Read by QxMD icon Read


Éric Kodi Ono, Odimar Zanuzo Zanardi, Kenia Fernanda Aguiar Santos, Pedro Takao Yamamoto
The impacts of six insect growth-regulators were assessed on the predator Ceraeochrysa cubana (Hagen) larvae and adults. Our results showed that diflubenzuron, lufenuron and pyriproxyfen caused 100% larva mortality, whereas buprofezin, methoxyfenozide and tebufenozide were similar to control treatment. In comparison to the control, buprofezin prolonged the duration of larval stage, while methoxyfenozide and tebufenozide reduced the predator larva development time. Buprofezin, methoxyfenozide and tebufenozide did not affect the C...
October 21, 2016: Chemosphere
Beata Borowiak-Sobkowiak, Agnieszka Woźniak, Waldemar Bednarski, Magda Formela, Sławomir Samardakiewicz, Iwona Morkunas
The aim of this study was to investigate whether and to what extent oxidative stress is induced in leaves of one- and two-month-old plants of Asparagus officinalis L. cv. Argenteuil infested by Brachycorynella asparagi (Mordvilko) at a varied population size. The pest B. asparagi has been described as the most damaging species feeding on asparagus. Analyses using electron paramagnetic resonance (EPR) demonstrated generally higher concentrations of semiquinone radicals with g-values of 2.0045 ± 0.0005 and 2...
October 20, 2016: International Journal of Molecular Sciences
Manuel Martinez, Maria Estrella Santamaria, Mercedes Diaz-Mendoza, Ana Arnaiz, Laura Carrillo, Felix Ortego, Isabel Diaz
This review deals with phytocystatins, focussing on their potential role as defence proteins against phytophagous arthropods. Information about the evolutionary, molecular and biochemical features and inhibitory properties of phytocystatins are presented. Cystatin ability to inhibit heterologous cysteine protease activities is commented on as well as some approaches of tailoring cystatin specificity to enhance their defence function towards pests. A general landscape on the digestive proteases of phytophagous insects and acari and the remarkable plasticity of their digestive physiology after feeding on cystatins are highlighted...
October 20, 2016: International Journal of Molecular Sciences
Jin Xu, Xia-Fei Wang, Peng Chen, Fang-Tao Liu, Shuai-Chao Zheng, Hui Ye, Ming-He Mo
The vast majority of lepidopterans, about 90%, are moths. Some moths, particularly their caterpillars, are major agricultural and forestry pests in many parts of the world. However, some other members of moths, such as the silkworm Bombyx mori, are famous for their economic value. Fire et al. in 1998 initially found that exogenous double-stranded RNA (dsRNA) can silence the homolog endogenous mRNA in organisms, which is called RNA interference (RNAi). Soon after, the RNAi technique proved to be very promising not only in gene function determination but also in pest control...
October 19, 2016: Genes
Gordon M Patterson
The American anti-mosquito movement grew out of the discovery of the role of mosquitoes in transferring pathogens and public concern about pest and nuisance mosquitoes in the late 1800s. In the 20th century, organized mosquito control in the United States passed through three eras: mechanical, chemical, and integrated mosquito control. Mosquito control in the 21st century faces the challenge of emerging pathogens, invasive mosquito species, and balancing concerns about the environment with effective control strategies...
October 19, 2016: Insects
P Glynn Tillman, Ted E Cottrell
Chinavia hilaris (Say), Euschistus servus (Say), Euschistus tristigmus (Say), and Thyanta custator custator (F.) (Hemiptera: Pentatomidae) are serious pests of crops in the southeastern United States but little is known concerning their dispersal from noncrop hosts in woodlands into crops. This 2-yr study was conducted to investigate whether elderberry [Sambucus nigra subsp. canadensis (L.) R. Bolli] in woodlands serves as a source of stink bugs dispersing into adjacent crops and to examine parasitism of C...
2016: Journal of Insect Science
Pedro Guilherme Lemes, José Cola Zanuncio, José Eduardo Serrão, Simon A Lawson
The Forest Stewardship Council (FSC) was the first non-governmental organization composed of multi-stakeholders to ensure the social, environmental, and economic sustainability of forest resources. FSC prohibits certain chemicals and active ingredients in certified forest plantations. A company seeking certification must discontinue use of products so listed and many face problems to comply with these constraints. The aim of this study was to assess the impacts of certification on pest management from the perspective of Brazilian private forestry sector...
