307,488 results match your criteria Insect Bites


Ecological niche modeling as a tool for prediction of the potential geographic distribution of Bacillus anthracis spores in Tanzania.

Int J Infect Dis 2018 Dec 3. Epub 2018 Dec 3.

Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Oslo, Norway.

Introduction: Anthrax is caused by the spore-forming, Gram-positive bacterium Bacillus anthracis. The aim of the study was to predict the potential distribution of B. anthracis in Tanzania and produce epidemiological evidence for management of anthrax outbreaks in the country. Read More

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December 2018
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2.330 Impact Factor

Nucleoside and N-acetyldopamine derivatives from the insect Aspongopus chinensis.

Fitoterapia 2018 Dec 3. Epub 2018 Dec 3.

Guangdong Key Laboratory for Genome Stability & Disease Prevention, School of Pharmaceutical Sciences, Shenzhen University Health Science Center, Shenzhen 518060, PR China. Electronic address:

Two new nucleoside derivatives, named asponguanosines A and B (1 and 2), three new N-acetyldopamine analogues, aspongamides C-E (3-5), one new sesquiterpene, aspongnoid D (6), and three known compounds were isolated from the medicinal insect Aspongopus chinensis. Their structures including absolute configurations were assigned by using spectroscopic methods and ECD and C NMR calculations. Biological activities of compounds 3-7 towards human cancer cells, COX-2, ROCK1, and JAK3 were evaluated. Read More

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December 2018
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Structure and biomechanics of the antennal grooming mechanism in the southern green stink bug Nezara viridula.

J Insect Physiol 2018 Dec 3. Epub 2018 Dec 3.

Department of Functional Morphology and Biomechanics, Kiel University, Germany.

Insects devote a high amount of time to self-groom to remove foreign material, especially from their sensory appendages. Using various microscopy techniques and behavioural experiments on intact and ablated insects, the present study investigates the antennal grooming of the green stinkbug Nezara viridula, which represents a serious pest of different crops in most areas of the world. The antennal grooming behaviour encompass an action of scraping involving the tibial comb complex (tibial comb + fossula) of both forelegs, generally followed by the tibial comb complex grooming of one leg using the tarsal hairy pad of the opposite leg (rubbing). Read More

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December 2018

Reasons for Declining Venom Immunotherapy.

Acta Med Port 2018 Nov 30;31(11):618-623. Epub 2018 Nov 30.

Serviço de Imunoalergologia. Centro Hospitalar de São João. Porto. Portugal.

Introduction: Hymenoptera venom allergy is associated with significant morbidity and deterioration in health-related quality of life, and risk of fatal systemic reactions. Although venom immunotherapy is safe and the only effective treatment in allergic individuals, some patients prefer not to pursue this treatment. Since 2011, when the 50% reimbursement was stopped, patients must fully support the cost of immunotherapy. Read More

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November 2018

GHB614 x T304-40 x GHB119 x COT102 Cotton: Protein Expression Analyses of Field Grown Samples.

J Agric Food Chem 2018 Dec 6. Epub 2018 Dec 6.

Food and feed safety assessment is not enhanced by performing protein expression analysis on stacked trait products. The expression levels of six proteins in cotton matrices from four single cotton events and three conventionally stacked trait cotton products are reported. Three proteins were for insect control, two proteins confer herbicide tolerance, and one protein was a transformation selectable marker. Read More

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December 2018

Chlorogenic acid-mediated chemical defense of plants against insect herbivores.

Plant Biol (Stuttg) 2018 Dec 6. Epub 2018 Dec 6.

National Institute of Plant Genome Research (NIPGR), Aruna Asaf Ali Marg, New Delhi, 110067, India.

Chlorogenic acid is one of the most abundant beneficial polyphenols in plants and is well known as nutritional anti-oxidant in plant based foods. Apart from its dietary antioxidant activity, it has been proven to be an efficient defense molecule against a broad range of insect herbivores. In the last two decades, several reports have shown the effectiveness of chlorogenic acid for insect's growth deterrence. Read More

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December 2018
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Heritable phytohormone profiles of poplar genotypes vary in resistance to a galling aphid.

Mol Plant Microbe Interact 2018 Dec 6. Epub 2018 Dec 6.

University of Toledo College of Natural Sciences and Mathematics, 385199, Department of Environmental Sciences, Toledo, Ohio, United States.

