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https://www.readbyqxmd.com/read/28208639/biological-control-strategies-for-mosquito-vectors-of-arboviruses
#1
REVIEW
Yan-Jang S Huang, Stephen Higgs, Dana L Vanlandingham
Historically, biological control utilizes predatory species and pathogenic microorganisms to reduce the population of mosquitoes as disease vectors. This is particularly important for the control of mosquito-borne arboviruses, which normally do not have specific antiviral therapies available. Although development of resistance is likely, the advantages of biological control are that the resources used are typically biodegradable and ecologically friendly. Over the past decade, the advancement of molecular biology has enabled optimization by the manipulation of genetic materials associated with biological control agents...
February 10, 2017: Insects
https://www.readbyqxmd.com/read/28208761/cold-ambient-temperature-promotes-nosema-spp-intensity-in-honey-bees-apis-mellifera
#2
Gina Retschnig, Geoffrey R Williams, Annette Schneeberger, Peter Neumann
Interactions between parasites and environmental factors have been implicated in the loss of managed Western honey bee (=HB, Apis mellifera) colonies. Although laboratory data suggest that cold temperature may limit the spread of Nosema ceranae, an invasive species and now ubiquitous endoparasite of Western HBs, the impact of weather conditions on the distribution of this microsporidian in the field is poorly understood. Here, we conducted a survey for Nosema spp. using 18 Swiss apiaries (four colonies per apiary) over a period of up to 18 months...
February 9, 2017: Insects
https://www.readbyqxmd.com/read/28208706/assessment-of-trichogramma-japonicum-and-t-chilonis-as-potential-biological-control-agents-of-yellow-stem-borer-in-rice
#3
Rui Tang, Dirk Babendreier, Feng Zhang, Min Kang, Kai Song, Mao-Lin Hou
Two species of Trichogramma wasps were assessed for their effectiveness against yellow stem borer Scirpophaga incertulas. A laboratory cage test with T. japonicum and T. chilonis showed that both species parasitized yellow stem borer egg masses at 60.0% ± 9.13% and 40.7% ± 7.11%, respectively, with egg parasitism rates of 15.8% ± 22.2% for T. japonicum and 2.8% ± 5.0% for T. chilonis. Once the host eggs were parasitized, emergence rates were high for both species (95.7% ± 0.12% for T. japonicum and 100% for T...
February 8, 2017: Insects
https://www.readbyqxmd.com/read/28208692/economic-impact-of-the-introduction-and-establishment-of-drosophila-suzukii-on-sweet-cherry-production-in-switzerland
#4
REVIEW
Dominique Mazzi, Esther Bravin, Manuela Meraner, Robert Finger, Stefan Kuske
First detected in Switzerland in 2011, the invasive Drosophila suzukii, spotted wing drosophila, has caused recurring costs for growers of berries and fruit. Recommended management approaches rely on a set of methods, tailored to suit crop requirements under the prevailing local conditions. Control of D. suzukii represents a substantial economic burden for growers, in terms of material, equipment, new infrastructure and extra labour. However, those growers who invest wisely to deliver unblemished produce are rewarded with high payoffs...
February 8, 2017: Insects
https://www.readbyqxmd.com/read/28178203/male-psyllids-differentially-learn-in-the-context-of-copulation
#5
Dara G Stockton, Xavier Martini, Lukasz L Stelinski
In the Asian citrus psyllid, Diaphorina citri Kuwayama, stimulatory cuticular hydrocarbons act as sex pheromone attractants. Male psyllids locate aggregations of females using those olfactory cues, as well as vibrational communication on the plant surface. Although previous research has indicated that learning plays a role in modulating female reproductive behaviors in psyllids, it is unknown whether males similarly use learning to increase the likelihood of copulatory success. We used an olfactometer-based bio-assay to study the effects of experience on male response to female odor...
February 7, 2017: Insects
https://www.readbyqxmd.com/read/28178183/enhanced-trapping-of-yellowjacket-wasps-hymenoptera-vespidae-via-spatial-partitioning-of-attractants
#6
Dangsheng Liang, Jose E Pietri
Several yellowjacket species are important pests in both their native habitat and in areas where they are invasive. Traps that contain one or more chemical attractants to lure insects inside are commonly used to combat these yellowjackets in urban environments. Usually, attractants are placed within the trap and combined indiscriminately, though little is known about how this design influences trap attractiveness or efficacy. Here, using the common attractant heptyl butyrate in combination with chicken extract, we demonstrate that spatial partitioning of attractants results in increased capture of the western yellowjacket Vespula pensylvanica-a widespread pestiferous species...
February 6, 2017: Insects
https://www.readbyqxmd.com/read/28178181/inside-honeybee-hives-impact-of-natural-propolis-on-the-ectoparasitic-mite-varroa-destructor-and-viruses
#7
Nora Drescher, Alexandra-Maria Klein, Peter Neumann, Orlando Yañez, Sara D Leonhardt
Social immunity is a key factor for honeybee health, including behavioral defense strategies such as the collective use of antimicrobial plant resins (propolis). While laboratory data repeatedly show significant propolis effects, field data are scarce, especially at the colony level. Here, we investigated whether propolis, as naturally deposited in the nests, can protect honeybees against ectoparasitic mites Varroa destructor and associated viruses, which are currently considered the most serious biological threat to European honeybee subspecies, Apis mellifera, globally...
