Survival rate of Macrobrachium acanthurus (Caridea: Palemonidae) larvae in laboratory conditions under different salinities and diets

• Autor(a) principal: Rodrigues, Maria Maschio
• Data de Publicação: 2018
• Outros Autores: De Almeida, Luis Carlos Ferreira [UNESP], Bertini, Giovana [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/228650
• topic: Artemia; Camarão-canela; Cinnamon river prawn; Dieta inerte; Inanição; Inert diet; Larvas de camarão; Prawn larvae; Starvation

Macrobrachium acanthurus is a native species from Brazil with a considerable economic interest, but there is no technology for its cultivation yet. Thus, the present work is aimed to determine the salinity conditions and the most effective diet for larval development. Zoea I were submitted to two experiments: the first one evaluated the effects of different salinities on survival time in starving larvae; the second experiment larvae were reared using five different diets (Artemia, microalgae, Artemia + microalgae, Artemia + inert diet and inert diet) using the salinity that showed higher survival period from the first experimental setting. Survival curves were calculated according to the Kaplan-Meier method and the multivariate Cox regression checked the effect of food types on larval survival rate. The lowest survival period occurred at a salinity of 0 and 33 gL-1 and the highest at a salinity of 15 gL-1. Artemia and Artemia + inert diet were the most effective diets for larval development and survival, increasing by 281 and 199 times, respectively, the chances of survival compared to the inert diet alone. The results indicate that 15 gL-1 salinity and Artemia diet should be considered for future larviculture of M. acanthurus.