Insect galls are highly specialized structures arising from atypical development of plant tissue induced by insects. Galls provide the insect enhanced nutrition and protection against natural enemies and environmental stresses. Galls are essentially plant organs formed by an intimate biochemical interaction between the gall-inducing insect and its host-plant. Read More

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December 2018
2 Reads

Allergen-specific immunoglobulin E in sera of horses affected with insect bite hypersensitivity, severe equine asthma or both conditions.

J Vet Intern Med 2018 Dec 6. Epub 2018 Dec 6.

Department of Clinical Research, University of Bern, Berne, Switzerland.

Background: Genetic, epidemiologic, and clinical evidence suggests that, in horses, there are manifestations of hypersensitivity that can occur together.

Objectives: To investigate whether concurrent insect bite hypersensitivity (IBH) and severe equine asthma (EA) is associated with higher allergen-specific and total serum immunoglobulin E (IgE) concentrations than only EA or IBH.

Animals: Healthy control horses (C, n = 40), horses with IBH (IBH, n = 24), severe EA (EA, n = 18), and both conditions (IBH/EA, n = 23) were included. Read More

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December 2018

Disruption of sex-specific doublesex exons results in male- and female-specific defects in the black cutworm, Agrotis ipsilon.

Pest Manag Sci 2018 Dec 6. Epub 2018 Dec 6.

Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China.

Background: Doublesex (dsx), the downstream gene in the insect sex determination pathway, is a key regulator of sexually dimorphic development and behavior across a variety of insects. Manipulating the expression of dsx could be a useful method in genetic control of insects. However, information on the sex-specific function of dsx in non-model insects is lacking. Read More

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December 2018
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Bioassay Method for Toxicity Studies of Toxic Bait Formulations to Ceratitis capitata (Diptera: Tephritidae).

Neotrop Entomol 2018 Dec 5. Epub 2018 Dec 5.

Embrapa Uva e Vinho, Bento Gonçalves, Rio Grande do Sul, Brasil.

The development of appropriate methodologies for bioassays is of paramount importance to study the methodological factors that may interfere in the experimental design. Thus, laboratory bioassays have become increasingly important for the determination of data that are realistic and replicable. The objective of the study was to develop a bioassay methodology with the ready-to-use toxic bait Success™ 0. Read More

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December 2018

A carnivorous plant genetic map: pitcher/insect-capture QTL on a genetic linkage map of .

Life Sci Alliance 2018 Dec 29;1(6):e201800146. Epub 2018 Nov 29.

Department of Plant Biology, Miller Plant Sciences Building, University of Georgia, Athens, GA, USA.

The study of carnivorous plants can afford insight into their unique evolutionary adaptations and their interactions with prokaryotic and eukaryotic species. For (pitcher plants), we identified 64 quantitative trait loci (QTL) for insect-capture traits of the pitchers, providing the genetic basis for differences between the pitfall and lobster-trap strategies of insect capture. The linkage map developed here is based upon the F2 of a cross between and ; we mapped 437 single nucleotide polymorphism and simple sequence repeat markers. Read More

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December 2018
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Effects of waste stream combinations from brewing industry on performance of Black Soldier Fly, (Diptera: Stratiomyidae).

PeerJ 2018 28;6:e5885. Epub 2018 Nov 28.

Plant Health Theme, International Centre of Insect Physiology and Ecology (icipe), Nairobi, Kenya.

Background: In recent years, there has been a rapidly growing demand for readily accessible substrates for mass production of Black Soldier Fly, Linnaeus. Beer production results in various by-products that typically end up in uncontrolled dumpsites constituting pollution problems, which merits urgent attention. The present study investigated whether the 12 formulated diets composed of brewers' spent grains (BSGs), brewers' yeast and cane molasses can serve as substrate for production. Read More

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November 2018

The impact of artificial light at night on nocturnal insects: A review and synthesis.

Ecol Evol 2018 Nov 23;8(22):11337-11358. Epub 2018 Oct 23.

Department of Biology Tufts University Medford Massachusetts.

In recent decades, advances in lighting technology have precipitated exponential increases in night sky brightness worldwide, raising concerns in the scientific community about the impact of artificial light at night (ALAN) on crepuscular and nocturnal biodiversity. Long-term records show that insect abundance has declined significantly over this time, with worrying implications for terrestrial ecosystems. The majority of investigations into the vulnerability of nocturnal insects to artificial light have focused on the flight-to-light behavior exhibited by select insect families. Read More

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November 2018

Social environment affects the transcriptomic response to bacteria in ant queens.

