has suggested that consumption non‐entomopathogenic induces costly immune response might decrease risk infection. However, we hypothesised insect herbivores should be selective in how they respond to...
Abstract We have previously determined that larval feeding experience with a feeding/oviposition deterrent modified the responses of larvae and oviposition subsequent moths. These behavioural changes were attributed to learning, but possibility chemical legacy could not be ruled out. In present study, we topically applied plant extract from Hoodia gordonii (Masson) Sweet ex Decne (Asclepiadaceae) larvae, pupae, adults Trichoplusia ni (Hübner) (Lepidoptera: Noctuidae) determine whether...