A5045418240- Entomopathogenic Microorganisms in Pest Control
- Insect Pest Control Strategies
- Insect Resistance and Genetics
- Nematode management and characterization studies
- Insect-Plant Interactions and Control
- Parasite Biology and Host Interactions
- Insect and Pesticide Research
- Insect symbiosis and bacterial influences
- Insect behavior and control techniques
- Forest Insect Ecology and Management
- Neurobiology and Insect Physiology Research
- Invertebrate Immune Response Mechanisms
- Genetics, Aging, and Longevity in Model Organisms
- Insect Utilization and Effects
- Mosquito-borne diseases and control
- Insect and Arachnid Ecology and Behavior
- Plant Disease Management Techniques
- Insects and Parasite Interactions
- Malaria Research and Control
- Plant Parasitism and Resistance
- Legume Nitrogen Fixing Symbiosis
- Research on scale insects
- Bioenergy crop production and management
- Mollusks and Parasites Studies
- Weed Control and Herbicide Applications
University of Idaho
2017-2025
University of California, Davis
2008-2017
Institute of Entomology
2008-2015
University of California System
2005-2015
Virginia Tech
2000-2008
University of California, Riverside
2005
University of California, Berkeley
2005
Rutgers, The State University of New Jersey
1992-2003
Rütgers (Germany)
2002
Rutgers Sexual and Reproductive Health and Rights
2002
SUMMARY Foraging strategies of eight species entomopathogenic nematodes were predicted from their response to host volatile cues and dispersal behaviour on 2-dimensional substrates. Positive directional chemical similar distances travelled smooth (agar) or nictation substrates (agar overlaid with sand grains) by Heterorhabditis bacterio-phora, megidis, Steinernema anomali , glaseri suggest cruising approach finding hosts. The absence less distance substrate, than agar carpocapsae scapterisci...
SUMMARY Search behaviour of two entomopathogenic nematode species with different foraging strategies was compared by measuring parameters unrewarded search after contact host cues. Steinernema glaseri cruises in hosts. carpocapsae ambushes Nematodes should respond to relevant cues shifting their from ranging localized them. We predicted that cruising foragers rely on chemical more heavily than ambushers. These were also tested for affinities. tracked image analysis exposure faeces, cuticle...
Two species of entomopathogenic nematodes, an ambush forager (Steinernema carpocapsae) and a cruising (S. glaseri), were assayed for their responses to volatiles associated with Galleria mellonella (Insecta: Lepidoptera). The nematodes six host-associated volatile treatments assayed. Live G. mellonella, live the cuticular hydrocarbons removed, carbon dioxide dead from S. exiqua feces in Y-tube choice aparatus. Steinernema glaseri attracted only producing dioxide. carpocapsae showed no...
Malaria (Plasmodium spp.) kills nearly one million people annually and this number will likely increase as drug insecticide resistance reduces the effectiveness of current control strategies. The most important human malaria parasite, Plasmodium falciparum, undergoes a complex developmental cycle in mosquito that takes approximately two weeks begins with invasion midgut. Here, we demonstrate increased Akt signaling midgut disrupts parasite development concurrently duration mosquitoes are...
There are many locations where soil quality improvements would be beneficial because of contamination, erosion, flooding, or past human activities. Miscanthus, a C-4 grass related to sugarcane, grows well in mildly contaminated and on sites is poor, particularly with respect nitrogen. Because its high biomass yield, it interest as an energy crop, plant use for simultaneous crop production phytoremediation. Here we review recent literature using miscanthus combined phytoremediation marginal...
Abstract Continuous cropping changes soil physiochemical parameters, enzymes and microorganism communities, causing “replant problem” in strawberry cultivation. We hypothesized that nematode community would reflect the conditions caused by long-term continuous cropping, ways are consistent predictable. To test this hypothesis, we studied communities several including concentration of phenolic acids, organic matter nitrogen levels, greenhouse under continuous-cropping for five different...
Parasitism is a major ecological niche for variety of nematodes. Multiple nematode lineages have specialized as pathogens, including deadly parasites insects that are used in biological control. We sequenced and analyzed the draft genomes transcriptomes entomopathogenic Steinernema carpocapsae four congeners (S. scapterisci, S. monticolum, feltiae, glaseri). these to establish phylogenetic relationships, explore gene conservation across species, identify genes uniquely expanded insect...
Infectivity is an important measure of virulence in insect pathogens. The proportion entomopathogenic nematodes that invaded a host, Galleria mellonella (L.), was used as infectivity 2 species nematodes: Steinernema carpocapsae (Weiser) and Heterorhabditis bacteriophora Poinar. We compared between emerging directly from cadavers into sand with were applied to aqueous suspensions after collection White trap. Assay arenas consisted 10 G. larvae petri dishes filled moist sand. After 20 or 44 h...
Malaria parasites alter mosquito feeding behaviour in a way that enhances parasite transmission. This is widely considered prime example of manipulation host to increase onward transmission, but transient immune challenge the absence can induce same behavioural phenotype. Here, we show alterations depend on timing and dose relative blood ingestion these changes are functionally linked insulin signalling gut. These results suggest altered phenotypes derive from signalling-dependent resource...
Top‐down population regulation can influence the success of biological control agents when they are released into field. Entomopathogenic nematodes ( EPN s) used commonly in programmes, but their efficacy suffers from poor persistence. Although abiotic soil conditions have been shown to reduce persistence, consumption infected insects by scavengers and infective juvenile IJ ) predators may also regulate these populations. In present study, effects different arthropods on s laboratory were...
A new species of the family Alloionematidae was isolated from a rotten winged gourd at White Crane Garden, San Francisco, USA, sampled by Christopher Nelson in November 2010, and live culture is deposited Félix Lab Strain Database (http://www.justbio.com/worms/index.php), IBENS, Paris, France. Specimens have been examined. Both morphologically molecularly, nematode described herein as Alloionema californicum n. sp. differs other alloionematid species, A. appendiculatum Neoalloionema...
Entomopathogenic nematodes (EPNs) have a specialized infective juvenile stage (IJ) that is mobile and has the capability to seek insect hosts penetrate their haemocoel. EPNs are primarily applied soil as biological control agents; thus, IJs must move through find infect host. Soil characteristics known be an important factor can affect efficiency of EPN movement behavior. Previous research shown exposure ascaroside pheromones enhance infectivity in soil. The ability efficacy was recently...