Results 21 to 30 of about 4,977 (180)

Stage specific consumption and utilization of aphids, conspecific and heterospecific eggs by two species of Coccinella (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2014
The nutritive quality of aphids, conspecific and heterospecific eggs as food for ladybirds is a controversial issue. If ladybirds find aphids more palatable than eggs then they are more likely to efficiently exploit and be biocontrol agents of aphids. If
Bhupendra KUMAR   +3 more
doaj   +1 more source

Effect of Ingestion Exposure of Selected Insecticides on Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae)

open access: yesInsects, 2021
The sensitivity to thiacloprid and lambda-cyhalothrin ingested from prey organisms was studied in Coccinella septempunctata and Harmonia axyridis, since the effect of ingestion exposure to these insecticides is unknown in these species. All developmental
Jacek Piotr Twardowski   +2 more
doaj   +1 more source

First report of nematodes Parasitylenchus bifurcatus Poinar & Steenberg, 2012 parasitizing multicolored Asian lady beetle Harmonia axyridis (Pallas, 1773) in Slovenia

open access: yesActa Agriculturae Slovenica, 2017
In years 2015 and 2016 around 200 specimens of ladybird species Harmonia axyridis were collected in Slovenia. Ladybirds were dissected and checked under stereomicroscope for presence of nematodes.
Barbara Gerič Stare   +2 more
doaj   +1 more source

Warm Mesoclimate Advances the Seasonal Dynamics of Harmonia axyridis in Urban Habitats

open access: yesFrontiers in Ecology and Evolution, 2021
In 2016–2019, seasonal changes in the abundance of the harlequin ladybird Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae) were established in the city center of Prague, Central Europe, and in its outskirts.
Alois Honek   +5 more
doaj   +1 more source

Defence, oviposition and sex: semiochemical parsimony in two species of ladybird beetles (Coleoptera, Coccinellidae)? A short review.

open access: yesEuropean Journal of Entomology, 2000
Certain alkanes or their mixture present on the surface of ladybird elytra is important in the recognition of potential mates. Similar chemicals are present in the tracks of larvae, which deter conspecific female ladybirds from laying eggs in aphid ...
Jean-Louis HEMPTINNE, Anthony F.G. DIXON
doaj   +1 more source

Conspicuousness and toxicity of Coccinellidae: An aposematic review [PDF]

open access: yesArthropods, 2020
Coccinellids (commonly known as ladybirds) mostly exhibit bright clouration and play a vital role in biological control of pests of important crops such as aphids and scale insects.
Muhammad Aslam
doaj  

Diet and chemical defence in ladybird beetles (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2022
In this paper, I review the effects of the diet of ladybirds on chemical defence in this group of beetles. The tendency to reflex bleed and the diversity of autogenously produced alkaloids in different taxa may be evolutionarily related to diet and the ...
John J. SLOGGETT
doaj   +1 more source

Signal honesty and predation risk among a closely related group of aposematic species. [PDF]

open access: yes, 2015
This is the final version of the article. It first appeared from NPG via http://dx.doi.org/10.1038/srep11021Many animals have bright colours to warn predators that they have defences and are not worth attacking.
María Arenas, Lina   +2 more
core   +2 more sources

Cine y derechos de la infancia: Ladybird, ladybird

open access: yesCuadernos Electrónicos de Filosofía del Derecho, 2023
Con este análisis de la película Ladybird, ladybird, del director británico Ken Loach, se busca rendir un homenaje a la extensa y reconocida trayectoria académica del profesor Javier de Lucas Martín, entre cuyas líneas de investigación y docencia se encuentra la de “Cine y Derecho”.
openaire   +5 more sources

Why is Coccinella septempunctata so successful? (A point-of-view)

open access: yesEuropean Journal of Entomology, 2008
Factors were examined that could be responsible for the predominance of Coccinella septempunctata (C7) in most habitats of the Palaearctic and for its successful invasion of the Nearctic Region.
Ivo HODEK, J.P. MICHAUD
doaj   +1 more source

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