Results 81 to 90 of about 7,822 (215)

Droplet Deposition and Control of Planthoppers of Different Nozzles in Two-Stage Rice with a Quadrotor Unmanned Aerial Vehicle

open access: yesAgronomy, 2020
Previous studies have confirmed that choosing nozzles that produce coarser droplets could reduce the risk of pesticide spray drift, but this conclusion is based on a large volume of application, and it is easy to ignore how this impacts the control ...
Pengchao Chen   +7 more
doaj   +1 more source

Genetic Basis of Cuticular Hydrocarbon Variation in the Desert Ant Cataglyphis niger

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
Cuticular hydrocarbons (CHCs) are a ubiquitous component of ant cuticles that are used for a wide range of chemical signaling functions, especially recognition. Here we tested for a genetic basis of CHC variation in the desert ant Cataglyphis niger. We applied a genomic mapping approach to discover associations between CHCs and 20 quantitative trait ...
Shani Inbar   +6 more
wiley   +1 more source

Reference gene selection for gene expression studies using RT-qPCR in virus-infected planthoppers

open access: yesVirology Journal, 2011
Background Planthoppers not only severely affect crops by causing mechanical damage when feeding but are also vectors of several plant virus species. The analysis of gene expression in persistently infected planthoppers might unveil the molecular basis ...
del Vas Mariana   +4 more
doaj   +1 more source

A Mechanosensory Receptor TMC Regulates Ovary Development in the Brown Planthopper Nilaparvata lugens

open access: yesFrontiers in Genetics, 2020
Transmembrane channel-like (TMC) genes encode a family of evolutionarily conserved membrane proteins. Mutations in the TMC1 and TMC2 cause deafness in humans and mice. However, their functions in insects are is still not well known.
Ya-Long Jia   +6 more
doaj   +1 more source

Impact of Multiple Insect-Pest Incidence on Yield in Basmati Rice [PDF]

open access: yes, 2015
The experiments for determining the multiple insect-pest incidence on yield loss in basmati rice was conducted for two crop seasons. Five treatments were, viz.
Sarao, P.S., Shera, P.S., Singh, P.
core   +1 more source

An RNA interference biopesticide reduces reproduction of the honey bee parasite Varroa destructor by down‐regulating embryo development pathways

open access: yesPest Management Science, Volume 82, Issue 3, Page 2694-2707, March 2026.
Varroa destructor mites exposed to dsRNA specific in sequence to a V. destructor calmodulin gene significantly effected gene expression of adult female mites sampled 5 days after entering a honey bee brood cell to reproduce. Significantly down‐regulated genes included Calmodulin and were associated with calcium ion binding and embryo developmental ...
Zoe E Smeele   +10 more
wiley   +1 more source

Application of multivariate analysis to electrical penetration graphs using manual and automate waveform recognization from the planthopper Peregrinus maidis feeding on susceptible and resistant maize [PDF]

open access: yes, 2004
The stylet penetration activities of Peregrinus maidis (Ashmead) (Homoptera: Delphacidae), vector of Maize mosaic virus (MMV) and Maize stripe virus (MStV) were studied by electrical penetration graphs (DC-EPG) on resistant and susceptible maize inbred ...
Buduca, Cécile   +5 more
core  

Carboniferous fossils enlighten the systematics and evolution of Hemiptera

open access: yesPapers in Palaeontology, Volume 12, Issue 2, March/April 2026.
Abstract Fossils are witnesses to the evolutionary processes undergone by living lineages. The earliest occurrence of clades provides rich insights into the timing of diversification of lineages and better delimits the groups that compose them. Hemiptera are a remarkable order within the insects due to their high morphological and ecological diversity.
Mathieu Boderau   +8 more
wiley   +1 more source

‘Candidatus Phytoplasma solani’: From infection to all‐round characterisation of distinct tuf‐type strains with different virulence in tomato plants

open access: yesAnnals of Applied Biology, Volume 188, Issue 2, Page 480-494, March 2026.
‘Candidatus Phytoplasma (Ca. P.) solani’ is associated with bois noir (BN) of grapevine and stolbur of solanaceous plants and is primarily transmitted by Hyalesthes obsoletus Signoret. Four tuf‐a and five tuf‐b1 ‘Ca. P. solani’ strains were transmitted to tomato plants (cv. Micro‐Tom) by using bait‐plants and by capturing H.
Gaia Carminati   +7 more
wiley   +1 more source

A new Anagrus (Hymenoptera: Mymaridae) from Argentina, an egg parasitoid of Delphacodes sitarea (Hemiptera: Archaeorrhyncha: Delphacidae) [PDF]

open access: yes, 2004
A new species of the mymarid wasp genus Anagrus Haliday is described from the Province of Tucumán, Argentina. The type series of A. Anagrus miriamae, S. Triapitsyn and Virla sp. nov.
Triapitsyn, Serguei   +1 more
core  

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