Results 11 to 20 of about 341 (147)

Evolution in biocontrol strains: insight from the harlequin ladybird Harmonia axyridis. [PDF]

Evol Appl, 2012
AbstractAfter being used as a biocontrol agent against aphids for decades without harmful consequences, the Asian harlequin ladybird Harmonia axyridis has suddenly become an invasive pest on a worldwide scale. We investigate the impact of captive breeding on several traits of this ladybird such as genetic diversity, fecundity, survival and pathogen ...
Tayeh A, Estoup A, Laugier G, Loiseau A, Turgeon J, Toepfer S, Facon B.   +6 more
europepmc   +9 more sources

Behavioral and Immunological Features Promoting the Invasive Performance of the Harlequin Ladybird Harmonia axyridis [PDF]

Frontiers in Ecology and Evolution, 2017
The harlequin ladybird Harmonia axyridis is now established as a model to test hypotheses explaining why some species become successfully invasive, while others, even closely related ones, do not. In this review, we evaluate behavioral and immunological features that may play a role in the invasive performance of this model species.
François J. Verheggen, Heiko Vogel, Andreas Vilcinskas, Andreas Vilcinskas   +3 more
openaire   +4 more sources

Cold tolerance of the harlequin ladybird Harmonia axyridis in Europe

Journal of Insect Physiology, 2010
As an essential aspect of its invasive character in Europe, this study examined the cold hardiness of the harlequin ladybird Harmonia axyridis. This was done for field-collected populations in Belgium overwintering either in an unheated indoor or an outdoor hibernaculum. The supercooling point, lower lethal temperature and lower lethal time at 0 and -5
Berkvens, N., Bale, J. S., Berkvens, D., Tirry, L., De Clercq, P.   +4 more
openaire   +6 more sources

First record of the harlequin ladybird, Harmonia axyridis (Coleoptera: Coccinellidae) in the Caucasus [PDF]

European Journal of Entomology, 2013
This is the first record of the harlequin ladybird Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) occurring in the Caucasus (Sochi region of Krasnodar territory, Russia). All the adults collected in the field there and reared from collected eggs, larvae and pupae, and their progeny were H. axyridis f. succinea, which is the most common morph in
Natalia A. BELYAKOVA, Sergey Ya. REZNIK
openaire   +3 more sources

From effective biocontrol agent to successful invader: the harlequin ladybird (Harmonia axyridis) as an example of good ideas that could go wrong. [PDF]

PeerJ, 2017
The use of biological control agents to control pests is an alternative to pesticides and a tool to manage invasive alien species. However, biocontrol agents can themselves become invasive species under certain conditions.
Camacho-Cervantes M, Ortega-Iturriaga A, Del-Val E.   +2 more
europepmc   +3 more sources

Antennal Transcriptome Analysis and Identification of Candidate Chemosensory Genes of the Harlequin Ladybird Beetle, Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae). [PDF]

Insects, 2021
In predatory ladybirds (Coleoptera: Coccinellidae), antennae are important for chemosensory reception used during food and mate location, and for finding a suitable oviposition habitat.
Rondoni G, Roman A, Meslin C, Montagné N, Conti E, Jacquin-Joly E.   +5 more
europepmc   +2 more sources

A database of traits for the ladybird species of the United Kingdom. [PDF]

Sci Data
Trait-based approaches have become common in ecological research as they can contribute to an understanding of ecosystem functioning and how species, communities and systems may respond to environmental change.
Outhwaite CL, Cocker L, Comont RF, White HJ, Powney GD, Turvey K, Roy HE, Brown PMJ.   +7 more
europepmc   +2 more sources

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

Ecol Evol
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 ...
Nattier R, Hévin NM, Chifflet-Belle P, Dong J, Escalona HE, Haran JM, Streito JC, Tomaszewska W, Slipiński A, Zwick A, Kergoat GJ.   +10 more
europepmc   +2 more sources

Effect of a Marking Pheromone and Population Density on Ladybird Larval Development and Adult Body Mass. [PDF]

Insects
Females of predaceous ladybirds use sensing chemicals in larval tracks as an oviposition-deterring pheromone to avoid cannibalism of eggs. We hypothesized that larvae would also respond to the presence of conspecific tracks by slowing their developmental
Fernandez L, Nedvěd O.
europepmc   +2 more sources

Treating green pea aphids, Myzus persicae, with azadirachtin affects the predatory ability and protective enzyme activity of harlequin ladybirds, Harmonia axyridis

Ecotoxicology and Environmental Safety, 2021
As a natural enemy of green peach aphids, harlequin ladybirds, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), are also indirectly affected by azadirachtin.
Deqiang Qin, Benju Liu, Peiwen Zhang, Qun Zheng, Peiru Luo, Cuiyi Ye, Weihua Zhao, Zhixiang Zhang   +7 more
doaj   +1 more source