When scientists have found a way to combat these malaria-carrying mosquitoes, these mosquitoes have learned resistance of insecticide treated bed nets by biting earlier in the day, according to a recent study.
Insecticides to fight the disease-carrying Anopheles
have also recently evolved from toxic to non-toxic, which the recent one disrupts the malaria-carrying mosquitoes' reproductive abilities
The recent findings by Liverpool School of Tropical Medicine led by Lisa Reimer showed that the mosquitoes in one of their monitored communities in Papua New Guinea have shifted their feeding behavior.
Before the distribution of bed nets in the area before 2008, the average biting time of the mosquitoes was around midnight. After distribution around 2009-2011, the median biting time moved a bit earlier at 10 pm. Most of these mosquitoes also learned to take their blood feeding earlier at 7 to 9 pm.
DBH via bed nets showed strong effectiveness against malaria prevalence.
During the distribution of the bed nets, the rate of bites per person have dropped but after awhile in subsequent years the number began to rise. It turned out that the mosquitoes have learned to adapt and evade the time that people get in under their bed nets.
The experts do insist that its the malaria count that matters to them which in fact remained at a stand still and has not significantly risen in one village.
A female Anopheles albimanus mosquito is a vector of malaria disease.
Reimer still believes that the use of bed nets shall continue, but the monitoring of these stubborn mosquitoes must continue.
The study is published in Oxford Journals of Infectious Diseases
Source: New Insecticide Swells Up Mosquitoes Until They Pop!