Monday 18 June 2012

LARVAE OF CRUSTACEA-ARTHROPODA

LARVAE OF CRUSTACEA-Crustacea developed both direct and indirect development.The adult is attained by a progressive growth and differentiation where as in the latter there is a larval stage which differs from the adult in many features and acquires adulthood through metamorphosis.
NAUPLIUS-It is simplest and commonest type of larva found in most marine crustaceans and a few malacostracans.The nauplius is the earliest and the basic larva.The body is minute with three indistinct of appendages -the uniramous antennules, biramous antenne and mandibles.In other crustaceans it may give rise to other intermediate larval forms such as metanauplius,protozoaea,zoaea,mysis.

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