A5078765083- Forest Insect Ecology and Management
- Insect Pest Control Strategies
- Hemiptera Insect Studies
- Date Palm Research Studies
- Insect Pheromone Research and Control
- Botany and Geology in Latin America and Caribbean
- Biological Control of Invasive Species
- Insect and Pesticide Research
- Insect-Plant Interactions and Control
- Lepidoptera: Biology and Taxonomy
- Plant and animal studies
- Identification and Quantification in Food
- Insect and Arachnid Ecology and Behavior
- Species Distribution and Climate Change
- Insect Resistance and Genetics
- Scarabaeidae Beetle Taxonomy and Biogeography
- Research on scale insects
- Food Supply Chain Traceability
- Invertebrate Taxonomy and Ecology
- Mosquito-borne diseases and control
- Hymenoptera taxonomy and phylogeny
- Dengue and Mosquito Control Research
- Botany, Ecology, and Taxonomy Studies
- Coconut Research and Applications
- Advanced Aircraft Design and Technologies
University of Guam
2012-2023
Eastern Mennonite University
2022
Washington State University
2007
University of Hawaii System
1989-1992
Two new species of gall-inducing wasps, Selitrichodes casuarinae Fisher & La Salle sp. n. and utilis n., are described from Micronesia (Guam, Rota Palau Islands) Australia respectively. These induce galls on Casuarina can cause extensive damage to the trees. Their status as pest or beneficial is discussed.
An optical sensor was used to make digital recordings of wingbeat waveforms for the five most common aphids found on Guam: Aphis craccivora Koch, A. gossypii Glover, nerii Fonscolombe, Pentalonia nigronervosa Coquerel, and Toxoptera citricida (Kirkaldy). Wingbeat frequencies each species overlapped all other species. However, mean were significantly different harmonic patterns extracted from submitted cluster analysis, which failed separate completely. Several nearest neighbor probabilistic...
A microcomputer-based instrument was designed to record and analyze flight movements of individual insects flying through a light beam. In an experiment with Aedes aegypti (L.) A. triseriatus Say, species sex individuals were identified correctly accuracy 84% using wingbeat frequency measurements. This technology may be useful in automated monitoring the field.
Coconut rhinoceros beetle (CRB; Oryctes [L.]; Coleoptera: Scarabaeidae) grubs feed only on decaying vegetation and usually are found in dead standing coconut trees debris the ground. However, Guam, a significant proportion of CRB population develops detritus caught within crowns live palms. This habitat extension may be due to almost total absence predation by insectivorous birds mammals as result heavy brown tree snake, Boiga irregularis (Bechsterin) (Squamata: Colubridae).
The cycad aulacaspis scale ( Aulacaspis yasumatsui Takagi) has invaded numerous geographic regions in the past 15 years. sequential invasions have decimated many Cycas nursery and landscape industries threatened C. micronesica K.D. Hill taitungensis C.F. Shen, Hill, C.H. Tsou C.J. Chen within their native habitats. majority of international trade is dominated by revoluta Thunberg. We removed dense tomentum that characterizes cataphylls excised intact leaf bases from stems plants to expose...
Adult diamondback moths, Plutella xylostella (L.), often autotomize one or both metathoracic legs after tarsal contact with insecticide residues. Moths that dropped walking on fenvalerate residues had lower mortality and higher recovery from knockdown than those did not autotomize. In experiments 14C-labeled (250 ng/cm2), the concentration of metabolites was significantly in moths (310 ± 26 ppb [x SEM]) (392 23 ppb). The autotomized more 10 times greater moth bodies. Two laboratory colonies...
Oryctes rhinoceros (L.) (Coleoptera: Scarabaeidae: Dynastinae) causes economically important damage to ornamental and commercial coconut palm trees in the western Pacific region that could be mitigated significantly by early detection treatment. Adults are difficult detect visually because they attack crowns of feed internally before mating dispersing new hosts. Visual inspection is nevertheless most widely used method, augmented with pheromone traps. This species an ideal candidate for...
Container-grown Cycas micronesica seedlings were purposefully infested with Aulacaspis yasumatsui and then installed at 0, 75, or 150 cm above the ground to investigate effects of infestation height on predation by Rhyzobius lophanthae . Significantly more scales elevated attacked predator. Our results indicate that lower level R. may partly explain why predator is not effectively controlling this armored scale epidemic Guam. Ephemeral outbreaks A. documented in quarterly surveys from Sept....
The eggplant mealybug, Coccidohystrixinsolita (Green) (Hemiptera: Pseudococcidae), is recorded from the island of Guam in Mariana Islands for first time. Factors indicating that this introduced mealybug has potential to become a pest economic importance agriculture and horticulture on are discussed.
The coconut rhinoceros beetle, Oryctes L., is a serious pest of and other palms throughout Southeast Asia on several Pacific Islands. Adults damage sometimes kill when they bore into the crown to feed. In contrast, larvae feed only dead plant material at breeding sites. Typically, beetle populations are controlled with combination biocontrol, pheromone traps, site removal. A field trial was performed two locations Guam test feasibility using Judas technique, releasing radio-tagged adults...
Abstract 7Massive fires in Indonesian peatlands the 1990s and eastern Russian 2002 last year have highlighted need to manage forests overlying peat deposits, as well converted open peatlands. Peat or peaty soils, contain 65% more of partially decayed vegetation, can burn freely underground. They cover some 10 percent worldwide 25 all terrestrial carbon. Recent massive greenhouse gas (GHG) emissions from forested peatland Indonesia Russia highlight for policies reduce GHG emissions. We...
Up to 74% of adult diamondback moths, Plutella xylostella (L.), autotomized one or both metathoracic legs after tarsal contact with insecticide residues. In bioassays fenvalerate, the LC50, was 478 ng/cm2, and autotomy response peaked at 100 ng/cm2. Scanning electron microscopy showed a smooth abscission joint between trochanter femur. comparison moths retaining all their legs, those that recovered faster from knockdown. Leg in insects thought be primarily mechanism for escaping entrapment,...
We recently described threats to the terrestrial biological resources on Mariana islands of Guam and Tinian resulting from large-scale buildup military operations. Attitudes that view these plans in a zero sum context whereby positives greater security improved local economy can be attained only with corresponding negatives environmental destruction are prevalent. argue attitudes oversimplify complicated interactions between operations damage. Here we discuss aspects our case study would...