Friday, 15 December 2017

Heart monitors on wild narwhals reveal alarming responses to stress


As sea ice melts, new findings add to concerns about the effects of ocean noise and increased human activity on deep-diving Arctic whales

Date:  December 7, 2017
Source:  University of California - Santa Cruz

Summary:
Stress from human disturbances could cause behavioral responses in narwhals that are inconsistent with their physiological capacities, researchers say. They found that narwhals released after entanglement in nets and outfitted with heart monitors performed a series of deep dives, swimming hard to escape, while their heart rates dropped to unexpectedly low levels of three to four beats per minute.

Continued  

No comments:

Post a comment

You only need to enter your comment once! Comments will appear once they have been moderated. This is so as to stop the would-be comedian who has been spamming the comments here with inane and often offensive remarks. You know who you are!

Related Posts with Thumbnails

ShareThis