Ecol Evol 2018 Nov 24;8(22):11031-11070. Epub 2018 Oct 24.

Institute of Science and Technology Austria (IST Austria) Klosterneuburg Austria.

Social insects have evolved enormous capacities to collectively build nests and defend their colonies against both predators and pathogens. The latter is achieved by a combination of individual immune responses and sophisticated collective behavioral and organizational disease defenses, that is, social immunity. We investigated how the presence or absence of these social defense lines affects individual-level immunity in ant queens after bacterial infection. Read More

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November 2018
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Trade-off between reproductive and anti-competitor abilities in an insect-parasitic nematode-bacteria symbiosis.

Ecol Evol 2018 Nov 18;8(22):10847-10856. Epub 2018 Oct 18.

Department of Biology Indiana University Bloomington Indiana.

Mutualistic symbionts can provide diverse benefits to their hosts and often supply key trait variation for host adaptation. The bacterial symbionts of entomopathogenic nematodes play a crucial role in successful colonization of and reproduction in the insect host. Additionally, these symbionts can produce a diverse array of antimicrobial compounds to deter within-host competitors. Read More

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November 2018

Mycorrhizal interactions do not influence plant-herbivore interactions in populations of ssp. spanning from center to margin of the geographic range.

Ecol Evol 2018 Nov 26;8(22):10743-10753. Epub 2018 Oct 26.

Department of Plant and Microbial Biology University of Minnesota St. Paul Minnesota.

Multispecies interactions can be important to the expression of phenotypes and in determining patterns of individual fitness in nature. Many plants engage in symbiosis with arbuscular mycorrhizal fungi (AMF), but the extent to which AMF modulate other species interactions remains poorly understood. We examined multispecies interactions among plants, AMF, and insect herbivores under drought stress using a greenhouse experiment and herbivore choice assays. Read More

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November 2018

Plant phenological asynchrony and community structure of gall-inducing insects associated with a tropical tree species.

Ecol Evol 2018 Nov 1;8(22):10687-10697. Epub 2018 Nov 1.

Departamento de Biologia Geral CCBS Programa de Pós-Graduação em Biodiversidade e Uso dos Recursos Naturais Universidade Estadual de Montes Claros Montes Claros Minas Gerais Brazil.

The dynamics of occurrence of target organs in plant populations produces windows of opportunity that directly and indirectly affect the structure of herbivore communities. However, mechanisms that drive herbivore specialization between resource patches are still poorly known. In this study, we tested three hypotheses related to variation in host plant phenology and community structure (i. Read More

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November 2018
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Inducibility of Plant Secondary Metabolites in the Stem Predicts Genetic Variation in Resistance Against a Key Insect Herbivore in Maritime Pine.

Front Plant Sci 2018 21;9:1651. Epub 2018 Nov 21.

Misión Biológica de Galicia, Consejo Superior de Investigaciones Científicas, Pontevedra, Spain.

Resistance to herbivores and pathogens is considered a key plant trait with strong adaptive value in trees, usually involving high concentrations of a diverse array of plant secondary metabolites (PSM). Intraspecific genetic variation and plasticity of PSM are widely known. However, their ecology and evolution are unclear, and even the implication of PSM as traits that provide direct effective resistance against herbivores is currently questioned. Read More

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November 2018

A case of ulceroglandular tularemia presenting with lymphadenopathy and an ulcer on a linear morphoea lesion surrounded by erysipelas.

Int Med Case Rep J 2018 12;11:313-318. Epub 2018 Nov 12.

Department of Infectious Diseases, Regional Hospital of Bellinzona e Valli, 6500 Bellinzona, Ticino, Switzerland.

Tularemia is a zoonosis caused by the infection of (a gram-negative aerobic bacterium). Transmission to other animals or humans usually occurs through insect or tick bites, direct contact with a contaminated environment (mud or water), infected animals - mainly lagomorphs - or by ingesting undercooked meat or inhaling contaminated dust (hay or soil). This paper discusses the case of a 32-year-old man, who came to our Emergency Room presenting with persistent fever, inguinal lymphadenopathy, and an ulcer on his left lower limb on a linear morphoea lesion that had been there for some time. Read More

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November 2018

Mapping the pH sensors critical for host cell entry by a complex non-enveloped virus.

J Virol 2018 Dec 5. Epub 2018 Dec 5.

