A5078426600- Insect-Plant Interactions and Control
- Insect behavior and control techniques
- Insect and Pesticide Research
- Insect Pest Control Strategies
- Forest Insect Ecology and Management
- Insect Resistance and Genetics
- Insect and Arachnid Ecology and Behavior
- Insect Utilization and Effects
- Plant and fungal interactions
- Plant and animal studies
- Phytoplasmas and Hemiptera pathogens
- Insect symbiosis and bacterial influences
- Plant Virus Research Studies
- African Botany and Ecology Studies
- Plant Physiology and Cultivation Studies
Oregon State University
2017-2024
Horticultural Crops Research Laboratory
2024
University of Vienna
2022
Commonwealth Scientific and Industrial Research Organisation
2015-2019
Cotton Research and Development Corporation
2016-2019
Agriculture and Food
2018-2019
Macquarie University
2015-2019
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) also known as spotted-wing drosophila (SWD), is a pest native to Southeast Asia. In the last few decades, has expanded its range affect all major European and American fruit production regions. SWD highly adaptive insect that able disperse, survive, flourish under of environmental conditions. Infestation by generates both direct indirect economic impacts through yield losses, shorter shelf life infested fruit, increased costs. Fresh...
Drosophila suzukii (Matsumura; Diptera: Drosophilidae) is a key pest of sweet cherry and small fruits worldwide. The present studies were designed to describe the reproductive physiology in both sexes, through dissections their organs. We extensively dissected female D. throughout season from 2013 2016 classified status flies based on five recognizable ovarian maturation stages: 1) no ovaries; 2) unripe ovaries 3) ripening eggs ovarioles; 4) mature 5) abdomen. Development was examined as...
Drosophila suzukii Matsumura is an invasive species affecting berry crops and cherries throughout North America, South Europe. Previous research suggests that in temperate climates, the overwintering success of D. likely dependent on access to food, shelter, adequate cold hardening. We performed a multi-state study under field conditions for two winters determine whether sex, phenotype (summer-morphotype, winter-morphotype), life stage (adults, pupae) affected survival over time while...
Psyllids (Hemiptera: Psylloidea) are phloem-feeding insects that tend to be highly specific in their host plants. Some species well-known agricultural pests, often as vectors of plant pathogens. Many pest psyllids colonize fields from non-crop reproductive hosts or non-host transitory and winter shelter Uncertainty about which serve sources hinders efforts predict orchards at greater risk being colonized by psyllids. High-throughput sequencing trnL, trnF, ITS was used examine the dietary...
Pear psylla and honeydew marking to fruit cause significant economic damage pears in Washington, a key pear growing region of the United States. The goal this project is compare an integrated pest management (IPM) program using materials which selectively target pests relies on large natural enemy populations grower standard conventional organic management. In six locations throughout three techniques organic, IPM were designated 2 ha plots managed orchards. Natural monitored beat tray, leaf...
Abstract Drosophila suzukii, or spotted-wing drosophila, is now an established pest in many parts of the world, causing significant damage to numerous fruit crop industries. Native East Asia, D. suzukii infestations started United States a decade ago, occupying wide range climates. To better understand invasion ecology this pest, knowledge past migration events, population structure, and genetic diversity needed. In study, we sequenced whole genomes 237 individual flies collected across...
Overhead sprinkler compared to drip irrigation in cropping systems can result increased relative humidity (RH) and decreased temperature within the plant canopy. Such conditions may also a more favorable microclimate for pests. Drosophila suzukii Matsumura is an invasive agricultural pest of berries America Europe. susceptible high temperatures low RH, thus its survival be affected by different methods. We tested how overhead blueberries influenced RH. Furthermore, we determined these...
Fruit growers largely depend on chemical control to reduce populations of the economically damaging invasive fly, Drosophila suzukii (Matsumura). is susceptible high temperatures and low humidity; therefore, it may be possible implement cultural practices that create microclimates unfavorable for its development survival. In addition other fruit production benefits, in-row mulches impede D. immatures when larvae leave pupate in soil. This study compared effects different (black polypropylene...
Wolf spiders are abundant and voracious predators at the soil-plant interface in cotton crops. Among other prey, they attack late-instar larvae of bollworm Helicoverpa spp., an economically important pest. Consequently, wolf transgenic Bt could provide significant biological control Bt-resistant that descend to soil pupate. The predator-prey interactions between could, however, be constrained by presence alternative prey intraguild predators. This study used laboratory enclosures analyse...