October 22, 2016: Environmental Science and Pollution Research International
Oscar Heredia Díaz, José Luis Aldaba Meza, Baltazar M Baltazar, Germán Bojórquez Bojórquez, Luciano Castro Espinoza, José Luis Corrales Madrid, Juan Manuel de la Fuente Martínez, Héctor Abel Durán Pompa, José Alonso Escobedo, Armando Espinoza Banda, José Antonio Garzón Tiznado, Juvencio González García, José Luis Guzmán Rodríguez, Jesús Ignacio Madueño Martínez, José Luis Martínez Carrillo, Chen Meng, Francisco Javier Quiñones Pando, Enrique Rosales Robles, Ignacio Ruiz Hernández, José Elías Treviño Ramírez, Hugo Raúl Uribe Montes, Francisco Zavala García
Environmental risk assessment (ERA) of genetically modified (GM) crops is a process to evaluate whether the biotechnology trait(s) in a GM crop may result in increased pest potential or harm to the environment. In this analysis, two GM insect-resistant (IR) herbicide-tolerant maize hybrids (MON-89Ø34-3 × MON-88Ø17-3 and MON-89Ø34-3 × MON-ØØ6Ø3-6) and one herbicide-tolerant GM hybrid (MON-ØØ6Ø3-6) were compared with conventional maize hybrids of similar genetic backgrounds. Two sets of studies, Experimental Phase and Pilot Phase, were conducted across five ecological regions (ecoregions) in Mexico during 2009-2013, and data were subject to meta-analysis...
October 22, 2016: Transgenic Research
Jun Tabata, Ryoko T Ichiki
The cotton mealybug, Phenacoccus solenopsis, the distribution of which was formerly limited to Nearctic and Neotropical regions, recently invaded many countries in various regions including Asia, Africa, and the Pacific. More recently, P. solenopsis was newly recorded in Japan and is currently an emerging pest of agricultural crops. In this study, we determined the structure of a sex pheromone of P. solenopsis in order to develop an effective lure for monitoring this pest. From volatiles emitted by virgin adult females, we isolated a compound attractive to males...
October 22, 2016: Journal of Chemical Ecology
L C Perkin, E N Elpidina, B Oppert
Tribolium castaneum is a major agriculture pest damaging stored grains and cereal products. The T. castaneum genome contains 26 cysteine peptidase genes, mostly cathepsins L and B, and seven have a major role in digestion. We targeted the expression of the most highly expressed cathepsin L gene on chromosome 10, TC011001, by RNA interference (RNAi), using double-stranded RNA (dsRNA) constructs of different regions of the gene (3', middle, 5' and entire coding regions). RNA sequencing and quantitation (RNA-seq) was used to evaluate knockdown and specificity amongst the treatments...
October 22, 2016: Insect Molecular Biology
Emeli Torsson, Tebogo Kgotlele, Mikael Berg, Niwael Mtui-Malamsha, Emanuel S Swai, Jonas Johansson Wensman, Gerald Misinzo
Peste des petits ruminants virus (PPRV) causes the acute, highly contagious disease peste des petits ruminants (PPR) that affects small domestic and wild ruminants. PPR is of importance in the small livestock-keeping industry in Tanzania, especially in rural areas as it is an important source of livelihood. Morbidity and case fatality rate can be as high as 80-100% in naïve herds; however, in endemic areas, morbidity and case fatality range between 10 and 100% where previous immunity, age, and species of infected animal determine severity of outcome...
2016: Infection Ecology & Epidemiology
Sainath S Kasar, Kiran R Marathe, Amey J Bhide, Abhijeet P Herwade, Ashok P Giri, Vijay L Maheshwari, Pankaj K Pawar
BACKGROUND: Identification and characterization of plant defensive molecules enrich our resources to design crop protection strategies. In particular, plant derived proteinaceous inhibitor(s) of insect digestive enzymes appear to be a safe, sustainable and attractive option. RESULTS: A glycoprotein having non-competitive α-amylase inhibitory activity with molecular weight 8.3 kDa was isolated and purified from seeds of Withania somnifera (WSAI). Its mass spectrometry analysis revealed 59% sequence coverage with Wrightide II type α-AI from Wrightia religiosa...
October 22, 2016: Pest Management Science
Omar Santana-Méridas, Azucena González-Coloma, Maria Fe Andrés, Veroniki P Vidali, Moschos G Polissiou, Athanasios C Kimbaris
Essential oils from Greek Mentha species showed different chemical compositions for two populations of M. pulegium, characterized by piperitone and pulegone. M. spicata essential oil was characterized by endocyclic piperitenone epoxide, piperitone epoxide, and carvone. The bioactivities of these essential oils and their components have been tested against insect pests (Leptinotarsa decemlineata, Spodoptera littoralis and Myzus persicae), root-knot nematodes (Meloydogine javanica) and plants (Lactuca sativa, Lolium perenne, Solanum lycopersicum)...
