Influence of food type, amount, and frequencies on the larviculture of pacamã catfish Lophiosilurus alexandri

ABSTRACT

This study assessed the performance of L. alexandri postlarvae (2 days after hatching) with different diets (Artemia and Panagrellus redivivus), food amounts (C₃₀₀-C₅₀₀-C₇₀₀), and feeding frequencies (F₁-F₃-F₆) in two experiments lasting 10 days. The best performing food type, Artemia and Artemia with P. redivivus, presented the highest survival rates as well as fish with the greatest weight, length, and specific growth rate (SGR). In the second experiment with Artemia, the weight, length, and SGR presented significant differences, increasing with higher amounts of prey. The best performance was obtained from a daily diet (F₁) with the greatest amount of prey (C₇₀₀).

KEYWORDS:

• Aquaculture production
• larvae
• specific growth rate
• survival

Acknowledgments

We thank Daniel Santana for preparation of Figure 1 and the anonymous reviewers for their valuable comments.

Funding

We would like to thank the Universidade Federal de Sergipe, Programa de Pós-Graduação em Ecologia e Conservação UFS, CODEVASF/CERAQUA, and CNPq (#461008/2014-9) for logistic support and project funding and FAPITEC for the scholarship granted (PGSC). This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico [#461008/2014-9].

Additional information

Funding

We would like to thank the Universidade Federal de Sergipe, Programa de Pós-Graduação em Ecologia e Conservação UFS, CODEVASF/CERAQUA, and CNPq (#461008/2014-9) for logistic support and project funding and FAPITEC for the scholarship granted (PGSC). This work was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico [#461008/2014-9].