Morphological Description of Megalopal Stages of Three Portunid Species (Decapoda, 2 Brachyura, Portunidae) from Indus Deltaic Area (northern-Arabian Sea)

The larvae of crustaceans, including those brachyuran crabs, are a significant part of
 zooplanktonic communities constituting an ecologically important fraction the pelagic
 communities. present study describes taxonomic studies on three megalop stages Portunus
 pelagicus (Linnaeus, 1758), Charybdis feriatus 1758) and Carcinus maenas (Linnaeus,
 belonging to family Portunidae collected from Indus deltaic creek system. Zooplankton
 samples were locations: Shahbandar 24°15’48.083’N, 67°90’15’333’E,
 Ketibandar 24°9’16.06’N, 67°27’7.64’E Korangi 24°48’18.80’’N, 67°12’30.31’E
 during April October 2018. No data available portunid megalops upto
 species level Paksitan, hence this is first attempt examine describe taxonomic
 features in zooplankton samples. This will contribute the
 scientific knowledge taxonomy identification as well be useful for future
 research by taxonomists biologists.