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Multistressor ecotoxicological study on Culex mosquitoes: from toxicity mechanisms to biotic interactions KU Leuven

Vienna Delnat
Natural populations are increasingly facing multiple stressors. Their ability to deal with interacting stressor combinations will be crucial for their local persistence. Populations of target species are typically exposed to pesticide mixtures and natural stressors, and are increasingly developing resistance to single pesticides. Nevertheless, we have poor knowledge whether natural stressors and the presence of pesticide resistance shape mixture ...

First record of the West Nile virus bridge vector Culex modestus Ficalbi (Diptera Culicidae) in Belgium, validated by DNA barcoding Instituut voor Tropische Geneeskunde

Katrien De Wolf, Ann Vanderheyden, Isra Deblauwe, Nathalie Smitz, Sophie Gombeer, Adwine Vanslembrouck, Kenny Meganck, Wouter Dekoninck, Marc de Meyer, Thierry Backeljau, et al.

A thorough knowledge of the presence and spatio-temporal distribution patterns of vector species are pivotal to assess the risk of mosquito-borne diseases in Europe. In 2018, a Culex larva was collected during routine monitoring activities to intercept exotic Aedes mosquito species in the port of Antwerp (Kallo, Belgium). The larva, collected from a pond in mid-September, was morphologically identified as Culex modestus, and this ...

Larval superiority of Culex pipiens to Aedes albopictus in a replacement series experiment: prospects for coexistence in Germany Instituut voor Tropische Geneeskunde

Ruth Müller, Timm Knautz, Simone Vollroth, Robert Berger, Aljoscha Kreß, Friederike Reuss, David Alexander Groneberg, Ulrich Kuch

BACKGROUND: The Asian tiger mosquito Aedes albopictus is an extremely invasive, globally distributed and medically important vector of various human and veterinary pathogens. In Germany, where this species was recently introduced, its establishment may become modulated by interspecific competition from autochthonous mosquito species, especially Culex pipiens (s.l.). While competitive superiority of Ae. albopictus to Cx. pipiens (s.l.) has ...

The effect of warming on pesticide toxicity is reversed between developmental stages in the mosquito Culex pipiens KU Leuven

Tam T Tran, Dinh Van Khuong, Lizanne Janssens, Robby Stoks
A better understanding of interactions between pesticides and warming is important to improve ecological risk assessment in a warming world. Current insights are almost exclusively based on studies that exposed animals simultaneously to both warming and a pesticide and focused on effects during the pesticide exposure period and within a single developmental stage. We studied two ignored aspects of the interplay between warming and pesticide ...

Evolution and phylogeography of Culex pipiens densovirus KU Leuven

Mine Altinli, Sebastian Lequime, Maxime Courcelle, Sarah Francois, Fabienne Justy, Anne-Sophie Gosselin-Grenet, Mylene Ogliastro, Mylene Weill, Mathieu Sicard
Viruses of the Parvoviridae family infect a wide range of animals including vertebrates and invertebrates. So far, our understanding of parvovirus diversity is biased towards medically or economically important viruses mainly infecting vertebrate hosts, while invertebrate infecting parvoviruses-namely densoviruses-have been largely neglected. Here, we investigated the prevalence and the evolution of the only mosquito-infecting ambidensovirus, ...

Stable distinct core eukaryotic viromes in different mosquito species from Guadeloupe, using single mosquito viral metagenomics KU Leuven

Shi Chenyan, Leen Beller, Ward Debouttel, Kwe Claude Yinda, Leen Delang, Anubis Vega-Rua, Anna-Bella Failloux, Jelle Matthijnssens
BACKGROUND: Mosquitoes are the most important invertebrate viral vectors in humans and harbor a high diversity of understudied viruses, which has been shown in many mosquito virome studies in recent years. These studies generally performed metagenomics sequencing on pools of mosquitoes, without assessment of the viral diversity in individual mosquitoes. To address this issue, we applied our optimized viral metagenomics protocol (NetoVIR) to ...

Rift Valley fever : an open-source transmission dynamics simulation model Universiteit Gent Instituut voor Tropische Geneeskunde

Robert Sumaye, Famke Jansen, Dirk Berkvens, Bernard De Baets, Eveline Geubels, Etienne Thiry, Meryam Krit
Rift Valley fever (RVF) is one of the major viral zoonoses in Africa, affecting humans and several domestic animal species. The epidemics in eastern Africa occur in a 5-15 year cycle coinciding with abnormally high rainfall generally associated to the warm phase of the El Niño event. However, recently, evidence has been gathered of inter-epidemic transmission. An open-source, easily applicable, accessible and modifiable model was built to ...

Comparative Metagenomic Profiling of Viromes Associated with Four Common Mosquito Species in China KU Leuven

Han Xia, Yujuan Wang, Shi Chenyan, Evans Atoni, Lu Zhao, Zhiming Yuan
Vast viruses are thought to be associated with mosquitoes. Anopheles sinensis, Armigeres subalbatus, Culex quinquefasciatus, and Culex tritaeniorhynchus are very common mosquito species in China, and whether the virome structure in each species is species-specific has not been evaluated. In this study, a total of 2222 mosquitoes were collected from the same geographic location, and RNAs were sequenced using the Illumina Miseq platform. After ...