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| Braun, Neiva; Universidade Federal de Santa Catarina; Lima, Ronaldo Lima de; Universidade Federal de Santa Catarina; Baldisserotto, Bernardo; Universidade Federal de Santa Maria; Dafre, Alcir Luiz; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina. |
| This study evaluated the biochemical changes associated to successive captures of Salminus brasiliensis reared at different stocking densities. The experiment was conducted in tanks with a capacity of 1,000 L, connected to a recirculating system with temperature control and continuous aeration. Fish were stocked at densities of 30, 150 and 300 fish m-3 and the successive catches were applied at the end of the experimental period of 80 days. The biochemical changes were evaluated at the end of the trial through the parameters: hematocrit, hemoglobin, glucose and lactate in plasma and Na+, K+ and Cl- and Ca2+ in the gills. The concentration of glucose increased with the increase of stocking density as also registered for lactate concentration, except for... |
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Palavras-chave: Zoologia; Fisiologia; Bioquímica dourado; Hematocrit; Hemoglobin; Glucose; Lactate; Ions. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/13055 |
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| Maffezzolli, Giancarlo; UFSC; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina. |
| O objetivo deste estudo foi avaliar o crescimento de alevinos de jundiá, Rhamdia quelen, em 5 concentrações de oxigênio dissolvido: 1,3 (T1), 2,4 (T2), 3,7 (T3), 5,4 (T4) e 7,5 mg O2/L (T5). O estudo utilizou o modelo experimental inteiramente ao acaso com 3 repetições e foi conduzido por 25 dias. Os alevinos foram distribuídos em tanques circulares de fibra de vidro de 150 L mantidos na escuridão e dotados de aeração mecânica, filtro biológico e renovação de água, na densidade de 34 indivíduos/tanque. A sobrevivência foi menor nos extremos testados (T1 e T5). Maior crescimento em peso e em comprimento e melhor conversão alimentar foram obtidos com o aumento da concentração de oxigênio dissolvido. Os alevinos de jundiá apresentaram incremento em peso,... |
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Palavras-chave: 2.05.00.00-9 Ecologia Rhamdia quelen; Jundiá; Oxigênio dissolvido; Crescimento; Alevinos 2.05.00.00-9 Ecologia. |
| Ano: 2006 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1057 |
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| Lopes, Carolina Antonieta; Universidade Federal de Santa Catarina; Garcia, Valquíria; Universidade Federal de Santa Catarina; Reynalte-Tataje, David Augusto; Universidade Federal de Santa Catarina; Zaniboni-Filho, Evoy; Universidade Federal de Santa Catarina; Nuñer, Alex Pires de Oliveira; Universidade Federal de Santa Catarina. |
| This study aimed to evaluate the temporal distribution of fish eggs and larvae in the Forquilha river (upper Uruguay river/Brazil) and its relationship with environmental variables. Ichthyoplankton and abiotic factors were sampled from September 2006 to August 2007. At the laboratory, samples were sorted and larvae were identified to the lowest possible taxonomic level. For data analysis we applied One-way Anova, Tukey’s test, Pearson correlation and PCA. In this study 200 eggs and 308 larvae were collected, showing differences in the temporal distribution and influence of abiotic factors. Larvae were identified in all stages of development, being distributed in three order and eight families. These results point that the lower portion of the Forquilha... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggs and larvae; Fish; Reproduction; Abiotic variables. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/17993 |
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