Dependence of CO2-baited suction trap captures on temperature variations.
In order to provide better standardized CO2-baited trap samples, the relationship between sample size and evening temperatures was studied. Adult mosquitoes were collected for 3 h centered on sunset by an automatic interval suction trap baited with CO2 in the Upper Rhine Valley, Germany. Aedes vexans females were most abundant, and their blood-seeking activity showed a significant correlation with the evening's average temperature (r = 0.76, P < or = 0.05). A higher degree of correlation was obtained when the number of specimens caught was related to temperature indices (r = 0.93-0.98, P < or = 0.01). A regression equation indicates the lower temperature threshold for Aedes vexans was between 9 and 10 degrees C. For each degree of increase in the average temperature index, it was estimated that a 5.5% greater number of mosquitoes would be trapped. An upper temperature threshold for this species was not observed at average temperatures < or = 23 degrees C. A relationship between catches of Aedes rossicus and Aedes cinereus and temperatures recorded at the site during the study was not found.
Petric
D
D
University of Novi Sad, Institute for Plant Protection, Yugoslavia.
Zgomba
M
M
Ludwig
M
M
Becker
N
N
D000330:Aedes; D000818:Animals; D002245:Carbon Dioxide; D004772:Entomology / Q000379:methods; D005260:Female; D009032:Mosquito Control; D013696:Temperature
D002245:Carbon Dioxide