Reproduction and embryonic development in the African freshwater prawn Macrobrachium macrobrachion (Herklots, 1851)

Embryonic development Larvae Crustacean Aquaculture Food protein.

Authors

  • Guillaume Koussovi
    guillaume.koussovi@yahoo.fr
    Ecole d'Aquaculture, Université Nationale d'Agriculture, Porto Novo, République du Bénin.
  • Clément Dogbè Adjahouinou Ecole d'Aquaculture, Université Nationale d'Agriculture, Porto Novo, République du Bénin.
  • Farokh Niass Laboratoire des Sciences Biologiques, Agronomiques et de Modélisation des Systèmes Complexes (LABAM), Université Gaston Berger, Saint-Louis, Sénégal.
  • Papa Madiallacké Diédhiou Laboratoire des Sciences Biologiques, Agronomiques et de Modélisation des Systèmes Complexes (LABAM), Université Gaston Berger, Saint-Louis, Sénégal.
  • Clément Agossou Bonou Laboratoire de Recherche en Biologie Appliquée, Ecole Polytechnique d'Abomey-Calavi, Université d'Abomey-Calavi, Cotonou, Bénin.
  • Elie Montchowui 1Ecole d'Aquaculture, Université Nationale d'Agriculture, Porto Novo, République du Bénin.
May 28, 2021

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The current study aimed to determine parameters and conditions for successful reproduction of Macrobrachium macrobrachion (Herklots, 1851) in a controlled medium and describing its embryonic development. A total of 122 adult specimens were collected from the delta of Ouémé River and stored in polyethylene tanks with 1:2 male-female sex ratio. This broodstock was fed on pelleted food (Biomar Efico) once a day. For the embryogeny monitoring, eggs were sampled each hour through the first two days after spawning and then every 2 hours till hatching. Spawning happened at a mean temperature, dissolved oxygen concentration and pH of 27.80±0.56°C, 5.83±0.45 mg/L and 7.41±0.34, respectively. The eggs incubation meantime was 12±1 days with nine main embryonic development stages. Hatching lasted on the average 21.00±1.94 h and led to larvae with a mean size of 2.30±0.90 mm. Mean fecundity was 13062.4±5489.93 eggs and 14715.2±6108 eggs, respectively for the first and second seasons with a highly significant difference between them. The best hatching rates were obtained with salinities equal to 2 and 4"°. The results constitute the first database for larval breeding of M. macrobrachion species.