For the first time, scientists have recorded the heat rate of the biggest species of animal on Earth.
Their extreme size has also fascinated scientists looking to understand their physiology—how they got to be so big and whether they could get any larger., a team led by Jeremy Goldbogen, from Stanford University, report how the were able to attach a heart monitor to a blue whale in California's Monterey Bay. The male, who is known to be at least 15 years old, was followed for 8.5 hours, during which it dove down over 600 feet for up to 16.5 minutes.
Findings showed that while diving, the whale's heart rate dropped to between four and eight beats per minute. At its lowest, it fell to just two beats per minute. After coming back up to the surface, the heart rate increased to 37 beats per minute—which is close to the estimated maximum heart rate of a blue whale.
The blue whale tagged by the researchers. The team found that during dives, the animal's heart rate could drop as low as two beats per minute.The team was surprised at their findings. The upper limit almost exceeded expectations, while the lower heart rate was about 30 to 40 percent slower than predicted. They believe blue whales must have specialized, stretchy aortic arches. This part of the heart helps push blood out to the body.
Deutschland Neuesten Nachrichten, Deutschland Schlagzeilen
Similar News:Sie können auch ähnliche Nachrichten wie diese lesen, die wir aus anderen Nachrichtenquellen gesammelt haben.
UK Cinema Chains Pull Movie ‘Blue Story’ Following Mass Brawl At Birmingham Venue; Distributor Paramount RespondsTwo major UK cinema circuits have pulled Brit movie Blue Story following a disturbance at a Vue venue in the city of Birmingham. Police officers were called to reports of youths with machetes at th…
Weiterlesen »
BBC Films Stands by ‘Blue Story’ as U.K. Theater Chains Pull Movie After Violent BrawlBBC Films has defended the new film “Blue Story” as a powerful depiction of “the futility of gang violence” after a violent mass brawl marred a weekend screening of t…
Weiterlesen »
Ciara Steals the Show on AMAs Red Carpet in Electrifying Blue OutfitBefore her hosting gig begins, Ciara hits the 2019 American Music Awards red carpet leaving us speechless in her electrifying blue lewk.
Weiterlesen »
Blue Bombers tame Tiger-Cats to end Grey Cup droughtThe Winnipeg Blue Bombers ended a 29-year Grey Cup drought by beating the Hamilt...
Weiterlesen »
British Theater Chain Pulls Gang Film ‘Blue Story’ After Mass BrawlBritish-based exhibition chain Vue has pulled gang film “Blue Story” from its theaters after a brawl among dozens of moviegoers – some of them apparently wielding machetes – erupted at …
Weiterlesen »
Cinema chain defends pulling gang film 'Blue Story' from UK theatersA UK cinema chain is defending its decision to pull gang-warfare film 'Blue Story' from theaters, hitting back at accusations of bias and saying it documented more than 25 'significant incidents' at theaters within the first day of the film's opening.
Weiterlesen »