Marine Iguanas - astonishing Facts Explained
Agosto 22nd, 2010 by eve6906813The Marine Iguana (Amblyrhynchus cristatus) however moved not as rapid but they are better swimmers and they stop in seawater coastlines as their home because they live on eating algae. The iguana can only be found only on the Galapagos Islands The entire coastline is inhabited by marine iguanas. Their ability is current among novel lizards, to live and forage in the sea. It has spread to all the islands in the archipelago and is sometimes called the Galapagos Marine Iguana. It lives on the rocks of the Galapagos shore and can be seen in marshes or mangrove beaches.
Amblyrhynchus cristatus are mostly dim but the young have lighter color and a dorsal stripe. Adult specimens appear in grayish color. Scientists elaborate that marine iguanas have to have sad dark emerge from water. They feed on marine algae almost entirely. It is incandescent that they are designed to expel salt through nasal glands. The expelled salt coating could originate their faces white. Adult males vary in color according to season. During breeding season, male adults in the south appear as reddish and teal-green colors while it is brick red and dismal in Sta Cruz Island and in brick red and greenish in Fernandina Islands.
The marine iguanas living in the Galapagos differ in size according to their host islands. Those in the Fernandina and Isabela islands are the largest, while those on the Genovesa Island are the smallest. Adult males’ length may arrive up to 1.3 m long while females could be around 0.6 m. They may weigh up to 1.5 kg.
Marine iguanas may also vary in their size according to varying food conditions. When algae decreased for a period of two years during an El Nino, Their length size decreases to as considerable as 20%. When the food supply normalized, their lengths returned to regular size. It is believed that their bones shrink during those periods of food shortage.
The marine iguana can only conclude a runt period in water as to hunt for algae as they are frosty blooded animals. However, if they search for food around shallow waters, they could end up to half an hour and underwater. After each dive, they return to the shore and bask under the sun to normalize body temperature. When cool, the marine iguanas tend to be more aggressive. Actually that is their defense mechanism because in reality, as their body is cool from under the water, they cannot disappear rapid and avoid predators. So they become aggressive when anyone approaches them.
The main predators of marine iguanas are cats and dogs. They are easy victims as these lizards moves very dead. The population of the marine iguanas in the Galapagos Island is dwindling because of predation and El Nino. They are estimated at 50,000 to 100,000. The species is protected by Ecuadorian laws.
Scientists occupy that land and marine iguanas may have evolved from approved ancestor. Other opinions claim that they may have evolved from an ragged sea reptile.
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