February 6, 2017: Insects
https://www.readbyqxmd.com/read/28125068/potential-hybridization-between-two-invasive-termite-species-coptotermes-formosanus-and-c-gestroi-isoptera-rhinotermitidae-and-its-biological-and-economic-implications
#8
REVIEW
Nan-Yao Su, Thomas Chouvenc, Hou-Feng Li
The Asian subterranean termite, Coptotermes gestroi, is a tropical species but has increasingly been collected from the subtropics in recent years, making it sympatric to the Formosan subterranean termite, C. formosanus in at least three areas, Taiwan, Hawaii, and Florida. Simultaneous flights by these two species were observed since 2013 in South Florida, during which interspecies tandems were observed. Laboratory mating of C. formosanus and C. gestroi alates produced hybrid incipient colonies of larger population size...
January 25, 2017: Insects
https://www.readbyqxmd.com/read/28106715/seasonal-effects-on-the-population-morphology-and-reproductive-behavior-of-narnia-femorata-hemiptera-coreidae
#9
Lauren A Cirino, Christine W Miller
Many insects are influenced by the phenology of their host plants. In North Central Florida, Narnia femorata (Hemiptera: Coreidae) spends its entire life cycle living and feeding on Opuntia mesacantha ssp. lata. This cactus begins producing flower buds in April that lead to unripe green fruit in June that ripen into red fruit through December. Many morphological and behavioral characteristics of N. femorata are known to be affected by cactus phenology in a controlled laboratory setting, including the degree of sexual dimorphism and mating behavior...
January 17, 2017: Insects
https://www.readbyqxmd.com/read/28098752/microbiological-load-of-edible-insects-found-in-belgium
#10
Rudy Caparros Megido, Sandrine Desmedt, Christophe Blecker, François Béra, Éric Haubruge, Taofic Alabi, Frédéric Francis
Edible insects are gaining more and more attention as a sustainable source of animal protein for food and feed in the future. In Belgium, some insect products can be found on the market, and consumers are sourcing fresh insects from fishing stores or towards traditional markets to find exotic insects that are illegal and not sanitarily controlled. From this perspective, this study aims to characterize the microbial load of edible insects found in Belgium (i.e., fresh mealworms and house crickets from European farms and smoked termites and caterpillars from a traditional Congolese market) and to evaluate the efficiency of different processing methods (blanching for all species and freeze-drying and sterilization for European species) in reducing microorganism counts...
January 13, 2017: Insects
https://www.readbyqxmd.com/read/28085090/measurement-of-the-ecological-integrity-of-cerrado-streams-using-biological-metrics-and-the-index-of-habitat-integrity
#11
Deusiano Florêncio Dos Reis, Ayala Eduardo Salazar, Mayana Mendes Dias Machado, Sheyla Regina Marques Couceiro, Paula Benevides de Morais
Generally, aquatic communities reflect the effects of anthropogenic changes such as deforestation or organic pollution. The Cerrado stands among the most threatened ecosystems by human activities in Brazil. In order to evaluate the ecological integrity of the streams in a preserved watershed in the Northern Cerrado biome corresponding to a mosaic of ecosystems in transition to the Amazonia biome in Brazil, biological metrics related to diversity, structure, and sensitivity of aquatic macroinvertebrates were calculated...
January 12, 2017: Insects
https://www.readbyqxmd.com/read/28085083/morphological-characteristics-of-terminalia-of-the-wasp-mimicking-fly-stomorhina-discolor-fabricius
#12
Kittikhun Moophayak, Sangob Sanit, Tarinee Chaiwong, Kom Sukontason, Hiromu Kurahashi, Kabkaew L Sukontason, Roy C Vogtsberger, Nophawan Bunchu
Stomorhina discolor (Fabricius), a species of blow fly that mimics wasps, is distributed worldwide, but detailed information about characteristics of its adult terminalia is incomplete. To help fill this gap in the information, the morphology of adult stages of S. discolor was investigated using light microscopy and scanning electron microscopy. Observations using the light microscope revealed unique characteristics of the male genitalia that are markedly different from other blow fly species. More morphological detail, including observation of several sensilla (e...
January 12, 2017: Insects
https://www.readbyqxmd.com/read/28085049/wolbachia-affects-reproduction-and-population-dynamics-of-the-coffee-berry-borer-hypothenemus-hampei-implications-for-biological-control
#13
Yobana A Mariño, José C Verle Rodrigues, Paul Bayman
Wolbachia are widely distributed endosymbiotic bacteria that influence the reproduction and fitness of their hosts. In recent years the manipulation of Wolbachia infection has been considered as a potential tool for biological control. The coffee berry borer (CBB), Hypothenemus hampei, is the most devastating coffee pest worldwide. Wolbachia infection in the CBB has been reported, but until now the role of Wolbachia in CBB reproduction and fitness has not been tested. To address this issue we reared the CBB in artificial diets with and without tetracycline (0...
