| risk of damage to tomato crops by the generalist zoophytophagous predator nesidiocoris tenuis (reuter) (hemiptera: miridae). | nesidiocoris tenuis (reuter) (hem. miridae) is a native zoophytophagous predator of the mediterranean region, and its populations colonize tomato crops when they are not heavily treated with insecticides. this generalist predator has a high capacity for controlling insect pests, and it is currently commercially produced and released in some areas to control bemisia tabaci (gennadius) (hem. aleyrodidae). however, its status as a pest and/or as beneficial is controversial. therefore, the aim of th ... | 2010 | 19366476 |
| trophic relationships between predators, whiteflies and their parasitoids in tomato greenhouses: a molecular approach. | the whiteflies bemisia tabaci gennadius and trialeurodes vaporariorum (westwood) (hemiptera: aleyrodidae) are two of the main pests in tomato crops. their biological control in mediterranean ipm systems is based on the predators macrolophus pygmaeus (rambur) and nesidiocoris tenuis reuter (hemiptera: miridae), as well as on the parasitoids eretmocerus mundus (mercet) and encarsia pergandiella howard (hymenoptera: aphelinidae). these natural enemies may interact with each other and their joint us ... | 2012 | 22314013 |
| activity of flonicamid on the sweet potato whitely bemisia tabaci (homoptera: aleyrodidae) and its natural enemies. | flonicamid is a novel systemic insecticide that acts as a feeding blocker with potential use against whiteflies within ipm control tactics. flonicamid efficacy against bemisia tabaci mediterranean populations from crete was examined, as well as side effects on selected beneficials used extensively in current ipm schemes. | 2014 | 24408346 |
| control of the tomato leafminer, tuta absoluta (lepidoptera: gelechiidae), in open-field tomatoes by indigenous natural enemies occurring in israel. | the tomato leafminer, tuta absoluta (meyrick), had established in israel by 2010, attacking both open-field tomatoes and greenhouse crops.we searched for its natural enemies in open-field tomatoes, and tried to determine their potential for controlling this pest. we surveyed the local natural enemies in open tomato fields and measured their impact on pest populations in an unsprayed field. we assessed the suppressive ability of the dominant hemipteran predator, nesidiocoris tenuis reuter, agains ... | 2016 | 26567332 |
| stage-related defense response induction in tomato plants by nesidiocoris tenuis. | the beneficial effects of direct predation by zoophytophagous biological control agents (bcas), such as the mirid bug nesidiocoris tenuis, are well-known. however, the benefits of zoophytophagous bcas' relation with host plants, via induction of plant defensive responses, have not been investigated until recently. to date, only the females of certain zoophytophagous bcas have been demonstrated to induce defensive plant responses in tomato plants. the aim of this work was to determine whether nym ... | 2016 | 27472328 |
| characterization of the symbiont rickettsia in the mirid bug nesidiocoris tenuis (reuter) (heteroptera: miridae). | nesidiocoris tenuis (reuter) (heteroptera: miridae) is an omnivorous insect used for biological control. augmentative release and conservation of n. tenuis have been used for pest control in tomato crops. intracellular bacterial symbionts of arthropods are common in nature and have diverse effects on their hosts; in some cases they can dramatically affect biological control. fingerprinting methods showed that the symbiotic complex associated with n. tenuis includes wolbachia and rickettsia. rick ... | 2014 | 25062354 |
| biological control strategies for the south american tomato moth (lepidoptera: gelechiidae) in greenhouse tomatoes. | the south american tomato pinworm, tuta absoluta (meyrick) has been introduced into new geographic areas, including the mediterranean region, where it has become a serious threat to tomato production. three greenhouse trials conducted in tomato crops during 2009 and 2010 explored control strategies using the egg-parasitoid trichogramma achaeae nagaraja and nagarkatti compared with chemical control. the effectiveness of the predator nesidiocoris tenuis (reuter) was also tested. in greenhouses wit ... | 2012 | 23356074 |
| effects of spiracle-blocking insecticides and microbial insecticides on the predator mirid bug, nesidiocoris tenuis (reuter) (heteroptera: miridae). | spiracle-blocking insecticides and microbial insecticides are widely used for integrated pest management (ipm) in japan while nesidiocoris tenuis is used for the control of thrips and whiteflies in kochi prefecture, japan. however, the effects of the insecticides mentioned above on n. tenuis were unclear. this study investigated the effects of five spiracle-blocking insecticides and two microbial insecticides on the nymphs and adults ofn. tenuis. propylene glycol fatty acid monoester was slightl ... | 2011 | 22514889 |
| optimizing nesidiocoris tenuis (hemiptera: miridae) as a biological control agent: mathematical models for predicting its development as a function of temperature. | for optimal application of nesidiocoris tenuis as a biological control agent, adequate field management and programmed mass rearing are essential. mathematical models are useful tools for predicting the temperature-dependent developmental rate of the predator. in this study, the linear model and nonlinear models logan type iii, lactin and brière were estimated at constant temperatures and validated at alternating temperatures and under field conditions. n. tenuis achieved complete development fr ... | 2016 | 26700327 |
