Featured Research

from universities, journals, and other organizations

Study Explores Which Carnivores Are Most Likely To Kill Other Carnivores

Date:
March 9, 2006
Source:
University of Chicago Press Journals
Summary:
Ecologists used to think of prey as the most important factor governing the structure of predator communities. However, over the past twenty years, they have increasingly recognized the importance of interspecific killing -- carnivores killing carnivores -- in determining ecology and behavior. A new study by Emiliano Donadio and Steven W. Buskirk (University of Wyoming), forthcoming from The American Naturalist, explores which carnivores are most likely to participate in these interactions, and why.

Ecologists used to think of prey as the most important factor governing the structure of predator communities. However, over the past twenty years, they have increasingly recognized the importance of interspecific killing -- carnivores killing carnivores -- in determining ecology and behavior.

Related Articles


A new study by Emiliano Donadio and Steven W. Buskirk (University of Wyoming) explores which carnivores are most likely to participate in these interactions, and why.

"Although food exploitation is influential in predisposing carnivores to attack each other, relative body size of the opponents appears to be overwhelmingly important," write the authors.

In theory, explain the authors, carnivore species of similar body size would be most likely to compete for similar prey, increasing the likelihood of lethal encounters. However, they found that attacks from carnivores on other carnivores were most frequent when body sizes were moderately different and diet overlap extensive.

When the difference in body size was small, they were less likely to attack, no matter how much the diet of the two species overlapped, because the risks of an attack were high.

When the difference in body size was intermediate, then the larger species of carnivore was much more willing to attack and kill the smaller carnivore species. Explain the authors, "The larger carnivore perceives the opponent as large enough to be a competitor, yet small enough to be defeated with low risk."

Donadio, Emiliano, and Steven W. Buskirk. "Diet, morphology, and interspecific killing in carnivora," The American Naturalist 167:4.


Story Source:

The above story is based on materials provided by University of Chicago Press Journals. Note: Materials may be edited for content and length.


Cite This Page:

University of Chicago Press Journals. "Study Explores Which Carnivores Are Most Likely To Kill Other Carnivores." ScienceDaily. ScienceDaily, 9 March 2006. <www.sciencedaily.com/releases/2006/03/060308212037.htm>.
University of Chicago Press Journals. (2006, March 9). Study Explores Which Carnivores Are Most Likely To Kill Other Carnivores. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2006/03/060308212037.htm
University of Chicago Press Journals. "Study Explores Which Carnivores Are Most Likely To Kill Other Carnivores." ScienceDaily. www.sciencedaily.com/releases/2006/03/060308212037.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

New Dinosaur Species Found in Museum Collection

New Dinosaur Species Found in Museum Collection

Reuters - Innovations Video Online (Nov. 27, 2014) A British palaeontologist has discovered a new species of dinosaur while studying fossils in a Canadian museum. Pentaceratops aquilonius was related to Triceratops and lived at the end of the Cretaceous Period, around 75 million years ago. Jim Drury has more. Video provided by Reuters
Powered by NewsLook.com
Classic Hollywood Memorabilia Goes Under the Hammer

Classic Hollywood Memorabilia Goes Under the Hammer

Reuters - Entertainment Video Online (Nov. 26, 2014) The iconic piano from "Casablanca" and the Cowardly Lion suit from "The Wizard of Oz" fetch millions at auction. Sara Hemrajani reports. Video provided by Reuters
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

From Popcorn To Vending Snacks: FDA Ups Calorie Count Rules

Newsy (Nov. 25, 2014) The US FDA is announcing new calorie rules on Tuesday that will require everywhere from theaters to vending machines to include calorie counts. 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