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Environmental Entomology

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https://www.readbyqxmd.com/read/28541434/rapid-cold-hardening-capacity-and-its-impact-on-performance-of-russian-wheat-aphid-hemiptera-aphididae
#1
Fatemeh Saeidi, Saeid Moharramipour, Azam Mikani
The Russian wheat aphid, Diuraphis noxia (Kurdjumov), is one of the most important pests of wheat and barley in most wheat-producing countries. Rapid cold hardiness (RCH) is a capacity of insects to develop, within hours, protection against subfreezing temperatures that plays an important role in aphid survival in response to sudden decreases in air temperature. In this research, we investigated the duration and rate of cooling on the induction of RCH of D. noxia and the costs of RCH on aphid development and fecundity...
May 25, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28535309/sex-pheromone-dosages-and-release-point-densities-for-mating-disruption-of-ostrinia-furnacalis-lepidoptera-crambidae-in-ne-china-corn-fields
#2
Ri-Zhao Chen, Chung-Kuang Jow, Michael G Klein, Yu-di Jia, Da-Yu Zhang, Lan-Bing Li
Mating disruption of Ostrinia furnacalis (Guenée) (Lepidoptera: Crambidae) with its sex pheromone has not been commonly used in NE China due to a lack of information about optimal sex pheromone dosages and the density of release points required in the field. During 2014-2016, first, the two active pheromone ingredients were evaluated in the laboratory alone at ca. 2.5-5.0 mg, or in combination at 0.2-6.0 mg, to disrupt male O. furnacalis mating behaviors. Then, mating disruption areas, with radii of <8...
May 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28535265/physiology-of-cold-hardiness-seasonal-fluctuations-and-cryoprotectant-contents-in-overwintering-adults-of-hypera-postica-coleoptera-curculionidae
#3
Mahdieh Saeidi, Saeid Moharramipour
The alfalfa weevil, Hypera postica (Gyllenhal), is widely distributed in various alfalfa-growing regions in the world. Adults enter the field gradually from hibernation places and overwinter in a nondiapausing state, exhibiting feeding, mating, and oviposition over autumn and winter whenever the weather permits. In this study, the variability of supercooling point (SCP) and cold hardiness in alfalfa weevil was investigated. Adults were collected monthly from alfalfa fields in Karaj, Iran, during autumn, winter, and spring in 2011-2012...
May 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28535262/developmental-studies-of-maize-infesting-picture-winged-flies-diptera-ulidiidae
#4
Gaurav Goyal, Gregg S Nuessly, Dakshina R Seal, Gary J Steck, John L Capinera, Kenneth J Boote
Eleven species of picture-winged flies (Diptera: Ulidiidae) attack maize (Zea mays L.) in the Americas. Field and laboratory studies were used to determine developmental times on sweet corn ears for the three most common species attacking the crop in the United States, Chaetopsis massyla (Walker), Euxesta eluta Loew, and Euxesta stigmatias Loew. Egg plus larval stage developmental times were evaluated in early Spring and late Fall 2009, and late Spring 2010, by placing newly deposited eggs in protected ears in the field...
May 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28531323/effect-of-chemical-ratios-of-a-microbial-based-feeding-attractant-on-trap-catch-of-drosophila-suzukii-diptera-drosophilidae
#5
Dong H Cha, Peter J Landolt, Todd B Adams
Drosophila suzukii Matsumura, spotted wing drosophila, can be trapped with a feeding attractant based on wine and vinegar volatiles and consisting of acetic acid, ethanol, acetoin, and methionol. Using that four-component blend, we found that the catch of spotted wing drosophila increased with increases in the release rate of acetoin (from 0.5 mg/d to 34 mg/d) from polyethylene sachet dispensers, and with increases in the concentrations of acetic acid (from 0.25% to 4%) or ethanol (from 0.08% to 2%) when dispensed in the trap drowning solution...
May 22, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28531303/varietal-preferences-and-within-orchard-and-tree-distribution-of-newly-recorded-gall-midges-dasineura-amaramanjarae-and-procontarinia-mangiferae-diptera-cecidomyiidae-from-commercial-mango-cultivars-in-pakistan
#6
H M Rehman, R Mahmood, M Razaq, R Saeed, M Jamil, G V P Reddy
Gall midges (Diptera: Cecidomyiidae) damage mango by feeding on flowers and fruit tissues, inducing galls on leaves, and providing inoculums of anthracnose. Dasineura amaramanjarae Grover and Procontarinia mangiferae (Felt), two gall midges that damage flowers in all mango-growing areas of the world, have recently been recorded in Pakistan, and studies were conducted in 2011 and 2012 on the within-tree and orchard distribution patterns and cultivar preference of both species in Pakistan at one location (Rahim Yar Khan)...
May 22, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28520928/attraction-oviposition-preferences-and-olfactory-responses-of-corn-infesting-ulidiidae-diptera-to-various-host-based-substrates
#7
D Owens, G S Nuessly, P E Kendra, T A Colquhoun, D R Seal
Fresh market sweet corn (Zea mays L., convar. saccharata var. rugosa, Poales: Poaceae) ears produced in Florida are damaged by the larvae of Euxesta stigmatias Loew, Euxesta eluta Loew, and Chaetopsis massyla Walker (Diptera: Ulidiidae) that renders ears unmarketable. No standard lure exists for monitoring these pests. Oviposition substrate and attractant bioassays were designed to identify attractive substrates for further semiochemical investigation. Frass from the fall armyworm, Spodoptera frugiperda J.E...
May 18, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28510721/cold-tolerance-of-pityophthorus-juglandis-coleoptera-scolytidae-from-northern-california
#8
Andrea R Hefty, Steven J Seybold, Brian H Aukema, Robert C Venette
Winter survivorship of insects is determined by a combination of physiological, behavioral, and microhabitat characteristics. We characterized the cold tolerance of the walnut twig beetle, Pityophthorus juglandis Blackman, a domestic alien invasive bark beetle that vectors a phytopathogenic fungus. The beetle and fungus cause thousand cankers disease in species of Juglans and Pterocarya. The disease is spreading in the United States of America (USA) and Italy. Contact thermocouple thermometry was used to measure the supercooling points of adults and larvae and lower lethal temperatures of adults from a population from northern California...
May 16, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28510702/linking-vegetation-structure-and-spider-diversity-in-riparian-and-adjacent-habitats-in-two-rivers-of-central-argentina-an-analysis-at-two-conceptual-levels
#9
Mariana Griotti, Christian Muñoz-Escobar, Nelson E Ferretti
The link between vegetation structure and spider diversity has been well explored in the literature. However, few studies have compared spider diversity and its response to vegetation at two conceptual levels: assemblage (species diversity) and ensemble (guild diversity). Because of this, we studied spider diversity in riparian and adjacent habitats of a river system from the Chacoan subregion in central Argentina and evaluated their linkage with vegetation structure at these two levels. To assess vegetation structure, we measured plant species richness and vegetation cover in the herb and shrub - tree layers...
May 15, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28505274/migration-analysis-of-sogatella-furcifera-hemiptera-delphacidae-in-the-northeastern-hunan-province-in-june
#10
Mingyong Ma, Yan Wu, Zhaopu Peng, Xin Zhao, Yi Zhang, Guoan Liao, Baoping Zhai
The Sogatella furcifera (Horváth) is a notorious and destructive insect pest, targeting >4 million hectares of rice cultivated in the Hunan Province. To understand the immigration dynamics, we collected S. furcifera light trap catches from 2006 to 2012 at Niangxiang, Linxiang, and Hanshou. We conducted a migration analysis to estimate the immigration source for the northeastern Hunan Province in June. Moreover, we dissected the ovaries of S. furcifera to classify population characteristics. We found that the first appearance of S...