Department of Pathogen Molecular Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, United Kingdom

Bluetongue virus (BTV), family , is an insect-borne, double-capsid virus causing haemorrhagic disease in livestock around the world. Here we elucidate how outer capsid proteins VP2 and VP5 coordinate cell entry of BTV. To identify key functional residues, we used atomic-level structural data to guide mutagenesis of VP2 and VP5, and a series of biological and biochemical approaches, including site-directed mutagenesis, reverse genetics-based virus recovery, expression and characterization of individual recombinant mutant proteins and various and assays. Read More

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December 2018
3 Reads

The antimicrobial peptide CopA3 inhibits toxin A-induced viability loss and apoptosis in neural cells.

J Microbiol Biotechnol 2018 Nov 16. Epub 2018 Nov 16.

Divison of Life Science and Chemistry, College of Natural Science, Daejin University, Pocheon, Gyeonggido, South Korea.

Numerous studies have reported that enteric neurons involved in controlling neurotransmitter secretion and motility in the gut critically contribute to the progression of gut inflammation. toxins, which cause severe colonic inflammation, are also known to affect enteric neurons. Our previous study showed that toxin A directly induces neural cell toxicities, such as viability loss and apoptosis. Read More

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November 2018

Molecular cross-talk in a unique parasitoid manipulation strategy.

Insect Biochem Mol Biol 2018 Nov 30. Epub 2018 Nov 30.

Department of Life Sciences, Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva, 84105, Israel; Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, P.O. Box 653, Beer Sheva, 84105, Israel. Electronic address:

Envenomation of cockroach cerebral ganglia by the parasitoid Jewel wasp, Ampulex compressa, induces specific, long-lasting behavioural changes. We hypothesized that this prolonged action results from venom-induced changes in brain neurochemistry. Here, we address this issue by first identifying molecular targets of the venom, i. Read More

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November 2018

Francisella tularensis Exposure Among National Park Service Employees During an Epizootic: Devils Tower National Monument, Wyoming, 2015.

Vector Borne Zoonotic Dis 2018 Dec 1. Epub 2018 Dec 1.

4 Division of Vector-Borne Diseases, Centers for Disease Control and Prevention , Fort Collins, Colorado.

Introduction: Tularemia is a zoonotic infection caused by the highly infectious bacterium Francisella tularensis. Persons having outdoor professions are more likely than others to be exposed to F. tularensis through increased contact with arthropods, infected animals, and contaminated aerosols. Read More

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December 2018

Morphological Variation Tracks Environmental Gradients in an Agricultural Pest, Phaulacridium vittatum (Orthoptera: Acrididae).

J Insect Sci 2018 Nov 1;18(6). Epub 2018 Nov 1.

Department of Biological Sciences, Macquarie University, Sydney, Australia.

Invertebrate pests often show high morphological variation and wide environmental tolerances. Knowledge of how phenotypic variation is associated with environmental heterogeneity can elucidate the processes underpinning these patterns. Here we examine morphological variation and relative abundance along environmental gradients in a widespread agricultural pest, native to Australia, the wingless grasshopper Phaulacridium vittatum (Sjöstedt). Read More

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November 2018

The Composition of Midgut Bacteria in Aedes aegypti (Diptera: Culicidae) That Are Naturally Susceptible or Refractory to Dengue Viruses.

J Insect Sci 2018 Nov 1;18(6). Epub 2018 Nov 1.

C2D2 Research Group, Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada.

The composition, abundance, and diversity of midgut bacteria in mosquitoes can influence pathogen transmission. We used 16S rRNA microbiome profiling to survey midgut microbial diversity in pooled samples of laboratory colonized dengue-refractory, Cali-MIB, and dengue-susceptible, Cali-S Aedes aegypti (Linnaeus). The 16S rRNA sequences from the sugar-fed midguts of adult females clustered to 63 amplicon sequence variants (ASVs), primarily from Proteobacteria, Firmicutes, Flavobacteria, and Actinobacteria. Read More

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November 2018

The Mitochondrial Genomes of Phytophagous Scarab Beetles and Systematic Implications.

Authors:
Nan Song Hao Zhang

J Insect Sci 2018 Nov 1;18(6). Epub 2018 Nov 1.

Department of Ideological and Political Theory Course, Henan Vocational and Technological College of Communication, Zhengzhou, China.