January 11, 2017: Insects
https://www.readbyqxmd.com/read/28085045/influence-of-varroa-mite-varroa-destructor-management-practices-on-insecticide-sensitivity-in-the-honey-bee-apis-mellifera
#14
Frank D Rinkevich, Robert G Danka, Kristen B Healy
Since Varroa mites may cause devastating losses of honey bees through direct feeding, transmitting diseases, and increasing pathogen susceptibility, chemical and mechanical practices commonly are used to reduce mite infestation. While miticide applications are typically the most consistent and efficacious Varroa mite management method, miticide-induced insecticide synergism in honey bees, and the evolution of resistance in Varroa mites are reasonable concerns. We treated colonies with the miticide amitraz (Apivar(®)), used IPM practices, or left some colonies untreated, and then measured the effect of different levels of mite infestations on the sensitivity of bees to phenothrin, amitraz, and clothianidin...
January 11, 2017: Insects
https://www.readbyqxmd.com/read/28075390/acknowledgement-to-reviewers-of-insects-in-2016
#15
EDITORIAL
Insects Editorial Office
The editors of Insects would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2016.[...].
January 10, 2017: Insects
https://www.readbyqxmd.com/read/28075377/complex-messages-in-long-term-monitoring-of-regal-fritillary-speyeria-idalia-lepidoptera-nymphalidae-in-the-state-of-wisconsin-usa-1988-2015
#16
Ann B Swengel, Scott R Swengel
The regal fritillary ("regal") (Speyeria idalia) is endangered in Wisconsin, USA, and declining and at risk range-wide. During 1988-2015, we surveyed 24 known regal sites and >100 areas of potential habitat in Wisconsin. We recorded 9037 individuals in 742.7 km on the peak survey per year at occupied sites. At six sites surveyed over 5-25 years, we found regal fritillaries in only one year, mostly in the latter half of the study. The three populations in the state with more favorable trends than the median had a never-burned refugium and/or infrequent fire management...
January 10, 2017: Insects
https://www.readbyqxmd.com/read/28075354/the-state-of-the-art-of-lethal-oviposition-trap-based-mass-interventions-for-arboviral-control
#17
Brian J Johnson, Scott A Ritchie, Dina M Fonseca
The intensifying expansion of arboviruses highlights the need for effective invasive Aedes control. While mass-trapping interventions have long been discredited as inefficient compared to insecticide applications, increasing levels of insecticide resistance, and the development of simple affordable traps that target and kill gravid female mosquitoes, show great promise. We summarize the methodologies and outcomes of recent lethal oviposition trap-based mass interventions for suppression of urban Aedes and their associated diseases...
January 8, 2017: Insects
https://www.readbyqxmd.com/read/28067782/rna-interference-for-mosquito-and-mosquito-borne-disease-control
#18
REVIEW
Paul M Airs, Lyric C Bartholomay
RNA interference (RNAi) is a powerful tool to silence endogenous mosquito and mosquito-borne pathogen genes in vivo. As the number of studies utilizing RNAi in basic research grows, so too does the arsenal of physiological targets that can be developed into products that interrupt mosquito life cycles and behaviors and, thereby, relieve the burden of mosquitoes on human health and well-being. As this technology becomes more viable for use in beneficial and pest insect management in agricultural settings, it is exciting to consider its role in public health entomology...
January 5, 2017: Insects
https://www.readbyqxmd.com/read/28054943/a-nutritional-profile-of-the-trap-nesting-wasp-trypoxylon-lactitarse-hymenoptera-crabronidae-comparison-of-sexes-and-overwintering-and-non-overwintering-generations
#19
Timothy M Judd, Matthew P Fasnacht
The wasp Trypoxylon lactitarse Saussure is a bivoltine trap-nesting species that possesses a non-overwintering generation (G1) and a generation that overwinters as a prepupa (G2). Thus, the nutritional needs of the G1 individuals were predicted to be different than the G2 because the latter generation needs to store energy prior to diapause. Trap-nesting Trypoxylon are also of interest because, unlike most Hymenoptera, the males guard the nest while females forage. Thus, males may lose nutrients as they stay and guard the nest...
January 3, 2017: Insects
https://www.readbyqxmd.com/read/28025488/toxicity-and-physiological-actions-of-carbonic-anhydrase-inhibitors-to-aedes-aegypti-and-drosophila-melanogaster
#20
Sheena A M Francis, Jennina Taylor-Wells, Aaron D Gross, Jeffrey R Bloomquist
The physiological role of carbonic anhydrases in pH and ion regulation is crucial to insect survival. We examined the toxic and neurophysiological effects of five carbonic anhydrase inhibitors (CAIs) against Aedes aegypti. The 24 h larvicidal toxicities followed this rank order of potency: dichlorphenamide > methazolamide > acetazolamide = brinzolamide = dorzolamide. Larvicidal activity increased modestly in longer exposures, and affected larvae showed attenuated responses to probing without overt tremors, hyperexcitation, or convulsions...
December 22, 2016: Insects
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