➽=ALL First recording of a blue whale’s heart rate ‘sometimes the heart beats only twice per minute’.
3rd December 2019 Ibezim chukwuemerie 0 Comments
For the first time in the world, scientist have recorded the heart rate of a blue whale. The data suggested that the mammal pushes its heart to the limit. The maximum recorded was 37 beats per minute. The data also revealed that sometimes the heart beats only twice per minute. To get this reading, they attached an electrocardiogram device to the body of a whale.
Encased in a neon orange plastic shell, a collection of electronic sensors bobbed along the surface of the Monterey Bay, waiting to be retrieved by Stanford University researchers. A lunchbox-sized speck in the vast waters, it held cargo of outsized importance: the first-ever recording of a blue whale’s heart rate. This device was fresh off a daylong ride on Earth’s largest species a blue whale. Four suction cups had secured the sensor-packed tag near the whale’s left flipper, where it recorded the animal’s heart rate through electrodes embedded in the center of two of the suction feet.
The details of this tag’s journey and the heart rate it delivered were published in Proceedings of the National Academy of Sciences. https://humanbioscience.org/2019/12/first-recording-of-a-blue-whales-heart-rate.html
On Mars, Auroras Glow All Summer Long in UV Light SAN FRANCISCO — Auroras unfurling in Martian skies are stunning displays, and they also offer important clues about how the Red Planet’s water escapes into its atmosphere, scientists reported on Dec. 12 here at the annual meeting of the American Geophysical Union (AGU).
A type of aurora called a proton aurora was first identified on Mars in 2016, using data from the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft. This aurora, which occurs during daytime and produces ultraviolet light, is invisible to the naked eye, but was spotted by MAVEN’s Imaging UltraViolet Spectrograph (IUVS) instrument. https://www.livescience.com/martian-proton-auroras.html
Amazing Facts About the Blue Whale
- The Blue Whale is the largest animal ever to have lived on earth.
- Despite being so massive, this giant of the ocean feeds on some of the smallest marine life – tiny shrimp like animals called krill. A single adult blue whale can consume 36,000 kg of krill a day.
- Incredibly, Blue Whales are graceful swimmers cruise the ocean at over 8km/h, and can reach speeds of over 30km/h.
- They mainly catch their food by diving, and descend to depths of approximately 500 m.
- Blue whales have few predators but are known to fall victim to attacks by sharks and killer whales, and many are injured or die each year from impacts with large ships. https://onekindplanet.org/animal/whale-blue/