地球上寿命最长动物一览表

The longest-lived animals on Earth, in one chart

(Niall McCarthy/Statista)

When you think of animals that can live a really long time, you probably think of tortoises and parrots.

The ocean quahog — a species of clam that lives in the North Atlantic — likely doesn't come to mind.

But this chart by Niall McCarthy, based off data collected

by Discovery News, shows an interesting point: almost all of the

longest-lived animals on Earth are in the ocean. And several of them can survive for two centuries or more.

MANY OF THESE ANIMALS ARE VIRTUALLY IMMUNE TO PREDATORS

Why are these species capable of living for so incredibly long? One commonality is that in many cases, either their size (as with the

bowhead whale) or some sort of external protection (the quahog or red sea urchin) makes them virtually immune to predators.

\that provide longevity, because they can provide a real advantage,\Jay Olshanksy, a public health researcher who studies aging, told me last year for an article about the naked mole rat, a rodent that can live for up to 30 years.

When predation isn't a threat, there's a big evolutionary advantage in developing physiological systems that allow an animal to live longer — since it can mean producing more offspring — and all that investment won't get wiped out if a random predator were to come by for a meal. When predation is a constant threat, though (as is the case for the vast majority of animals), there's no selective pressure that leads to animals evolving to live for centuries. A good analogy is a car: if you bought a junker you knew would break down in 10,000 miles, it wouldn't make sense to invest in a high-end stereo

百度搜索“77cn”或“免费范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读，免费范文网，提供经典小说教育文库地球上寿命最长动物一览表在线全文阅读。