Retrogressive metamorphosis in Ascidian larva

Описание к видео Retrogressive metamorphosis in Ascidian larva

Metamorphosis of the ascidian larva is unique. It involves transformation of an active,free swimming larva with advanced characters such as axial notochord,dorsal neural tube and special sense organs,into an inert, sedentary and simple adult with only a pharynx with stigmata and endostyle to indicates its chordate nature. This type of metamorphosis which show regression or degeneration from larva to adult is reffered to as retrogressive metamorphosis.

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