May 13, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28505349/decline-of-ecological-functions-performed-by-dung-beetles-in-areas-of-atlantic-forest-and-contribution-of-rollers-and-tunnellers-in-organic-matter-removal
#11
M Batilani-Filho, M I M Hernandez
The feeding behavior of the Scarabaeinae subfamily has positive implications on ecosystem functioning. We characterize the necrophagous and coprophagous dung beetle assemblages, and we quantify the removal of swine carrion and domestic dog dung in two areas with different degrees of environmental disturbance in an Atlantic Forest remnant located in Florianopolis, SC, Brazil. The experiment was setup at eight sampling points in each area, by installing one control and two collection and removal assessment arenas for collecting necrophagous dung beetles while simultaneously evaluating the removal of carrion (50 g of rotting pork for 48 h)...
May 12, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28505238/analysis-of-species-subgroups-and-endosymbionts-of-bemisia-tabaci-hemiptera-aleyrodidae-from-southwestern-cotton-fields-in-turkey
#12
Kamil Karut, M Mete Karaca, Ismail Döker, Cengiz Kazak
Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) is one of the most important insect pests worldwide including Turkey. Although there are substantial data regarding species composition of Turkish B. tabaci populations, the situation is still not clear and further investigations are needed. Therefore, in this study, species and subgroups of B. tabaci collected from cotton fields in southwestern part of Turkey (Antalya, Aydın, Denizli, and Muğla) were determined using microsatellite analysis, AluI-based mtCOI polymerase chain reaction-random length polymorphism, and sequencing...
May 12, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28505265/the-influence-of-the-topography-of-the-ailao-mountains-on-congregated-landings-of-airborne-sogatella-furcifera-hemiptera-delphacidae-populations
#13
Yan Wu, Xi-Jie Li, Xiao Chen, Gao Hu, Yan-Yue Hu, Kai Xiong, Guo Zhang, Jian Zhu, Shao-Lei Chen, Ming-Hong Lu, Ai-Dong Chen, Bao-Ping Zhai
The Sogatella furcifera (Horváth) is an important migrating rice pest whose outbreak may be caused by large-scale congregated landings. Hitherto, the meteorological factors that influence congregated landings were thought to be rainfall and downdraft. However, for migratory insects on a plateau, low temperature may be another key factor leading to congregated landings. However, no reports have been published. Therefore, this paper evaluates the reason for a large-scale congregated landing in the mountainous area in Yuanjiang via light trap monitoring...
May 11, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28498959/pan-american-similarities-in-genetic-structures-of-helicoverpa-armigera-and-helicoverpa-zea-lepidoptera-noctuidae-with-implications-for-hybridization
#14
N A Leite, A S Correa, A P Michel, A Alves-Pereira, V A C Pavinato, M I Zucchi, C Omoto
The genus Helicoverpa (Lepidoptera: Noctuidae) includes phytophagous and polyphagous agricultural insect pests. In the Americas, a native pest, Helicoverpa zea (Boddie), and an invasive pest, Helicoverpa armigera (Hübner), are causing severe damage in vegetable and agronomic crops. The population structure of both species in South America is poorly understood, and the phylogenetic relatedness of H. armigera and H. zea suggests natural interspecific gene flow between these species. Using microsatellite loci, we investigated: 1) the genetic diversity and gene flow of H...
May 11, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28486589/are-dispersal-mechanisms-changing-the-host-parasite-relationship-and-increasing-the-virulence-of-varroa-destructor-mesostigmata-varroidae-in-managed-honey-bee-hymenoptera-apidae-colonies
#15
Gloria DeGrandi-Hoffman, Fabiana Ahumada, Henry Graham
Varroa (Varroa destructor Anderson and Trueman) are a serious pest of European honey bees (Apis mellifera L.), and difficult to control in managed colonies. In our 11-mo longitudinal study, we applied multiple miticide treatments, yet mite numbers remained high and colony losses exceeded 55%. High mortality from varroa in managed apiaries is a departure from the effects of the mite in feral colonies where bees and varroa can coexist. Differences in mite survival strategies and dispersal mechanisms may be contributing factors...
