الفهرس 
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Abstract
The word Decapoda is created by the combination of the Greek words deka meaning ’ten’ and pous meaning ’foot’ and is used to classify a variety of familiar marine invertebrates such as shrimp, lobster, crayfish, hermit crabs and crabs (OceanLink, 2007).The classification of the order Decapoda and overall the class crustacea have always been a difficult task due to their morphological diversity and the lack of a fossil record amongest its species (Martin &Davis, 2001). Classification of Crustacea is based on a variety of methods including the use of cladistics molecular systematics, developmental genetics, sperm and larval morphology (McLaughlin & Lemaitre, 2000).