In this study, we newly sequenced five mitogenomes of representatives of phytophagous scarab beetles (Coleoptera: Scarabaeidae) by using next-generation sequencing technology. Two species have complete (or nearly complete) mitogenome sequences, namely Popillia mutans Newman (Coleoptera: Scarabaeidae) and Holotrichia oblita Faldermann (Coleoptera: Scarabaeidae). The remaining three species have the partial mitogenomes, and the missing genes are mainly located adjacent to the control region. Read More

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November 2018

Persistence of Metarhizium (Hypocreales: Clavicipitaceae) and Beauveria bassiana (Hypocreales: Clavicipitaceae) in Tobacco Soils and Potential as Biocontrol Agents of Spodoptera litura (Lepidoptera: Noctuidae).

Environ Entomol 2018 Dec 3. Epub 2018 Dec 3.

Key Lab of Natural Pesticide & Chemical Biology, Ministry of Education/College of Agriculture, South China Agriculture University, Guangzhou, Guangdong 510520, China.

Entomopathogenic fungi (EPF), such as Metarhizium spp. and Beauveria bassiana, are widely used in the biocontrol of many species of insect pests. Tobacco is an economically important crop in Guangdong Province of China, but insect pests, such as Spodoptera litura Fabricius, are a major threat to production. Read More

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December 2018

Phenotypic Effects of PBAN RNAi Using Oral Delivery of dsRNA to Corn Earworm (Lepidoptera: Noctuidae) and Tobacco Budworm Larvae.

J Econ Entomol 2018 Dec 3. Epub 2018 Dec 3.

Center for Medical, Agricultural and Veterinary Entomology (CMAVE), USDA-ARS, Gainesville, FL.

Insect neuropeptides represent more than 90% of all insect hormones. The pheromone biosynthesis activating neuropeptide (PBAN)/pyrokinin family is a major group of insect neuropeptides. These neuropeptides regulate a variety of biological functions from embryo to adult in moths including, sex pheromone biosynthesis and diapause. Read More

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December 2018

Geographical Distribution of Ectropis grisescens (Lepidoptera: Geometridae) and Ectropis obliqua in China and Description of an Efficient Identification Method.

J Econ Entomol 2018 Dec 3. Epub 2018 Dec 3.

Key Laboratory of Tea Biology and Resource Utilization, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Science, Hangzhou, People's Republic of China.

Ectropis grisescens Warren 1894 (Lepidopotera: Geometridae) and Ectropis obliqua Prout 1915 (Lepidopotera: Geometridae) are the most destructive chewing pests in China's tea plantations. Ectropis grisescens sex pheromone lures and E. obliqua nucleopolyhedrosis virus (EoNPV) are two species-specific and effective bio-control technologies to control these pests. Read More

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December 2018

Workshop on Pesticide Exposure Assessment Paradigm for Non-Apis Bees: Foundation and Summaries.

Environ Entomol 2018 Dec 3. Epub 2018 Dec 3.

U.S. Environmental Protection Agency, NW Office of Pesticide Programs/Environmental Fate and Effects Division, 1200 Pennsylvania Avenue, Washington, DC, USA.

Current pesticide risk assessment practices use the honey bee, Apis mellifera L., as a surrogate to characterize the likelihood of chemical exposure of a candidate pesticide for all bee species. Bees make up a diverse insect group that provides critical pollination services to both managed and wild ecosystems. Read More

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December 2018
2 Reads

Cereal aphids differently affect benzoxazinoid levels in durum wheat.

PLoS One 2018 3;13(12):e0208103. Epub 2018 Dec 3.

French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Sede Boqer Campus, Israel.

Aphids are major pests in cereal crops that cause direct and indirect damage leading to yield reduction. Despite the fact that wheat provides 20% of the world's caloric and protein diet, its metabolic responses to aphid attack, in general, and specifically its production of benzoxazinoid defense compounds are poorly understood. The objective of this study was to compare the metabolic diversity of durum wheat seedlings (Triticum turgidum ssp. Read More

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December 2018

Biogeochemistry and forest composition shape nesting patterns of a dominant canopy ant.

Oecologia 2018 Dec 1. Epub 2018 Dec 1.

Department of Biology, Graduate Program in Ecology and Evolutionary Biology, University of Oklahoma, Norman, OK, 73019, USA.

