美洲鳄

读者: 7548    发布时间: 2008

原文: American Crocodile

Photo: American crocodile emerges from the waters.

American Crocodile Profile

The American crocodile is considered an endangered species in nearly all parts of its North, Central, and South American range. Survey data, except in the United States, is poor or nonexistent, but conservationists agree that illegal hunting and habitat depletion has reduced populations of this wide-ranging reptile to critical levels.

A small, remnant population lives in southern Florida, but most are found in southern Mexico, Central America, the Caribbean, and northern South America. Their habitat of choice is the fresh or brackish water of river estuaries, coastal lagoons, and mangrove swamps.

A prehistoric-looking creature, it is distinguishable from its cousin, the American alligator, by its longer, thinner snout, its lighter color, and two long teeth on the lower jaw that are visible when its mouth is closed.

This species is among the largest of the world's crocodiles, with Central and South American males reaching lengths of up to 20 feet (6.1 meters). Males in the U.S. population rarely exceed 13 feet (4 meters), however.

Their diet consists mainly of small mammals, birds, fish, crabs, insects, snails, frogs, and occasionally carrion. They have been known to attack people, but are far more likely to flee at the sight of humans.

Most countries in the American crocodile's range have passed protection laws, but unfortunately, few governments provide adequate enforcement.

Fast Facts

Type: Reptile
Diet: Carnivore
Average lifespan in the wild: Up to 70 years
Size: Up to 15 ft (4.6 m)
Weight: Up to 2,000 lbs (907 kg)
Group name: Bask (on land) or float (in water)
Did you know? One of the largest known populations of American crocodiles is in the Dominican Republic's Lago Enriquillo, a landlocked, hypersaline lake located about 131 feet (40 meters) below sea level.
Protection status: Endangered
Size relative to a 6ft (2m) man:
Illustration of the animal's relative size

译文: 美洲鳄

Photo: American crocodile emerges from the waters. 

美洲鳄简介
 
美洲鳄生活在北美、中美和南美,是一个濒临灭绝的物种。关于美洲鳄的资料,在美国以外的地区少得可怜,甚至几乎没有。动物保护者认为,非法猎杀以及人为的破坏鳄鱼栖息地使这种本来分布广泛的动物濒临灭绝。
现在在佛罗里达州南部只生活着很小的一部分美洲鳄,大部分都生活在墨西哥南部、中美洲、加勒比海地区和南美洲的北部。

美洲鳄的生活区域大多是河口三角湾、沿海环礁湖和红树林沼泽地带的淡水或咸水中。
美洲鳄这种史前生物同它的近亲美洲短吻鳄很好区分,它有着长且薄的嘴,象驳船一样的颜色,下颌部长着两排长长的牙齿,就算不张嘴也能看到。
美洲鳄是世界上最大的鳄鱼之一。中美洲和南美洲的雄性美洲鳄最大长度可达20英尺(6.1米)。而生活在美国的雄性美洲鳄最大长度也就是13英尺(4米)。
美洲鳄的食物主要是小型哺乳动物、鸟类、鱼、螃蟹、昆虫、贝壳类动物、青蛙,有时还吃一些腐肉。众所周知,鳄鱼袭击人类。但是大多数情况下,它们一件到人就会逃跑。
.大多数拥有美洲鳄的国家已经颁布了美洲鳄保护法,但是不幸的是,几乎没有几个国家认真地执行过。

Illustration of the animal's relative size


基本信息
 
纲:爬行

目:食肉

野生平均寿命: 可达70岁

长度: 可达15英尺(4.6米)

体重: 可达2,000 英镑(907公斤)

生活习性: 在沙滩上晒太阳或在水上漂浮。

你知道吗?世界上最大的美洲鳄群生活在多米尼加共和国的Lago Enriquillo,那里是一个内陆咸水湖,低于海平面131英尺(40米)。

保护现状: 濒临灭绝

美洲鳄和6英尺(2米)的男人对比图: