About Careers MedBlog Contact us
Medindia LOGIN REGISTER
Advertisement

Genetic Anomaly may Cause Mosquitoes to Feed on Cattle Instead of Humans

by Shirley Johanna on September 20, 2016 at 7:39 PM
Font : A-A+

Genetic Anomaly may Cause Mosquitoes to Feed on Cattle Instead of Humans

Mosquitoes that carry a specific chromosomal rearrangement in their genes are more likely to feed on cattle than on humans. Thus, the odds of transmitting the malaria parasite in reduced, finds a new study.

The parasite causing the disease is carried by Anopheles mosquitoes species that transmit it to humans by biting them. One of these species is Anopheles arabiensis, which is the primary vector of malaria in East African countries.

Advertisement


Rates of malaria transmission depends on whether mosquitoes bite humans. When mosquitoes bite cattle, malaria does not spread because these animals are dead-end hosts.

The transmission also depends whether mosquitoes rest after their meals in areas where they are likely to encounter pesticides, the study said.
Advertisement

Using a population genomics approach, the study established an association between human feeding and a specific chromosomal rearrangement in the major east African malaria vector.

"Whether there is a genetic basis to feeding preferences in mosquitoes has long been debated. This work paves the way for identifying specific genes that affect this critically important trait," said Bradley Main, researcher at the University of California - Davis, in the US.

In the study, the team sequenced the genomes of 23 human-fed and 25 cattle-fed mosquitoes collected indoors and outdoors from the Kilobero Valley in Tanzania.

An analysis of these genomes allowed them to identify a chromosomal rearrangement -- known as the 3Ra inversion -- associated with cattle feeding.

It however did not appear to have an impact on the mosquitoes' resting behaviors.

Using genetics to better understand and track mosquito behaviour can improve local control strategies.

This knowledge may also open novel avenues for stopping malaria's spread, such as genetically modifying mosquitoes to prefer cattle over people, the researchers noted, in the paper published in the journal PLOS Genetics.



Source: IANS
Advertisement

Advertisement
News A-Z
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
What's New on Medindia
Test  Your Knowledge on Heart
Test Your Knowlege on Genes
Obesity in Teens Make Inroads into Early Atrial Fibrillation
View all
Recommended Reading
News Archive
Date
Category
Advertisement
News Category

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Genetics and Stem Cells Christianson Syndrome 

Most Popular on Medindia

Loram (2 mg) (Lorazepam) A-Z Drug Brands in India Pregnancy Confirmation Calculator Diaphragmatic Hernia Accident and Trauma Care Drug Interaction Checker Drug Side Effects Calculator Iron Intake Calculator Selfie Addiction Calculator Drug - Food Interactions
This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use
×

Genetic Anomaly may Cause Mosquitoes to Feed on Cattle Instead of Humans Personalised Printable Document (PDF)

Please complete this form and we'll send you a personalised information that is requested

You may use this for your own reference or forward it to your friends.

Please use the information prudently. If you are not a medical doctor please remember to consult your healthcare provider as this information is not a substitute for professional advice.

Name *

Email Address *

Country *

Areas of Interests