• search
For Quick Alerts
For Daily Alerts

Like humans, whales 'shout louder' to overcome noise

By Samyuktha

Washington, July 7 (ANI): Just like humans, North American right whales increasing the volume of their calls as environmental noise increases - a trend that scientists say could endanger the species further.

This noise might affect the whales' communication range for feeding or mating will shrink and stress levels on individual animals may rise.

"Right whale upcalls are used extensively for passive acoustic monitoring in conservation efforts to protect this endangered species," said Susan Parks, assistant professor of acoustics and research associate, Applied Research Laboratory, Penn State.

An upcall begins low and rises in pitch. It is the most frequent call produced by right whales when they are alone or in the process of joining with other whales.

Parks and her colleagues, Mark Johnson and Peter L. Tyack, Woods Hole Oceanographic Institution and Douglas Nowacek, Duke University believe that much of the increase in background ocean noise in right whale habitat is believed to be due to commercial shipping.

"Ocean sound levels will probably continue to increase due to human activities and there is a physical limit to the maximum source level that an animal can produce," said Parks.

The study appears in today's (July 6) issue of Biology Letters. (ANI)

For Daily Alerts
Get Instant News Updates
Notification Settings X
Time Settings
Clear Notification X
Do you want to clear all the notifications from your inbox?
Settings X
We use cookies to ensure that we give you the best experience on our website. This includes cookies from third party social media websites and ad networks. Such third party cookies may track your use on Oneindia sites for better rendering. Our partners use cookies to ensure we show you advertising that is relevant to you. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on Oneindia website. However, you can change your cookie settings at any time. Learn more