Navigation Links
Notre Dame researchers are providing insights into elephant behavior and conservation issues
Date:2/28/2012

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 families 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 Booth 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 in 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 analysis.

Their field work and genetic analysis 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 over 45 were twice as likely to raid, although some males in their twenties 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.


'/>"/>
Contact: Elizabeth Archie
earchie@nd.edu
574-631-0178
University of Notre Dame
Source:Eurekalert

Related biology news :

1. Notre Dame biologists tackling big question in evolution
2. Notre Dame researchers report fundamental malaria discovery
3. Notre Dame researchers report progress on compound to treat neurological diseases
4. Notre Dame researchers demonstrate antibiotic sensing event central to MSRA antibiotic resistance
5. Notre Dame research reveals brain network connections
6. Breakthrough in Niemann-Pick Type C research reported by Notre Dame and Cornell scientists
7. Notre Dame research offers important clues about grasshopper population explosions
8. Notre Dame biologists call for regulation of rare plant sales
9. Notre Dame researcher helps discover walking properties of bacteria
10. Notre Dame and Wyoming scientists genetically engineer silkworms to produce artificial spider silk
11. Twins are intriguing research subjects for Notre Dame biometircs researchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/7/2016)...  Syngrafii Inc. and San Antonio Credit Union ... integrating Syngrafii,s patented LongPen™ eSignature "Wet" solution into ... result in greater convenience for SACU members and ... existing document workflow and compliance requirements. ... Highlights: ...
(Date:6/2/2016)... The Weather Company , an IBM Business (NYSE: IBM ... which consumers will be able to interact with IBM Watson ... or text and receive relevant information about the product or ... long sought an advertising solution that can create a one-to-one ... valuable; and can scale across millions of interactions and touchpoints. ...
(Date:5/24/2016)... facilitates superior patient care by providing unparalleled technology to leaders of the medical imaging ... product recently added to the range of products distributed by Ampronix. Photo ... ... ... News ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... ... June 27, 2016 , ... Newly ... technologies, services and solutions to the healthcare market. The company's primary focus is ... manufacturing, sales and marketing strategies that are necessary to help companies efficiently bring ...
(Date:6/24/2016)... SAN DIEGO , June 24, 2016 /PRNewswire/ ... that more sensitively detects cancers susceptible to PARP ... individual circulating tumor cells (CTCs). The new test ... of HRD-targeted therapeutics in multiple cancer types. ... therapies targeting DNA damage response pathways, including PARP, ...
(Date:6/23/2016)... Mass. , June 23, 2016   ... development of novel compounds designed to target cancer ... napabucasin, has been granted Orphan Drug Designation from ... the treatment of gastric cancer, including gastroesophageal junction ... stemness inhibitor designed to inhibit cancer stemness pathways ...
(Date:6/23/2016)... -- The Prostate Cancer Foundation (PCF) is pleased to announce 24 new ... prostate cancer. Members of the Class of 2016 were selected from a pool ... Read More About the Class of 2016 PCF Young Investigators ... ... ...
Breaking Biology Technology: