Evaluation of quality variation of dried cysts of Artemia from Urmia lake using layer drying method
Subject Areas : New Technologies in Aquaculture Development
Keywords: Urmia Lake, Keywords: Artemia cysts, Layer drying, Hatching percentage and hatching efficiency,
Abstract :
The cysts of Artemia can keep their embryonic life at suitable ecological condition due to its special biological characteristics. The presence of humidity in cysts can be considered as a factor for increasing metabolic activities and decreasing hatching percentage of cysts. In order to minimize metabolic activities of embryos, the cysts must be dehydrated through drying methods. Therefore, it's beneficial to package dried cysts in vaccum conditions and very low temperatures. This study was concluded to evaluate qualitative variations of Artemia cysts from Urmia Lake which has been dried by layer drying method. A batch of Artemia cysts from Urmia Lake were chosen randomly, purified and dehydrated according to Lavens & Sorgeloos 1996 and dried in warm room at different temperatures and times to record their hatching percentage and hatching efficiency during 15 months. The results of one-way ANOVA showed a significant difference in hatching results between each various drying times and temperatures (P<0.05). Although Artemia cysts from Urmia Lake enjoy a high hatching percentage at 28, 30, 34ºC and also drying times of 3 and 4 hours for them have a high hatching efficiency. It's concluded that 34 ºC for 4 hours is the most suitable conditions for drying of Artemia cysts from Urmia lake.
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