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Bulletin of Entomological Research

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https://www.readbyqxmd.com/read/28693644/gene-cloning-and-difference-analysis-of-vitellogenin-in-neoseiulus-barkeri-hughes
#1
L Ding, F Chen, R Luo, Q Pan, C Wang, S Yu, L Cong, H Liu, H Li, C Ran
Neoseiulus barkeri (HUGHES) is the natural enemy of spider mites, whiteflies and thrips. Screening for chemically-resistant predatory mites is a practical way to balance the contradiction between the pesticide using and biological control. In this study, the number of eggs laid by fenpropathrin-susceptible and resistant strains of N. barkeri was compared. Additionally, we cloned three N. barkeri vitellogenin (Vg) genes and used quantitative real-time polymerase chain reaction to quantify Vg expression in susceptible and resistant strains...
July 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28693633/loss-of-cane-and-sugar-yield-resulting-from-ceratovacuna-lanigera-zehntner-damage-in-cane-growing-regions-in-china
#2
W F Li, R Y Zhang, Y K Huang, C H Pu, J Yin, X Y Cang, H L Shan, X Y Wang, Z M Luo
Ceratovacuna lanigera Zehntner is a major leaf pest of sugarcane. Widely distributed, it affects both the yield and quality of sugarcane in China. This study aimed to assess real yield and sugar yield losses, and the effect of C. lanigera damage on emergence of newly planted and ratoon cane under current production levels. Field experiments were carried out from 2014 to 2016 in Yunnan Province China. At maturity, plants were harvested and weighed to determine yield, and the effect on sugarcane quality and sucrose content analyzed...
July 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28693624/modeling-adult-emergence-and-fecundity-of-factitious-hosts-under-different-food-sources-supports-massive-egg-production-management
#3
J Tavares, L Silva, L Oliveira
Ephestia kuehniella (Lepidoptera, Pyralidae) and Sitotroga cerealella (Lepidoptera, Gelechiidae) are important factitious hosts used for production of biological control agents. Their differences in terms of biology and behavior require adjustments in their mass production, particularly when using corn or barley as food in grain or in bran. We modeled adult emergence, oviposition period and egg production along time after emergence, as a function of the food source. Significant differences between hosts or food type were found for these variables and for adult weight but not for sex ratio...
July 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28651661/biological-characterization-and-mating-compatibility-of-helicoverpa-gelotopoeon-d-lepidoptera-noctuidae-populations-from-different-regions-in-argentina
#4
M I Herrero, S V Fogliata, A Vera, A Casmuz, D Sosa Gómez, A P Castagnaro, G Gastaminza, M G Murúa
Helicoverpa gelotopoeon, the South American bollworm, is a polyphagous pest of the Heliothinae complex that causes damage to soybean, cotton, and chickpea crops. Some species within this complex have developed resistance to genetically modified crops and insecticides, which has led to increased interest in their genetic diversity and population structure. The objective of this study was to characterize biological and reproductive parameters of two populations of H. gelotopoeon collected in two different provinces of Argentina...
June 27, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28625191/attraction-and-consumption-of-methyl-eugenol-by-male-bactrocera-umbrosa-fabricius-diptera-tephritidae-promotes-conspecific-sexual-communication-and-mating-performance
#5
S L Wee, M Z Abdul Munir, A K W Hee
The Artocarpus fruit fly, Bactrocera umbrosa (Fabricius) (Diptera: Tephritidae), is an oligophagous fruit pest infesting Moraceae fruits, including jackfruit (Artocarpus heterophyllus Lamarck), a fruit commodity of high value in Malaysia. The scarcity of fundamental biological, physiological and ecological information on this pest, particularly in relation to behavioural response to phytochemical lures, which are instrumental to the success of many area-wide fruit fly control and management programmes, underpins the need for studies on this much-underrated pest...
June 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28615084/community-wide-stable-isotope-analysis-reveals-two-distinct-trophic-groups-in-a-service-providing-carabid-community
#6
S Kamenova, C Leroux, S E Polin, M Plantegenest
Disentangling trophic interactions among species is important for elucidating mechanisms underlying ecosystem functioning and services. Carabid beetles are an important guild of predators that may regulate pest populations in arable landscapes, but their generalist feeding behavior hinders predictions about their actual contribution to pest control. In order to assess carabids' potential for pest control, we simultaneously analyzed the carbon and nitrogen stable isotope ratios of a community of 45 co-occurring species in wheat and oilseed rape fields...
June 15, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28612699/coffee-berry-borer-in-conilon-coffee-in-the-brazilian-cerrado-an-ancient-pest-in-a-new-environment
#7
C M Oliveira, M J Santos, R F Amabile, M R Frizzas, G F Bartholo
The aim of this study was to verify the occurrence of the coffee berry borer, Hypothenemus hampei (Ferrari), and to evaluate the population fluctuation of the pest in the Brazilian Cerrado (Federal District). The study was conducted, between November 2014 and October 2015, at Embrapa Cerrados (Planaltina/DF, Brazil) in an irrigated conilon coffee production area. In November 2014, 120 samples (ten berries/sample) were collected from berries that had fallen on the ground from the previous harvest. Between November 2014 and October 2015, insects were collected weekly, using traps (polyethylene terephthalate bottles) baited with ethyl alcohol (98 GL), ethyl alcohol (98 GL) with coffee powder, or molasses...
