Friday, May 30, 2014

Certified Science May 2014


A Periodic ESA E-mail Service to ACEs and Urban-Industrial BCEs

The Entomological Society of America is the #1 source of scientific information for the entomologically-focused urban professional. This email is a service of the ESA for all ACEs and any BCEs who hold a specialty in urban and industrial entomology.

Here is a summary of some recent articles in the ESA journals that relate to structural pest management and urban arthropod pests. The abstracts are freely available online for all articles, though access to the full text will generally require membership in the ESA, in addition to your certification.

Tunneling and Food Transportation Activity of Four Subterranean Termite Species (Isoptera: Rhinotermitidae) at Various Temperatures
Authors: Cao, Runxin; Su, Nan-Yao
Source: Annals of the Entomological Society of America, Volume 107, Number 3, May 2014, pp. 696-701(6)
Abstract:  The effect of temperature on tunneling and food transportation activity of four subterranean termite species, Coptotermes formosanus Shiraki, Coptotermes gestroi (Wasmann), Reticulitermes virginicus (Banks), and Reticulitermes flavipes (Kollar), was examined. The experiment was conducted at 15, 20, 25, 30, and 35°C and ? 99% relative humidity (RH) using 10- by 10-cm planar arenas. Tunneling areas excavated by termites at 12 and 48 h were analyzed using ... ( Click here for full abstract)

Within-Field Spatial Distribution of Stink Bug (Hemiptera: Pentatomidae)-Induced Boll Injury in Commercial Cotton Fields of the Southeastern United States
Authors: Pulakkatu-Thodi, Ishakh; Reisig, Dominic D.; Greene, Jeremy K.; Reay-Jones, Francis P. F.; Toews, Michael D.
Source: Environmental Entomology, Volume 43, Number 3, June 2014, pp. 744-752(9)
Abstract:  Spatial distribution of boll injury caused by stink bugs to developing cotton (Gossypium hirsutum L.) bolls was studied in five commercial fields (?22 ha each) in 2011 and 2012 to understand variability in boll injury dynamics within fields. Cotton bolls and stink bugs were sampled weekly from a georeferenced grid of sampling points (one sample per 0.40 ha) in each field, but no samples were taken within 30 m of field edges. The inverse distance weighted interpolation, variogram analysis, and ... ( Click here for full abstract)

Bioactivity of Cedarwood Oil and Cedrol Against Arthropod Pests
Authors: Eller, F. J.; Vander Meer, R. K.; Behle, R. W.; Flor-Weiler, L. B.; Palmquist, Debra E.
Source: Environmental Entomology, Volume 43, Number 3, June 2014, pp. 762-766(5)
Abstract:  Heartwood samples from Juniperus virginiana L. were extracted with liquid carbon dioxide, and the bioactivity of carbon dioxide-derived cedarwood oil (CWO) toward several species of ants and cedrol toward ticks was determined. Repellency was tested for ants, and toxicity was tested for ticks. Ants in an outdoor bioassay were significantly repelled by the presence of CWO on a pole leading to a sugar-water solution. Similarly, CWO was a significant repellent barrier to red imported fire ants and prevented them from finding a typical food source. ( Click here for full abstract)

Durability of a Novel Durable Bait for Control of Subterranean Termites (Isoptera: Rhinotermitidae): Results of Five-Year Field Aging Studies
Authors: Eger, J. E.; Hamm, R. L.; Demark, J. J.; Chin-Heady, E.; Tolley, M. P.; Benson, E. P.; Zungoli, P. A.; Smith, M. S.; Spomer, N. A.
Source: Journal of Economic Entomology, Volume 107, Number 3, June 2014, pp. 1201-1205(5)
Abstract:  A durable termite bait containing 0.5% noviflumuron was evaluated for physical durability, retention of active ingredient, consumption by termites, and toxicity to termites over 5 yr in field studies at locations in Indiana, Mississippi, and South Carolina. Plots in Indiana and Mississippi included both natural rainfall and irrigated plots, while plots in South Carolina received only natural rainfall. Samples collected every 3 mo for the first 4 yr were evaluated for consumption with ... ( Click here for full abstract)

Effect of Feeding Status on Mortality Response of Adult Bed Bugs (Hemiptera: Cimicidae) to Some Insecticide Products
Authors: Choe, Dong-Hwan; Campbell, Kathleen
Source: Journal of Economic Entomology, Volume 107, Number 3, June 2014, pp. 1206-1215(10)
Abstract:  Fresh and aged residual deposits of several insecticide products were tested against bed bug adults to determine if a recent bloodmeal affected their mortality response to the residues. The bed bugs with a recent bloodmeal survived significantly longer compared with the unfed ones on their exposure to fresh or aged residual deposits of chlorfenapyr and aged residual deposits of deltamethrin on a wooden substrate. Even though the survival time of fed bed bugs was significantly longer ... ( Click here for full abstract)

