Featured Research

from universities, journals, and other organizations

What Makes A Host Profitable? Parasites Balance Host Nutritive Resources Against Immunity

Date:
January 7, 2008
Source:
University of Chicago Press Journals
Summary:
Is host immunity enough to explain parasite success? Scientists have shown that parasites balance host nutritive resources against immunity. They conducted research in a free-living colonial bird whose nestlings are heavily infested by blood sucking ectoparasites. They observed that ectoparasites achieved highest survival on nestlings in intermediate condition.

Is host immunity enough to explain parasite success? Scientists based at the Universities of Glasgow, Scotland, and Lausanne, Switzerland, have shown that parasites balance host nutritive resources against immunity.

Related Articles


Pierre Bize, Caroline Jeanneret, Aurιlie Klopfenstein, and Alexandre Roulin conducted research in Switzerland in a free-living colonial bird whose nestlings are heavily infested by blood sucking ectoparasites. They observed that ectoparasites achieved highest survival on nestlings in intermediate condition.

By manipulating nestling food resources and cutaneous immune responses, they then demonstrated that ectoparasite blood meal size, and in turn survival, is shaped positively by host nutritive resources and negatively by host immunity.

"The important point of our study," states Pierre Bize, the lead author, "is that although parasites have a poor survival when feeding on hosts in prime conditions, because these hosts can mount a potent immune response, the reverse is not true.

Indeed, parasites also have a reduced survival when feeding on hosts in poor conditions and with a low immune response, which points out that immunity is not the only factor accounting for parasite fitness." Alexandre Roulin adds, "The appraisal of what factors make a host profitable are vital for our understanding of host-parasite interactions, and in turn to the implement of well-designed parasite control programmes."

This research was published in the January issue of the American Naturalist.


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University of Chicago Press Journals. "What Makes A Host Profitable? Parasites Balance Host Nutritive Resources Against Immunity." ScienceDaily. ScienceDaily, 7 January 2008. <www.sciencedaily.com/releases/2008/01/080104171908.htm>.
University of Chicago Press Journals. (2008, January 7). What Makes A Host Profitable? Parasites Balance Host Nutritive Resources Against Immunity. ScienceDaily. Retrieved November 25, 2014 from www.sciencedaily.com/releases/2008/01/080104171908.htm
University of Chicago Press Journals. "What Makes A Host Profitable? Parasites Balance Host Nutritive Resources Against Immunity." ScienceDaily. www.sciencedaily.com/releases/2008/01/080104171908.htm (accessed November 25, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, November 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) — The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. Video provided by Newsy
Powered by NewsLook.com
Feast Your Eyes: Lamb Chop Sent Into Space from UK

Feast Your Eyes: Lamb Chop Sent Into Space from UK

Reuters - Light News Video Online (Nov. 25, 2014) — Take a stab at this -- stunt video shows a lamb chop's journey from an east London restaurant over 30 kilometers into space. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Cambodian Capital's Only Working Elephant to Retire in Jungle

Cambodian Capital's Only Working Elephant to Retire in Jungle

AFP (Nov. 25, 2014) — Phnom Penh's only working elephant was blessed by a crowd of chanting Buddhist monks Tuesday as she prepared for a life of comfortable jungle retirement after three decades of giving rides to tourists. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Stray Dog Follows Adventure Racing Team for 6-Day Endurance Race

Buzz60 (Nov. 24, 2014) — A Swedish Adventure racing team travels to try and win a world title, but comes home with something way better: a stray dog that joined the team for much of the grueling 430-mile race. Jen Markham has the story. Video provided by Buzz60
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:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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