June 14, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28578733/seed-treatments-with-thiamine-reduce-the-performance-of-generalist-and-specialist-aphids-on-crop-plants
#8
A M Hamada, J Fatehi, L M V Jonsson
Thiamine is a vitamin that has been shown to act as a trigger to activate plant defence and reduce pathogen and nematode infection as well as aphid settling and reproduction. We have here investigated whether thiamine treatments of seeds (i.e. seed dressing) would increase plant resistance against aphids and whether this would have different effects on a generalist than on specialist aphids. Seeds of wheat, barley, oat and pea were treated with thiamine alone or in combination with the biocontrol bacteria Pseudomonas chlororaphis MA 342 (MA 342)...
June 5, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28578718/prokaryotic-functional-expression-and-activity-comparison-of-three-cyp9a-genes-from-the-polyphagous-pest-helicoverpa-armigera
#9
D Liu, K Tian, Y Yuan, M Li, M Zheng, X Qiu
Cytochrome P450s (CYPs or P450s) have been long recognized as very important enzymes in the metabolism of xenobiotic and endogenous compounds, but only a few CYPs have been functionally characterized in insects. The effort in functional characterization of insect P450s is heavily hindered by technical difficulties in preparing active, individual P450 enzymes directly from the target insect. In this paper, we describe the functional expression of two additional pyrethroid resistance-associated CYP9A genes (CYP9A12 and CYP9A17) from the polyphagous pest Helicoverpa armigera in the facile Escherichia coli...
June 5, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28578717/biological-traits-and-the-complex-of-parasitoids-of-the-elm-pest-orchestes-steppensis-coleoptera-curculionidae-in-xinjiang-china
#10
Q Li, S V Triapitsyn, C Wang, W Zhong, H-Y Hu
The flee-weevil Orchestes steppensis Korotyaev (Coleoptera: Curculionidae) is a steppe eastern Palaearctic species, notable as a serious pest of elms (Ulmus spp., Ulmaceae), by feeding on the leaves (adults) or mining them heavily (larvae), especially of Ulmus pumila L. in Xinjiang, China. We have corrected the previous misidentifications of this weevil in China as O. alni (L.) or O. mutabilis Boheman and demonstrated that it is likely to be an invasive species in Xinjiang. Prior to this study, natural enemies of O...
June 5, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28532532/global-phylogenetic-relationships-population-structure-and-gene-flow-estimation-of-trialeurodes-vaporariorum-greenhouse-whitefly
#11
J M Wainaina, P De Barro, L Kubatko, M A Kehoe, J Harvey, D Karanja, L M Boykin
Trialeurodes vaporariorum (Westwood, 1856) (Greenhouse whitefly) is an agricultural pest of global importance. It is associated with damage to plants during feeding and subsequent virus transmission. Yet, global phylogenetic relationships, population structure, and estimation of the rates of gene flow within this whitefly species remain largely unexplored. In this study, we obtained and filtered 227 GenBank records of mitochondrial cytochrome c oxidase I (mtCOI) sequences of T. vaporariorum, across various global locations to obtain a final set of 217 GenBank records...
May 23, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28514972/the-effect-of-tetraneura-ulmi-l-galling-process-on-the-activity-of-amino-acid-decarboxylases-and-the-content-of-biogenic-amines-in-siberian-elm-tissues
#12
K Kmieć, C Sempruch, G Chrzanowski, P Czerniewicz
Tetraneura ulmi (L.), a member of Eriosomatinae subfamily, is one of the gall-forming aphids occurring on elms. Sap-sucking behaviour of founding mothers results in the formation of new plant organs. This study documents the changes in the content of plant biogenic amines (putrescine, cadaverine, spermidine, tryptamine, spermine and histamine) and key enzymes of their biosynthesis: lysine decarboxylase (LDC), tyrosine decarboxylase and ornithine decarboxylase (ODC) in galls and other parts of Siberian elm (Ulmus pumila L...
May 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28490389/monitoring-and-mass-trapping-methodologies-using-pheromones-the-lesser-date-moth-batrachedra-amydraula
#13
A Levi-Zada, A Sadowsky, S Dobrinin, T Ticuchinski, M David, D Fefer, E Dunkelblum, J A Byers
The lesser date moth (LDM) Batrachedra amydraula is a significant pest of date palm fruits. Previously, detection and monitoring of the pest was inaccurate due to high costs of sampling with lifting machines. We report a practical system for detection and monitoring of LDM based on pheromone traps and relevant models. Dose-response experiments with LDM pheromone traps indicated a 1 mg lure is optimal for monitoring. Delta traps with adhesive covering their entire inner surface gave the highest captures while trap colour was unimportant...