Influences of Pyriproxyfen on Fecundity and Reproduction of the Pharaoh Ant (Hymenoptera: Formicidae)
Authors: Tay, Jia-Wei; Lee, Chow-Yang
Source: Journal of Economic Entomology, Volume 107, Number 3, June 2014, pp. 1216-1223(8)
Abstract:  The effects of the juvenile hormone analog pyriproxyfen (at concentrations of 0.1, 0.5, and 1%) on egg production, number of ovarioles, and length of oocytes were examined in queens of the Pharaoh ant Monomorium pharaonis (L.). Pyriproxyfen significantly reduced egg production in queens from week 3 onwards. Queens that were exposed to 1% pyriproxyfen stopped producing eggs at week 8. After 8 wk, ovaries were dissected from all queens, and the number of ovarioles and the length of the largest oocytes ... ( Click here for full abstract)

Trehalase Activity in Fungus-Growing Termite, Odontotermes feae (Isoptera: Termitideae) and Inhibitory Effect of Validamycin
Authors: Tatun, Nujira; Wangsantitham, Orathai; Tungjitwitayakul, Jatuporn; Sakurai, Sho
Source: Journal of Economic Entomology, Volume 107, Number 3, June 2014, pp. 1224-1232(9)
Abstract:  Trehalase is the hydrolytic enzyme that catalyzed the hydrolysis of trehalose to glucose. In this study, trehalase activity in the fungus-growing termite, Odontotermes feae Wasmann had been examined. Trehalase activity in digestive tract and carcass of O. feae was higher than that in wood-feeding termite, Coptotermes gestroi Wasmann. The intestinal tract of worker caste of O. feae was the main source of trehalase compared with that in salivary, fat body, and carcass. In particular, the highest activity was found in ... ( Click here for full abstract)

Efficacy of Aerosol Applications of Methoprene and Synergized Pyrethrin Against Tribolium castaneum Adults and Eggs
Authors: Tucker, Angela M.; Campbell, James F.; Arthur, Frank H.; Zhu, Kun Yan
Source: Journal of Economic Entomology, Volume 107, Number 3, June 2014, pp. 1284-1291(8)
Abstract:  Experiments were performed to determine the efficacy of a single aerosol application of the insecticides methoprene and piperonyl butoxide-synergized pyrethrin, alone or in combination, and the insecticide carrier, Isopar M, against Tribolium castaneum (Herbst), the red flour beetle. The initial test exposed adults to insecticide treatments and placed male/female pairs in flour. All adults exposed to synergized pyrethrin were knocked down for at least 24 h after exposure but they recovered. ( Click here for full abstract)

Going the Distance: How Does Market Access Affect Demand for IPM Packages?
Authors: Buckmaster, Amy; Alwang, Jeffrey; Peterson, Everett; Rivera, Mauricio
Source: Journal of Integrated Pest Management, Volume 5, Number 1, 2014, pp. B1-B7(7)
Abstract:  A challenge facing integrated pest management (IPM) technology transfer programs is to identify where to conduct outreach. As IPM is a knowledge-intensive management process, effective training usually requires sustained interactions between extension professionals and target farmers. Efforts to disseminate IPM are constrained by limited extension budgets and therefore should focus on areas with the greatest promise for ... ( Click here for full abstract)

Susceptibility of Cat Fleas (Siphonaptera: Pulicidae) to Fipronil and Imidacloprid Using Adult and Larval Bioassays
Authors: Rust, M. K.; Vetter, R.; Denholm, I.; Blagburn, B.; Williamson, M. S.; Kopp, S.; Coleman, G.; Hostetler, J.; Davis, W.; Mencke, N.; Rees, R.; Foit, S.; Tetzner, K.
Source: Journal of Medical Entomology, Volume 51, Number 3, May 2014, pp. 638-643(6)
Abstract:  The monitoring of the susceptibility of fleas to insecticides has typically been conducted by exposing adults on treated surfaces. Other methods such as topical applications of insecticides to adults and larval bioassays on treated rearing media have been developed. Unfortunately, baseline responses of susceptible strains of cat flea, Ctenocephalides felis (Bouchè), except for imidacloprid, have not been determined for all on-animal therapies and new classes of ... ( Click here for full abstract)

The Effects of Temperature and Innate Immunity on Transmission of Campylobacter jejuni (Campylobacterales: Campylobacteraceae) Between Life Stages of Musca domestica (Diptera: Muscidae)
Authors: Bahrndorff, S.; Gill, C.; Lowenberger, C.; Skovgård, H.; Hald, B.
Source: Journal of Medical Entomology, Volume 51, Number 3, May 2014, pp. 670-677(8)
Abstract:  The house fly ( Musca domestica L.) is a well-established vector of human pathogens, including Campylobacter spp., which can cause infection of broiler chicken flocks, and through contaminated broiler meat can cause outbreaks of campylobacteriosis in humans. We investigated whether Campylobacter jejuni (Jones) could be transferred between life stages of M. domestica (larvae-pupae-adults) and determined bacterial counts of C. jejuni at different time points after bacterial exposure.  ... ( Click here for full abstract

In addition to the scientific research, ESA also hosts the Entomology Today blog. Some recent posts of interest include: