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Verfasst von:Lühken, Renke [VerfasserIn]   i
 Rauhöft, Leif [VerfasserIn]   i
 Pluskota, Björn [VerfasserIn]   i
 Lange, Unchana [VerfasserIn]   i
 Helms, Michelle [VerfasserIn]   i
 Becker, Norbert [VerfasserIn]   i
 Schmidt-Chanasit, Jonas [VerfasserIn]   i
 Kuhn, Carola [VerfasserIn]   i
 Tannich, Egbert [VerfasserIn]   i
 Jansen, Stephanie [VerfasserIn]   i
 Heitmann, Anna [VerfasserIn]   i
Titel:High vector competence for chikungunya virus but heavily reduced locomotor activity of Aedes albopictus from Germany at low temperatures
Verf.angabe:Renke Lühken, Leif Rauhöft, Björn Pluskota, Unchana Lange, Michelle Helms, Norbert Becker, Jonas Schmidt-Chanasit, Carola Kuhn, Egbert Tannich, Stephanie Jansen and Anna Heitmann
E-Jahr:2024
Jahr:04 December 2024
Umfang:8 S.
Illustrationen:Illustrationen
Fussnoten:Gesehen am 21.03.2025
Titel Quelle:Enthalten in: Parasites & vectors
Ort Quelle:London : BioMed Central, 2008
Jahr Quelle:2024
Band/Heft Quelle:17(2024), Artikel-ID 502, Seite 1-8
ISSN Quelle:1756-3305
Abstract:Background: The incidence of human infections caused by arthropod-borne viruses, such as the chikungunya virus (CHIKV), has increased globally due to a number of factors, such as climate change and globalization. The exotic mosquito species Aedes albopictus is a significant vector for CHIKV, raising concerns about its transmission potential in temperate regions, including Central Europe. We have therefore investigated the vector competence of Ae. albopictus for CHIKV at constant and fluctuating temperatures between 15 °C and 24 °C to assess the transmission risk in Europe. Methods: Aedes albopictus mosquitoes were reared and artificially infected with CHIKV. Infection rates and transmission efficiencies (TEs) were determined after 14 days of incubation at constant and fluctuating (± 5 °C) mean temperatures of 15 °C, 18 °C, 21 °C and 24 °C. In addition, mosquito locomotor activity was measured under the same fluctuating temperature conditions. A risk map for CHIKV transmission in Europe was generated combining temperature data and the current distribution of Ae. albopictus. Results: CHIKV transmission was observed at all tested temperatures. The highest TEs were recorded at fluctuating temperatures of 18 °C (54.3%) and 21 °C (58.6%), while the lowest TE was observed at a constant temperature of 15 °C (5.6%). TEs at fluctuating temperatures of 15 °C and 24 °C were the same (32.5%). Mosquito activity showed a nocturnal unimodal activity pattern with a peak during the start of the scotophase (hour 20). The proportion of active mosquitoes per hour increased with temperature and was nearly zero at 15 °C. The risk map indicated that regions in Southern and Central Europe, including recently invaded areas north of the Alps, have temperatures theoretically allowing CHIKV transmission for at least some days per year. Conclusions: While CHIKV can be transmitted by Ae. albopictus at 15 °C, the activity of this mosquito is strongly decreased at this temperature, likely reducing the transmission risk. These findings emphasize the importance of considering both vector competence and mosquito activity when assessing the risk of arbovirus transmission in temperate regions. Further studies are needed to validate these laboratory findings under field conditions.
DOI:doi:10.1186/s13071-024-06594-x
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.1186/s13071-024-06594-x
 DOI: https://doi.org/10.1186/s13071-024-06594-x
Datenträger:Online-Ressource
Sprache:eng
Sach-SW:Aedes albopictus
 Chikungunya virus
 Locomotor activity
 Low temperature
 Vector capacity
 Vector competence
K10plus-PPN:1920284060
Verknüpfungen:→ Zeitschrift

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