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Full-Text Articles in Life Sciences
Effects Of Food Deprivation, Age, Time Of Day, And Gamma Irradiation On Attraction Of Mexican Fruit Flies (Diptera: Tephritidae) To Two Synthetic Lures In A Wind Tunnel, David C. Robacker
Effects Of Food Deprivation, Age, Time Of Day, And Gamma Irradiation On Attraction Of Mexican Fruit Flies (Diptera: Tephritidae) To Two Synthetic Lures In A Wind Tunnel, David C. Robacker
Entomology Papers from Other Sources
The physiological condition of Mexican fruit flies, Anastrepha ludens (Loew), affected their attraction to 2 similar but qualitatively different synthetic lures in wind-tunnel bioassays. The 2 lures were BioLure (ammonium acetate and putrescine) and AMPu (ammonium carbonate, methylamine HCI, and putrescine) . Effects of food deprivation on attraction to the lures were smaller than the effects of sex, time of day, and irradiation. Sugar-fed, protein-starved flies were attracted more strongly than other hunger-status groups to the lures. Sugar-starved, protein-starved females were less responsive than other groups of females to AMPu. Protein-starved males were more responsive than protein-fed males to BioLure. …
Distribution Of The Tarnished Plant Bug (Heteroptera: Miridae) Within Cotton Plants, Gordon Snodgrass
Distribution Of The Tarnished Plant Bug (Heteroptera: Miridae) Within Cotton Plants, Gordon Snodgrass
Entomology Papers from Other Sources
The within-plant distribution of the tarnished plant bug, Lygus lineolaris (Palisot de Beauvois), in cotton, Gossypium hirsutum L., was determined during June through the 1st week in August in 1992 and 1993 at Stoneville, MS. Locations of adults and nymphs in cotton were determined weekly using visual searches of whole plants or plant sections (mainstem terminals, upper and lower plant halves below the mainstem terminals). The distributions of adults and nymphs found in the morning (0900-1100 hours) in 1992 were not significantly different from their distributions found in the afternoon (1300-1500 hours). Adults had a significantly different distribution than nymphs …
Depth Of Pupation And Survival Of Fruit Fly (Anastrepha Spp.: Tephritidae) Pupae In A Range Of Agricultural Habitats, P. Jane Hodgson, L John Sivinski, Gemma Quintero, Martin Aluja
Depth Of Pupation And Survival Of Fruit Fly (Anastrepha Spp.: Tephritidae) Pupae In A Range Of Agricultural Habitats, P. Jane Hodgson, L John Sivinski, Gemma Quintero, Martin Aluja
Entomology Papers from Other Sources
In central Veracruz State, Mexico, tephritid fruit fly pupae are commonly attacked by ants, staphylinid beetles, and other predators. Excavations in 2 sites with different soil characteristics revealed that Anastrepha spp. (Diptera: Tephritidae) larvae typically burrowed no >2 cm before pupating and rarely burrowed >5 cm. At 4 field sites, pupae of the most commonly encountered local Anastrepha sp. (A. obliqua, ludens, and striata or fraterculus) were placed on the soil surface and at depths of 2.5 and 5 cm and were subsequently sampled daily for 10 d. Pupae on the surface invariably disappeared at a greater …
Efficacy Of Maxforce Bait For Control Of The Argentine Ant (Hymenoptera: Formicidae) In Haleakala National Park, Maui, Hawaii, Paul D. Krushelnycky, Neil J. Reimerz
Efficacy Of Maxforce Bait For Control Of The Argentine Ant (Hymenoptera: Formicidae) In Haleakala National Park, Maui, Hawaii, Paul D. Krushelnycky, Neil J. Reimerz
Entomology Papers from Other Sources
In an effort to develop a chemical control strategy for the invasive Argentine ant. Linepithema humile (Mayr), in Haleakala National Park, Maxforce, which is formulated with 0.9% hydramethylnon, was used in test plots to determine the efficacy of the ant bait in the field. Initially, Maxforce was tested at 2 application rates: broadcast at 2.25 kg/ha (2 lb/ acre) and 4.5 kg/ha (4 lb/acre). Later, the following treatments were also tested: a Maxforce and honey granule mix, Maxforce with 0.5% hydramethylnon, Maxforce with a different solvent, Maxforce distributed in exposed piles, and Maxforce distributed in covered piles. Although there were …
Herbivore Adaptations To A Low-Nutrient Food: Weed Biological Control Specialist Spodoptera Pectinicornis (Lepidoptera: Noctuidae) Fed The Floating Aquatic Plant Pistia Stratiotes, G. S. Wheeler, T. K. Van, T. D. Center
