| wolbachia infection complexity among insects in the tropical rice-field community. | wolbachia are a group of intracellular bacteria that cause reproductive alterations in their arthropod hosts. widely discordant host and wolbachia phylogenies indicate that horizontal transmission of these bacteria among species sometimes occurs. a likely means of horizontal transfer is through the feeding relations of organisms within communities. feeding interactions among insects within the rice-field insect community have been well documented in the past. here, we present the results of a po ... | 2003 | 12753223 |
| selection of nectar plants for use in ecological engineering to promote biological control of rice pests by the predatory bug, cyrtorhinus lividipennis, (heteroptera: miridae). | ecological engineering for pest management involves the identification of optimal forms of botanical diversity to incorporate into a farming system to suppress pests, by promoting their natural enemies. whilst this approach has been extensively researched in many temperate crop systems, much less has been done for rice. this paper reports the influence of various plant species on the performance of a key natural enemy of rice planthopper pests, the predatory mirid bug, cyrtorhinus lividipennis. ... | 2014 | 25254377 |
| temporal interactions of plant - insect - predator after infection of bacterial pathogen on rice plants. | pathogenic infection on plants may affect interactions of host-plants with their herbivores, as well as the herbivores with their predators. in this study, the effects of infection by pathogenic bacterium xanthomonas oryzae pv. oryzae (xoo), which causes a vascular disease in rice, on rice plants and consequent interactions with a rice herbivore, brown rice planthopper (bph) nilaparvata lugens, and its major predator, cyrtorhinus lividipennis, were investigated. the results showed that the rice ... | 2016 | 27185548 |
| no direct effects of two transgenic bt rice lines, t1c-19 and t2a-1, on the arthropod communities. | a 2-yr field trial was conducted to assess the impacts of two new transgenic bt rice lines, t1c-19 expressing cry1c protein and t2a-1 expressing cry2a protein, on the arthropod community sampled via vacuum. all the arthropods were classified into five guilds, including herbivores, parasitoids, predators, detritivores, and others. the seasonal density and dominance distribution of each guild and community-level indices (species richness, shannon-wiener diversity index, simpson diversity index, an ... | 2014 | 25203669 |
| bt rice expressing cry2aa does not harm cyrtorhinus lividipennis, a main predator of the nontarget herbivore nilapavarta lugens. | t2a-1 is a newly developed transgenic rice that expresses a synthesized cry2aa gene driven by the maize ubiquitin promoter. t2a-1 exhibits high resistance against lepidopteran pests of rice. the brown planthopper, nilapavarta lugens (stål), is a main nontarget sap-sucking insect pest of rice, and cyrtorhinus lividipennis (reuter) is the major predator of the eggs and young nymphs of planthoppers. as c. lividipennis may expose to the cry2aa protein via n. lugens, it is therefore essential to asse ... | 2014 | 25375147 |
| identification of key amino acid differences between cyrtorhinus lividipennis and nilaparvata lugens nachr α8 subunits contributing to neonicotinoid sensitivity. | high sensitivity to neonicotinoid insecticides have been reported in the miridbug cyrtorhinus lividipennis, an important predatory enemy of rice planthoppers, such as nilaparvata lugens (brown planthopper). in the present study, the sensitivity of neonicotinoid insecticides between c. lividipennis and n. lugens were detected and compared. the results showed that neonicotinoid insecticides were much more toxic to the miridbug than to the brown planthopper. a nicotinic acetylcholine receptor subun ... | 2015 | 25613467 |
| identification of polymorphisms in cyrtorhinus lividipennis rdl subunit contributing to fipronil sensitivity. | as one of the most important predatory enemies, the miridbug, cyrtorhinus lividipennis, plays an important role in rice planthoppers control, such as nilaparvata lugens (brown planthopper). in order to compare insecticide selectivity between c. lividipennis and n. lugens, the contact acute toxicities of six insecticides (diazoxon, paraoxon, carbaryl, fenobucarb, fipronil and ethofenprox) were monitored. the results showed that all tested insecticides were more toxic to c. lividipennis than to n. ... | 2015 | 25619913 |
| inductions of reproduction and population growth in the generalist predator cyrtorhinus lividipennis (hemiptera: miridae) exposed to sub-lethal concentrations of insecticides. | the miridbug, cyrtorhinus lividipennis, is a significant predacious enemy of rice planthoppers. the effects of sub-lethal concentrations of triazophos, deltamethrin and imidacloprid on fecundity, egg hatchability, expression levels of genes associated with reproduction, and population growth in c. lividipennis were investigated. | 2017 | 28058798 |
| the tiered-evaluation of the effects of transgenic cry1c rice on cyrtorhinus lividipennis, a main predator of nilaparvata lugens. | t1c-19, a newly developed transgenic cry1c rice line, expresses cry1c under the control of the maize ubiquitin promoter, and is highly resistant to lepidopteran pests of rice. cyrtorhinus lividipennis is the major predator of the eggs and young nymphs of nilaparvata lugens, which is the main non-target sap-sucking insect pest of bt rice. c. lividipennis may be exposed to cry1c protein, thus biosafety evaluations of transgenic cry1c rice on c. lividipennis should be conducted before the commercia ... | 2017 | 28205641 |
| identification of candidate odorant-binding protein and chemosensory protein genes in cyrtorhinus lividipennis (hemiptera: miridae), a key predator of the rice planthoppers in asia. | cyrtorhinus lividipennis reuter (hemiptera: miridae) is an important predatory natural enemy of planthopper and leafhopper eggs in asian rice paddy fields. cyrtorhinus lividipennis is known to rely largely on herbivore-induced plant volatiles to identify eggs embedded in rice stem tissues for feeding and on pheromones for mating. however, exactly how c. lividipennis decode these chemical information is unclear. in most insects, the odorant-binding proteins (obps) and the chemosensory proteins (c ... | 2017 | 28407047 |
| risk assessment of insecticides used in rice on miridbug, cyrtorhinus lividipennis reuter, the important predator of brown planthopper, nilaparvata lugens (stal.). | the green miridbug, cyrtorhinus lividipennis, an important natural enemy of the rice brown planthopper (bph), nilaparvata lugens plays a major role as a predator in suppressing the pest population. the study assessed the impact of certain potential insecticides used in the rice ecosystem on the miridbug predator and brown planthopper through contact toxicity. eleven insecticides, including neonicotinoids, diamides, azomethine pyridines, carbamates, pyrethroids, organophosphates and cyclodienes w ... | 2010 | 20537680 |
| early season natural control of the brown planthopper, nilaparvata lugens: the contribution and interaction of two spider species and a predatory bug. | nilaparvata lugens stål, the brown planthopper (bph), is a major pest in rice. the lycosid pardosa pseudoannulata (bösenberg & strand) and the linyphiid atypena formosana (oi) are the early dominant predators in irrigated rice. later, predatory bugs, including the mirid cyrtorhinus lividipennis reuter, become dominant. in unsprayed rice, bph numbers normally remain low. while p. pseudoannulata is known to be a key natural enemy of bph, the contribution to bph reduction by the smaller a. formosan ... | 2007 | 17916271 |