scholarly journals Spread of a model invasive alien species, the harlequin ladybird Harmonia axyridis in Britain and Ireland

2018 ◽  
Vol 5 (1) ◽  
Author(s):  
P. M. J. Brown ◽  
D. B. Roy ◽  
C. Harrower ◽  
H. J. Dean ◽  
S. L. Rorke ◽  
...  
Keyword(s):  
Alien Species ◽  
Harmonia Axyridis ◽  
Invasive Alien Species ◽  
Harlequin Ladybird

scholarly journals Modeling spatial expansion of invasive alien species: relative contributions of environmental and anthropogenic factors to the spreading of the harlequin ladybird in France

Ecography ◽  
2015 ◽  
Vol 39 (7) ◽  
pp. 665-675 ◽  
Author(s):  
Sophie Veran ◽  
Sylvain Piry ◽  
Vincent Ternois ◽  
Christine N. Meynard ◽  
Benoit Facon ◽  
...  
Keyword(s):  
Alien Species ◽  
Invasive Alien Species ◽  
Anthropogenic Factors ◽  
Spatial Expansion ◽  
Harlequin Ladybird

scholarly journals PREVALENCE AND DISTRIBUTION OF DIFFERENT NATURAL ENEMIES IN THE HARLEQUIN LADYBIRD HARMONIA AXYRIDIS (COLEOPTERA COCCINELLIDAE)

Redia ◽  
2021 ◽  
Vol 104 ◽  
pp. 125-137
Author(s):  
LUCA ESZTER BALOG ◽  
OLEKSANDR HOLOVACHOV ◽  
JÚLIA KATALIN TÖRÖK
Keyword(s):  
Natural Enemies ◽  
Harmonia Axyridis ◽  
Parasitic Nematode ◽  
Invasive Alien Species ◽  
Economic Loss ◽  
Harlequin Ladybird ◽  
Dinocampus Coccinellae ◽  
Impact On Biodiversity ◽  
First Time ◽  
Spearman’S Correlation

The harlequin ladybird Harmonia axyridis (Coleoptera: Coccinellidae) is one of the most common invasive alien species in the world, which has a global impact on biodiversity and agriculture, and causes economic loss and harm to humans. This insect can be infected by different natural enemies, but their interactions remain understudied. In the present study, 581 adult Ha. axyridis specimens were collected from 21 localities in Hungary with the help of citizen scientists and examined for natural enemies. The parasitic nematode Parasitylenchus bifurcatus (Nematoda: Allantonematidae) is reported in Hungary on the harlequin ladybird for the first time. The ladybirds were also infected by the ectoparasitic fungus Hesperomyces virescens (Ascomycota: Laboulbeniales) and parasitoid Dinocampus coccinellae (Hymenoptera: Braconidae). The nematode parasite was present in all localities where Hesperomyces-infected ladybirds appeared. The prevalence of recorded natural enemies varied by locality: for P. bifurcatus it ranged from 1% to 8%; for He. virescens from 2% to 36%; and for the parasitoid it was 4%. Besides, a statistically significant positive correlation was shown between the nematode and the fungus co-infection using Spearman’s correlation. A study on the multiparasitism of harlequin ladybirds was not yet performed in Hungary. The study area is located between two distant areas in Europe where co-infections had already been observed, indicating that this is probably not a sporadic phenomenon, but that parasitism of the harlequin ladybird by multiple natural enemies might be prevalent throughout the area.

scholarly journals LEPTOGLOSSUS OCCIDENTALIS (HETEROPTERA: COREIDAE) AND HARMONIA AXYRIDIS (COLEOPTERA: COCCINELLIDAE), TWO NEW INVASIVE ALIEN SPECIES FOR INSECT FAUNA OF MACEDONIA

2016 ◽  
Vol 5 ◽  
pp. 22-25
Author(s):  
Dejan Kulijer
Keyword(s):  
Alien Species ◽  
Harmonia Axyridis ◽  
Invasive Alien Species ◽  
Insect Fauna ◽  
Leptoglossus Occidentalis

In this paper Leptoglossus occidentalis (Heteroptera: Coreidae) and Harmonia axyridis (Coleoptera: Coccinellidae), two new invasive alien species are reported for insect fauna of Macedonia.

Invasive alien species under attack: natural enemies of Harmonia axyridis in the Netherlands

BioControl ◽  
2014 ◽  
Vol 59 (2) ◽  
pp. 229-240 ◽  
Author(s):  
C. L. Raak-van den Berg ◽  
Paul S. van Wielink ◽  
Peter W. de Jong ◽  
Gerrit Gort ◽  
Danny Haelewaters ◽  
...  
Keyword(s):  
The Netherlands ◽  
Alien Species ◽  
Natural Enemies ◽  
Harmonia Axyridis ◽  
Invasive Alien Species

scholarly journals Introduction and Spread of the Invasive Alien Species Ageratina altissima in a Disturbed Forest Ecosystem

2021 ◽  
Vol 13 (11) ◽  
pp. 6152
Author(s):  
Eunyoung Kim ◽  
Jaeyong Choi ◽  
Wonkyong Song
Keyword(s):  
Land Use ◽  
South Korea ◽  
Alien Species ◽  
Invasive Alien Species ◽  
Management Policy ◽  
Economic Damage ◽  
Forest Edges ◽  
Forest Interior ◽  
Lower Elevation ◽  
Canopy Area

Invasive alien species (IAS) not only displace nearby indigenous plants and lead to habitat simplification but also cause severe economic damage by invading arable lands. IAS invasion processes involve external forces such as species characteristics, IAS assemblage traits, environmental conditions, and inter-species interactions. In this study, we analyzed the invasion processes associated with the introduction and spread of Ageratina altissima, a representative invasive plant species in South Korea. We investigated 197 vegetation quadrats (2 × 20 m) in regions bordering 47 forests in southern Seoul and Gyeonggi-do, South Korea. A total of 23 environmental variables were considered, which encompassed vegetation, topography, land use, and landscape ecology indices. The model was divided into an edge and an interior model and analyzed using logistic regression and a decision tree (DT) model. The occurrence of Ageratina altissima was confirmed in 61 sites out of a total of 197. According to our analysis, Ageratina altissima easily invaded forest edges with low density. The likelihood of its occurrence increased with lower elevation and gentler slope. In contrast, the spread of Ageratina altissima in the forest interior, especially based on seed spread and permeability, was favored by a lower elevation and gentler slopes. The analysis of Ageratina altissima settlement processes in forest edges coupled with the DT model demonstrated that land characteristics, such as the proximity to urbanized areas and the number of shrub and tree species, play a pivotal role in IAS settlement. In the forest interior, Ageratina altissima did not occur in 68 of the 71 sites where the soil drainage was under 2.5%, and it was confirmed that the tree canopy area had a significant impact on forest spread. Based on these results, it can be assumed that Ageratina altissima has spread in South Korean forests in much the same way as other naturalized species. Therefore, vegetation management strategies for naturalized species should be developed in parallel with land use management policy in regions surrounding forest edges to successfully manage and control Ageratina altissima invasion.

scholarly journals InvasionDB: A genome and gene database of invasive alien species

2021 ◽  
Vol 20 (1) ◽  
pp. 191-200
Author(s):  
Cong HUANG ◽  
Kun LANG ◽  
Wan-qiang QIAN ◽  
Shu-ping WANG ◽  
Xiao-mei CAO ◽  
...  
Keyword(s):  
Alien Species ◽  
Invasive Alien Species ◽  
A Genome ◽  
Gene Database
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