| residual acute toxicity of some modern insecticides toward two mirid predators of tomato pests. | the successful integration of chemical and biological control strategies for crop pests depends on a thorough evaluation of the effects of pesticides on the natural enemies of pests. a case-by-case review is difficult to achieve because of the many combinations of pests, natural enemies, and crops that need to be tested. within this framework, we tested and compared seven insecticides representative of four different modes of action (moas) groups on closely related predators (miridae): flubendia ... | 2016 | 27034114 |
| intraguild predation and competitive displacement between nesidiocoris tenuis and dicyphus maroccanus, two biological control agents in tomato pests. | dicyphus maroccanus wagner and nesidiocoris tenuis reuter (hemiptera: miridae) are 2 biological control agents in tomatoes. through the crop seasons, a natural shift in the occurrence of both mirids in favor of n. tenuis has been observed at the end of the cropping cycle in eastern spain. to better optimize their conservation, the reasons for the observed change, such as intraguild interactions (igp) or the influence of environmental conditions, are worth elucidating. to do this, we first studie ... | 2017 | 27226404 |
| population genetic structure and post-lgm expansion of the plant bug nesidiocoris tenuis (hemiptera: miridae) in china. | the plant bug, nesidiocoris tenuis (hemiptera: miridae), is one of the most thermophilous dicyphines in agroecosystems and is widely distributed in china. little is known regarding the genetic structure of n. tenuis and the effect of historical climatic fluctuations on n. tenuis populations. we analyzed partial sequences of three mitochondrial protein-coding genes (coi, nd2 and cytb) and nuclear genes (5.8s, its2 and 28s) for 516 specimens collected from 37 localities across china. analyses of t ... | 2016 | 27230109 |
| impact of feeding on contaminated prey on the life parameters of nesidiocoris tenuis (hemiptera: miridae) adults. | insecticide selectivity to natural enemies is an important concern in integrated pest management programs. although there is a wide range of information concerning pesticide lethal and sublethal effects on contaminated surfaces, little is known when the route of exposure occurs at a trophic level. this study evaluates this route of pesticide intake on the omnivorous predator nesidiocoris tenuis (reuter) (hemiptera: miridae) for the first time. under laboratory conditions, prey treated with six i ... | 2016 | 27694345 |
| a novel single-stranded rna virus in nesidiocoris tenuis. | the complete genome sequence of a novel single-stranded rna virus in nesidiocoris tenuis was determined by rna-seq and rapid amplification of cdna ends (race) methodologies and was named n. tenuis virus 1. the genomic rna was 3970 nucleotides (nt) in length and contained two putative open reading frames (orfs). orf1 encoded a polypeptide with 283 amino acids containing a viral (superfamily 1) rna helicase (hel) domain, and orf2 encoded a polypeptide with 294 amino acids containing an rna-depende ... | 2017 | 28004253 |
| insights into food webs associated with the south american tomato pinworm. | the complexity of both natural and managed ecosystems involves various forms of interaction among organisms. two or more species that exploit the same resource can engage in competitive behaviours, usually referred to as intraguild interactions. these can be direct, i.e. one species feeds directly upon the competitor (intraguild predation) or indirect, e.g. when the dominant organism competes for a food source that another organism is feeding upon (kleptoparasitism). we investigated the potentia ... | 2017 | 28299894 |
| compatibility of insecticides and fungicides with the zoophytophagous mirid predator nesidiocoris tenuis. | nesidiocoris tenuis (reuter) (hemiptera: miridae) is an effective predator of multiple pests of vegetable crops, such as thrips, mites, aphids, whiteflies, leafminers. it is mass-reared and released for augmentative biocontrol programs mainly aimed at controlling whiteflies and tuta absoluta (meyrick) (lepidoptera: gelechiidae) in greenhouses and open field. we evaluated the lethal and sublethal toxicity upon n. tenuis adults of label doses of three insecticides (pyriproxyfen, spirotetramat, cyp ... | 2017 | 29095873 |
| characterization of a novel rna virus from nesidiocoris tenuis related to members of the genus iflavirus. | the complete genome of a novel virus from nesidiocoris tenuis was determined by rna-seq and rapid amplification of cdna ends. this virus has a single-stranded rna genome of 10633 nucleotides (nt) in length, not including the poly(a) tail, and contains two putative open reading frames (orfs). orf1 encodes a polypeptide of 1320 amino acids (aa) with a predicted molecular mass of 147.92 kda and theoretical isoelectric point (pi) of 6.96. orf2 encodes a polypeptide of 1728 aa with a predicted molecu ... | 2017 | 29101538 |
