Relationship of Density, Light Intensity, Photoperiod to Hatching Rate of Artemia Resting Eggs

Hatching of cladoceran resting eggs: temperature and photoperiod

JOCHEN VANDEKERKHOVE,* STEVEN DECLERCK,* LUC BRENDONCK,* JOSÉ MARIA CONDE-PORCUNA, † ERIK JEPPESEN ‡, § AND LUC DE MEESTER* *Laboratory of Aquatic Ecology, Katholieke Universiteit Leuven, Ch. de Bériotstraat, Leuven, Belgium Instituto del Agua, Universidad de Granada, Ramón y Cajal 4 (edif. Fray Luis de Granada), Granada, Spain Department of Freshwater Ecology, The National Environmental Resear...

The interaction of light intensity and pH on the hatching performance of Artemia franciscana in laboratory condition

Given the importance of Artemia as the most live feed used in the aquaculture industry, the interaction between light intensity and pH was investigated in two levels of light 1000 and 2000 lux, and three levels of pH 8, 9 and 10 on the percentage of hatching, percentage of umbrella stage and percentage of unhatched cyst on Artemia franciscana. To determine the percentage of hatching, percentage...

Effect of Initial Ozonation on the Hatching Rate of Artemia Cysts

In an experiment to investigate the bio-excitatory effect of ozone gas on the hatching of artemia cysts, it was found that limited blown ozone gas has an effect on significant increasing of the hatching time of artemia cysts, though artemia cycsts are very resistant to ozone. The cysts hatching were done intitialy using 50, 35, 15, 10 and 5 mg of ozone blowing into one-liter containers that las...

Integrated effects of photoperiod and light intensity on some reproductive parameters of Artemia parthenogenetica during consecutive weeks in semi-intensive culture system

This study investigated the integrated effects of two photoperiods (16:08 and 08:16 h) along with three light intensities (3000, 15000 and 50000 lux) on some reproductive parameters and broodstock survival rates of Artemia parthenogenetica in six treatments in a completely randomized factorial design in culture system until death. Two-way ANOVA analysis revealed significant differences in total...

Effect of photoperiod and light intensity on bolting and flowering in celery