Crescimento de alevinos de jundiá, Rhamdia quelen (Pisces, Pimelodidae), em diferentes concentrações de oxigênio dissolvido - DOI: 10.4025/actascibiolsci.v28i1.1057

Giancarlo Maffezzolli; Alex Pires de Oliveira Nuñer

doi:10.4025/actascibiolsci.v28i1.1057

Growth of silver catfish Rhamdia quelen (Pisces, Pimelodidae) fingerlings in different dissolved oxygen concentrations - DOI: 10.4025/actascibiolsci.v28i1.1057

Giancarlo Maffezzolli UFSC
Alex Pires de Oliveira Nuñer Universidade Federal de Santa Catarina

DOI: https://doi.org/10.4025/actascibiolsci.v28i1.1057

Abstract

This study's aim was evaluate the growth of silver catfish (Rhamdia quelen) fingerlings on five dissolved oxygen concentrations: 1,3 (T1), 2,4 (T2), 3,7 (T3), 5,4 (T4) and 7,5 mg O₂/L (T5). A completely random design experiment with three repetitions was used and the experiment was carried out during 25 days. Fingerlings were distributed in circular, 150-L fiberglass tanks kept in darkness, endowed with mechanic and biological filters and water renewal, at a stocking density of 34 individuals/tank. Survival was lower at the extreme tested levels (T1 and T5). Better growth in weight, length and food conversion were found at increasing oxygen concentrations. Even at the lowest oxygen concentration (T1) fingerlings showed growth increase. The best effects on silver catfish fingerlings development was observed at T4

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Author Biography

Alex Pires de Oliveira Nuñer, Universidade Federal de Santa Catarina

Alex Pires de Oliveira Nuñer formou-se em Agronomia pela Universidade Federal de Lavras (1985), e concluiu Mestrado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (1991) e Doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (1997). Desde 1999 é professor da Universidade Federal de Santa Catarina, lotado no Departamento de Aqüicultura do Centro de Ciências Agrárias. Atua na área de Recursos Pesqueiros e Engenharia de Pesca, com estudos ligados ao Manejo e à Conservação de Peixes de Água Doce, ao desenvolvimento de Tecnologia de Cultivo de Peixes, à Limnologia e à Telemetria de Peixes. Currículo Lattes

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Published

2008-03-11

How to Cite

Maffezzolli, G., & Nuñer, A. P. de O. (2008). Growth of silver catfish Rhamdia quelen (Pisces, Pimelodidae) fingerlings in different dissolved oxygen concentrations - DOI: 10.4025/actascibiolsci.v28i1.1057. Acta Scientiarum. Biological Sciences, 28(1), 41-45. https://doi.org/10.4025/actascibiolsci.v28i1.1057

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Issue

Vol 28 No 1 (2006)

Section

Ecology and Limnology

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