Featured Research

from universities, journals, and other organizations

Elephant behavior and conservation issues

Date:
February 28, 2012
Source:
University of Notre Dame
Summary:
Researchers are using fieldwork and genetics research to uncover insights into elephant population genetics and social behavior as well as how human activities alter elephants' social and genetic structures.

Last year, Kenya lost 278 elephants to poachers, as compared to 177 in 2010. On the continent of Africa as whole, elephants have declined from an estimated 700,000 in 1990 to 360,000 today due to the demands of the ivory trade.
Credit: paul hampton / Fotolia

Last year, Kenya lost 278 elephants to poachers, as compared to 177 in 2010. On the continent of Africa as whole, elephants have declined from an estimated 700,000 in 1990 to 360,000 today due to the demands of the ivory trade.

Spend some time with University of Notre Dame researchers Elizabeth Archie and Patrick Chiyo and you'll gain a better understanding of just what a tragic loss elephant poaching is.

A thinking, reasoning species with extraordinary memories, a strong sense of family and caring and nurturing natures are increasingly at the risk of extinction.

Archie's Notre Dame lab combines fieldwork and genetics research to understand the causes and consequences of social behavior in wild mammals. Her research team examines how migration, mating and social patterns impact the genetics and evolution of a species and its fitness and susceptibility to diseases.

Archie, Clare Boothe Luce Assistant Professor of Biology, and Chiyo, a Moreau postdoctoral fellow, use research techniques that range from behavioral observations of wild animals to noninvasive genetic tools to genotype species and their parasites and patterns.

The research lab studies baboons and elephants in Kenya. Archie and Chiyo work with the Amboseli Elephant Research Project (AERP), located just north of Mount Kilimanjaro in Kenya, which is the longest running study of wild elephants.

In the field, the researchers observe the behavior of the elephants and collect samples for genetic analysis, usually from noninvasive sources such as dung. In their Notre Dame lab, they use the dung samples to characterize the parasites infecting individual animals and extract DNA to conduct genetic analyses.

Their fieldwork and genetic analyses are revealing fascinating insights into elephant population genetics and social behavior, as well as how human activities alter elephants' social and genetic structures.

Their research has found, for example, that female elephants form strong and lasting social ties with the members of their natal core group. Male elephants, by contrast, disperse from their core natal group at maturity and never join a new core group permanently.

Poaching interrupts the beneficial female social relationships and could lead to lower reproductive rates for females, further reducing the species. For male elephants, age is an important predictor of reproductive success. Poaching appears to reduce the age of first reproduction for males and lead to a reproductive skew, which may increase the rate at which genetic diversity is lost from natural elephant populations.

Archie and Chiyo have also investigated the "crop raiding" behavior of African elephants. Scientists have determined that crop raiding is a male elephant behavior and that not all males participate. The Notre Dame researchers found that up to 20 percent of males may be crop raiders, and males are twice as likely to raid at their reproductive peak.

Males older than 45 were twice as likely to raid, although some males in their 20s also participated in the raiding. The researchers discovered that younger males were more likely to raid if they were following older role models.

These and other research insights are demonstrating how genetic tolls can be used to understand and preserve social species.


Story Source:

The above story is based on materials provided by University of Notre Dame. The original article was written by William G. Gilroy. Note: Materials may be edited for content and length.


Cite This Page:

University of Notre Dame. "Elephant behavior and conservation issues." ScienceDaily. ScienceDaily, 28 February 2012. <www.sciencedaily.com/releases/2012/02/120228190930.htm>.
University of Notre Dame. (2012, February 28). Elephant behavior and conservation issues. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2012/02/120228190930.htm
University of Notre Dame. "Elephant behavior and conservation issues." ScienceDaily. www.sciencedaily.com/releases/2012/02/120228190930.htm (accessed September 23, 2014).

Share This



More Plants & Animals News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Ice Age Wooly Mammoth Remains for Sale

Raw: Ice Age Wooly Mammoth Remains for Sale

AP (Sep. 23, 2014) A rare, well-preserved skeleton of a woolly mammoth is going on sale at Summers Place Auctions hope the 11.5-foot tall, almost intact specimen will fetch between $245,000 to $409,000. (Sept. 23) Video provided by AP
Powered by NewsLook.com
Fox Bites Conn. Student And School Staffers In Rare Attack

Fox Bites Conn. Student And School Staffers In Rare Attack

Newsy (Sep. 23, 2014) A fox attacked a second-grade boy at a Connecticut elementary school Monday. It also attacked two school staff members and a woman and her dog. Video provided by Newsy
Powered by NewsLook.com
Will Living Glue Be A Thing?

Will Living Glue Be A Thing?

Newsy (Sep. 23, 2014) Using proteins derived from mussels, engineers at MIT have made a supersticky underwater adhesive. They're now looking to make "living glue." Video provided by Newsy
Powered by NewsLook.com
Raw: Tiger Kills Man at India Zoo

Raw: Tiger Kills Man at India Zoo

AP (Sep. 23, 2014) A white tiger killed a young man who climbed over a fence at the New Delhi zoo and jumped into the animal's enclosure on Tuesday, a spokesman said. (Sept. 23) Video provided by AP
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