Results 31 to 40 of about 341 (147)

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

Evol 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

Parasitylenchus bifurcatus n. sp. (Tylenchida: Allantonematidae) parasitizing Harmonia axyridis (Coleoptera: Coccinellidae)

Parasites & Vectors, 2012
Background The harlequin ladybird, Harmonia axyridis Pallas (Coleoptera: Coccinellidae) is native to central and eastern Asia and was purposely introduced into Europe to control aphids.
Poinar George O, Steenberg Tove
doaj   +1 more source

Effects of Fluctuating Thermal Regimes and Pesticides on Egg Hatching of a Natural Enemy Harmonia axyridis (Coleoptera Coccinellidae)

Agronomy, 2023
The harlequin ladybird, Harmonia axyridis, is a valuable asset in integrated pest management (IPM); however, issues related to low-temperature storage and transportation have resulted in low hatching rate, while the use of pesticides may lead to non ...
Jingya Yu, Chong Li, Likun Dong, Runping Mao, Zhihua Wang, Zhangxin Pei, Letian Xu   +6 more
doaj   +1 more source

Hybrid feature extractor for harlequin ladybird identification using color images [PDF]

2012 IEEE Symposium on Computational Intelligence in Bioinformatics and Computational Biology (CIBCB), 2012
This paper describes research into the automation of the identification of harlequin and other ladybird species using color images. The automation process involves image processing and the use of an artificial neural network as a classifier. The ultimate aim is to reduce the number of color images to be examined by an expert by pre-sorting the images ...
Ayob, Mohd Zaki Bin, Chesmore, David
openaire   +2 more sources

Repeated inversions within a pannier intron drive diversification of intraspecific colour patterns of ladybird beetles

Nature Communications, 2018
The harlequin ladybird beetle, Harmonia axyridis, has remarkable phenotypic diversity, with over 200 colour patterns. Here, Ando et al. show that this patterning is regulated by the transcription factor gene pannier and has diversified by repeated ...
Toshiya Ando, Takeshi Matsuda, Kumiko Goto, Kimiko Hara, Akinori Ito, Junya Hirata, Joichiro Yatomi, Rei Kajitani, Miki Okuno, Katsushi Yamaguchi, Masaaki Kobayashi, Tomoyuki Takano, Yohei Minakuchi, Masahide Seki, Yutaka Suzuki, Kentaro Yano, Takehiko Itoh, Shuji Shigenobu, Atsushi Toyoda, Teruyuki Niimi   +19 more
doaj   +1 more source

History of the Biodiversity of Ladybirds (Coccinellidae) at the Black Sea Coast of the Russian Caucasus in the Last 120 Years—Does the Landscape Transformation and Establishment of Harmonia axyridis Have an Impact?

Insects, 2020
Studies of the history of regional insect fauna are important for understanding the changes in ecosystems. We analyzed the dynamics of ladybird fauna at the main sea resort of Russia over a period of 120 years to determine the following: (1) what species
Andrzej O. Bieńkowski, Marina J. Orlova-Bienkowskaja   +1 more
doaj   +1 more source

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

BioControl, 2017
The harlequin ladybird, Harmonia axyridis, is an important natural enemy of aphids throughout the world, but is now also considered an invasive alien species. We performed a meta-analysis of published life history data to address the question whether invading populations in Europe and North America have life history parameters that differ from native ...
Raak-van den Berg, C.L., Hemerik, Lia, van der Werf, Wopke, de Jong, Peter W., van Lenteren, Joop C.   +4 more
openaire   +2 more sources

Spiroplasma infection in Harmonia axyridis - Diversity and multiple infection. [PDF]

PLoS ONE, 2018
The heritable endosymbiotic bacterium Spiroplasma is found in the harlequin ladybird Harmonia axyridis. The proportion of beetles infected with Spiroplasma in different native H. axyridis populations varies from 2% to 49%.
Irina Goryacheva, Alla Blekhman, Boris Andrianov, Denis Romanov, Ilya Zakharov   +4 more
doaj   +1 more source

Parasitylenchus sp. (Tylenchomorpha: Allantonematidae) parasitizing field populations of Harmonia axyridis (Coleoptera: Coccinellidae)

European Journal of Entomology, 2011
Adults of the invasive harlequin ladybird, Harmonia axyridis (Coleoptera: Coccinellidae), were found to be parasitized by nematodes (Tylenchomorpha: Allantonematidae) in Denmark. The nematodes were identified as Parasitylenchus sp.
Susanne HARDING, George O. POINAR, Desislava V. DIMITROVA, Tove STEENBERG   +3 more
doaj   +1 more source

Harmonia axyridis (Coleoptera: Coccinellidae) as a host of the parasitic fungus Hesperomyces virescens (Ascomycota: Laboulbeniales, Laboulbeniaceae): A case report and short review

European Journal of Entomology, 2013
Hesperomyces virescens is an ectoparasite of some Coccinellidae, which until the mid-1990s was relatively rarely only reported from warm regions in various parts of the world. Analysis of the host and distribution data of H.
Piotr CERYNGIER, Kamila TWARDOWSKA
doaj   +1 more source