journal
MENU ▼
Read by QxMD icon Read
search

Bulletin of Entomological Research

journal
https://www.readbyqxmd.com/read/28929990/microbial-composition-affects-the-performance-of-an-artificial-tephritid-larval-diet
#1
P Rempoulakis, S Sela Saldinger, E Nemny-Lavy, R Pinto, A Birke, D Nestel
The present study investigated the patterns of microorganisms in an artificial larval diet during Dacus ciliatus (Diptera; Tephritidae) larval development. Microbial population contents in the diet of total heterotrophic bacteria, yeast and molds, coliform and lactobacilli, and their dynamics during development, were monitored. Initially, the microbial composition in diet trays failing to produce viable pupae and in trays successfully producing pupae and adult flies was characterized. The failing diet trays contained large populations of lactobacilli that increased during larval development, and low populations of coliforms...
September 20, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28925346/the-effect-of-winter-length-on-duration-of-dormancy-and-survival-of-specialized-herbivorous-rhagoletis-fruit-flies-from-high-elevation-environments-with-acyclic-climatic-variability
#2
J Rull, E Tadeo, R Lasa, M Aluja
Dormancy can be defined as a state of suppressed development allowing insects to cope with adverse conditions and plant phenology. Among specialized herbivorous insects exploiting seasonal resources, diapause frequently evolves as a strategy to adjust to predictable plant seasonal cycles. To cope with acyclic and unpredictable climatic events, it has been found for some insects that a proportion of the population undergoes prolonged dormancy. We compared the response of three species in the Rhagoletis cingulata species group exploiting plants differing in fruiting phenology from environments varying in frequency and timing of acyclic climatic catastrophic events (frost during flowering and fruit set) and varying also in the time of the onset of the rainy season...
September 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28925339/improving-the-artificial-diet-for-adult-of-seven-spotted-ladybird-beetle-coccinella-septempunctata-l-coleoptera-coccinellidae-with-orthogonal-design
#3
Y Cheng, J R Zhi, F L Li, W H Li, Y H Zhou
In this study, an orthogonal array design with 16 factors at two levels (216) was performed to develop an artificial diet rearing the adults of seven spotted ladybird beetle Coccinella septempunctata. The parameters of weight gain and survival rate of adults, preoviposition period, fecundity and hatching rate of diet-fed adults were monitored. The 16 factors were included: pork liver, infant formula, sucrose, olive oil, yolk, corn oil, yeast powder, cholesterol, casein, casein hydrolysate, vitamin powder, 65% juvenile hormone III, protein powder, vitamin E, honey and pumpkin...
September 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28925338/foraging-behaviour-of-the-exotic-wasp-vespula-germanica-hymenoptera-vespidae-on-a-native-caterpillar-defoliator
#4
A L Pietrantuono, S Moreyra, M Lozada
Vespula germanica is a social wasp and an opportunistic predator. While foraging, these wasps learn and integrate different kinds of cues. They have successfully invaded many parts of the world, including native Nothofagus and Lophozonia forests located in the Andean-Patagonian region, where they forage on native arthropods. Perzelia arda, a lepidopteron defoliator of Lophozonia obliqua, uses the foliage to hide in and feed on. The purpose of this work is to study whether V. germanica use olfactory cues when foraging on P...
September 19, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28920566/field-evolved-resistance-to-%C3%AE-cyhalothrin-in-the-lady-beetle-eriopis-connexa
#5
P M G Costa, J B Torres, V M Rondelli, R Lira
Natural enemies are exposed to insecticide sprays for herbivorous species and may evolve field resistance to insecticides. Natural enemies selected for resistance in the field, however, are welcome for pest control. The susceptibility of 20 populations of Eriopis connexa from various crop ecosystems to λ-cyhalothrin was tested. Three bioassays were conducted: (i) topical treatment with lethal dose (LD)50 previously determined for populations considered standard for susceptibility (LD50S) and for resistance (LD50R) to λ-cyhalothrin at technical grade; (ii) dose-mortality assay to calculate the LD for populations exhibiting significant survival to the LD50R; and (iii) determination of survival when exposed to dried residues at field rates...
