Results 21 to 30 of about 344 (148)

Geographic variation in evolutionary rescue under climate change in a crop pest-predator system. [PDF]

open access: yesEvol Appl
Abstract Species distribution models (SDMs) are often built upon the “niche conservatism” assumption, such that they ignore the possibility of “evolutionary rescue” and may underestimate species' future range limits under climate change. We select aphids and ladybirds as model species and develop an eco‐evolutionary model to explore evolutionary rescue
Ge X, Newman JA, Griswold CK.
europepmc   +2 more sources

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

open access: yesInsects
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   +5 more
doaj   +2 more sources

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

open access: yesEuropean 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,
Natalia A. BELYAKOVA, Sergey Ya. REZNIK
doaj   +2 more sources

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

open access: yesBMC 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   +7 more
europepmc   +8 more sources

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

open access: yesEcotoxicology 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   +7 more
doaj   +1 more source

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

open access: yesActa 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   +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]

open access: yesPesticidi 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   +5 more
doaj   +1 more source

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

open access: yesScience, 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.   +2 more
  +10 more sources

The interaction of <i>Serratia</i> bacteria and harmonine in harlequin ladybird confers an interspecies competitive edge. [PDF]

open access: yesProc Natl Acad Sci U S A
The harlequin ladybird, Harmonia axyridis , is a predatory beetle used globally to control pests such as aphids and scale insects. Originating from East Asia, this species has become highly invasive since its introduction in the late 19th century to Europe and North America, posing a threat ...
Zhang C   +11 more
europepmc   +3 more sources

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