Collected reprints: Abstract 3295

Collected reprints

Abstract

Vanhaeck, P.; Lavens, P.; Sorgeloos, P. (1983). International study on Artemia : 17. Energy consumption in cysts and early larval stages of various geographical strains of Artemia. Ann. Soc. r. Zool. Belg. 113(2): 155-164

Variations in dry weight, caloric content and ash content during cyst hatching and early larval development have been studied for various geographical strains of Artemia. In general, decapsulated cysts contain 30 to 40% more energy than freshly hatched nauplii; for Chaplin Lake and Buenos Aires Artemia this difference amounts to 57%. Ash contents increase as decapsulated cysts hatch into instar I and molt into instar II-III nauplii. Over a 24h larval developmental period individual dry weights and energy content of the nauplii decrease with 16-34% and 22-37% respectively. A small but significant correlation exists between the survival rate of starved nauplii and either the energy content of instar I and instar II-III nauplii or the proportional energy consumption during metabolism from decapsulated cysts to instar II-III nauplii. The potential impact of these results on the use of Artemia in aquaculture hatcheries is discussed.


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