Humans are increasing nutrient deposition across the globe, and we know little about how these changes influence consumer populations in tropical rainforests. We used a long-term fertilization experiment conducted in a Panamanian forest to explore how nutrient availability and tree traits affect abundance of a higher-level consumer. We added nitrogen, phosphorus and potassium in a factorial design for 18 years. Read More

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December 2018

Ribosome Profiling Reveals HSP90 Inhibitor Effects on Stage-Specific Protein Synthesis in .

mSystems 2018 Nov-Dec;3(6). Epub 2018 Nov 20.

Leishmaniasis Group, Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.

The 90-kDa heat shock protein (HSP90) of eukaryotes is a highly abundant and essential chaperone required for the maturation of regulatory and signal proteins. In the protozoan parasite Leishmania donovani, causative agent of the fatal visceral leishmaniasis, HSP90 activity is essential for cell proliferation and survival. Even more importantly, its inhibition causes life cycle progression from the insect stage to the pathogenic, mammalian stage. Read More

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November 2018
3 Reads

Transcriptional regulation of anthocyanin biosynthesis in a high-anthocyanin resynthesized cultivar.

J Biol Res (Thessalon) 2018 Dec 26;25:19. Epub 2018 Nov 26.

1Department of Horticulture, Sunchon National University, 255 Jungang-ro, Suncheon, Jeonnam 57922 South Korea.

Background: Anthocyanins are plant secondary metabolites with key roles in attracting insect pollinators and protecting against biotic and abiotic stresses. They have potential health-promoting effects as part of the human diet. Anthocyanin biosynthesis has been elucidated in many species, enabling the development of anthocyanin-enriched fruits, vegetables, and grains; however, few studies have investigated anthocyanin biosynthesis. Read More

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December 2018

Variation in elemental composition as influenced by chlorpyrifos application in mung bean ( L.).

Saudi J Biol Sci 2018 Nov 11;25(7):1439-1445. Epub 2016 Jan 11.

Department of Biosciences, Jamia Millia Islamia, (Central University), New Delhi 110025, India.

Chlorpyrifos (O,O-diethyl O-(3,5,6-trichloro-2-pyridyl) phosphorothioate), is an organophosphate insecticide effective against a broad spectrum of insect pests of economically important crops. The present study investigated the effects of chlorpyrifos application on sulfate assimilation and macro elemental composition in different plant parts at different phenological stages. Field experiments were conducted in the month of April 2008-2009. Read More

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November 2018

Role of pollination in yield and physicochemical properties of tomatoes ().

Saudi J Biol Sci 2018 Nov 3;25(7):1291-1297. Epub 2017 Oct 3.

Department of Plant Protection, Ghazi University, Dera Ghazi Khan, Punjab, Pakistan.

Very little is known about pollination and its effects on the yield and physicochemical properties of flowering plants in tropical countries. Wind and insect pollinators are among our natural resources because pollination is the most important ecosystem service performed by wind and insects, and is vital to the socio-economic status of human beings. In this experiment, different pollination methods for tomato plants were examined. Read More

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November 2018

, a new genus and species from South America (Hemiptera, Lygaeoidea, Lygaeidae).

Authors:
Harry Brailovsky

Zookeys 2018 15(796):319-324. Epub 2018 Nov 15.

Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México, Apdo. Postal No. 70153, Ciudad de México. Universidad Nacional Autónoma de México México Mexico.

, new genus and new species, is described from Ecuador and Peru, and included in the lygaeid subfamily Lygaeinae. Dorsal and lateral view photographs of , , and are provided to allow comparison of the three closely related genera; photographs of the posterior view of the pygophore and the paramere of the new species are included. Read More

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November 2018

Overlooked gall-inducing moths revisited, with the description of gen. et sp. n. and sp. n. from Chile (Lepidoptera, Cecidosidae).

Zookeys 2018 12(795):127-157. Epub 2018 Nov 12.

Department of Entomology, National Museum of Natural History, Smithsonian Institution, Washington, DC 37012-7012, USA.

There are still many gall systems associated with larvae of Lepidoptera in which the true gall-inducers have not been identified to species. Reports on misidentification of gall inducers have been recurrent for these galls, particularly in complex gall-systems that may include inquilines, kleptoparasites, and cecidophages, among other feeding guilds such as predators and parasitoid wasps. Here we describe and illustrate the adults, larvae, pupae and galls, based on light and scanning microscopy, of and , two sympatric cecidosid moths that are associated with (Cav. Read More

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November 2018

Optical remote sensing for monitoring flying mosquitoes, gender identification and discussion on species identification.

Appl Phys B 2018 Mar 17;124(3). Epub 2018 Feb 17.