October 21, 2016: Chemistry & Biodiversity
Liuyu Wu, Xiao Xiong, Xuming Wang, Tianrong Xin, Jing Wang, Zhiwen Zou, Bin Xia
The bluish yellow lappet moth, Trabala vishnou guttata is an extraordinarily important pest in China. The complete mitochondrial genome is sequenced and determined firstly, which is based on traditional PCR amplification and primer walking methods with a length of 15,281 bp, including 13 protein-coding (PCG) genes, 22 transfer RNA (rRNA) genes, two ribosomal RNA (tRNA) genes, and an A + T-rich region. The gene order and orientation of the T. vishnou guttata mitogenome were identical to the other sequenced Lasiocampidae species...
October 21, 2016: Genetica
Jialin Zhang, Wenxing Liu, Weiye Chen, Cuicui Li, Meimei Xie, Zhigao Bu
From 2013 to 2015, peste des petits ruminants (PPR) broke out in more than half of the provinces of China; thus, the application and development of diagnostic methods are very important for the control of PPR. Here, an immunoperoxidase monolayer assay (IPMA) was developed to detect antibodies against PPR. However, during IPMA development, we found that Vero cells were not the appropriate choice because staining results were not easily observed. Therefore, we first established a baby hamster kidney-goat signaling lymphocyte activation molecule (BHK-SLAM) cell line that could stably express goat SLAM for at least 20 generations...
2016: PloS One
Dirk Louis P Schorkopf, Christos G Spanoudis, Leonard E G Mboera, Agenor Mafra-Neto, Rickard Ignell, Teun Dekker
BACKGROUND: There is a global need for cost-effective and environmentally friendly tools for control of mosquitoes and mosquito-borne diseases. One potential way to achieve this is to combine already available tools to gain synergistic effects to reduce vector mosquito populations. Another possible way to improve mosquito control is to extend the active period of a given control agent, enabling less frequent applications and consequently, more efficient and longer lasting vector population suppression...
October 2016: PLoS Neglected Tropical Diseases
Fan Xiaojun, Yang Chun, Liu Jianhong, Zhang Chang, Li Yao
The Asian gypsy moth (Lymantria dispar) is a serious pest of forest and shade trees in many Asian and some European countries. However, there have been few studies of L. dispar genetic information and comprehensive genetic analyses of this species are needed in order to understand its genetic and metabolic sensitivities, such as the molting mechanism during larval development. In this study, high-throughput sequencing technology was used to sequence the transcriptome of the Asian subspecies of the gyspy moth, after which a comprehensive analysis of chitin metabolism was undertaken...
October 20, 2016: Genetics and Molecular Biology
Paolo Gabrieli, Francesca Scolari
The Mediterranean fruit fly (medfly) Ceratitis capitata (Wiedemann) (Diptera: Tephritidae) is a pest species with extremely high agricultural relevance. This is due to its reproductive behavior: females damage the external surface of fruits and vegetables when they lay eggs and the hatched larvae feed on their pulp. Wild C. capitata populations are traditionally controlled through insecticide spraying and/or eco-friendly approaches, the most successful being the Sterile Insect Technique (SIT). The SIT relies on mass-rearing, radiation-based sterilization and field release of males that retain their capacity to mate but are not able to generate fertile progeny...
October 1, 2016: Journal of Visualized Experiments: JoVE
Joanne E Littlefair, Elizabeth L Clare
Society faces the complex challenge of supporting biodiversity and ecosystem functioning, while ensuring food security by providing safe traceable food through an ever-more-complex global food chain. The increase in human mobility brings the added threat of pests, parasites, and invaders that further complicate our agro-industrial efforts. DNA barcoding technologies allow researchers to identify both individual species, and, when combined with universal primers and high-throughput sequencing techniques, the diversity within mixed samples (metabarcoding)...
September 2, 2016: Genome Génome / Conseil National de Recherches Canada
Yong-Cheng Dong, Zhi-Jian Wang, Zhen-Zhong Chen, Anthony R Clarke, Chang-Ying Niu
RNA interference (RNAi) is a genetic technique which has novel application for sustainable pest control. The Sterile Insect Technique (SIT) uses releases of mass-produced, sterile male insects to out-compete wild males for mates to reduce pest populations. RNAi sterilization of SIT males would have several advantages over radiation sterilization, but to achieve this appropriate target genes must first be identified and then targeted with interference technology. With this goal, eight spermatogenesis related candidate genes were cloned and tested for potential activity in Bactrocera dorsalis...
October 21, 2016: Scientific Reports
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"