Yolk resorption and larval development in the brackish river prawn Macrobrachium macrobrachion under laboratory conditions: Perspectives for aquaculture

KOUSSOVI G; HOUSSOU AM; ORÉS DAVES DA; NIASS F; BONOU CA; LOPEZ GRECO LS; MONTCHOWUI E

JOURNAL OF THE WORLD AQUACULTURE SOCIETY

WILEY-BLACKWELL PUBLISHING, INC

Lugar: Londres; Año: 2023

0893-8849

Macrobrachium macrobrachion is an African native brackishriver prawn with a high commercial value. Currently, thereis little information on the post-larval production of thisspecies. Two experiments were conducted in the laboratoryto develop production techniques for this species. The firstexperiment analyzed the duration of yolk resorption andthe second described the larval stages. Yolk resorption wasstudied in 240 newly hatched larvae for 24 h based on thereduction in yolk area over time. For larval developmentstages, six breeding tanks containing 100 L with a densityof 50 larvae/L were used. Larvae were fed a combination ofArtemia nauplii, Brachionusplicatilis, and pelleted food(Larviva ProStart, Biomar Efico). The results have shownthat the area of yolk reserves varied significantly in thehours after hatching. At 14 h after hatching, each larvaresorbed approximately 85% of its yolk reserve, and at 18 hafter hatching, each of them still had approximately 6.1%.Twelve larval stages were identified and described in threecritical stages. M. macrobrachion larvae are lecithotrophicand need to start exogenous feeding at 14 h at the earliestand 18 h at the latest after hatching. These results are thefirst to highlight the potential for mass production of brackish river prawns.