Department of Physics, New Jersey Institute of Technology, 323 Martin Luther King Jr Blvd, Newark, NJ, USA.

Mosquito-borne diseases are a major challenge for Human health as they affect nearly 700 million people every year and result in over 1 million deaths. Reliable information on the evolution of population and spatial distribution of key insects species is of major importance in the development of eco-epidemiologic models. This paper reports on the remote characterization of flying mosquitoes using a continuous-wave infrared optical remote sensing system. Read More

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Persistence of root-colonizing Pseudomonas protegens in herbivorous insects throughout different developmental stages and dispersal to new host plants.

ISME J 2018 Nov 30. Epub 2018 Nov 30.

Plant Pathology, Institute of Integrative Biology, ETH Zürich, Zürich, Switzerland.

The discovery of insecticidal activity in root-colonizing pseudomonads, best-known for their plant-beneficial effects, raised fundamental questions about the ecological relevance of insects as alternative hosts for these bacteria. Since soil bacteria are limited in their inherent abilities of dispersal, insects as vectors might be welcome vehicles to overcome large distances. Here, we report on the transmission of the root-colonizing, plant-beneficial and insecticidal bacterium Pseudomonas protegens CHA0 from root to root by the cabbage root fly, Delia radicum. Read More

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November 2018

Opposite macroevolutionary responses to environmental changes in grasses and insects during the Neogene grassland expansion.

Nat Commun 2018 Nov 30;9(1):5089. Epub 2018 Nov 30.

UMR EGCE (Evolution, Génome, Comportement, Ecologie), CNRS-IRD-Univ. Paris-Sud, IDEEV, Université Paris-Saclay, 1 Avenue de la Terrasse, 91198, Gif-sur-Yvette, France.

The rise of Neogene C grasslands is one of the most drastic changes recently experienced by the biosphere. A central - and widely debated - hypothesis posits that Neogene grasslands acted as a major adaptive zone for herbivore lineages. We test this hypothesis with a novel model system, the Sesamiina stemborer moths and their associated host-grasses. Read More

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November 2018
1 Read

Asiatic Acid, Corosolic Acid, and Maslinic Acid Interfere with Intracellular Trafficking and N-Linked Glycosylation of Intercellular Adhesion Molecule-1.

Biol Pharm Bull 2018 ;41(12):1757-1768

Department of Applied Biology, Kyoto Institute of Technology.

The pentacyclic triterpenoid ursolic acid was previously shown to inhibit the intracellular trafficking of intercellular adhesion molecule-1 (ICAM-1) from the endoplasmic reticulum (ER) to the Golgi apparatus. In the present study, we further investigated the biological activities of three pentacyclic triterpenoids closely related to ursolic acid on the interleukin 1α-induced expression and intracellular trafficking of ICAM-1. In human lung adenocarcinoma A549 cells, asiatic acid, corosolic acid, and maslinic acid interfered with the intracellular transport of ICAM-1 to the cell surface. Read More

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January 2018

The intestinal microbiota of larvae is affected by diet and shows a diverse composition in the different midgut regions.

Appl Environ Microbiol 2018 Nov 30. Epub 2018 Nov 30.

Department of Agricultural Sciences, University of Naples "Federico II", Portici (NA), Italy

The larva of the black soldier fly () has emerged as an efficient system for the bioconversion of organic waste. Although many research efforts are devoted to the optimization of rearing conditions to increase the yield of the bioconversion process, microbiological aspects related to this insect are still neglected. Here we describe the microbiota of the midgut of larvae showing the effect of different diets and midgut regions in shaping microbial load and diversity. Read More

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November 2018
3 Reads

Fiber-associated spirochetes are major agents of hemicellulose degradation in the hindgut of wood-feeding higher termites.

Proc Natl Acad Sci U S A 2018 Nov 30. Epub 2018 Nov 30.

Research Group Insect Gut Microbiology and Symbiosis, Max Planck Institute for Terrestrial Microbiology, 35043 Marburg, Germany.

Symbiotic digestion of lignocellulose in wood-feeding higher termites (family Termitidae) is a two-step process that involves endogenous host cellulases secreted in the midgut and a dense bacterial community in the hindgut compartment. The genomes of the bacterial gut microbiota encode diverse cellulolytic and hemicellulolytic enzymes, but the contributions of host and bacterial symbionts to lignocellulose degradation remain ambiguous. Our previous studies of spp. Read More

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November 2018
2 Reads

Differential suppression of persistent insect specific viruses in trans-infected wMel and wMelPop-CLA Aedes-derived mosquito lines.