May 9, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28472419/the-distribution-of-cicadellinae-leafhoppers-and-other-auchenorrhyncha-on-coffee-and-citrus-in-puerto-rico
#16
Brent V Brodbeck, Peter C Andersen, Steve Oden, Russell F Mizell, Stuart H McKamey, Mildred Zapata
: Caribovia coffeacola, Cicadellinae, coffee, Xylella fastidiosa.
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28472369/using-publicly-available-data-to-quantify-plant-pollinator-interactions-and-evaluate-conservation-seeding-mixes-in-the-northern-great-plains
#17
C R V Otto, S O'Dell, R B Bryant, N H Euliss, R M Bush, M D Smart
Concern over declining pollinators has led to multiple conservation initiatives for improving forage for bees in agroecosystems. Using data available through the Pollinator Library (npwrc.usgs.gov/pollinator/), we summarize plant-pollinator interaction data collected from 2012-2015 on lands managed by the U.S. Fish and Wildlife Service and private lands enrolled in U.S. Department of Agriculture conservation programs in eastern North Dakota (ND). Furthermore, we demonstrate how plant-pollinator interaction data from the Pollinator Library and seed cost information can be used to evaluate hypothetical seeding mixes for pollinator habitat enhancements...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28472267/the-influence-of-elevated-co2-concentration-on-the-fitness-traits-of-frankliniella-occidentalis-and-frankliniella-intonsa-thysanoptera-thripidae
#18
He ShuQi, Lin Ying, Qian Lei, Li ZhiHua, Xi Chao, Yang Lu, Gui FuRong
Development and fecundity were investigated in an invasive alien thrips species, Frankliniella occidentalis (Pergande), and a related native species, Frankliniella intonsa (Trybom), under high CO2 concentration. Results show that the two thrips species reacted differently toward elevated CO2 concentration. Developmental duration decreased significantly (11.93%) in F. occidentalis at the CO2 concentration of 800 µl/liter; survival rate of all stages also significantly increased (e.g., survival rate of first instar increased 17...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28460006/impact-of-agroecological-infrastructures-on-the-dynamics-of-dysaphis-plantaginea-hemiptera-aphididae-and-its-natural-enemies-in-apple-orchards-in-northwestern-france
#19
Laurence Albert, Pierre Franck, Yann Gilles, Manuel Plantegenest
Apple orchard production is facing new environmental and societal challenges, resulting, in particular, in strong pressure to reduce pesticide use. Cider-apple production, for which the perfect visual aspect of fruits is not a marketability imperative, offers good opportunities to study production systems that are developing new agronomic strategies, which could be subsequently extended to all apple-production types. Agroecological infrastructures play an important role in providing shelter, food resources, or reproduction habitats to many arthropods...
June 1, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28459960/diversity-of-platygastridae-in-leaf-litter-and-understory-layers-of-tropical-rainforests-of-the-western-ghats-biodiversity-hotspot-india
#20
K Manoj, T P Rajesh, U Prashanth Ballullaya, K M Meharabi, V K Shibil, K Rajmohana, Palatty Allesh Sinu
Platygastridae is the third largest family of parasitic Hymenoptera in the world. It includes important egg and larval parasitoids of insects and spiders. Therefore, Platygastridae is functionally important in maintaining the stability of tropical rainforests and agroecosystems. Although the diversity of Platygastridae is relatively well-known in agroecosystems, we know little about their diversity in tropical rainforests, and particularly about that of the leaf litter layer. Here, we address the importance of monitoring Platygastridae in tropical rainforests, using data from the relic primary forests of the sacred groves of the Western Ghats...
June 1, 2017: Environmental Entomology
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