Title of article :
Nutrient distribution in different tissues of subadult Dabry’s sturgeon, Acipenser dabryanus (Duméril, 1869
Author/Authors :
Qiao X. Key Laboratory of Freshwater Biodiversity Conservation - Ministry of Agriculture of China - Yangtze River Fisheries Research Institute - Chinese Academy of Fisheries Science - Wuhan, China , Leng X. Key Laboratory of Freshwater Biodiversity Conservation - Ministry of Agriculture of China - Yangtze River Fisheries Research Institute - Chinese Academy of Fisheries Science - Wuhan, China , Du H. Key Laboratory of Freshwater Biodiversity Conservation - Ministry of Agriculture of China - Yangtze River Fisheries Research Institute - Chinese Academy of Fisheries Science - Wuhan, China , Wu J. Key Laboratory of Freshwater Biodiversity Conservation - Ministry of Agriculture of China - Yangtze River Fisheries Research Institute - Chinese Academy of Fisheries Science - Wuhan, China , Wei Q. Key Laboratory of Freshwater Biodiversity Conservation - Ministry of Agriculture of China - Yangtze River Fisheries Research Institute - Chinese Academy of Fisheries Science - Wuhan, China , Zhou H. Key Laboratory of Freshwater Animal Breeding - Ministry of Agriculture of China - Freshwater Aquaculture Collaborative Innovation Center of Hubei Province - Hubei Provincial Engineering Laboratory for Pond Aquaculture - Fisheries College - Huazhong Agricultural University - Wuhan 430070, China , He Sh. Key Laboratory of Freshwater Animal Breeding - Ministry of Agriculture of China - Freshwater Aquaculture Collaborative Innovation Center of Hubei Province - Hubei Provincial Engineering Laboratory for Pond Aquaculture - Fisheries College - Huazhong Agricultural University - Wuhan 430070, China , Liang X. Key Laboratory of Freshwater Animal Breeding - Ministry of Agriculture of China - Freshwater Aquaculture Collaborative Innovation Center of Hubei Province - Hubei Provincial Engineering Laboratory for Pond Aquaculture - Fisheries College - Huazhong Agricultural University - Wuhan 430070, China , Tan Q. Key Laboratory of Freshwater Animal Breeding - Ministry of Agriculture of China - Freshwater Aquaculture Collaborative Innovation Center of Hubei Province - Hubei Provincial Engineering Laboratory for Pond Aquaculture - Fisheries College - Huazhong Agricultural University - