scholarly journals Across-stage consequences of thermal stress have trait-specific effects and limited fitness costs in the harlequin ladybird, Harmonia axyridis

2020 ◽  
Vol 34 (4) ◽  
pp. 555-572
Author(s):  
Rebecca Shinner ◽  
John S. Terblanche ◽  
Susana Clusella-Trullas
Keyword(s):  
Thermal Stress ◽  
Harmonia Axyridis ◽  
Fitness Costs ◽  
Harlequin Ladybird ◽  
Specific Effects

scholarly journals Transgenerational Effects of a Neonicotinoid and a Novel Sulfoximine Insecticide on the Harlequin Ladybird

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 681
Author(s):  
Changchun Dai ◽  
Michele Ricupero ◽  
Zequn Wang ◽  
Nicolas Desneux ◽  
Antonio Biondi ◽  
...  
Keyword(s):  
Nicotinic Acetylcholine Receptors ◽  
Harmonia Axyridis ◽  
Biocontrol Agent ◽  
Insect Pests ◽  
Negative Influence ◽  
Management Approach ◽  
Generalist Predator ◽  
Cotton Aphid ◽  
Transgenerational Effects ◽  
Harlequin Ladybird

The harlequin ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae), is a generalist predator and an effective biocontrol agent of various insect pests that has been exploited for the control of aphid pests in the greenhouse and field. However, insecticides are widely used to control aphid pests worldwide and the potential non-target effects of sulfoxaflor and imidacloprid for controlling aphid pests towards this biocontrol agent are little known. Although both sulfoxaflor and imidacloprid act on nicotinic acetylcholine receptors of insects, sulfoxaflor has a novel chemical structure compared with neonicotinoids. We assessed the lethal, sublethal and transgenerational effects of sulfoxaflor and imidacloprid on H. axyridis simultaneously exposed via ingestion of contaminated prey and via residual contact on the host plant at LC20 and LC50 doses estimated for the cotton aphid. Imidacloprid significantly reduced the survival of H. axyridis adults compared to sulfoxaflor at the same lethal concentration against cotton aphid. Both concentrations of imidacloprid and sulfoxaflor reduced the proportion of ovipositing females, and both concentrations of imidacloprid and sulfoxaflor, except LC20 dose of sulfoxaflor, reduced the fecundity and fertility of the parental generation. In the progeny of imidacloprid- and sulfoxaflor-exposed parents, both tested LC50 concentrations significantly decreased the juvenile survival rate, and both concentrations of imidacloprid and sulfoxaflor, except LC20 dose of sulfoxaflor, prolonged the development time. Our findings provide evidence of the negative influence of imidacloprid and sulfoxaflor at low lethal concentrations on the harlequin ladybird and on the progeny of exposed individuals, i.e., transgenerational effects. Hence, these findings stress the importance of optimizing the applications of imidacloprid and sulfoxaflor for the control of aphid pests, aiming at preserving the biocontrol services provided by H. axyridis throughout the integrated pest management approach.

Prevalence of maternally-inherited bacteria in native and invasive populations of the harlequin ladybird beetle Harmonia axyridis

2021 ◽  
Author(s):  
Hongran Li ◽  
Xiaohan Shu ◽  
Ling Meng ◽  
Xuguo Zhou ◽  
John J. Obrycki ◽  
...  
Keyword(s):  
Harmonia Axyridis ◽  
Ladybird Beetle ◽  
Harlequin Ladybird

scholarly journals Invasion history of Harmonia axyridis (Pallas, 1773) (Coleoptera: Coccinellidae) in Ecuador

2020 ◽  
Author(s):  
Diego F. Cisneros-Heredia ◽  
Emilia Peñaherrera-Romero
Keyword(s):  
Biological Control ◽  
Harmonia Axyridis ◽  
Economic Impacts ◽  
Invasion History ◽  
Museum Specimens ◽  
Agricultural Pest ◽  
Harlequin Ladybird ◽  
The World ◽  
History Of ◽  
Harmonia Axyridis Pallas

AbstractHarmonia axyridis is a ladybird extensively used around the world for biological control of agricultural pest. However, it has become invasive in several countries, producing negative ecological and socio-economic impacts. Herein, we review the invasion history of the Harlequin Ladybird Harmonia axyridis (Pallas, 1773) in Ecuador. Although first reported in Ecuador in 2012, museum specimens date back to 2004 and it is currently established across the country, especially along the Andean region. Due to its invasive nature, further studies are urgently needed to evaluate possible impacts of H. axyridis on the Ecuadorian biodiversity and agroindustry.

scholarly journals Citizen science reveals the distribution of the invasive harlequin ladybird (Harmonia axyridis Pallas) in Argentina

2020 ◽  
Vol 22 (10) ◽  
pp. 2915-2921
Author(s):  
Victoria Werenkraut ◽  
Florencia Baudino ◽  
Helen E. Roy
Keyword(s):  
Citizen Science ◽  
Harmonia Axyridis ◽  
Harlequin Ladybird ◽  
Harmonia Axyridis Pallas

scholarly journals Harmonine, a defence compound from the harlequin ladybird, inhibits mycobacterial growth and demonstrates multi-stage antimalarial activity

2011 ◽  
Vol 8 (2) ◽  
pp. 308-311 ◽  
Author(s):  
Christian Rene Röhrich ◽  
Che Julius Ngwa ◽  
Jochen Wiesner ◽  
Henrike Schmidtberg ◽  
Thomas Degenkolb ◽  
...  
Keyword(s):  
Harmonia Axyridis ◽  
Antimalarial Activity ◽  
Biological Control Agent ◽  
Control Agent ◽  
Human Pathogens ◽  
Harlequin Ladybird ◽  
Multi Stage ◽  
Blocking Activity ◽  
Mycobacterial Growth ◽  
Gametocytocidal Activity

The harlequin ladybird beetle Harmonia axyridis has been introduced in many countries as a biological control agent, but has become an invasive species threatening the biodiversity of native ladybirds. Its invasive success has been attributed to its vigorous resistance against diverse pathogens. This study demonstrates that harmonine ((17 R ,9 Z )-1,17-diaminooctadec-9-ene), which is present in H. axyridis haemolymph, displays broad-spectrum antimicrobial activity that includes human pathogens. Antibacterial activity is most pronounced against fast-growing mycobacteria and Mycobacterium tuberculosis , and the growth of both chloroquine-sensitive and -resistant Plasmodium falciparum strains is inhibited. Harmonine displays gametocytocidal activity, and inhibits the exflagellation of microgametocytes and zygote formation. In an Anopheles stephensi mosquito feeding model, harmonine displays transmission-blocking activity.

scholarly journals Increase in Male Reproductive Success and Female Reproductive Investment in Invasive Populations of the Harlequin Ladybird Harmonia axyridis

PLoS ONE ◽  
2013 ◽  
Vol 8 (10) ◽  
pp. e77083 ◽  
Author(s):  
Guillaume J. M. Laugier ◽  
Gilles Le Moguédec ◽  
Ashraf Tayeh ◽  
Anne Loiseau ◽  
Naoya Osawa ◽  
...  
Keyword(s):  
Reproductive Success ◽  
Harmonia Axyridis ◽  
Reproductive Investment ◽  
Male Reproductive Success ◽  
Harlequin Ladybird
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