Results 21 to 30 of about 7,039 (159)

Increase in male reproductive success and female reproductive investment in invasive populations of the harlequin ladybird Harmonia axyridis. [PDF]

PLoS ONE, 2013
Reproductive strategy affects population dynamics and genetic parameters that can, in turn, affect evolutionary processes during the course of biological invasion.
Guillaume J M Laugier, Gilles Le Moguédec, Ashraf Tayeh, Anne Loiseau, Naoya Osawa, Arnaud Estoup, Benoît Facon   +6 more
doaj   +2 more sources

Light Intensity Modulates Locomotor Behavior and Predation in Different Color Morphs of the Harlequin Ladybird, Harmonia axyridis [PDF]

Insects
Light is a fundamental ecological cue for insects, influencing physiological rhythms and behavior. We investigated how varying light intensities affect locomotion and foraging in H. axyridis color morphs, and examined the role of visual opsins.
Xing-Xing Wang, Ya-Nan Liu, Chun-Yan Huang, Rui-Yan Li, Zhi-Wei Jiang, Chen-Yang Liu, Tong-Xian Liu, Yi Zhang   +7 more
doaj   +2 more sources

The invasion history, distribution and colour pattern forms of the harlequin ladybird beetle Harmonia axyridis (Pall.) (Coleoptera, Coccinellidae) in Slovakia, Central Europe [PDF]

ZooKeys, 2014
The harlequin ladybird beetle Harmonia axyridis (Coleoptera, Coccinellidae) has invaded and established in Slovakia. Following unintentional introduction in 2008, the spread of the alien coccinellid was very fast.
Ľubomír Panigaj, Peter Zach, Alois Honěk, Oldřich Nedvěd, Ján Kulfan, Zdenka Martinková, Diana Selyemová, Sandra Viglášová, Helen Roy   +8 more
doaj   +2 more sources

Functional and Numerical Responses of Harmonia axyridis (Coleoptera: Coccinellidae) to Rhopalosiphum nymphaeae (Hemiptera: Aphididae) and Their Potential for Biological Control [PDF]

Insects
The water lily aphid (Rhopalosiphum nymphaeae) is a highly polyphagous herbivore that causes severe damage to many terrestrial and aquatic plants, especially lotus.
Chong Li, Jingya Yu, Runping Mao, Kaili Kang, Letian Xu, Mengting Wu   +5 more
doaj   +2 more sources

Life history of the Harlequin ladybird, Harmonia axyridis; a global meta-analysis [PDF]

BioControl, 2017
Data collected en used for a meta analysis on life history data of H. axyridis. And the resulting 20 best models for each life history characteristic.
Raak-van den Berg, C.L. (Wageningen University & Research, Laboratory of Entomology) DAI=info:eu-repo/dai/nl/314503757, Werf, Dr.ir W. van der (Wageningen University & Research, Centre for Crop Systems Analysis) DAI=info:eu-repo/dai/nl/073547115, Hemerik, Dr. A. (Wageningen Univerity & Research, Mathematical and Statistical Methods - Biometris) DAI=info:eu-repo/dai/nl/083887822, Jong, Dr. P.W. de (Wageningen University & Research, Laboratory of Entomology) DAI=info:eu-repo/dai/nl/159309255, Lenteren, J.C. van (Wageningen University & Research, Laboratory of Entomology) DAI=info:eu-repo/dai/nl/072172231   +4 more
core   +3 more sources

Fifty Shades of the Harlequin Ladybird and a Sexually Transmitted Fungus. [PDF]

J Insect Sci, 2019
AbstractThe ectoparasitic fungus Hesperomyces virescens was studied on its invasive host, the harlequin ladybird Harmonia axyridis, in the Czech Republic. A primary aim was to examine the relationship between fungal infection and elytral coloration of the ladybird. Furthermore, the role of host sex and mating status of females were analyzed. Beetles (n
Fiedler L, Nedvěd O.
europepmc   +4 more sources

Cannibalism in invasive, native and biocontrol populations of the harlequin ladybird. [PDF]

BMC Evol Biol, 2014
Cannibalism is widespread in both vertebrates and invertebrates but its extent is variable between and within species. Cannibalism depends on population density and nutritional conditions, and could be beneficial during colonisation of new environments. Empirical studies are needed to determine whether this trait might facilitate invasion of a new area
Tayeh A, Estoup A, Lombaert E, Guillemaud T, Kirichenko N, Lawson-Handley L, De Clercq P, Facon B.   +7 more
europepmc   +8 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

Scientific opportunities presented by the arrival of the harlequin ladybird, Harmonia axyridis, in Britain

, 2005
The first confirmed report of the harlequin ladybird, Harmonia axyridis, in Britain was of a male melanic found in Sible Heddingham, Essex, on 19th September 2004.
Majerus, M.E.N., Roy, H.E.
core   +5 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