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High stocking density during larviculture and effect of size and diet on production of juvenile Lophiosilurus alexandri Steindachner, 1876 (Siluriformes: Pseudopimelodidae)

Cordeiro, N. I. S ; Costa, D. C ; S e Silva, W ; Takata, R ; Miranda‐Filho, K. C ; Luz, R. K

Journal of applied ichthyology, 2016-02, Vol.32 (1), p.61-66 [Periódico revisado por pares]

Berlin: Blackwell Wissenschafts-Verlag

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  • Título:
    High stocking density during larviculture and effect of size and diet on production of juvenile Lophiosilurus alexandri Steindachner, 1876 (Siluriformes: Pseudopimelodidae)
  • Autor: Cordeiro, N. I. S ; Costa, D. C ; S e Silva, W ; Takata, R ; Miranda‐Filho, K. C ; Luz, R. K
  • Assuntos: animal growth ; Artemia ; biomass ; diet ; juveniles ; Lophiosilurus alexandri ; nauplii ; pellets ; rearing ; Siluriformes ; stocking rate ; water temperature
  • É parte de: Journal of applied ichthyology, 2016-02, Vol.32 (1), p.61-66
  • Notas: http://dx.doi.org/10.1111/jai.12963
    Capes-REUNI
    Ministry of Fisheries and Aquaculture - MPA
    MCT/CNPq/MPA
    ArticleID:JAI12963
    istex:937B510338ED419AC7B36989CDCB9B93BD7C3E1B
    CNPq - No. 305913/2012-3; No. 305577/2013-1
    FAPEMIG
    ark:/67375/WNG-2WF4HRLD-4
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Different stocking densities were investigated in larviculture and feeding of Lophiosilurus alexandri, as well as analyses of the effects on juveniles of two size‐classes and two different commercial formulated diets. The first experiment was two‐phased: (a) larvae stocked at densities of 60, 120, 180, 240, and 300 larvae L⁻¹ fed with Artemia nauplii and reared for 15 days; (b) in phase 2, densities of 5, 10, 15, 30, and 40 juveniles L⁻¹ were evaluated during feed training (20 days). Mean water temperature in both phases was 28°C. In the first phase of experiment 1, the different stocking densities did not affect fish growth or survival. In phase 2, growth was similar in all densities; however, survival was lower at higher densities. The increased density provided a rise in biomass and number of individuals produced in both phases. In the second experiment, two size‐classes of feed‐trained juveniles (30.22 ± 1.84 and 34.66 ± 2.41 mm) were given pellets of two different diameters (1.2 and 2.6 mm) for 20 days. The largest juveniles fed the 1.2 mm inert diet had higher final weights and lengths. Larviculture and feed training of L. alexandri can thus be performed successfully at high stocking densities of 300 larvae L⁻¹ during the first 15 days of feeding, and at densities of up to 40 juveniles L⁻¹ during the 20 days of feed training, respectively.
  • Editor: Berlin: Blackwell Wissenschafts-Verlag
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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