Navigation Links
Eating right key to survival of whales and dolphins: UBC research
Date:11/21/2012

In the marine world, high-energy prey make for high-energy predators. And to survive, such marine predators need to sustain the right kind of high-energy diet. Not just any prey will do, suggests a new study by researchers from the University of British Columbia and University of La Rochelle, in France.

Published today in the online journal PLOS ONE, the study is the first to show that the survival of whales and dolphins depends on the quality of their diets and this plays an important role in conservation.

"The conventional wisdom is that marine mammals can eat anything," says co-author Andrew Trites, a marine mammal expert at UBC. "However, we found that some species of whales and dolphins require calorie rich diets to survive while others are built to live off low quality preyand it has nothing to do with how big they are."

The team compared the diets of 11 species of whales, dolphins and porpoises in the Northeast Atlantic Ocean, and found differences in the qualities of prey consumed that could not be explained by the different body sizes of the predators. The key to understanding the differences in their diets was to look at their muscle performance.

"High energy prey tend to be more mobile, and require their predators to spend more energy to catch them," says Trites. "The two have co-evolved."

Jrme Spitz, the study's first author, says the research will help better assess the impact of resource changes to marine mammals.

"Species with high energy needs are more sensitive to depletion of their primary prey," says Spitz, a post-doctoral fellow at ULR in France, who completed the research while a visiting scholar at UBC. "It is no longer a question of how much food do whales and dolphins need, but whether they are able to get the right kinds of food to survive."


'/>"/>
Contact: Andrew Trites
a.trites@fisheries.ubc.ca
604-822-8182
University of British Columbia
Source:Eurekalert

Page: 1

Related biology news :

1. 15-year study: When it comes to creating wetlands, Mother Nature is in charge
2. Strong scientific evidence that eating berries benefits the brain
3. Nanotherapy: Treating deadly brain tumors by delivering big radiation with tiny tools
4. Beating famine: Sustainable food security through land regeneration in a changing climate
5. New hope for treating Alzheimers Disease: A role for the FKBP52 protein
6. Discovery offers insight into treating viral stomach flu
7. Binge eating may lead to addiction-like behaviors
8. Ultrasound idea: Prototype NIST/CU bioreactor evaluates engineered tissue while creating it
9. A new candidate pathway for treating visceral obesity
10. Creating energy from light and air - new research on biofuel cells
11. Weed-eating fish help protect jobs, livelihoods
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/14/2016)... March 14, 2016 NXTD ) ("NXT-ID" ... commerce market, announces the airing of a new series of ... week of March 21 st .  The commercials will air ... popular Squawk on the Street show. --> NXTD ... growing mobile commerce market, announces the airing of a new ...
(Date:3/10/2016)... March 10, 2016   Unisys Corporation (NYSE: ... Protection (CBP) is testing its biometric identity solution at ... to help identify certain non-U.S. citizens leaving the ... test, designed to help determine the efficiency and accuracy of ... February and will run until May 2016. --> ...
(Date:3/3/2016)... Calif. , March 3, 2016  FlexTech, a ... the categories of Innovation, Research & Development, Leadership in ... Leadership. This is the 9 th year of ... group of companies and individuals from past years ... based on a pre-described set of criteria, by a ...
Breaking Biology News(10 mins):
(Date:5/4/2016)... NY (PRWEB) , ... May 04, 2016 , ... The ... a genetic disorder that causes tumors to grow on nerves throughout the body. It ... cure. , Through numerous community events held during the month of May, as well ...
(Date:5/4/2016)... ... May 04, 2016 , ... Nutrafol®, a first-to-market ... treat hormonal and stress related hair loss. With patent-pending formulas for both female ... opinion leaders in the medical and salon channels nationwide. , Dermatologists, Plastic ...
(Date:5/3/2016)... ... May 03, 2016 , ... In a list published by ... the state’s 76 fastest-growing private companies; a small percentage of the state's 615,000+ small ... on the percent change in revenue from 2012 to 2015. , As ...
(Date:5/3/2016)... , ... May 03, 2016 , ... ... accessibility to unique bioresearch materials from laboratories across the globe, today announced the ... to increase the pace of research toward treatment and prevention measures for the ...
Breaking Biology Technology: