Featured Research

from universities, journals, and other organizations

Amphibians May Develop Immunity To Fatal Fungus

Date:
April 10, 2009
Source:
American Institute of Biological Sciences
Summary:
A fungus threatens amphibians all over the globe and has contributed to extinctions. A consideration of amphibian immune responses to the fungus suggests that acquired as well as innate immunity play a role, and preliminary experimental results support this conclusion. Understanding the genetics of both types of immunity could help predict the spread of Bd and possibly support efforts to counter it.

Red-eyed tree frog. Amphibian populations are declining worldwide, principally because of the spread of the fungal disease chytridiomycosis. Researchers know that some amphibian populations and species are innately more susceptible to the disease than others.
Credit: iStockphoto/Mark Kostich

Amphibian populations are declining worldwide, principally because of the spread of the fungal disease chytridiomycosis. Researchers know that some amphibian populations and species are innately more susceptible to the disease than others.

Recent preliminary evidence, described in the April issue of BioScience, suggests also that individual amphibians can sometimes develop resistance to chytridiomycosis, which is caused by the fungus Batrachochytrium dendrobatidis (Bd). Jonathan Q. Richmond, of the US Geological Survey, and three coauthors argue that researchers should broaden their studies of chytridiomycosis to include so-called acquired immunity, because this might improve predictive models of Bd's spread and so suggest ways to protect threatened frog and toad populations.

Richmond and colleagues discuss experimental studies indicating that two species of New Zealand frogs infected with Bd but treated with the antimicrobial drug chloramphenicol were later resistant to reinfection with the fungus. Other studies indicate that North American toads that survived after being first exposed to Bd in dry conditions survived longer when reinfected in wet conditions than did toads that were exposed to Bd in wet conditions.

Richmond and colleagues emphasize that innate immunity has to be activated in an animal before acquired immunity can develop. They point to several key immune-system components—notably, toll-like receptors and major histocompatibility complex molecules—that most likely play a role in bridging the innate and the acquired immune systems, and urge researchers to undertake collaborative studies of the genetics of how these systems interact as Bd spreads.


Story Source:

The above story is based on materials provided by American Institute of Biological Sciences. Note: Materials may be edited for content and length.


Cite This Page:

American Institute of Biological Sciences. "Amphibians May Develop Immunity To Fatal Fungus." ScienceDaily. ScienceDaily, 10 April 2009. <www.sciencedaily.com/releases/2009/04/090401101745.htm>.
American Institute of Biological Sciences. (2009, April 10). Amphibians May Develop Immunity To Fatal Fungus. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2009/04/090401101745.htm
American Institute of Biological Sciences. "Amphibians May Develop Immunity To Fatal Fungus." ScienceDaily. www.sciencedaily.com/releases/2009/04/090401101745.htm (accessed August 20, 2014).

Share This




More Plants & Animals News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Awesome New Camouflage Sheet Was Inspired By Octopus Skin

Newsy (Aug. 19, 2014) Scientists have developed a new device that mimics the way octopuses blend in with their surroundings to hide from dangerous predators. Video provided by Newsy
Powered by NewsLook.com
Disquieting Times for Malaysia's 'fish Listeners'

Disquieting Times for Malaysia's 'fish Listeners'

AFP (Aug. 19, 2014) Malaysia's last "fish listeners" -- practitioners of a dying local art of listening underwater to locate their quarry -- try to keep the ancient technique alive in the face of industrial trawling and the depletion of stocks. Duration: 02:29 Video provided by AFP
Powered by NewsLook.com
USDA Cracks Down On Imports From Foreign Puppy Mills

USDA Cracks Down On Imports From Foreign Puppy Mills

Newsy (Aug. 18, 2014) New USDA measures to regulate dog imports aim to crack down on buying dogs from overseas puppy mills. Video provided by Newsy
Powered by NewsLook.com
Bone Marrow Drug Regrows Hair In Some Alopecia Patients

Bone Marrow Drug Regrows Hair In Some Alopecia Patients

Newsy (Aug. 18, 2014) Researchers performed an experiment using an FDA-approved drug known as ruxolitinib. They found it to be successful in the majority of patients. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins