Results 61 to 70 of about 1,576 (173)

A "clean" alien species? Parasites of the invasive ladybird Harmonia axyridis (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2017
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

open access: yesMolecular Ecology, Volume 35, Issue 9, May 2026.
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

open access: yesEcotoxicology and Environmental Safety, 2020
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

Complex landscapes, complex diets: DNA metabarcoding reveals lady beetle prey richness increases with landcover diversity

open access: yesEcological Applications, Volume 36, Issue 3, April 2026.
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

Resposta funcional comparada entre Harmonia axyridis (Pallas), Cycloneda sanguinea (Linnaeus) e Hippodamia convergens Guerin Meneville (Coleoptera: Coccinellidae) alimentadas com Brevicoryne brassicae (Linnaeus) (Hemiptera: Aphididae)

open access: yesEntomoBrasilis, 2019
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

Phylogenetic Analyses of True Ladybirds (Coleoptera: Coccinellidae: Coccinellini) Reveal Directionality in Diet Evolution and Support a Boreotropical Origin of the Tribe

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
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

First finding of the parasitic fungus Hesperomyces virescens (Laboulbeniales) on native and invasive ladybirds (Coleoptera, Coccinellidae) in South Africa

open access: yesParasite, 2016
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

Effect of temperature on predation by Harmonia axyridis (Pall.) (Coleoptera: Coccinellidae) on the walnut aphids Chromaphis juglandicola Kalt. and Panaphis juglandis (Goeze)

open access: yesEgyptian Journal of Biological Pest Control, 2020
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

Evaluating the potential of RNA interference for control of striped cucumber beetle, Acalymma vittatum (Fabricius) (Coleoptera: Chrysomelidae)

open access: yesPest Management Science, Volume 82, Issue 4, Page 3591-3602, April 2026.
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

Aspectos biológicos de Harmonia axyridis alimentada com duas espécies de presas e predação intraguilda com Eriopis connexa Biological aspects of Harmonia axyridis fed on two prey species and intraguild predation with Eriopis connexa

open access: yesPesquisa Agropecuária Brasileira, 2009
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

Home - About - Disclaimer - Privacy