Desenvolvimento de alevinos de trairão (Hoplias lacerdae) na ausência de luz - DOI: 10.4025/actascibiolsci.v28i1.1058

Ana Lúcia Salaro; Ronald Kennedy Luz; Jener Alexandre Sampaio Zuanon; Rodolfo Nardez Sirol; Róberson Sakabe; Wagner Azis Garcia de Araújo; Eduardo Ferri Souto

doi:10.4025/actascibiolsci.v28i1.1058

**Development of trairão (Hoplias lacerdae) fingerlings in darkness** - DOI: 10.4025/actascibiolsci.v28i1.1058

Authors

Ana Lúcia Salaro UFV Author
Ronald Kennedy Luz PUC Author
Jener Alexandre Sampaio Zuanon UFV Author
Rodolfo Nardez Sirol Duke Energy - Chavantes - São Paulo Author
Róberson Sakabe UNESP Author
Wagner Azis Garcia de Araújo UFV Author
Eduardo Ferri Souto Instituto Ambiental Vale do Rio Doce Author

DOI:

https://doi.org/10.4025/actascibiolsci.v28i1.1058

Keywords:

fotoperíodo, trairão, Hoplias lacerdae

Abstract

Sixty-six trairão (Hoplias lacerdae) fingerlings (average weight of 2.0±0.5 g and total length of 5.8±0.2 cm), trained to accept dry rations, were allotted to six 15-L aquariums, with aeration and controlled temperature (24.0±0.5ºC), in a density of 0.7 juveniles/L, aiming to evaluate the effects of darkness on fish productive performance. The treatments consisted of two photoperiods: 12 hours light: 12 hours dark (12L:12D) and 0 hour light: 24 hours dark (0L:24D), with three replicates. Fingerlings were fed ad libitum a commercial extruded diet (42% CP), twice a day. The aquariums were cleaned daily for excrement withdrawal through siphoning, exchanging ¼ total volume. At the end of the experiment (30 days), weight gain, feed:gain ratio and survival and cannibalism rates were evaluated. The results showed that darkness did not affect the productive performance of trairão juveniles

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Author Biography

Ana Lúcia Salaro, UFV

Graduação em Ciências Biológicas pela Universidade Estadual Paulista Júlio de Mesquita Filho (1986), Mestrado em Ciências Biológicas - Ãrea: Zoologia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1992) e Doutorado em Ciências Biológicas - Ãrea: Zoologia pela Universidade Estadual Paulista Júlio de Mesquita Filho (1996). Possui o título de Professor Associado I desde 2006. Atua como professor doutor na Universidade Federal de Viçosa, Viçosa, Minas Gerais. Coordenadora do Setor de Piscicultura e dos Laboratórios de Nutrição e Reprodução de Peixes do Departamento de Biologia Animal da UFV. É parte integrante do corpo de docentes e orientadores do Programa de Pós-Graduação em Biologia Animal, do Departamento de Biologia Animal da UFV. Tem experiência em piscicultura de água doce, atuando principalmente na linhas de Pesquisa de Produção e Nutrição de Peixes. Atua como Relatora dos seguintes Períodicos: Revista Brasileira de Zootecnia / Brasilian Journal of Animal Science, Acta Scientarium - Animal Science, Revista Ceres, Boletim do Instituto de Pesca e Revista Ciência e Agrotecnologia Currículo Lattes

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Published

2008-03-11

Issue

Vol. 28 No. 1 (2006)

Section

Ecology and Limnology

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How to Cite

Development of trairão (Hoplias lacerdae) fingerlings in darkness - DOI: 10.4025/actascibiolsci.v28i1.1058. (2008). Acta Scientiarum. Biological Sciences, 28(1), 47-50. https://doi.org/10.4025/actascibiolsci.v28i1.1058