17 research outputs found
Effect of a constant magnetic field on water quality and rearing of European sheatfish Silurus glanis L. larvae
Effects of incubation temperature on development and yolk sac conversion efficiencies of spotted wolffish (Anarhichas minor Olafsen) embryos until hatch
Laboratory-based reproduction success of ruffe, Gymnocephalus cernuus (L.), in brackish water is determined by maternal properties
A simulation model for the metabolism of yolk sac larvae of the African catfish, Clarias gariepinus (Burchell)
Biochemical changes during embryogenesis of the Pacific halibut, Hippoglossus stenolepis (Schmidt)
Changes in Composition During Embryo Development of the Gulper Shark, Centrophorus Granulosus (Elasmobranchii, Centrophoridae): An Assessment of Maternal-embryonic Nutritional Relationships
Eritrograma de hÃbridos de surubim (Pseudoplatystoma reticulatum X P. coruscans) mantidos em diferentes densidades de estocagem
Larval development of hoplias cf. Lacerdae (Pisces: Erythrinidae) and delayed initial feeding effects
Larval development of Hoplias cf. lacerdae was studied under laboratory conditions. After hatching, ontogenetic changes were recorded on food-deprived larvae in 12-hour intervals. Mouth opening occurred after 2.5 days and notochord terminated flexure in 6.5 days. Notochord length increased at a constant rate until complete yolk absorption (13,5 days). Larval dry weight and body height diminished gradually up to 21 days after hatching, when all starved larvae died. Every 12 hours after yolk absorption, groups of larvae (n=15), were separeted, and fed with Artemia nauplii for 10 days. The point-of-no-return (when 50% of larvae were unable to feed or to assimilate ingested food after delayed feeding), was not apparent in this species