In brief, these considerations can be summarised by one practical
questioning: “should we feed the fish or the tank?” which in turn,
requires examining the interactions between fish density, feeding
level and prey density (per volume unit), and their consequences on
fish survival, growth, size heterogeneity and food conversion. The
present study was designed to investigate this issue in larvae of the
catfish Pangasianodon hypophthalmus (Sauvage, 1878) (Siluriformes,
Pangasiidae; formerly Pangasius sutchi or Pangasius hypophthalmus).
Pangasiid production in aquaculture in 2007 exceeded 1 million tons
per year (Lazard et al., 2009). It relies essentially on the culture of P.
hypophthalmus, which originates from the Mekong and Tchao Praya
river basins, but has been introduced throughout South-East Asia.
Larvae of this species reputedly exhibit an intense cannibalistic
behaviour at an early age (about 36 h after hatching; Subagja et al.,
1999), so the issues of fish density and feeding strategy are crucial to
define appropriate rearing strategies in respect to local production
constraints in terms of fish survival, growth and food conversion
In brief, these considerations can be summarised by one practicalquestioning: “should we feed the fish or the tank?” which in turn,requires examining the interactions between fish density, feedinglevel and prey density (per volume unit), and their consequences onfish survival, growth, size heterogeneity and food conversion. Thepresent study was designed to investigate this issue in larvae of thecatfish Pangasianodon hypophthalmus (Sauvage, 1878) (Siluriformes,Pangasiidae; formerly Pangasius sutchi or Pangasius hypophthalmus).Pangasiid production in aquaculture in 2007 exceeded 1 million tonsper year (Lazard et al., 2009). It relies essentially on the culture of P.hypophthalmus, which originates from the Mekong and Tchao Prayariver basins, but has been introduced throughout South-East Asia.Larvae of this species reputedly exhibit an intense cannibalisticbehaviour at an early age (about 36 h after hatching; Subagja et al.,1999), so the issues of fish density and feeding strategy are crucial todefine appropriate rearing strategies in respect to local productionconstraints in terms of fish survival, growth and food conversion
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