| expression of two barley proteinase inhibitors in tomato promotes endogenous defensive response and enhances resistance to tuta absoluta. | plants and insects have coexisted for million years and evolved a set of interactions which affect both organisms at different levels. plants have developed various morphological and biochemical adaptations to cope with herbivores attacks. however, tuta absoluta (meyrick) (lepidoptera: gelechiidae) has become the major pest threatening tomato crops worldwide and without the appropriated management it can cause production losses between 80 to 100%. | 2018 | 29370757 |
| plant resources as a factor altering emergent multi-predator effects. | multiple predator effects (mpes) can modify the strength of pest regulation, causing positive or negative deviations from those that are predicted from independent effects of isolated predators. despite increasing evidence that omnivory can shape predator-prey interactions, few studies have examined the impact of alternative plant food on interactions between multiple predators. in the present study, we examined the effects and interactions of two omnivorous mirids, μacrolophus pygmaeus and nesi ... | 2015 | 26406443 |
| zoophytophagous mirids provide pest control by inducing direct defences, antixenosis and attraction to parasitoids in sweet pepper plants. | in addition to their services as predators, mirid predators are able to induce plant defences by phytophagy. however, whether this induction occurs in sweet pepper and whether it could be an additional benefit to their role as biological control agent in this crop remains unknown. here, these questions are investigated in two model insects, the mirids nesidiocoris tenuis and macrolophus pygmaeus. | 2017 | 29274122 |
| functional response and multiple predator effects of two generalist predators preying on tuta absoluta eggs. | interactions among invertebrate predators could affect a pest suppression. the hemipteran species macrolophus pygmaeus (rambur) and nesidiocoris tenuis (reuter) (hemiptera: miridae) are natural enemies of several pests in agroecosystems and coexist in tomato crops in mediterranean countries. by using the multiplicative risk model (mrm) and the substitutive model, the multiple predator effects (mpes) on prey suppression were calculated when two individuals of the predators foraged at the same den ... | 2018 | 28815991 |
| monogamy and polygamy in two species of mirid bugs: a functional-based approach. | multiple mating in females is widespread among insects in spite of the risk of predation, disease acquisition and/or physical injury that may occur. one common consequence of female polyandry is competition among sperm from two or more males within the female to fertilize the ova. this competition is an evolutionary driving force that determines a series of adaptations in both males and females. in this work, we examine some behavioral, morphological and physiological characteristics of males an ... | 2011 | 21130096 |
| can interactions between an omnivorous hemipteran and an egg parasitoid limit the level of biological control for the tomato pinworm? | relationships between the omnivorous predator nesidiocoris tenuis (reuter) and the egg parasitoid trichogramma achaeae nagaraja and nagarkatti were studied in the laboratory (no-choice and choice assays, and functional responses) and in a greenhouse experiment. both natural enemies are utilized in the biological control of tomato pinworm on greenhouse-grown tomato crops. three different food items were offered to the predator: nonparasitized prey, prey parasitized for less than 4 d by t. achaeae ... | 2015 | 26308802 |
| effects of sublethal concentrations of insecticides on the functional response of two mirid generalist predators. | the use of agrochemicals particularly pesticides, can hamper the effectiveness of natural enemies, causing disruption in the ecosystem service of biological control. in the current study, the effects of the insecticides thiacloprid and chlorantraniliprole on the functional response curves were assessed for two mirid predator nymphs, macrolophus pygmaeus rambur and nesidiocoris tenuis reuter. in the absence of insecticides, both predators exhibited a type ii functional response when feeding on eg ... | 2015 | 26641652 |
| can the parasitoid necremnus tutae (hymenoptera: eulophidae) improve existing biological control of the tomato leafminer tuta aboluta (lepidoptera: gelechiidae)? | necremnus tutae is native to the mediterranean region where it has been observed in greenhouses parasitizing the invasive tuta absoluta on tomato. the objective of the present study was to determine whether augmentative releases of n. tutae can improve existing biological control of t. absoluta based on predation by nesidicoris tenuis. two experiments were carried out, of which the first evaluated different n. tutae release rates (1 and 2 n. tutae m-2 week-1). the parasitoid reduced plant and fr ... | 2016 | 27121181 |
| impact of the zoophytophagous plant bug nesidiocoris tenuis (heteroptera: miridae) on tomato yield. | nesidiocoris tenuis reuter (heteroptera: miridae) is one of the most controversial dicyphines because of the injuries it causes to tomato (solanum esculentum) crops. the aim of this study was to quantify the impact of n. tenuis on fruit yield. tomato plants were exposed to an average of 0.53 +/- 0.26, 3.4 +/- 1.1, 12.0 +/- 1.4, and 35.2 +/- 7.7 n. tenuis per plant for 3 wk. when fruit were exposed to n. tenuis as flowers, the percentage of aborted fruit was higher in compartments infested with n ... | 2008 | 19133468 |