Revista Brasileira de Zootecnia | |
Larviculture of Yellow Mandi Pimelodus maculatus Lacépède, 1803 (Siluriformes: Pimelodidae) at Different Stocking Densities during the First Days of Life | |
Luz, Ronald Kennedy1  Zaniboni Filho, Evoy2  | |
[1] UFSC | |
关键词: stocking density; larviculture; yellow mandi; Pimelodus maculatus; post-larvae   IntroduçãoO mandi-amarelo (Pimelodus maculatus); espécie de ampla distribuição geográfica e de grandes variações cromáticas e até estruturais (Santos; 1954); pode ser encontrado na Amazônia; Guianas; Venezuela; Peru; Bolívia; Paraguai; Argentina; Bacia do Paraná; do Prata; Rio Uruguai e Rio Iguaçu (Godoy; 1987); | |
DOI : 10.1590/S1516-35982002000300004 | |
学科分类:兽医学 | |
来源: Universidade Federal de Vicosa | |
【 摘 要 】
- The effect of stocking density on the larviculture of Pimelodus maculatus post-larvae was evaluated. The experiment was conducted at the Sao Carlos hatchery (EPISCar), SC. Post-larvae were daily fed zooplankton at the rate of 300 organisms/post-larvae/day at the following densities: T1. 5 post-larvae/L; T2. 15 post-larvae/L; and T3. 30 post-larvae/L. Survival rates were evaluated on the third and fifth day of the experiment. After three days, density did not affect survival rates; however, on the fifth day survival rate was higher for the lowest density. Average survival rates at the end of the experiment were 35.6, 28.9 and 20.6% for T1, T2 and T3, respectively. Post-larvae average weight was also higher at the lowest density, but average length did not differ significantly among treatments. At density of 30 post-larvae/L, post-larvae survival rate was the lowest, but final productivity was the highest.
【 授权许可】
CC BY-NC
【 预 览 】
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RO201911300704919ZK.pdf | 185KB | download |