Herbivore Adaptations To A Low-Nutrient Food: Weed Biological Control Specialist Spodoptera Pectinicornis (Lepidoptera: Noctuidae) Fed The Floating Aquatic Plant Pistia Stratiotes, G. S. Wheeler, T. K. Van, T. D. Center
Entomology Papers from Other Sources
Performance of the specialist herbivore Spodoptera pectinicomis (Hampson) was studied when fed the floating aquatic plant waterlettuce, Pistia stratiotes L. (Araceae). Plants were either collected from 6 populations in southern Florida or from plants grown with low or high fertilizer levels. Consumption of leaves with increasing toughness resulted in increased larval mortality (>80%); most mortality occurred during the first 2 instars. Larvae compensated for low-nitrogen leaves by increasing fresh weight consumption 3-fold. Both developmental time and biomass gain were effected by the source of the plants but these performance parameters were not directly related to either leaf toughness or …
Using Ant Species (Hymenoptera: Formicidae) As A Biological Indicator Of Agroecosystem Condition, Steven L. Peck, Betty Mcquaid, C. Lee Campbell
Using Ant Species (Hymenoptera: Formicidae) As A Biological Indicator Of Agroecosystem Condition, Steven L. Peck, Betty Mcquaid, C. Lee Campbell
Entomology Papers from Other Sources
Ant species assemblages have been used as biological indicators of environmental condition in many different ecosystems. To assess the potential of using ants as environmental indicators of agroecosystem condition, ants were collected from a stratified random sample of agricultural fields planted in annually harvested herbaceous crops at 90 sites in North Carolina and Virginia. The ants were identified to species and correlations with soil, management and crop variables were examined as the 1st step in developing an environmental indicator of agroecosystem condition. A total of 41 species of ants was found. Ant species assemblages were found to differ significantly between …
Relationship Of Gypsy Moth (Lepidoptera: Lymantriidae) Egg Mass Age To Persistence And Color, And An Evaluation Of Two Methods To Distinguish New And Old Egg Masses, Kevin W. Thorpe
Entomology Papers from Other Sources
It is necessary to distinguish new and old gypsy moth, Lymantria dispar (L.), egg masses when conducting gypsy moth population surveys. Egg masses within reach from the ground are touched to determine if they contain unhatched eggs and thus are considered new. The following 2 methods are used for egg masses not within reach: (1) visual discrimination between new and old egg masses or (2) by calculating the percentage of new egg masses at ground level and using this value to adjust counts of all egg masses not within reach. To evaluate these methods, egg-mass persistence and color between generations, …
Influence Of Soybean Canopy Closure On Predator Abundances And Predation On Helicoverpa Zea (Lepidoptera: Noctuidae) Eggs, Aaron C. Anderson, Kenneth V. Yeargan
Influence Of Soybean Canopy Closure On Predator Abundances And Predation On Helicoverpa Zea (Lepidoptera: Noctuidae) Eggs, Aaron C. Anderson, Kenneth V. Yeargan
Entomology Papers from Other Sources
Planting soybeans [Glycine max (L.) Merrill early and in narrow rows is the most effective cultural control for preventing outbreaks of Helicoverpa zea (Boddie) in soybean. Soybeans planted early in narrow rows close canopy earlier in the season compared with soybeans planted late and in wide rows (i.e., leaves of plants from adjacent rows touch each other and eventually become densely interwoven). Although several lines of research have established dramatically higher mortality for corn earworm eggs or small larvae in closed canopies, none has found the cause. In 1994 and 1995, we planted soybeans in every combination of early …
What Mosquitos Smell These Days, David A. Carlson
What Mosquitos Smell These Days, David A. Carlson
Entomology Papers from Other Sources
The CIBA Foundation sponsored a symposium on olfaction in mosquito-host interactions in London (31 October-2 November 1995) at the suggestion of John Hildebrand, of the University of Arizona. Given my own interest in this topic, I was curious about the resulting volume, to which some of the major workers in the field contributed.
