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Title: Slightly salinized water enhances the growth and survival of Arapaima gigas larvae
Authors: Araújo da Silva, Thyssia Bomfim
Epifânio, Cláudia Maiza Fernandes
Dantas, Francisco de Matos
Rocha, Thayssa Larrana Pinto da
Gonçalves, Ligia Uribe
Dairiki, Jony K.
Keywords: Food Supply
Freshwater Ecosystem
Length-weight Relationship
Stocking Density
Arapaima Gigas
Issue Date: 2019
metadata.dc.publisher.journal: Aquaculture Research
metadata.dc.relation.ispartof: Volume 50, Número 3, Pags. 951-956
Abstract: The aim of this study was to evaluate the survival and growth of Arapaima gigas larvae reared in slightly salinized water. Pirarucu larvae (183.1 ± 41.2 mg and 3.4 ± 0.3 cm) were stocked in PVC tanks (20 L; n = 4; 40 larvae per tank) in a static system. A. gigas larvae were reared in increasing levels of salinized water (0, 1, 2, 3 and 4‰) for a period of 15 days. Fish were fed six times a day with Artemia nauplii (2,900 nauplii per larvae per meal in the beginning). The salinized water increased by at least four times the Artemia nauplii lifespan, which prolonged the time of live food supply to Arapaima larvae. Pirarucu larvae kept in freshwater presented the lowest values in weight gain, final weight and survival. Larvae reared in water with 4‰ of salinized water showed the highest final weight. Slightly salinized water enhances the growth and survival of A. gigas larvae and it can be a simple practice with low cost that can be applied in the routine of pirarucu larviculture. © 2019 John Wiley & Sons Ltd
metadata.dc.identifier.doi: 10.1111/are.13970
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