Calappoidea的封面
书籍主题:

Calappoidea

Subphylum, Chelicerata, species, genus, horseshoe

UtilPublishing (2013-08-14 )

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ISBN-13:

978-620-1-55210-4

ISBN-10:
6201552103
EAN:
9786201552104
书籍语言:
英文
作品简介:
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Calappoidea is a superfamily of crabs comprising the two families Calappidae and Matutidae. The earliest fossils attributable to the Calappoidea date from the Aptian.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.
出版社 :
UtilPublishing
网址:
http://www.betascript-publishing.com
出版发行由:
Isidoros Krastyo Morpheus
页码 :
60
发表日期:
2013-08-14
现货:
备有现货
类别:
动物学
价格:
39.44 $
关键词:
species, genus, Horseshoe, Chelicerata, Subphylum

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