Open AccessUtilização do resíduo sólido de cultivo de camarão em sistema de biofloco para produção da microalga Navicula sp.
Author(s) -
Jéssika Lima de Abreu,
Luís Otávio Brito,
Laenne Bárbara Silva de Moraes,
Débora Louise Barros Silva,
Sílvia Mariana da Silva Barbosa,
Alfredo Olivera Gálvez
Publication year - 2016
Publication title -
boletim do instituto de pesca
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.262
H-Index - 15
eISSN - 1678-2305
pISSN - 0046-9939
DOI - 10.20950/1678-2305.2016v42n4p780
Subject(s) - navicula , horticulture , physics , biology , chemistry , mathematics , botany , algae
The objective of this study was to evaluate the growth of microalgae Navicula sp. using solid residue from a biofloc cultivation system as culture medium compared to Conway medium. Two experiments were conducted with and without the addition of trace metals, in which each experiment had five treatments with three replicates each: R0C100 (100% Conway); R25C75 (25% residue and 75% Conway); R50C50 (50% residue and 50% Conway), R75C25 (75% residue and 25% Conway) e R100C0 (100% residue). The cultures were performed in Erlenmeyer flasks of 1 L for 10 days, with full photoperiod and initial innoculum of 5x104 cells ml-1. Daily counts were carried out to monitor the maximum cell density, doubling time and growth rate. The pH and temperature were measured at the beginning and at the end of the experiments. For statistical analysis were used the Cochran, Shapiro Wilk, ANOVA and Tukey (P <0.05) tests. The pH and temperature remained within the cultivation patterns in the two experiments. The culture medium with shrimp culture biofloc residue had similar result to the Conway medium, and displayed satisfactory for the development of microalgae Navicula sp., highlighting that the presence of trace metals has encouraged the growth of the species.