Difference between revisions of "Alligator" - New World Encyclopedia
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{{Taxobox begin | color = pink | name = Alligators}} | {{Taxobox begin | color = pink | name = Alligators}} | ||
{{Taxobox image | image = [[image:Gatrhole.jpg|American Alligator]] | caption = [[American Alligator]]}} | {{Taxobox image | image = [[image:Gatrhole.jpg|American Alligator]] | caption = [[American Alligator]]}} | ||
Revision as of 19:56, 14 June 2007
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Alligator mississippiensis |
An alligator is a crocodilian in the genus Alligator of the family Alligatoridae. There are two living alligator species: the American Alligator (Alligator mississippiensis) and the Chinese Alligator (Alligator sinensis). They are closely related to crocodiles. The name alligator is an anglicized form of the Spanish el lagarto ("the lizard"), the name by which early Spanish explorers and settlers in Florida called the alligator.
Description
Alligators are characterized by a broader snout and eyes more dorsally located than their crocodile cousins. Both living species also tend to be darker in color, often nearly black (although the Chinese alligator has some light patterning.) Also, in alligators only the upper teeth can be seen with the jaws closed (in contrast to true crocodiles, in which upper and lower teeth can be seen), though many individuals bear jaw deformities which complicate this means of identification.
The eyes of an alligator glow red when a light is shined on them. This fact can be used to find alligators in the dark.
According to the Everglades National Park website, the largest alligator ever recorded in Florida was 17 feet 5 inches long (5.3 meters). The largest alligator ever recorded measured 19 feet 2 inches (5.8 meters) and was found on Marsh Island, Louisiana.[1]
Habitat
There are only two countries on earth that have alligators: the United States and China. The Chinese alligator is endangered and lives only in the Yangtze River valley. The American Alligator is found in the United States from the Carolinas to Florida and along the Gulf Coast. The majority of American Alligators inhabit Florida and Louisiana. In Florida alone there are an estimated more than 1 million alligators. The United States is the only nation on earth to have both alligators and crocodiles. American Alligators live in freshwater environments, such as ponds, marshes, wetlands, rivers, and swamps. In China, they live only along the fresh water of the Yangtze River.
Behavior
Alligators are solitary, territorial animals. The largest of the species (both males and females), will defend prime territory; smaller alligators have a higher tolerance of other alligators within a similar size class.
Although alligators have heavy bodies and slow metabolisms, they are capable of short bursts of speed that can exceed 30 miles per hour.[2] Alligators' main prey are smaller animals that they can kill and eat with a single bite. Alligators may kill larger prey by grabbing it and dragging it in the water to drown. Alligators consume food that cannot be eaten in one bite by allowing it to rot or by biting and then spinning or convulsing wildly until bite size pieces are torn off. This is referred to as the "death roll."
Diet
Alligators are opportunistic feeders, eating almost anything they can catch. When they are young they eat fish, insects, snails, and crustaceans. As they grow they take progressively larger prey items, including: larger fish such as gar, turtles, various mammals, birds, and other reptiles, including smaller alligators. They will even consume carrion if they are sufficiently hungry. As humans encroach onto to their habitat, attacks on humans are not unknown, but are few and far between.
Reproduction
Alligators are seasonal breeders. The mating season is in spring when the water warms. The female builds a nest of vegetation that rots, incubating the eggs. The mother will defend the nest from predators and will assist the babies to water once they hatch. She will provide protection to the young for about a year if they remain in the area.
Gallery
- Alligator en Louisiane.jpg
Alligator in Louisiana
- Alligator submerged.jpg
An Alligator swimming at periscope depth
- Alligatoracp.jpg
Alligator being challenged
See also
- List of fatal alligator attacks in the United States by decade
ReferencesISBN links support NWE through referral fees
External links
- Crocodilian Online http://www.crocodilian.com
- Everglades National Park Alligators
Credits
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