Results 61 to 70 of about 1,576 (173)
The multicoloured Asian ladybird Harmonia axyridis is an invasive insect that can negatively influence biodiversity and human economy in invaded areas.
Krzysztof DUDEK +3 more
doaj +1 more source
Genetic Variation in Chemical Defence Affects Protection of an Herbivorous Insect Against Predation
ABSTRACT Genetic variation contributes to intraspecific differences in the chemical defence in many insect species, yet the underlying genetic mechanisms remain poorly understood. The horseradish flea beetle, Phyllotreta armoraciae, sequesters glucosinolates from its horseradish host plant and activates them using endogenous myrosinase enzymes.
Johannes Körnig +9 more
wiley +1 more source
Responses of Harmonia axyridis (Coleoptera: Coccinellidae) to sulfoxaflor exposure
Harmonia axyridis is an important predator of several pest species and is part of many Integrated Pest Management (IPM) programs. To assess the risks of pesticide application to H. axyridis, we studied the effects of sulfoxaflor on H. axyridis larvae. At 72 h after treatment, the acute toxicity LR50 was 311.9476 g a. i.
Falin, He +6 more
openaire +2 more sources
Abstract Understanding the capacity of mobile organisms such as insects to utilize resources across different patches in a landscape can reveal strategies for their conservation. Past research suggests that higher levels of non‐crop habitat or landcover diversity in agricultural regions typically benefit generalist predators who can fortify their diets
Benjamin Iuliano, Claudio Gratton
wiley +1 more source
Resumo. O presente estudo teve como objetivos avaliar a resposta funcional dos instares larvais e adultos de três espécies de coccinelídeos predadores [Harmonia axyridis (Pallas), Cycloneda sanguinea (Linnaeus) e Hippodamia convergens Guerin Meneville ...
Julianne Milléo +3 more
doaj +1 more source
A newly generated large‐scale molecular phylogeny of true ladybirds (Coccinellini) clarifies their evolutionary relationships and supports a boreotropical origin in the Paleocene, with multiple independent southward dispersals. Ancestral diet reconstructions suggest an initial specialization on aphids, followed by expansions in host range and ...
Romain Nattier +10 more
wiley +1 more source
Hesperomyces virescens is a fungal ectoparasite (Laboulbeniales) that infects adult ladybirds. Research has recently focused on this parasite due to the discovery of its prevalence on the globally invasive harlequin ladybird Harmonia axyridis and for its
Haelewaters Danny +2 more
doaj +1 more source
Background The walnut aphid species Chromaphis juglandicola Kalt. and Panaphis juglandis (Goeze) are destructive insect pests. Harmonia axyridis (Pall.) (Coleoptera: Coccinellidae) is the main predatory insect with a wide geographical distribution.
Guizhen Gao +4 more
doaj +1 more source
SCB has a robust RNAi response to injected dsRNA, but oral RNAi is less efficient. Nucleases do not appear to be responsible for the discrepancy, suggesting other factors are involved. Abstract BACKGROUND The striped cucumber beetle (SCB) is a serious pest of cucurbit crops, causing damage both by feeding on plants and by vectoring plant diseases ...
Emine Kaplanoglu +2 more
wiley +1 more source
O objetivo deste trabalho foi determinar os aspectos biológicos de Harmonia axyridis, alimentada com duas espécies de presas, e a ocorrência de predação intraguilda com Eriopis connexa. Larvas de H.
Natália Ribeiro Pereira dos Santos +4 more
doaj +1 more source

