Herbivorous insects have developed mechanisms to cope with plant barriers, including enzymatic systems detoxify allelochemicals. Detoxification may be induced when are feeding on plants increasing levels of Increases in activity been related energetic costs, and therefore less energy allocated fitness-related traits. In this study, we explored the induction costs detoxifying hydroxamic acids (Hx; a wheat allelochemical) grain aphid, Sitobion avenae. Aphids were reared three cultivars...

Abstract Biological invasions are rapid evolutionary events in which populations usually subject to a founder event during introduction followed by adaptation the new environment. Molecular tools and Bayesian approaches have shown their utility exploring different scenarios regarding invasion routes of introduced species. We examined situation for tobacco aphid, Myzus persicae nicotianae , recently aphid species Chile. Using seven microsatellite loci approximate computation, we studied...

Despite ongoing interest in deploying information and communication technologies (ICTs) for sustainable development, their use climate change adaptation remains understudied. Based on the integration of theory existing literature ICTs we present an analytical model conceptualizing contribution to adaptation, a framework evaluating ICT success. We apply four case studies early warning systems managing extreme events Latin American Caribbean countries. propose that can support through enabling...

Journal Article Evaluation of Azinphos-Methyl Resistance and Activity Detoxifying Enzymes in Codling Moth (Lepidoptera: Tortricidae) from Central Chile Get access Eduardo Fuentes-Contreras, Fuentes-Contreras Search for other works by this author on: Oxford Academic PubMed Google Scholar Maritza Reyes, Reyes Wilson Barros, Barros Benoît Sauphanor Economic Entomology, Volume 100, Issue 2, 1 April 2007, Pages 551–556, https://doi.org/10.1093/jee/100.2.551 Published: 26 September 2014

Journal Article Population Genetic Structure of Codling Moth (Lepidoptera: Tortricidae) from Apple Orchards in Central Chile Get access Eduardo Fuentes-Contreras, Fuentes-Contreras 2 1Departamento de Producción Agrícola, Facultad Ciencias Agrarias, Universidad Talca, Casilla 747, Chile. 2Corresponding author, e-mail: efuentes@utalca.cl Search for other works by this author on: Oxford Academic PubMed Google Scholar Juan L. Espinoza, Espinoza Blas Lavandero, Lavandero Chile.3Instituto Biología...

Codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), is the main pest of pome fruits worldwide. Despite its economic importance, little known about genetic structure and patterns dispersal at local regional scale, which are important aspects for establishing a control strategy this pest. An analysis variability using microsatellites was performed 11 codling moth populations in two major apple (Malus domestica Borkh) cropping regions central Chile. geographical distances between...

Regular applications of insecticides have been the main management practice against codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae) in Chile. Organophosphates are most widely used insecticides, and azinphos-methyl is an important element spray programs. In particular, we evaluated diagnostic doses on neonate postdiapausing larvae from seven apple (Malus spp.) orchards. We also activity detoxifying enzymes, such as glutathione S-transferases (GSTs), cytochrome P450 polysubstrate...

We analyzed the spatial distribution and dispersal of codling moth, Cydia pomonella (L.), adults within two heterogeneous agroecosystems typical central Chile: commercial apple, Malus domestica Borkhausen, orchards surrounded by various unmanaged host plants. Both a geostatistical analysis catches adult males with grid sex pheromone-baited traps an immunological self-marking technique combined baited male female attractant were used. The analyses identified key sources moths these diverse...

The development of insecticide resistance in pest insects is an increasing problem for agriculture, forestry and public health. Aphids are ubiquitous herbivorous insects, with approximately 4700 known species, which less than 5% exploit the agricultural environment successfully. Of these, peach‐potato aphid Myzus persicae Sulzer recognized as one most important pests worldwide because it has acquired to many insecticides. Although insecticides provides benefits fields that treated...

Semiochemicals released by plant-microbe associations are used herbivorous insects to access and evaluate food resources oviposition sites. Adult may utilize microbial-derived nutrients prolong their lifespan, promote egg development, offer a high nutritional substrate offspring. Here, we examined the behavioral role of semiochemicals from grape-microbe interactions on field attraction grapevine moth Lobesia botrana (Denis & Schiffermüller). The volatile constituents grape inoculated with...