May 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28485268/biochemical-studies-of-amylase-lipase-and-protease-in-callosobruchus-maculatus-coleoptera-chrysomelidae-populations-fed-with-vigna-unguiculata-grain-cultivated-with-diazotrophic-bacteria-strains
#14
L B Silva, É B Torres, R A S Nóbrega, G N Lopes, R F Vogado, B E Pavan, P I Fernandes-Junior
The objective of this study was to evaluate the enzymatic activity of homogenates of insects fed on grain of cowpea, Vigna unguiculata (L.), cultivars grown with different nitrogen sources. For the experiment we used aliquots of the homogenate of 100 unsexed adult insects, emerged from 10 g of grain obtained from four cowpea cultivars: 'BRS Acauã', 'BRS Carijó', 'BRS Pujante', and 'BRS Tapaihum' grown under different regimes of nitrogen sources: mineral fertilizer, inoculation with strains of diazotrophs (BR 3267, BR 3262, BR 3299; INPA 03-11B, 03-84 UFLA, as well as the control (with soil nitrogen)...
May 9, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28485267/blue-light-induced-immunosuppression-in-bactrocera-dorsalis-adults-as-a-carryover-effect-of-larval-exposure
#15
K Tariq, M Noor, M Hori, A Ali, A Hussain, W Peng, C-J Chang, H Zhang
Detrimental effects of ultraviolet (UV) light on living organisms are well understood, little is known about the effects of blue light irradiation. Although a recent study revealed that blue light caused more harmful effects on insects than UV light and blue light irradiation killed insect pests of various orders including Diptera, the effects of blue light on physiology of insects are still largely unknown. Here we studied the effects of blue light irradiation on cuticular melanin in larval and the immune response in adult stage of Bactrocera dorsalis...
May 9, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28485252/interspecific-interactions-in-solitary-aculeata-is-the-presence-of-heterospecifics-important-for-females-establishing-nests
#16
J Kierat, K Miler, W Celary, M Woyciechowski
There are several possible causes of aggregated nesting in solitary Aculeata, one being joint defense against parasites. We tested whether females prefer nesting in aggregations, even if they consist of heterospecifics. We compared the colonization and nesting parasitism of trap-nests with and without a red mason bee aggregation. The results did not support our hypothesis that females prefer nesting in aggregations. The numbers of wild Aculeata nests did not differ between trap-nests with and without an aggregation...
May 9, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28482938/rna-interference-mediated-knockdown-of-some-genes-involved-in-digestion-and-development-of-helicoverpa-armigera
#17
M Vatanparast, M Kazzazi, A Mirzaie-Asl, V Hosseininaveh
Helicoverpa armigera is a significant agricultural pest and particularly notorious for its resistance to many types of common insecticides. RNA interference (RNAi) is a mechanism of post-transcriptional gene silencing and trigged by double-strand RNA (dsRNA), has become a widely used reverse genetics and potent tool for insect pest control. In this study, the effect of ingestion and injection delivery methods of dsRNA related two important enzyme genes, α-amylase (HaAMY48, Ha-AMY49) and juvenile hormone esterase (Ha-JHE), were examined on growth and development of H...
May 9, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28464973/evaluation-of-fipronil-and-imidacloprid-as-bait-active-ingredients-against-fungus-growing-termites-blattodea-termitidae-macrotermitinae
#18
N Iqbal, T A Evans
Fungus-growing termites (Macrotermitinae) are important pests in tropical countries. They are difficult to control with existing baiting methods, as chitin synthesis inhibitors are not effectual as active ingredients. We tested two neurotoxins, fipronil and imidacloprid, as potential bait active ingredients against Macrotermes gilvus (Hagen) in Singapore. In laboratory bioassays, M. gilvus showed no preference for doses of 0-64 ppm fipronil, or for doses of 0-250 ppm imidacloprid, indicating no repellence. We tested each insecticide in toilet paper as a bait matrix in a field experiment...
May 3, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28464967/mechanisms-of-resistance-to-three-mite-growth-inhibitors-of-tetranychus-urticae-in-hops
#19
A W Adesanya, M A Morales, D B Walsh, L C Lavine, M D Lavine, F Zhu
Mite growth inhibitors (MGIs), such as etoxazole and hexythiazox, are valuable IPM tools for Tetranychus urticae control in hops due to their unique mode of action and selectivity. Hence, it is necessary to standardize bioassay methods to evaluate the efficacy of MGIs, monitor resistance, and identify mechanisms underlying MGI resistance in the field. Here, we developed a three-tiered approach for evaluating ovicidal toxicity of MGIs to T. urticae, which simulated different MGI exposure scenarios in the field...
May 3, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28464964/bactrocera-oleae-induced-olive-vocs-routing-mate-searching-in-psyttalia-concolor-males-impact-of-associative-learning
#20
G Giunti, G Benelli, V Palmeri, A Canale
Olfaction is a key sense routing foraging behaviour in parasitoids. Preferences for food, mate and host stimuli can be innate in parasitic wasps. Alternatively, learning-mediated mechanisms play a crucial role. Females of the braconid parasitoid Psyttalia concolor exploit olfactory cues arising from tephritid hosts and related microhabitats. However, little is known on the olfactory stimuli routing males searching for mates. In this study, we focused on the attractiveness of Bactrocera oleae-induced olive volatiles towards P...
May 3, 2017: Bulletin of Entomological Research
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