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Paper Information

Journal:   JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY   WINTER 2007 , Volume 8 , Number 4 (31); Page(s) 59 To 66.
 
Paper: 

THE EFFECTS OF TEMPERATURE ON HATCHABILITY AND NUTRITIONAL VALUE OF ARTEMIA URMIANA'S NAUPLII

 
 
Author(s):  TAYEBI L.*, SEYFABADI J., ABEDIAN A.A.M., AGH N.
 
* FACULTY OF NATURAL RESOURCES & MARINE SCIENCES, TARBIAT MODARRES UNIVERSITY
 
Abstract: 

In this study, hatchability and nutritional value of Artemia urmiana's Nauplii, and the effects of temperature on these factors were evaluated. The experiments were conducted factorially with two levels of temperatures (25 and 30oc) in triplicate random groups. Hatchability of cysts at these temperatures were determined. To determine the biochemical composition of their body, Naupliies were hatched in five-liter bottles and harvested after 24 hours. Dry weight, protein, lipid, carbohydrate, ash, caloric content, and fatty acid compositions of Nauplii's were determined at these two temperatures. The individual dry weight and the individual biochemical composition of Nauplii were also determined.
The results showed that the hatching percentage and hatching efficiency increased with an increase in both temperature and time. For the hatching percentage, the increase was significant (p<0.05). The nutritional value of Naupliies decreased slightly at higher temperatures in most cases, but the change was not found significant (p>0.05).
Based on the results of the study, a temperature of 300 c is recommended for cysts' hatching; at such a temperature, not only hatchability increases, but the nutritional value is also preserved.

 
Keyword(s): ARTEMIA URMIANA, TEMPERATURE, HATCHABILITY, NUTRITIONAL VALUE
 
References: 
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