Drachiella (crab)
Family, Crabs, Genera, Fossil, Waters
978-620-1-55605-8
6201556052
84
2012-07-13
34.00 €
eng
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Drachiella is a genus of crabs in the family Aethridae, containing one fossil species, and the following species, 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.
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Zoology
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