Data/hora: 06/06/2024 15:47:52

Provedor de dados: | 65
País: | Brazil
Título: | Effect of stocking density on the growth and survival of Anomalocardia brasiliana (Gmelin, 1791) (Bivalvia: Veneridae) post-larvae
Autores: | Oliveira,Isabela Bacalhau de; Lavander,Henrique David; Lima,Priscilla Celes Maciel de; Oliveira,Carlos Yure Barbosa de; Dantas,Danielli Matias de Macedo; Gálvez,Alfredo Olivera.
Data: | 2019-01-01
Ano: | 2019
Palavras-chave: | Aquaculture; Clams; Larviculture; Microalgae; West Indian pointed venus.
Resumo: | ABSTRACT:  Anomalocardia brasiliana post-larvae were cultured for 28 days to evaluate the effect of stocking density on their growth and survival rate. Three stocking densities were tested 40, 80 and 160 post-larvae cm-2, in experimental units (2-L) with static cultivation system and total water renewal at each 48 hours. The experimental design was completely randomized with three treatments and three repetitions each. Stocking density of 40 post-larvae cm-2 reached 1 mm length within 24 days, while only 18% of the post-larvae at density of 80 post-larvae cm-2 reached 1 mm length in the same time. The density of 40 post-larvae cm-2 had the highest specific growth rate, 4.98±0.08% day-1. The survival rates of post-larvae at lower densities were significantly higher (53.24±4.60% and 52.95±3.32%, on 40 and 80 post-larvae cm-2, respectively) compared to higher stocking density (31.54±0.70%). In the cultivation of A. brasiliana post-larvae, stocking density must be managed during growth. The density of 160 post-larvae cm-2 can only be used until the post-larvae reach 600μm in length, then they should be at 40 post-larvae cm-2 density to keep the maximum daily growth rate.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001200652
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20190420
Formato: | text/html
Fonte: | Ciência Rural  v.49 n.12 2019
Fonte: | info:eu-repo/semantics/openAccess