نوع مقاله : فیزیولوژی (جانوری)
نویسندگان
1 موسسه تحقیقات علوم شیلاتی کشور، تهران، صندوق پستی: 15745-133
2 مرکز تحقیقات آبزیان اب های شور بافق، موسسه تحقیقات شیلات ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this study، the effect of vitamin C enrichment on its accumulation in Artemia nauplii and Persian sturgeon fish larvae and also survival rate of fish larvae when they exposed at salinity stress، were investigated. Artemia nauplii were hatched and enriched with different percentage of vitamin C (10، 20 and 30%) in form of Ascorbyl palmitate، emulsified in lecithin during 12 and 24h، overall 6 treatments each with 3 replications and were given to fish larvae، 250ind. /25L tank with initial DW of 4. 3mg for 15 experimental days. At the end of experiment، a numbers of fish larvae were selected randomly and exposed to different salinities (6، 12 and 18ppt) with using the Caspian Sea water، diluted with distilled water and concentrated with excess salt، for different hours (1، 2، 4، 8، 24، 36 up to 72h). Then، mortality percentages were computed. The vitamin C analysis of treatments with HPLC showed the accumulation it in Artemia nauplii and fish larvae were significantly compared with control groups (P0. 05). We conducted that the possibility of releasing the enriched Persian sturgeon larvae with vitamin C to the Caspian Sea directly can reduced mortality of fishes more than those that released to rivers and also increase larvae survival rate.
کلیدواژهها [English]
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