Abstract Studies of moth pests (Lepidoptera: Tortricidae) pome fruit in Washington State, USA, evaluated the addition low‐intensity light‐emitting diode (LED) lights to traps baited with sex pheromone or kairomone lures. Species included codling (CM), Cydia pomonella (L.), oriental (OFM), Grapholita molesta (Busck), oblique banded leafroller (OBLR), Choristoneura rosaceana (Harris), and eye‐spotted budmoth (ESBM), Spilonota ocellana (Denis Schiffenmüller). Lures ( E,E )‐8,10‐dodecadien‐1‐ol...

Abstract The tobacco-feeding race of Myzus persicae (Sulzer), formerly known as M. nicotianae Blackman, was introduced into Chile during the last decade. In order to evaluate genetic diversity and insecticide resistance status Chilean tobacco aphid populations, a field survey conducted in 35 fields covering 300 km latitudinal survey. populations sampled were characterized using microsatellite markers morphometric multivariate analysis. Insecticide levels assessed through microplate esterase...

Abstract Experiments were conducted in N orth and S outh A merica during 2012–2013 to evaluate the use of lure combinations sex pheromones ( PH ), host plant volatiles HPVs ) food baits traps capture oriental fruit moth, G rapholita molesta B usck), codling C ydia pomonella L .), pome stone orchards treated with pheromones. The combination pheromone both species combo lure) significantly increased . marginally decreased captures as compared each either their alone. addition a HPV [( E , Z...

Journal Article Survey of Resistance to Four Insecticides and their Associated Mechanisms in Different Genotypes the Green Peach Aphid (Hemiptera: Aphididae) From Chile Get access Eduardo Fuentes-Contreras, Fuentes-Contreras 1Departamento de Producción Agrícola, Facultad Ciencias Agrarias, Universidad Talca, Casilla 747, Chile. 2Corresponding author,e-mail: efuentes@utalca.cl. Search for other works by this author on: Oxford Academic PubMed Google Scholar Christian C. Figueroa, Figueroa...

Abstract The Palaeoarctic parasitoid Aphidius ervi Haliday (Hymenoptera, Aphidiidae) parasitises legume aphids in its region of origin. In Chile, it both and cereal aphids. This special situation was studied at two levels: (i) the host searching behaviour A. from different tritrophic systems ( Acyrthosiphon pisum on alfalfa Sitobion avenae wheat) investigated dual choice tests a wind tunnel between odours ‐alfalfa plant complex (HPC) S. ‐wheat HPC, (ii) genetic structure populations sources...

Studies were conducted in the Maule Region to characterize phenology of codling moth, Cydia pomonella (L.)The Predictive Extension Timing Estimator (PETE) and a logistic phenological model validated with eight data sets cumulative moth catches sex pheromone (PH) kairomone-baited traps occurrence fruit injuries from apple (Malus domestica Borkh.)orchards during 2009-2011 seasons.Second, start egg hatch was predicted first sustained male female (biofix) baited pear ester (PE), PE+acetic acid...

Myzus persicae (Sulzer) is a highly polyphagous aphid species, with subspecies (M.persicae nicotianae) well adapted to tobacco (Nicotiana tabacum L.).We evaluated the effect of this host plant on performance and detoxification enzymes, in order test participation xenobiotic metabolism ability overcome chemical defences.Two genotypes, one corresponding only M. nicotianae genotype reported Chile tobacco, belonging sensu stricto were reared pepper (Capsicum annuum L.), respectively.M. showed...

The codling moth, Cydia pomonella (L.), is the key pest of apple production worldwide. Insecticide resistance has been reported in all producing countries, based on five different mechanisms. Codling moth Chile to azinphos-methyl and tebufenozide post-diapausing larvae. However, there are no studies about susceptibility these populations insecticides from other chemical groups. Therefore, efficacy azinphos-methyl, chlorpyrifos-ethyl, esfenvalerate, methoxyfenozide, tebufenozide, thiacloprid...

Abstract Male and female moth catches of Grapholita molesta (Busck) in traps were evaluated stone pome fruit orchards untreated or treated with sex pheromones for mating disruption Uruguay, Argentina, Chile, USA, Italy from 2015 to 2017. Trials various blends loaded into either membrane cup lures septa. Membrane terpinyl acetate (TA), acetic acid (AA) ( Z )‐3‐hexenyl alone combinations. Two septa the three‐component pheromone blend G. combination codlemone (2‐PH), Cydia pomonella (L). A...