Results 21 to 30 of about 1,379 (188)

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

The Genomic Basis of Color Pattern Polymorphism in the Harlequin Ladybird. [PDF]

Curr Biol, 2018
Many animal species are comprised of discrete phenotypic forms. Understanding the genetic mechanisms generating and maintaining such phenotypic variation within species is essential to comprehending morphological diversity. A common and conspicuous example of discrete phenotypic variation in natural populations of insects is the occurrence of different
Gautier M, Yamaguchi J, Foucaud J, Loiseau A, Ausset A, Facon B, Gschloessl B, Lagnel J, Loire E, Parrinello H, Severac D, Lopez-Roques C, Donnadieu C, Manno M, Berges H, Gharbi K, Lawson-Handley L, Zang LS, Vogel H, Estoup A, Prud'homme B.   +20 more
europepmc   +9 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

Comment on “Invasive Harlequin Ladybird Carries Biological Weapons Against Native Competitors” [PDF]

Science, 2013
We comment on the implications that Vilcinskas et al . (Reports, 17 May 2013, p. 862) attach to the finding that the exotic, invasive ladybird Harmonia axyridis carries microsporidia to which this species is insensitive but that is lethal to species that are native to the invaded areas.
de Jong, P.W., van Lenteren, J.C., Raak-van den Berg, C.L.   +2 more
  +10 more sources

Understanding the threats posed by non-native species: public vs. conservation managers. [PDF]

, 2013
Public perception is a key factor influencing current conservation policy. Therefore, it is important to determine the influence of the public, end-users and scientists on the prioritisation of conservation issues and the direct implications for policy ...
A Bremner, AD Middleton, AT Knight, C MacNeil, Carlos Garcia de Leaniz, CJ Loucks, D Andreou, D Andreou, D Andreou, D Andreou, D Burnard, Dean Burnard, Demetra Andreou, F Gherardi, GH Copp, GH Copp, GL Harvey, J Turgeon, J. Robert Britton, JLC Stinchcombe, JP Bailey, JR Britton, M Majerus, MJ Novacek, PJ Seddon, RE Gozlan, RE Gozlan, RE Gozlan, RE Gozlan, RE Gozlan, RK Paley, Rodolphe E. Gozlan, RZ Guan, S Bertolino, SJ Manchester, SK Jacobson, TB Lauber, TH Tear, VM Stankovic, WL Linklater   +39 more
core   +17 more sources

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   +7 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

Harmonine, a defence compound from the harlequin ladybird, inhibits mycobacterial growth and demonstrates multi-stage antimalarial activity. [PDF]

Biol Lett, 2012
Röhrich CR, Ngwa CJ, Wiesner J, Schmidtberg H, Degenkolb T, Kollewe C, Fischer R, Pradel G, Vilcinskas A.   +8 more
europepmc   +2 more sources

Assessment of the Harlequin Ladybird's (Harmonia Axyridis) Resistance to the Most Commonly Used Active Substances in Insecticides

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2021
The objective of this study was to find out if useful insects - in this case, harlequin ladybirds (Harmonia axyridis) - are affected by plant protection products (PPP) to the same extent as pests and if this species shows any levels of resistance to ...
Aneta Nečasová, Eva Hrudová, Marek Seidenglanz, Radovan Pokorný   +3 more
doaj   +1 more source

Harmonia axyridis (Coleoptera: Coccinellidae) in Serbia: Its presence on aphid-infested plants and co-occurrence with native aphidophagous coccinellids [PDF]

Pesticidi i Fitomedicina, 2020
The presence of the invasive coccinellid Harmonia axyridis in aphid colonies on plants, as well as its co-occurrence with native coccinellid predators was studied in the period 2011-2020.
Jovičić Ivana, Radonjić Anđa, Kljajić Petar, Andrić Goran, Pražić-Golić Marijana, Petrović-Obradović Olivera   +5 more
doaj   +1 more source