trezor.io
Rate this file (Rating : 5 / 5 with 1 votes)
coconut crab
trezor.io

Coconut Crab

Crabs often show marked sexual dimorphism. Males often have larger claws, a tendency which is particularly pronounced in the fiddler crabs of the genus Uca (Ocypodidae). In fiddler crabs, males have one claw which is greatly enlarged and which is used for communication, particularly for attracting a mate. Another conspicuous difference is the form of the pleon (abdomen); in most male crabs, this is narrow and triangular in form, while females have a broader, rounded abdomen. This is due to the fact that female crabs brood fertilised eggs on their pleopods.
Behaviour
Crabs typically walk sideways (a behaviour which gives us the word crabwise). This is because of the articulation of the legs which makes a sidelong gait more efficient. However, some crabs prefer to walk forwards or backwards, including raninids, Libinia emarginata and Mictyris platycheles.. Some crabs, notably the Portunidae and Matutidae, are also capable of swimming.

File information
Filename:129537.jpg
Album name:Fauna & Flora
Rating (1 votes):55555
Keywords:#coconut #crab
Filesize:81 KiB
Date added:Jun 02, 2009
Dimensions:500 x 624 pixels
Displayed:9 times
URL:displayimage.php?pid=129537
Favorites:Add to Favorites