September 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28920565/regulatory-functions-of-trehalose-6-phosphate-synthase-in-the-chitin-biosynthesis-pathway-in-tribolium-castaneum-coleoptera-tenebrionidae-revealed-by-rna-interference
#6
Q W Chen, S Jin, L Zhang, Q D Shen, P Wei, Z M Wei, S G Wang, B Tang
RNA interference (RNAi) is a very effective technique for studying gene function and may be an efficient method for controlling pests. Trehalose-6-phosphate synthase (TPS), which plays a key role in the synthesis of trehalose and insect development, was cloned in Tribolium castaneum (Herbst) (TcTPS) and the putative functions were studied using RNAi via the injection of double-stranded RNA (dsRNA) corresponding to conserved TPS and trehalose-6-phosphate phosphatase domains. Expression analyses show that TcTPS is expressed higher in the fat body, while quantitative real-time polymerase chain reaction results show that the expression of four trehalase isoforms was significantly suppressed by dsTPS injection...
September 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28920560/indirect-evidence-of-pathogen-associated-altered-oocyte-production-in-queens-of-the-invasive-yellow-crazy-ant-anoplolepis-gracilipes-in-arnhem-land-australia
#7
M D Cooling, B D Hoffmann, M A M Gruber, P J Lester
Anoplolepis gracilipes is one of the six most widespread and pestiferous invasive ant species. Populations of this invader in Arnhem Land, Australia have been observed to decline, but the reasons behind these declines are not known. We investigated if there is evidence of a pathogen that could be responsible for killing ant queens or affecting their reproductive output. We measured queen number per nest, fecundity and fat content of queens from A. gracilipes populations in various stages of decline or expansion...
September 18, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28893328/plasticity-in-host-utilization-by-two-host-associated-populations-of-aphis-gossypii-glover
#8
A K Barman, K R Gadhave, B Dutta, R Srinivasan
Biological and morphological plasticity in polyphagous insect herbivores allow them to exploit diverse host plant species. Geographical differences in resource availability can lead to preferential host exploitation and result in inconsistent host specialization. Biological and molecular data provide insights into specialization and plasticity of such herbivore populations. In agricultural landscapes, Aphis gossypii encounters several crop and non-crop hosts, which exist in temporal and spatial proximity. We investigated the host-specialization of two A...
September 12, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28893327/new-activity-of-yamamarin-an-insect-pentapeptide-on-immune-system-of-mealworm-tenebrio-molitor
#9
K Walkowiak-Nowicka, G Nowicki, M Kuczer, G Rosiński
In insects, two types of the immune responses, cellular and humoral, constitute a defensive barrier against various parasites and pathogens. In response to pathogens, insects produce a wide range of immune agents that act on pathogens directly, such as cecropins or lysozyme, or indirectly by the stimulation of hemocyte migration or by increasing phenoloxidase (PO) activity. Recently, many new immunologically active substances from insects, such as peptides and polypeptides, have been identified. Nevertheless, in the most cases, their physiological functions are not fully known...
September 12, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28891462/co-infection-with-a-wheat-rhabdovirus-causes-a-reduction-in-mal-de-r%C3%A3-o-cuarto-virus-titer-in-its-planthopper-vector
#10
A D Dumón, E B Argüello Caro, M F Mattio, V Alemandri, M Del Vas, G Truol
Mal de Río Cuarto virus (MRCV, Fijivirus, Reoviridae) causes one of the most important diseases in maize (Zea mays L.) in Argentina and has been detected in mixed infections with a rhabdovirus closely related to Maize yellow striate virus. In nature both viruses are able to infect maize and several grasses including wheat, and are transmitted in a persistent propagative manner by Delphacodes kuscheli Fennah (Hemiptera: Delphacidae). This work describes the interactions between MRCV and rhabdovirus within their natural vector and the consequences of such co-infection regarding virus transmission and symptom expression...
