| Title: | "Anopheles arabiensis oviposition site selection in response to habitat persistence and associated physicochemical parameters, bacteria and volatile profiles" |
| Author(s): | Eneh LK; Fillinger U; Borg Karlson AK; Kuttuva Rajarao G; Lindh J; |
| Address: | "Chemical Ecology, Department of Chemistry, School of Engineering Science in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Stockholm, Sweden. International Centre of Insect Physiology and Ecology, Human Health Theme, Thomas Odhiambo Campus, Mbita, Kenya. Department of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH, Royal Institute of Technology, Stockholm, Sweden" |
| ISSN/ISBN: | 1365-2915 (Electronic) 0269-283X (Print) 0269-283X (Linking) |
| Abstract: | "A better understanding of the oviposition behaviour of malaria vectors might facilitate the development of new vector control tools. However, the factors that guide the aquatic habitat selection of gravid females are poorly understood. The present study explored the relative attractiveness of similar artificial ponds (0.8 m(2) ) aged at varying lengths prior to opening in such a way that wild Anopheles arabiensis could choose between ponds that were freshly set up, or were aged 4 or 17 days old, to lay eggs. Physicochemical parameters, bacterial profile and volatile organic compounds emitted from ponds were investigated over three experimental rounds. Fresh ponds contained on average twice as many An. arabiensis instar larvae (mean 50, 95% confidence interval (CI) = 29-85) as the ponds that had aged 4 days (mean = 24, 95% CI = 14-42) and 17 days (mean = 20, 95% CI: 12-34). Fresh ponds were associated with a significantly higher turbidity combined with higher water temperature, higher nitrite levels and a lower pH and chlorophyll level than the older ponds. Round by round analyses suggested that bacteria communities differed between age groups and also that 4-heptanone, 2-ethylhexanal and an isomer of octenal were exclusively detected from the fresh ponds. These characteristics may be useful with respect to developing attract and kill strategies for malaria vector control" |
| Keywords: | Animals Anopheles/*physiology Bacteria/*isolation & purification Choice Behavior *Ecosystem Female *Oviposition Ponds/*chemistry Volatile Organic Compounds/*analysis Malaria denaturing gradient gel electrophoresis oviposition physicochemical parameter vol; |
| Notes: | "MedlineEneh, L K Fillinger, U Borg Karlson, A K Kuttuva Rajarao, G Lindh, J eng R01 AI082537/AI/NIAID NIH HHS/ Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't England 2018/09/01 Med Vet Entomol. 2019 Mar; 33(1):56-67. doi: 10.1111/mve.12336. Epub 2018 Aug 31" |
