About Careers Internship MedBlogs Contact us
Medindia LOGIN REGISTER
Advertisement

Making of The Perfect Invading Parasite

by Nancy Needhima on July 23, 2012 at 1:41 PM
Font : A-A+

Making of The Perfect Invading Parasite

Characteristics of invading parasites, using malaria in New Zealand bird species, documented for the first time by the scientists from the Zoological Society of London (ZSL).

The study, published today in Ecology Letters, identifies the factors influencing the success of parasites unintentionally introduced to new environments.

Advertisement

Avian malaria is a disease caused by species of parasites, of the genus Plasmodium, which infects birds. Just like human malaria, it is spread by mosquitoes, and the parasites spend part of their lives in red blood cells of birds. Avian malaria is common in continental areas, but is often absent from isolated islands where mosquitoes are less prevalent.

More than 800 exotic and native host birds were studied in a range of areas across Northern New Zealand. They detected parasite infection by extracting DNA from blood and analysing it to look at specific segments of genes. They then looked in more detail at the characteristics of the parasites they found to see if they had features that made them more likely to be present in bird hosts in New Zealand.
Advertisement

ZSL's Dr John Ewen, who is from New Zealand himself, says: "We have found a surprisingly high diversity of malaria parasites in New Zealand, including two found nowhere else in the world. However, most parasites we found are recent arrivals, probably from infected birds released by humans. They tend to be widespread and common strains, which can infect a broad range of bird hosts. These findings will help us understand the what, when and how of exotic parasite introductions globally."

The global movement of parasites beyond their native country is an increasing problem, especially in the conservation of species. Many introduced parasites flourish in new environments and some can even be invasive. Little is known about the traits which enable parasites to survive and thrive.

ZSL's Professor Tim Blackburn added: "While we know a lot about the traits of successful vertebrate species invasions, our knowledge of the parasites they may carry is largely a blank page. This is alarming given that these co-introduced parasites can have catastrophic consequences for the natives they encounter, an example illustrated by smallpox introduced to the New World by the early European colonists."

This is the first study looking at the specific features of the exotic parasites within an isolated island bird community. New Zealand has a highly threatened bird community, sensitive to many human caused changes with exotic species being a major threat. ZSL scientists and colleagues are continuing to work on developing appropriate risk assessments for New Zealand's iconic native biodiversity and in understanding why some environments are more likely to be invaded by parasites than others.

Source: Eurekalert
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
COVID Toes
International Yoga Day 2022 - 'Yoga for Humanity'
Wearable Devices Are Now Transforming Depression, Multiple Sclerosis, and Epilepsy Management.
View all
News Archive
Date
Category
News Category

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

Most Popular on Medindia

Noscaphene (Noscapine) Color Blindness Calculator Calculate Ideal Weight for Infants Blood - Sugar Chart Find a Doctor Drug Side Effects Calculator Nutam (400mg) (Piracetam) Pregnancy Confirmation Calculator Sinopril (2mg) (Lacidipine) Blood Donation - Recipients

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2022

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
open close
CONSULT A DOCTOR