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Quantification of muscle condition using digital image analysis in Dicentrarchus labrax larvae, and relationship with survival
Catalán, I.A.; Olivar, M.P. (2002). Quantification of muscle condition using digital image analysis in Dicentrarchus labrax larvae, and relationship with survival. J. Mar. Biol. Ass. U.K. 82(4): 649-654
In: Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge. ISSN 0025-3154, more
Peer reviewed article  

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Keywords
    Dicentrarchus labrax (Linnaeus, 1758) [WoRMS]; Marine

Authors  Top 
  • Catalán, I.A.
  • Olivar, M.P.

Abstract
    Digital image analysis was applied to quantify the degradation of muscle in sea bass Dicentrarchus labrax (Pisces: Moronidae) larvae. The measure obtained was the percentage muscle fibre separation (MFS). This measurement was compared to that obtained through classical scoring. The percentage MFS classified correctly a larger number of larvae from different feeding treatments (Fed, Starved and Delayed treatments) and paralleled nutritional condition, both by age and by size. It also yielded a significant correlation with the survival of the Starved larvae. The onset of the mass mortality of Starved larvae was used to define a critical value (Mmax) of 6% MFS which would severely handicap survival. We regard MFS as a useful contribution to the determination of condition in fish larvae. It is a relatively fast quantitative method, and its use would reduce the bias caused by discrete grading (scores) and by differences in individual expertise.

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