An Immunomarking Technique For Labeling Minute Parasitoids, James Hagler, Charles Jackson
An Immunomarking Technique For Labeling Minute Parasitoids, James Hagler, Charles Jackson
Entomology Papers from Other Sources
A laboratory study was conducted to examine the efficacy of a novel immunomarking technique on Anaphes iole Girault, a minute parasitoid of Lygus spp. eggs. Adult A. iole were marked with the readily available mammal protein, rabbit immunoglobulin G (IgG), by 3 different application methods. Adult parasitoids were marked internally by feeding them a honey solution spiked with rabbit IgG and externally by contact exposure or topical mist. Marked individuals were then assayed using a sandwich enzyme-linked immunosorbent assay (ELISA) for the presence of the IgG marker using an antibody specific to rabbit IgG (antirabbit IgG developed in goat) . …
Bait Preference By The Argentine Ant (Hymenoptera: Formicidae) In Haleakala National Park, Hawaii, Paul D. Krushelnycky, Neil J. Reimer
Bait Preference By The Argentine Ant (Hymenoptera: Formicidae) In Haleakala National Park, Hawaii, Paul D. Krushelnycky, Neil J. Reimer
Entomology Papers from Other Sources
The Argentine ant, Linepithema humile (Mayr), has proven to be a threat to native arthropod species in Haleakala National Park, Maui, HI, and is also a potential threat to the park's native flora. As it continues to expand its range, an effort has been undertaken to eradicate it, or at the least, control its spread. The 1st part of this effort focused on finding a bait carrier for subsequent toxicant-based control tests. A year-long bait preference test was implemented at each of the ant's 2 infestation sites in Haleakala National Park, in which 6 solid baits and 2 liquid baits …
Dispersal And Longevity Of Mass-Released, Sterilized Mexican Fruit Flies (Diptera: Tephritidae), Donald B. Thomas, Jesus Loera-Gallardo
Dispersal And Longevity Of Mass-Released, Sterilized Mexican Fruit Flies (Diptera: Tephritidae), Donald B. Thomas, Jesus Loera-Gallardo
Entomology Papers from Other Sources
Trap-back experiments using McPhail traps were conducted to study dispersal and longevity of mass-released, sterile Mexican fruit flies, Anastrepha ludens (Loew). The flies were released at 3 ecologically different sites in northern Mexico. Some flies were recaptured up to 9 km from the release point. However, standard distance was estimated using a regression model that indicated 240 m was the typical dispersal distance. The life expectancy of the released flies from the time of release varied from 5 to 10 d. Greatest longevity, up to 22 wk, occurred during the winter months.
Developing Mating Disruption Of Obliquebanded Leafroller (Lepidoptera: Tortricidae) In Washington State, A. L. Knight, D. R. Thomson, S. D. Cockfield
Developing Mating Disruption Of Obliquebanded Leafroller (Lepidoptera: Tortricidae) In Washington State, A. L. Knight, D. R. Thomson, S. D. Cockfield
Entomology Papers from Other Sources
Field studies were conducted from 1992 to 1996 to select the most effective sex pheromone blend for mating disruption of the obliquebanded leafroller, Choristoneura rosaceana (Harris), in tree fruit orchards in Washington. Dispensers loaded with a 2-component pheromone blend, (Z)-1l-tetradecen-1-yl (Zll-14:0Ac) and (E)-1l-tetradecen-1-yl (Ell-14:0Ac), a 3-component blend that included the addition of (Z)-ll-tetradecenal (Zll-14:Ald), and a 4-component blend also including (Z)-1l-tetradecen-1-o1 (Zll-14:0H) were compared within O.l-ha orchard plots and 100-m2 field cages. The addition ofZll-14:Ald to the 2 acetate components with or without Zll-14:0H did not improve mating or disruption of communication. No disruption occurred in field cages treated …
Dose-Response And Age- And Temperature-Related Susceptibility Of The Diamondback Moth (Lepidoptera: Plutellidae) To Two Isolates Of Beauveria Bassiana (Hyphomycetes: Moniliaceae), John D. Vandenberg, Mark Ramos, Jennifer Altre
Dose-Response And Age- And Temperature-Related Susceptibility Of The Diamondback Moth (Lepidoptera: Plutellidae) To Two Isolates Of Beauveria Bassiana (Hyphomycetes: Moniliaceae), John D. Vandenberg, Mark Ramos, Jennifer Altre
Entomology Papers from Other Sources
Two isolates of Beauveria bassiana (Balsamo) Vuillemin were used in bioassays against the diamondback moth, Plutella xylostella (L.). One isolate, ARSEF 4543, originated from a diamondback moth larva collected in New York and the other, Mycotech CHA, is the active ingredient in Mycotrol, a product registered for control of insect species belonging to several orders. Doseresponse assays of suspended spores sprayed on larvae resulted in similar LD50S (518 and 614 spores per square centimeter for ARSEF 4543 and Mycotech CHA, respectively) but different slopes for the probit regression lines (0.64 and 0.89). Survival times for larvae inoculated at …
