About My Health Careers Internship MedBlogs Contact us

Water Animals Expend Energy To Communicate Through Noisy Water Environment

by Julia Samuel on April 25, 2015 at 3:36 PM
Font : A-A+

Water Animals Expend Energy To Communicate Through Noisy Water Environment

Dolphins put in extra effort, raising their voices in order to communicate when their water environment becomes noisy.

Scientists at NOAA Fisheries' Northwest Fisheries Science Center and the University of California Santa Cruz, for the first time measured the biological costs to marine mammals, which try to communicate over the sounds of ship traffic or other sources. The report also noted that ship noise could interfere with the echolocation the whales use to locate and hunt for food.


Lead author Marla Holt said that if they're repeatedly exposed to a lot of noise, the repeated effort to call louder or longer or more often, that was where the impacts could become more significant. The new findings suggest that consistently noisy surroundings could take a toll on marine mammals that rely on calls for basic life functions such as communication and foraging.

The research examined the energy expenditures of trained captive dolphins at UC Santa Cruz as stand-ins for killer whales, since the species produce sound in similar ways. The dolphins were trained to whistle softly as they might in quiet conditions and more loudly as they would in situations with greater background noise. Plastic hoods over the dolphins measured their oxygen consumption as a gauge of how much energy they expended in producing the whistles of different volumes.

Dolphins consumed about 80% more oxygen when whistling at the highest vocal energy levels than they did at rest. Dolphins have been found to whistle at higher repetition rates when boats are approaching, a behavior that is predicted to expend more energy. The results are consistent with other similar studies on birds and humans that also found similar increase in oxygen consumption associated with longer, more frequent and louder calls.

Source: Medindia

News A-Z
News Category
What's New on Medindia
Ways to Manage Stress during COVID-19 Pandemic
Can Adjusting Fatty Acid Intake Improve Mood in Bipolar Disorder Patients?
Insulin Resistance Doubles the Risk of Major Depressive Disorder
View all

Medindia Newsletters Subscribe to our Free Newsletters!
Terms & Conditions and Privacy Policy.

More News on:
Water - Nutrient that Beats the Heat Tips for Healthy Fasting During Ramadhan Water Matters: Why You Need to Drink Enough Water Everyday 

Recommended Reading
Dolphins Have Names Like Humans
A new study has revealed that dolphins have names for each other and call for each other just like ....
Babbling Back to Babies Helps Them to Speak Faster!
Parents may not understand a baby's babbling and prattling but by listening, responding and ......
Dolphins Second Only to Humans in Storing Memory
Dolphins are considered to be one of the most intelligent aquatic species....
Dolphins Communicate Using Signature Whistles
Yet another evidence of the smartness of dolphins can be demonstrated by a new study which recently ...
Tips for Healthy Fasting During Ramadhan
Ramadhan calls for a change in your food habits, and to help you glide through it easily, here we’ve...
Water - Nutrient that Beats the Heat
Dehydration, acidity, loss of energy are common problems that often occur due to insufficient water ...
Water Matters: Why You Need to Drink Enough Water Everyday
Water is essential to balance body fluids, boost brain function, improve digestion, prevent kidney s...

Disclaimer - All information and content on this site are for information and educational purposes only. The information should not be used for either diagnosis or treatment or both for any health related problem or disease. Always seek the advice of a qualified physician for medical diagnosis and treatment. Full Disclaimer

© All Rights Reserved 1997 - 2021

This site uses cookies to deliver our services. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Use