September 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28891460/source-of-hyalesthes-obsoletus-signoret-planthopper-hemiptera-cixiidae-in-southern-france-and-potential-effects-of-landscape
#11
L Hossard, S Guimier, F Vinatier, J M Barbier, S Delmotte, M Fontaine, J B Rivoal
Cixiid planthoppers are considered of major economic importance, as they can transmit phytoplasmas responsible for many plant diseases. While thorougly studied in vineyards, the epidemiology of stolbur phytoplasma, transmitted by Hyalesthes obsoletus Signoret, was rarely investigated on minor crops as lavender, where it leads to 'yellow decline' disease and large economic losses. The objective of this paper is to understand the effect of the local landscape characteristics on the presence and density of H. obsoletus in the 'Plateau de Valensole', southern France...
September 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28889807/no-nutritional-benefits-of-egg-cannibalism-for-coleomegilla-maculata-coleoptera-coccinellidae-on-a-high-quality-diet
#12
A H Abdelwahab, J P Michaud, M H Bayoumy, S S Awadalla, M El-Gendy
Egg cannibalism serves various functions in the Coccinellidae. Here we examined the fitness consequences of egg cannibalism by neonates, fourth instar larvae, and prereproductive adults of Coleomegilla maculata DeGeer, with beetles fed a diet of Ephestia kuehniella Zeller eggs. Cannibalism of two eggs by neonates had no effect on development, and cannibalism of five eggs by fourth instars did not benefit any aspect of reproduction, but delayed pupation slightly. Cannibalism of eggs by pre-reproductive adults had no effect on reproductive success in any combination of reciprocal crosses of cannibals and non-cannibals...
September 11, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28877774/complete-mitochondrial-genome-of-bamboo-grasshopper-ceracris-fasciata-and-the-phylogenetic-analyses-and-divergence-time-estimation-of-caelifera-orthoptera
#13
S Gao, J J Chen, G F Jiang
The bamboo grasshopper Ceracris fasciata is regarded as a major pest species because of the damage it causes to bamboo, and its classification within the families and subfamilies of the suborder Caelifera remains unclear. Thus, we attempted to resolve these questions using molecular biology methods and analyses. Our results are as follows: (1) the complete mitochondrial genome of C. fasciata is 15,569 bp in length. The mitochondrial genome contains a standard set of 13 protein-coding genes, 22 transfer RNA genes, 2 ribosomal RNA genes and an A + T-rich region in the same order as those of the other analysed Caeliferan species...
September 7, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28835290/temperature-dependent-development-of-helicoverpa-armigera-h%C3%A3-bner-lepidoptera-noctuidae-and-its-larval-parasitoid-habrobracon-hebetor-say-hymenoptera-braconidae-implications-for-species-interactions
#14
M Noor-Ul-Ane, M Ali Mirhosseini, N Crickmore, S Saeed, I Noor, M P Zalucki
Habrobracon hebetor (Say) is a parasitoid of various Lepidoptera including Helicoverpa armigera (Hübner), a key pest of different crops and vegetables. The development of both H. armigera and H. hebetor were simultaneously evaluated against a wide range of constant temperatures (10, 15, 17.5, 20, 25, 27.5, 30, 35, 37.5 and 40 °C). Helicoverpa armigera completed its development from egg to adult within a temperature range of 17.5-37.5 °C and H. hebetor completed its life cycle from egg to adult within a temperature range of 15-40 °C...
August 24, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28807085/variation-in-bacterial-endosymbionts-associated-with-the-date-palm-hopper-ommatissus-lybicus-populations
#15
S Karimi, H Izadi, M Askari Seyahooei, A N Bagheri, P Khodaygan
The date palm hopper, Ommatissus lybicus, is a key pest of the date palm, which is expected to be comprised of many allopatric populations. The current study was carried out to determine bacterial endosymbiont diversity in the different populations of this pest. Ten date palm hopper populations were collected from the main date palm growing regions in Iran and an additional four samples from Pakistan, Oman, Egypt and Tunisia for detection of primary and secondary endosymbionts using polymerase chain reaction (PCR) assay with their specific primers...
August 15, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28803567/effects-of-delayed-mating-on-the-reproductive-biology-of-the-vine-mealybug-planococcus-ficus-hemiptera-pseudococcidae
#16
A Lentini, A Mura, E Muscas, M T Nuvoli, A Cocco
The effect of increasing mating delay on the reproductive performance and population growth rates of the vine mealybug, Planococcus ficus (Signoret) (Hemiptera: Pseudococcidae), was investigated under laboratory conditions. Virgin females were mated at 1, 3, 5, 7, 14, 21 and 28 days after emergence and reproductive and life table parameters were estimated. The pre-oviposition period (number of days between mating and the onset of oviposition) significantly decreased in females mated within 7 days, whereas females mated at older ages showed equivalent pre-oviposition periods (7 days, as shorter delays in mating did not reduce the population growth rates...
August 14, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28803552/effect-of-acaricidal-components-isolated-from-lettuce-lactuca-sativa-on-carmine-spider-mite-tetranychus-cinnabarinus-boisd
#17
M Li, Y Zhang, W Ding, J Luo, S Li, Q Zhang
This study aimed to evaluate the acaricidal activity of lettuce (Lactuca sativa) extracts against carmine spider mites (Tetranychus cinnabarinus Boisd.) and isolate the acaricidal components. Acaricidal activities of lettuce extracts isolated from different parts (the leaf, root and seed) using various solvents (petroleum ether, acetone and methanol) were evaluated with slide-dip bioassay and relatively high median lethal concentration (LC50) values were detected. Acetone extracts of lettuce leaves harvested in July and September were fractionated and isolated with silica gel and thin-layer chromatography...
August 14, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28786374/population-dynamics-of-eldana-saccharina-walker-lepidoptera-pyralidae-application-of-a-biophysical-model-to-understand-phenological-variation-in-an-agricultural-pest
#18
E Kleynhans, M G Barton, D E Conlong, J S Terblanche
Understanding pest population dynamics and seasonal phenology is a critical component of modern integrated pest-management programs. Accurate forecasting allows timely, cost-effective interventions, including maximum efficacy of, for example, biological control and/or sterile insect technique. Due to the variation in life stage-related sensitivity toward climate, insect pest population abundance models are often not easily interpreted or lack direct relevance to management strategies in the field. Here we apply a process-based (biophysical) model that incorporates climate data with life stage-dependent physiology and life history to attempt to predict Eldana saccharina life stage and generation turnover in sugarcane fields...
August 8, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28786372/spatial-and-temporal-distribution-environmental-drivers-and-community-structure-of-mosquitoes-in-the-kaipara-harbour-new-zealand
#19
R P Cane, S Hartley, B Gradwell, M Singe
Mosquito communities across the globe frequently comprise a mix of native and cosmopolitan species. New Zealand's mosquito communities are no exception. Here we describe the abundance, distribution and phenological patterns for a community of six mosquito taxa resident across the Kaipara Harbour region of northern New Zealand. Adult mosquitoes were sampled using baited light traps, serviced biweekly for 3½ years. Seasonal fluctuations in abundance of adults were examined for correlations with temperature and rainfall over the preceding weeks...
August 8, 2017: Bulletin of Entomological Research
https://www.readbyqxmd.com/read/28770695/spatial-distribution-of-aedes-aegypti-and-aedes-albopictus-in-relation-to-geo-ecological-features-in-south-andaman-andaman-and-nicobar-islands-india
#20
A N Shriram, A Sivan, A P Sugunan
The study was undertaken in South Andaman district, comprising three tehsils, viz. Port Blair, Ferrargunj and Little Andaman Tehsils, respectively. Intensive pupal infestation surveys were carried out along the National Highway (NH 223), the main passenger and trade route, referred to as Great Andaman Trunk Road. Sampling locations at every 3 km were geo-referenced with global positioning system unit. A total of 17314 water collections were examined from 29 locations across the South Andaman district, among which 1021 (5...
August 3, 2017: Bulletin of Entomological Research
journal
journal
25491
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"