Featured Research

from universities, journals, and other organizations

Malaria protection in chimpanzees

Date:
May 29, 2013
Source:
Max Planck Institute for Evolutionary Anthropology
Summary:
In malaria regions the parasite prevalence in the human body as well as malaria-related morbidity and mortality decrease with age. This reflects the progressive mounting of a protective immunity. Researchers now present a study which addresses the age distribution of malaria parasite infection in a group of wild chimpanzees.

Group of chimpanzees, Taο National Park, Cote d’Ivoire.
Credit: © Sonja Metzger

In malaria regions the parasite prevalence in the human body as well as malaria-related morbidity and mortality decrease with age. This reflects the progressive mounting of a protective immunity. Researchers of the Max Planck Institute for Evolutionary Anthropology and the Robert Koch-Institute now present a study which addresses the age distribution of malaria parasite infection in a group of wild chimpanzees.

To this end the researchers collected 141 faecal samples from seven female and twelve male wild chimpanzees from Taο National Park, Cote d'Ivoire. At time of sampling the animals' ages ranged between 3 and 47 years. The researchers extracted DNA from the faecal samples, analysed it and so identified the malaria parasite-positive samples. "In the course of this 2-month study almost every individual chimpanzee of the group was found positive at least once," says Hιlθne De Nys of the Max Planck Institute for Evolutionary Anthropology and the Robert Koch-Institute. "Our data further suggest that at every point in time at least one individual of this chimpanzee group is infected."

Further analyses showed that malaria parasites were detected more often in younger than in older animals. Whether these were female or male, however, did not make a difference. "This is the first indication that epidemiological characteristics of malaria parasite infection in wild chimpanzee populations might be comparable to those in human populations," says Roman Wittig of the Max Planck Institute for Evolutionary Anthropology. "As in humans, the development of acquired immunity likely plays an important role in wild chimpanzees as well."

Throughout this process, malaria parasites might also contribute directly to decimating young chimpanzees. During analyses performed on more than 30 dead adult chimpanzees from the same community malaria could be excluded as the cause of death. For young chimpanzees, however, the question remains open. While it is known that mortality in young chimpanzees is high, their bodies are rarely accessible. This is because they are less likely to be found and because their carcasses are carried for several days by their mothers. "Even though at this stage, we cannot pinpoint pathogenicity of malaria parasites found in wild chimpanzees, our results suggest a continuous exposure of this population, leading to the development of a certain resistance to infection," says Fabian Leendertz of the Robert Koch-Institute.


Story Source:

The above story is based on materials provided by Max Planck Institute for Evolutionary Anthropology. Note: Materials may be edited for content and length.


Journal Reference:

  1. H. M. De Nys, S. Calvignac-Spencer, U. Thiesen, C. Boesch, R. M. Wittig, R. Mundry, F. H. Leendertz. Age-related effects on malaria parasite infection in wild chimpanzees. Biology Letters, 2013; 9 (4): 20121160 DOI: 10.1098/rsbl.2012.1160

Cite This Page:

Max Planck Institute for Evolutionary Anthropology. "Malaria protection in chimpanzees." ScienceDaily. ScienceDaily, 29 May 2013. <www.sciencedaily.com/releases/2013/05/130529092722.htm>.
Max Planck Institute for Evolutionary Anthropology. (2013, May 29). Malaria protection in chimpanzees. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2013/05/130529092722.htm
Max Planck Institute for Evolutionary Anthropology. "Malaria protection in chimpanzees." ScienceDaily. www.sciencedaily.com/releases/2013/05/130529092722.htm (accessed July 28, 2014).

Share This




More Plants & Animals News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Sea Turtle Hatchlings Emerge from Nest

Raw: Sea Turtle Hatchlings Emerge from Nest

AP (July 27, 2014) — A live-streaming webcam catches loggerhead sea turtle hatchlings emerging from a nest in the Florida Keys. (July 27) Video provided by AP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) — A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com
What's To Blame For Worst Ebola Outbreak In History?

What's To Blame For Worst Ebola Outbreak In History?

Newsy (July 27, 2014) — A U.S. doctor has tested positive for the deadly Ebola virus, as the worst-ever outbreak continues to grow. Video provided by Newsy
Powered by NewsLook.com
The New York Times Backs Pot Legalization

The New York Times Backs Pot Legalization

Newsy (July 27, 2014) — The New York Times has officially endorsed the legalization of marijuana, but why now, and to what end? 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