Abstract Invasive animals depend on finding a balanced nutritional intake to colonize, survive, and reproduce in new environments. This can be especially challenging during situations of fluctuating cold temperatures food scarcity, but phenotypic plasticity may offer an adaptive advantage these periods. We examined how lifespan, fecundity, pre‐oviposition periods, body nutrient contents were affected by dietary protein carbohydrate (P:C) ratios at variable low two morphs (winter WM summer...
Abstract Larvae of the cotton bollworm, H elicoverpa armigera (H übner) ( L epidoptera: N octuidae) that survive on genetically modified Bt G ossypium hirsutum ., M alvaceae) contribute to risk widespread resistance toxins. Current management techniques include pupae busting, which involves deep tilling soil kill overwintering pupae. Unfortunately, busting runs counter and water conserving techniques, such as minimum tillage. This problem could be relieved with biological control methods,...
Life history parameters are used to estimate population dynamics, mortality, and reproduction in insects relative their surrounding environment. For Drosophila suzukii Matsumura (Diptera: Drosophilidae), an invasive agricultural pest, previous studies have estimated net reproductive rate (Ro), generation time (T), intrinsic of increase (rm). A main limitation is that these estimates were measured under relatively favorable settings, do not reflect environmental conditions physiological...
Wolf spiders (Lycosidae) are the most abundant ground-hunting in Australian cotton ( Gossypium hirsutum L.) agroecosystems. These have potential controlling pest bollworms, Helicoverpa spp. (Lepidoptera: Noctuidae) minimum-tilled fields. A study was carried out during a wet growing season (2011–2012) Narrabri, New South Wales, Australia, to determine how different crop rotations and tillage affect wolf spider assemblages Spider abundance species richness did not differ significantly between...
Abstract Transgenerational effects abound in animals. While a great deal of research has been dedicated to the maternal stressors such as diet deficiency, social deprivation or predation risk on offspring phenotypes, we have poor understanding adaptive value transgenerational spanning across multiple generations under benign conditions and relative weight multigenerational effects. Here show that grandparental parental experiences combine with personal early-life learning form foraging...
Abstract Drosophila suzukii Matsumura is an economically important pest of small and stone fruits. Its establishment in the Americas Europe marked turning point crop management programs. Ten years after its first detection, effective integrated program has yet to be developed pesticides are mainly used control this pest. Here we test a new behavioral tool, with aim develop alternative strategy. A food-grade gum matrix, was evaluated under controlled open field conditions for ability attract...
Abstract Native parasitoids are potential tools for the biological control of invasive exotic pests, such as frugivorous flies spotted‐wing drosophila, Drosophila suzukii Matsumura, and African fig fly, Zaprionus indianus Gupta (both Diptera: Drosophilidae). Following invasions, establishment species may be restricted, among other things, by their susceptibility to native or established natural enemies. The Neotropical‐native pupal endoparasitoid Trichopria anastrephae Costa Lima...
Abstract Red maple seedlings transplanted in spring must grow vertically quickly and insecticides are applied to prevent meristem damage. While sprays have achieved desired results, sustainable options being sought. Methyl salicylate (MeSA) is a common herbivore-induced plant volatile that available as commercial lure attract natural enemies into farms. We conducted 2-year field study determine if MeSA-treated plots had more enemies, fewer insect pests, less The only enemy detected...
Thesis by publication.%%%%%%%%%%%%1. Influence of crop management and environmental factors on wolf spider assemblages (Araneae: Lycosidae) in an Australian cotton cropping system – 2. Ecological molecular approaches for assessing common prey Helicoverpa larva consumption spiders a Bt-cotton field 3. Consumptive non-consumptive effects bollworms 4. Intraguild interactions between two species lead to non-additive the biological control bollworm 5. Prey encounter, vulnerability nutritional...
Abstract Multiple predator species that coexist with each other and their mutual prey can have combined effects on mortality are similar to the sum of predator's individual impact (linear effects), greater than (risk enhancement), or less reduction). Understanding multiple is important determine predators pest in agroecosystems. If two share same broad spatial domain hunting mode engage intraguild predation, then combination expected result risk reduction for a prey. We tested this...
ABSTRACT Drosophila suzukii , or spotted-wing drosophila, is now an established pest in many parts of the world, causing significant damage to numerous fruit crop industries. Native East Asia, D. infestations started United States a decade ago, occupying wide range climates. To better understand invasion ecology this pest, knowledge past migration events, population structure, and genetic diversity needed. improve on previous studies examining structure we sequenced whole genomes 237...