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Abbreviated Larval Development of the Freshwater Prawn, Magrobrachium Iheringi (Ortmann, 1897) (Decapoda, Palaemonidae), Reared in the Laboratory

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The present paper describes and illustrates the early post-embryonic development of the freshwater prawn Macrobrachium iheringi (Ortmann, 1897) completely. This species presents an abbreviated larval development of the advanced type, consisting of two zoeal stages before metamorphosing to megalopa. Benthic behaviour is already displayed by the newly hatched zoea. Both zoeae and megalopa are lecithotrophic. Live or inert food particles are captured or collected only after the third moult (juvenile stage) when mouthparts and chelipeds become well developed and fully functional.

Affiliations: 1: Departamento dc Zoologia, Instituto de Biociências, Universidade de Sao Paulo, Caixa Postal 11294, CEP 05422-970 Sao Paulo, Brazil; 2: Departamento de Ecologia, Instituto de Biociências, Centro de Biologia Marinha, Universidade de São Paulo, Caixa Postal 11461, CEP 05422-970 São Paulo, Brazil


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