Sobrevivência e crescimento larval do pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), em função de três densidades de estocagem em laboratório

Cristiane Machado López; Edson Vieira Sampaio

doi:10.4025/actascibiolsci.v22i0.2934

Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities

Authors

Cristiane Machado López CODEVASF Author
Edson Vieira Sampaio CODEVASF Author

DOI:

https://doi.org/10.4025/actascibiolsci.v22i0.2934

Keywords:

pacamã, larvicultura, densidade de estocagem, sobrevivência, alimentação

Abstract

The aim of this study was to evaluate the effect of three stocking densities on survival and growth of larval pacamã. The experiment was carried out in 12 flow-through systems of 0.43m², with three distinct densities and four replicates each: 150 larvae/system (treatment 01), 250 larvae/system (treatment 02), and 500 larvae/system (treatment 03).The larvae were fed with zooplankton, enumerated and measured for length. With regard to survival pecentage, the treatments gave the following results: 01 - 60%, 02 - 49% and 03 - 37%. Wilcoxon’s Rank Sum Test showed a statistical difference between treatments 01 and 03 (P < 0.05). No such difference was found with regard to larval length, or physical and chemical features of water between the treatments. The results indicate a negative relationship between stocking density and larvae survival rate

Downloads

Download data is not yet available.

Author Biography

Cristiane Machado López, CODEVASF

Graduação em Ciências Biológicas, Mestrado em Aquicultura pelo Centro de Aquicultura da UNESP. Tem experiência na área de Ecologia, com ênfase em Limnologia, atuando principalmente nos seguintes temas: comunidade zooplanctônica e perifítica, e na Aquicultura com produção de larvas e juvenis de peixes nativos Currículo Lattes

Downloads

PDF (Portuguese)

Published

2008-05-09

Issue

Vol. 22 (2000)

Section

Biology Sciences

License

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

Read this link for further information on how to use CC BY 4.0 properly.

How to Cite

Survival and growth of larval pacamã Lophiosilurus alexandri Steindachner 1876 (Siluriformes, Pimelodidae), in three laboratory stocking densities. (2008). Acta Scientiarum. Biological Sciences, 22, 491-494. https://doi.org/10.4025/actascibiolsci.v22i0.2934