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Giant coconut crab

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kevin deleg

on 3 December 2013

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Transcript of Giant coconut crab

Giant coconut crab
Coconut crab behavior
Coconut crabs are usually solitary feeders. If physically possible, they will drag the food they have acquired to their burrows to avoid confrontations with other coconut crabs. Coconut crabs are easily frightened by other species.
Life cycle
The breeding season of coconut crabs falls between late May and early September. Fertilization occurs on dry land, and the embryos are carried by the female on the underside of her body until the time of hatching. When the time comes, they are released into the ocean. This is the only stage of their lives spent in water. The larvae float in the water for about a month, after which they find a shell suitable for their size, and start visiting dry land. After several changes of shells, the infants finally develop hard exoskeletons, at which point they crawl out of the water permanently. They gradually lose the ability to breathe underwater. They reach sexual maturity after five years. And become individuals.
Classification and name
What they eat
Despite their name, coconuts are not the coconut crab's favorite meal. They usually eat the flesh, seeds, and pith of fresh fruits. In addition to fruits, they act as scavengers, feeding on carcasses, and also seek out nuts. They do sometimes consume coconuts, but it is an occasional treat, rather than a staple diet. They rip off the husk, and then either use their strong claws to crack open the tough shells, or climb up a tree and drop the fruit from a height.
The scientific name of the giant coconut crab is birgus latro. It is also called the robber crab, because it steals shiny things from humans.
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Decapoda
Superfamily: Paguroidea
Family: Coenobitidae
Genus: Birgus
Leach, 1816
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Family: Coenobitidae
Genus: Birgus
Species: Latro
Scientific Classification
Coconut crabs live alone in underground burrows and rock crevices. They dig their own burrows in sand or loose soil. During the day, the animal stays hidden, to protect itself from predators and reduce water loss from heat. They live almost exclusively on land, and some have been found up to 6 km from the ocean.
The giant coconut crab has strong claws that could lift up to 28 kilograms, and crack open a coconut easily. It is the largest arthropod in the world.
The giant coconut is about 1 meter(3ft 3in) long, and it weighs about 4 kilograms(9 lb). They can live up to 40 years, and are also cold blooded.
Threats and Predators
Pigs, rats, monitor lizards and monkeys are a threat to juvenile Coconut crabs. It is also frequently eaten by the residents of the southwest Indo-Pacific islands where it is found.
This is a comparison of a juvenile coconut crab to an adult coconut crab
Coconut crabs live in the blue area which are mostly coasts and the red dots are their first choice of settlement and the yellow dots are their second choice.
The closest relative the coconut crab has is the hermit crab. They both dig their own burrows, they are solitary, and they both use gastropods shells for protection.
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