Geostatistical Characterization Of The Spatial Distribution Of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Emergence, M. M. Ellsbury, W. D. Woodson, S. A. Clay, D. Malo, J. Schumacher, D. E. Clay, C. G. Carlson
Geostatistical Characterization Of The Spatial Distribution Of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Emergence, M. M. Ellsbury, W. D. Woodson, S. A. Clay, D. Malo, J. Schumacher, D. E. Clay, C. G. Carlson
Entomology Papers from Other Sources
Geostatistical methods were used to characterize spatial variability in western (Diabrotica virgifera virgifera LeConte) and northern (Diabrotica barberi Smith & Lawrence) corn rootworm adult emergence patterns. Semivariograms were calculated for adult emergence density of corn rootworm populations in fields of continuous corn and rotated (corn/ soybean) corn. Adult emergence densities were generally greater for northern corn rootworms than for western corn rootworms. The spatial structures of the adult rootworm emergence were aggregated as described by spherical spatial models for western corn rootworm and exponential models for northern corn rootworm. Range of spatial dependence varied from 180 to 550 …
Host Specificity Of Bangastemus Orientalis Capiomont (Coleoptera: Curculionidae) Introduced Into The United States For Biological Control Of Yellow Starthistle (Centaurea Solstitialis L., Asteraceae: Carduae), Gaetano Campobasso, Rouhollah Sobhian, Lloyd Knutson, Gianni Terragitti
Host Specificity Of Bangastemus Orientalis Capiomont (Coleoptera: Curculionidae) Introduced Into The United States For Biological Control Of Yellow Starthistle (Centaurea Solstitialis L., Asteraceae: Carduae), Gaetano Campobasso, Rouhollah Sobhian, Lloyd Knutson, Gianni Terragitti
Entomology Papers from Other Sources
The weevil Bangastemus orientalis Capiomont was selected as a candidate for the biological control of Centaurea solstitialis L. (yellow starthistle) in the United States. Its potential host range was studied during 1982, 1983, and 1984 in Rome, Italy, using populations collected from C. solstitialis in Thermi near Thessaloniki and Kozani in northern Greece. Adults laid eggs only on members of the genus Centaurea and the thistle Onopordum acanthium; eggs laid on O. acanthium hatched but 1st instars died before entering buds. There was no significant difference in the number of eggs laid on various U.S. and Italian strains of …
Impact Of Temperature And Humidity On Host-Pathogen Interactions Between Beauveria Bassiana And A Coccinellid, R. R. James, B. A. Croft, B. T. Shaffer, B. Lighthart
Impact Of Temperature And Humidity On Host-Pathogen Interactions Between Beauveria Bassiana And A Coccinellid, R. R. James, B. A. Croft, B. T. Shaffer, B. Lighthart
Entomology Papers from Other Sources
We tested the effect of 2 exposure methods and 2 environmental factors, temperature and humidity, on Beauceria bassiana (Deuteromycotina: Hyphomycetes) mycosis in Hippodamia convergens Guerin-Meneville (Coleoptera: Coccinellidae). We found that the standard EPA bioassay method of exposing nontarget insects by immersion resulted in a per-insect dose that was 5 times greater than that from spray applications. However, this difference did not significantly affect mycosis levels in a simulation of field applications conducted in the greenhouse. In contrast, differences in environmental conditions between the laboratory and greenhouse had a large effect on mycosis. Constant temperatures between 15 and 35°C had a …
Monitoring Solitary Bees In Modified Wildland Habitats: Implications For Bee Ecology And Conservation, Gordon Frankie, Robbin W. Thorp, Linda E. Newstrom-Lloyd, Mark A. Rizzardi, John F. Barthell, Terry L. Griswold, Jong-Yoon Kim, Shanthi Kappagoda
Monitoring Solitary Bees In Modified Wildland Habitats: Implications For Bee Ecology And Conservation, Gordon Frankie, Robbin W. Thorp, Linda E. Newstrom-Lloyd, Mark A. Rizzardi, John F. Barthell, Terry L. Griswold, Jong-Yoon Kim, Shanthi Kappagoda
Entomology Papers from Other Sources
The long-term goal of this study was to use solitary bees to assess the impact of advancing Africanized honey bees (Apis mellifcra scutellata Lepeletier) on the native California bee fauna. Cavity-nesting, solitary bee species were systematically monitored in wooden trap nests at 6 sites in northern central California from 1990 to 1992. Three sites were in the San Joaquin Valley in wildlife refuges or preserves; 3 were in coastal mountain or Sierran foothill parks or reserves. Differences in frequencies of nesting bees were observed and recorded among sites and habitats through time. A Poisson regression indicated that all explanatory …
Oviposition Response Of Cotesia Plutellae (Hymenoptera: Braconidae) To Sterile And Normal Diamondback Moth (Lepidoptera: Plutellidae) Larvae, J. S. Okine, E. R. Mitchell, J. Carpenter, C. Y. Hu
Oviposition Response Of Cotesia Plutellae (Hymenoptera: Braconidae) To Sterile And Normal Diamondback Moth (Lepidoptera: Plutellidae) Larvae, J. S. Okine, E. R. Mitchell, J. Carpenter, C. Y. Hu
Entomology Papers from Other Sources
Augmentative release of the endoparasitoid Cotesia plutellae (Kurdjumov) to control diamondback moth, Plutella xylostella (L.), in cabbage, Brassica oleracea variety capitata (L.), would be expensive for growers if done continually during a growing season. A method for establishing released parasitoids would be very beneficial in the control of this pest. One method under consideration is to use sterile diamondback moth larvae deposited on 'nursery' collard plants as hosts for C. plutellae to allow the parasitoid to build up in numbers and spread into adjacent cabbage fields. Therefore, the ability of C. plutellae to accept and develop successfully in normal and …
Reverting Conservation Reserve Program Lands To Wheat And Livestock Production: Effects On Ground Beetle (Coleoptera: Carabidae) Assemblages, B. Wade French, Norman C. Elliott, Richard C. Berberet
Reverting Conservation Reserve Program Lands To Wheat And Livestock Production: Effects On Ground Beetle (Coleoptera: Carabidae) Assemblages, B. Wade French, Norman C. Elliott, Richard C. Berberet
Entomology Papers from Other Sources
Highly erodible lands enrolled in the Conservation Reserve Program soon will revert to agricultural production. This study was designed to determine the effects of reversion of Conservation Reserve Program lands to wheat and livestock production on ground beetle assemblages. Reversion strategies included no reversion of Conservation Reserve Program grass (unmanaged bluestem), simulated grazing of Conservation Reserve Program grass (managed bluestem), minimum- tillage practices for wheat production, and no-tillage practices for wheat production. A randomized block experimental design was established with 4 replicates. More ground beetles were captured in pitfall traps in 1995 than in 1996, and abundances within years differed …
Chemical Attractants For Trapping Yellow Jackets Vespula Germanica And Vespula Pensylvanica (Hymenoptera: Vespidae), Peter Landolt
Chemical Attractants For Trapping Yellow Jackets Vespula Germanica And Vespula Pensylvanica (Hymenoptera: Vespidae), Peter Landolt
Entomology Papers from Other Sources
Worker yellowjackets (Hymenoptera: Vespidae) were captured in traps baited with combinations of an aqueous solution of acetic acid and polyethylene caps loaded with either butyl butyrate, heptyl butyrate, or isobutanol. Vespula germanica (F.) were captured in large numbers in traps baited with acetic acid and isobutanol or acetic acid and butyl butyrate. Vespula pensylvanica (Saussure) were captured in large numbers in traps baited with heptyl butyrate, acetic acid and heptyl butyrate, acetic acid and butyl butyrate, and acetic acid and isobutanol. Acetic acid generally enhanced the attractiveness of these other compounds to V. pensylvanica and V germanica. Vespula atropilosa …
Selectivity Of Whitefly Traps In Cotton For Eretmocerus Eremicus (Hymenoptera: Aphelinidae), A Native Parasitoid Of Bemisia Argentifolii (Homoptera: Aleyrodidae), K. A. Hoelmer, W. J. Roltsch, E. C. Chu, T. J. Hekneberry
Selectivity Of Whitefly Traps In Cotton For Eretmocerus Eremicus (Hymenoptera: Aphelinidae), A Native Parasitoid Of Bemisia Argentifolii (Homoptera: Aleyrodidae), K. A. Hoelmer, W. J. Roltsch, E. C. Chu, T. J. Hekneberry
Entomology Papers from Other Sources
Yellow sticky traps are widely used for monitoring and management of whiteflies and certain other pests and have also been used to monitor their natural enemy activity. A new, nonsticky whitefly trap (CC trap), standard yellow sticky cards, and clear colorless sticky cards were evaluated in cotton (Gossypium hirsutum L.) to compare their attractiveness to Eretmocerus eremicus Rose and Zolnerowich, an aphelinid parasitoid of Bemisia argentifolii Bellows & Perring [=Bemisia tabaci (Gennadius) B-strain 1 that is indigenous to southwestern U.S. deserts. The CC traps caught an average of 264 adult whiteflies during 24-h test periods compared with 523 …