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Insecticide-Drenched Nets Could Have Encouraged The Emergence Of Resistant Hybrid "Super" Mosquitoes Humans are constantly engaged in an evolutionary arms race with pathogens. We spend years developing drugs, such as antibiotics or antivirals, only for resistance to rapidly appear. The same thing happens when we confront troublesome weeds with herbicides, or crop-ravaging insects with pesticides. Now, humans have been dealt another devastating blow with the emergence of a hybrid malaria mosquito that is resistant to the insecticides on treated bed nets. What's more, scientists believe that the introduction of these nets could have promoted the emergence of these hybrid "super mosquitoes."

Insecticide-Drenched Nets Could Have Encouraged The Emergence Of Resistant Hybrid "Super" Mosquitoes Humans are constantly engaged in an evolutionary arms race with pathogens. We spend years developing drugs, such as antibiotics or antivirals, only for resistance to rapidly appear. The same thing happens when we confront troublesome weeds with herbicides, or crop-ravaging insects with pesticides. Now, humans have been dealt another devastating blow with the emergence of a hybrid malaria mosquito that is resistant to the insecticides on treated bed nets. What's more, scientists believe that the introduction of these nets could have promoted the emergence of these hybrid "super mosquitoes."

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Based on this text : 1. Identify the biological process by which the malaria carrying mosquitoes (Anopheles coluzzi or Anopheles Gambian) developed insecticide resistance. USE THIS SENTENCE STARTER: The mosquitoes developed insecticide resistance by..
--- **Insecticide-Drenched Nets Could Have Encouraged The Emergence Of Resistant Hybrid "Super" Mosquitoes** Humans are constantly engaged in an evolutionary arms race with pathogens. We spend years developing drugs, such as antibiotics or antivirals, only for resistance to rapidly appear. The same thing happens when we confront troublesome weeds with herbicides, or crop-ravaging insects with pesticides. Now, humans have been dealt another devastating blow with the emergence of a hybrid malaria mosquito that is resistant to the insecticides often treated bed nets. What’s more, scientists believe that the introduction of these nets could have promoted the emergence of these hybrid “super mosquitoes.” This worrying situation is occurring in Mali, West Africa, which has been struggling with malaria for many years. Because malaria is transmitted by mosquitoes, it is a preventable disease which also has the potential to be eradicated. Since 2000, malaria mortality rates have fallen by 47% globally, and by 54% in Africa. This is partly due to the use of insecticide-treated mosquito nets which prevent people from being bitten. Millions of these mosquito nets are delivered yearly, including to Mali, and they have been a huge success. But unfortunately, in 2006, Mali's malaria situation began to worsen. Scientists noticed that a malaria-carrying mosquito species, **Anopheles coluzzii**, was becoming increasingly resistant to insecticides. In order to find out how these resistance genes could have arisen, scientists examined the DNA of both this species and another malaria vector, **Anopheles gambiae**. As described in *Proceedings of the National Academy of Sciences*, they found that the mutations conferring resistance in **A. coluzzii** were the same gene variations previously only found in **A. gambiae**. This was a strange observation due to the fact that these species do not usually interbreed, and the resulting hybrids usually die without reproducing, *The Verge* reports. However, it was evident that the mutations in **A. coluzzii** started to appear when the two species began interbreeding. What's more, the emergence of these hybrids seemed to coincide with the introduction of the insecticide-drenched nets. Although a correlation cannot prove anything, the evidence presented could suggest that the mosquito nets played a major role in driving hybridization between two different species, which ultimately led to the emergence of “super” resistant hybrid mosquitoes. “A man-made change in the
Transcribed Image Text:--- **Insecticide-Drenched Nets Could Have Encouraged The Emergence Of Resistant Hybrid "Super" Mosquitoes** Humans are constantly engaged in an evolutionary arms race with pathogens. We spend years developing drugs, such as antibiotics or antivirals, only for resistance to rapidly appear. The same thing happens when we confront troublesome weeds with herbicides, or crop-ravaging insects with pesticides. Now, humans have been dealt another devastating blow with the emergence of a hybrid malaria mosquito that is resistant to the insecticides often treated bed nets. What’s more, scientists believe that the introduction of these nets could have promoted the emergence of these hybrid “super mosquitoes.” This worrying situation is occurring in Mali, West Africa, which has been struggling with malaria for many years. Because malaria is transmitted by mosquitoes, it is a preventable disease which also has the potential to be eradicated. Since 2000, malaria mortality rates have fallen by 47% globally, and by 54% in Africa. This is partly due to the use of insecticide-treated mosquito nets which prevent people from being bitten. Millions of these mosquito nets are delivered yearly, including to Mali, and they have been a huge success. But unfortunately, in 2006, Mali's malaria situation began to worsen. Scientists noticed that a malaria-carrying mosquito species, **Anopheles coluzzii**, was becoming increasingly resistant to insecticides. In order to find out how these resistance genes could have arisen, scientists examined the DNA of both this species and another malaria vector, **Anopheles gambiae**. As described in *Proceedings of the National Academy of Sciences*, they found that the mutations conferring resistance in **A. coluzzii** were the same gene variations previously only found in **A. gambiae**. This was a strange observation due to the fact that these species do not usually interbreed, and the resulting hybrids usually die without reproducing, *The Verge* reports. However, it was evident that the mutations in **A. coluzzii** started to appear when the two species began interbreeding. What's more, the emergence of these hybrids seemed to coincide with the introduction of the insecticide-drenched nets. Although a correlation cannot prove anything, the evidence presented could suggest that the mosquito nets played a major role in driving hybridization between two different species, which ultimately led to the emergence of “super” resistant hybrid mosquitoes. “A man-made change in the
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