Featured Research

from universities, journals, and other organizations

Big Cats Need Cat Food: New Model Directly Links Tiger Numbers To Amount Of Prey, Study Says

Date:
March 25, 2004
Source:
Wildlife Conservation Society
Summary:
Scientists from the New York-based Wildlife Conservation Society (WCS) and their collaborators from the US Geological Survey's wildlife research center in Maryland have developed a model that shows a solid quantitative relationship between tiger numbers and the amount of prey available to these highly endangered big cats.

Scientists from the New York-based Wildlife Conservation Society (WCS) and their collaborators from the US Geological Survey's wildlife research center in Maryland have developed a model that shows a solid quantitative relationship between tiger numbers and the amount of prey available to these highly endangered big cats. Published in the latest edition of the Proceedings of the National Academy of Sciences, the model can not only accurately predict tiger density over a variety of habitats, but also help safeguard populations by pinpointing the causes of their decline.

Related Articles


The authors tested their model by sampling tiger and prey populations in 11 ecologically distinct sites in India – from grasslands to dry forests – over an eight-year period, with teams of biologists walking more than 4,200 miles to count prey animals, and setting hundreds of camera traps over 8,600 days of effort. Densities of ungulate prey such as deer, antelopes, wild cattle and wild pigs ranged from a low of 5.3 animals per square kilometer in Meghat Reserve, to more than 63 per square kilometer in Pench Reserve. The model predictions matched the measured tiger densities ranging between 3.2 to 16.8 tigers per 100 square kilometers.

According to WCS scientist Dr. Ullas Karanth, the lead author of the study, the rigorous methods and extensive field component of this study set it apart from most population ecology research, which is often carried out on smaller animals in laboratories.

"When it comes to macro-ecological studies on far-ranging landscape species like tigers and their prey, the biological, statistical and practical problems involved have proved too daunting in the past, compelling scientists to draw weak inferences, usually based on secondary data," said Dr. Karanth. "We tackled this problem head-on by immersing ourselves for eight years in the secret world of the tiger."

"Our results confirm that decline of wild tigers is primarily driven by prey-depletion caused by human hunters," Karanth added. "Conservationists should direct their concerns at reducing such negative human impacts." WCS's conservation efforts to save tigers in India and throughout their range are featured in "Tiger Mountain," a new exhibit that opened at the Bronx Zoo last May.


Story Source:

The above story is based on materials provided by Wildlife Conservation Society. Note: Materials may be edited for content and length.


Cite This Page:

Wildlife Conservation Society. "Big Cats Need Cat Food: New Model Directly Links Tiger Numbers To Amount Of Prey, Study Says." ScienceDaily. ScienceDaily, 25 March 2004. <www.sciencedaily.com/releases/2004/03/040323074249.htm>.
Wildlife Conservation Society. (2004, March 25). Big Cats Need Cat Food: New Model Directly Links Tiger Numbers To Amount Of Prey, Study Says. ScienceDaily. Retrieved January 27, 2015 from www.sciencedaily.com/releases/2004/03/040323074249.htm
Wildlife Conservation Society. "Big Cats Need Cat Food: New Model Directly Links Tiger Numbers To Amount Of Prey, Study Says." ScienceDaily. www.sciencedaily.com/releases/2004/03/040323074249.htm (accessed January 27, 2015).

Share This


More From ScienceDaily



More Plants & Animals News

Tuesday, January 27, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

How To: Mixed Green Salad Topped With Camembert Cheese

How To: Mixed Green Salad Topped With Camembert Cheese

Rumble (Jan. 26, 2015) Learn how to make a mixed green salad topped with a pan-seared camembert cheese in only a minute! Music: Courtesy of Audio Network. Video provided by Rumble
Powered by NewsLook.com
Water Fleas Prepare for Space Voyage

Water Fleas Prepare for Space Voyage

Reuters - Innovations Video Online (Jan. 26, 2015) Scientists are preparing a group of water fleas for a unique voyage into space. The aquatic crustaceans, known as Daphnia, can be used as a miniature model for biomedical research, and their reproductive and swimming behaviour will be tested for signs of stress while on board the International Space Station. Jim Drury went to meet the team. Video provided by Reuters
Powered by NewsLook.com
Husky Puppy Plays With Ferret

Husky Puppy Plays With Ferret

Rumble (Jan. 26, 2015) It looks like this 2-month-old Husky puppy and the family ferret are going to be the best of friends. Look at how much fun they&apos;re having together! Credit to &apos;Vira&apos;. Video provided by Rumble
Powered by NewsLook.com
Scientists Model Flying, Walking Drone After Vampire Bats

Scientists Model Flying, Walking Drone After Vampire Bats

Buzz60 (Jan. 26, 2015) Swiss scientists build a new drone that can both fly and walk, modeling it after the movements of common vampire bats. Jen Markham (@jenmarkham) 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