Featured Research

from universities, journals, and other organizations

When Bears Steal Human Food, Mom's Not To Blame

Date:
May 10, 2008
Source:
Wildlife Conservation Society
Summary:
Black bears that become habituated to human food and garbage may not be learning these behaviors exclusively from their mothers, as widely assumed. Bears that steal human food sources are just as likely to form these habits on their own or pick them up from unrelated, "bad influence" bears, researchers have found.

According to a study by researchers from the Wildlife Conservation Society, black bears that become habituated on human food and garbage do not necessarily learn these behaviors from their mother as previously assumed.
Credit: Jon Beckmann/Wildlife Conservation Society

Researchers from the Wildlife Conservation Society (WCS) found that the black bears that become habituated to human food and garbage may not be learning these behaviors exclusively from their mothers, as widely assumed. Bears that steal human food sources are just as likely to form these habits on their own or pick them up from unrelated, "bad influence" bears.

Related Articles


The study, which examines the role of genetic relatedness in black bear behavior that leads to conflict with humans, appears in the latest edition of the Journal of Mammalogy.

"Understanding how bears acquire behavior is important in conservation biology and devising strategies to minimize potential human-wildlife conflicts," says Dr. Jon Beckmann, a co-author of the study. "According to our findings, bears that feed on human food and garbage are not always learning these habits from their mothers."

Distributed across much of North America, black bears--which average around 300 pounds in weight--become a problematic species for wildlife managers when they become accustomed to human sources of food, and the habit is a hard one to break. Bears that develop these tendencies often remain 'problem' bears for human communities, leading to property damage, injuries to people, not to mention costly relocation and sometimes death for bears.

Working in both the Lake Tahoe Basin on the California-Nevada border and California's Yosemite National Park (where bears breaking into visitors' cars has become commonplace), the researchers examined genetic and behavioral data for 116 black bears. The bears were classified as either food-conditioned (or hooked on human food) or non-food-conditioned (those bears that forage on natural food sources). The study also focused on nine mother-offspring pairs to test the assumption that mother bears teach their cubs to invade garbage bins or homes.

The verdict: Researchers found little evidence linking food-conditioned behavior with related lineage. The study indicates that bears may seek out human food as a function of social learning that may be independent of close relatives, or as a habit that is acquired in isolation from other bears. Specifically, the study identified the mothers of nine of the bears in the study, of which five (56 percent) did not share the behavioral habits of their mothers.

"These findings can help inform management strategies that would otherwise assume that cubs will always repeat the behaviors of food-conditioned mothers," says Dr. Jodi Hilty, Director of WCS-North America. "Moving mothers and cubs may have only a limited effect in eliminating human-bear conflicts, which seem to be primarily driven by human food sources that are available to bears."

Meanwhile on the East Coast, WCS-Adirondacks has been supplying the High Peaks Wilderness Area in upstate New York with bear-proof food canisters for campers to rent at local stores. A recent survey found that 95 percent of campers now use the canisters, and reports of conflicts between bears and campers have declined significantly.


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. "When Bears Steal Human Food, Mom's Not To Blame." ScienceDaily. ScienceDaily, 10 May 2008. <www.sciencedaily.com/releases/2008/05/080507105606.htm>.
Wildlife Conservation Society. (2008, May 10). When Bears Steal Human Food, Mom's Not To Blame. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2008/05/080507105606.htm
Wildlife Conservation Society. "When Bears Steal Human Food, Mom's Not To Blame." ScienceDaily. www.sciencedaily.com/releases/2008/05/080507105606.htm (accessed October 25, 2014).

Share This



More Plants & Animals News

Saturday, October 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Deep Sea 'mushroom' Could Be Early Branch on Tree of Life

Reuters - Innovations Video Online (Oct. 24, 2014) Miniature deep sea animals discovered off the Australian coast almost three decades ago are puzzling scientists, who say the organisms have proved impossible to categorise. Academics at the Natural History of Denmark have appealed to the world scientific community for help, saying that further information on Dendrogramma enigmatica and Dendrogramma discoides could answer key evolutionary questions. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Black Bear Cub Goes Sunday Shopping

Black Bear Cub Goes Sunday Shopping

Reuters - Light News Video Online (Oct. 23, 2014) Price check on honey? Bear cub startles Oregon drugstore shoppers. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Dances With Wolves in China's Wild West

Dances With Wolves in China's Wild West

AFP (Oct. 23, 2014) One man is on a mission to boost the population of wolves in China's violence-wracked far west. The animal - symbol of the Uighur minority there - is under threat with a massive human resettlement program in the region. Duration: 00:41 Video provided by AFP
Powered by NewsLook.com
Breakfast Debate: To Eat Or Not To Eat?

Breakfast Debate: To Eat Or Not To Eat?

Newsy (Oct. 23, 2014) Conflicting studies published in the same week re-ignited the debate over whether we should be eating breakfast. 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:

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