Virology 2018 Nov 29;527:141-145. Epub 2018 Nov 29.

Institute of Vector-Borne Disease, Monash University, Clayton, Vic., Australia. Electronic address:

Wolbachia suppresses the replication of +ssRNA viruses such as dengue and Zika viruses in Aedes aegypti mosquitoes. However, the range of viruses affected by this endosymbiont is yet to be explored. Recently, novel insect-specific viruses (ISVs) have been described from numerous mosquito species and mosquito-derived cell lines. Read More

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November 2018
1 Read

E93 expression and links to the juvenile hormone in hemipteran mealybugs with insights on female neoteny.

Insect Biochem Mol Biol 2018 Nov 29. Epub 2018 Nov 29.

Nagoya University, Graduate School of Bioagricultural Sciences, Nagoya, Japan.

Insect metamorphosis produces reproductive adults and is commonly accompanied with the direct or indirect development of wings. In some winged insects, the imago is altered by life history changes. For instance, in scale insects and mealybugs, reproductive females retain juvenile features and are wingless. Read More

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November 2018

Comparison of wormlions and their immediate habitat under man-made and natural shelters: suggesting factors making wormlions successful in cities.

Zoology (Jena) 2018 Oct 29;130:38-46. Epub 2018 Aug 29.

School of Zoology, Faculty of Life Sciences & Steinhardt Museum of Natural History and National Research Center, Tel Aviv University, Tel Aviv, Israel. Electronic address:

Wormlions are fly larvae that construct pit-traps in loose soil and ambush prey that fall into their pits. They occur in high numbers in cities, below any man-made shelter providing protection from direct sunlight, such as a concrete roof with a thin layer of sand at the ground. Their natural habitat is either caves or any natural structure that provides full shade. Read More

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October 2018

Loss of ion homeostasis is not the cause of chill coma or impaired dispersal in false codling moth Thaumatotibia leucotreta (Lepidoptera: Tortricidae).

Comp Biochem Physiol A Mol Integr Physiol 2018 Nov 28. Epub 2018 Nov 28.

Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa; Centre for Invasion Biology, Department of Conservation Ecology and Entomology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa.

Dispersal is a central requirement of a successful sterile insect release programme, but field-released false codling moth (FCM) typically suffer from poor dispersal ability, especially at low ambient temperatures. Here we test the hypothesis that poor activity and dispersal in FCM is caused by delayed or perturbed recovery of ion and/or water homeostasis after chilling for handling and transport prior to field release. Hemolymph and flight muscle were collected from two treatment groups at three time points that targeted thermal conditions above and below the chill coma induction threshold of ~ 6 °C: 1) control moths kept at 25 °C, 2) moths exposed to 3 °C or 9 °C for 4 h, and 3) moths allowed to recover at 25 °C for 24 h after exposure to either 3 °C or 9 °C. Read More

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November 2018

Comparing the un-comparable: Olyset Plus and Olyset, different malaria impact.

Authors:
Ole Skovmand

Malar J 2018 Nov 30;17(1):446. Epub 2018 Nov 30.

Intelligent Insect Control, Montpellier, France.

Background: In a recent article in The Lancet, Protopopoff et al. stated that insecticide resistance must be tackled and concluded that adding the insecticide synergist piperonyl butoxide (PBO) to a bed net with a pyrethroid as principal insecticide might be a part of the response.

Main Text: The study in Tanzania compares malaria prevalence between users of two different nets with the principal insecticide permethrin: Olyset and Olyset Plus (Olyset+), the latter also holding the synergist molecule PBO, the first not. Read More

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November 2018

Transmission blocking sugar baits for the control of Leishmania development inside sand flies using environmentally friendly beta-glycosides and their aglycones.

Parasit Vectors 2018 Nov 30;11(1):614. Epub 2018 Nov 30.

Laboratório de Bioquímica e Fisiologia de Insetos, Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Brazil.

Background: The sand fly Lutzomyia longipalpis is the main vector of American visceral leishmaniasis, a disease caused by parasites of the genus Leishmania. Adults of this insect feed on blood (females only) or sugar from plant sources, but their digestion of carbohydrates is poorly studied. Beta-glycosides as esculin and amygdalin are plant compounds and release toxic compounds as esculetin and mandelonitrile when hydrolyzed. Read More

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November 2018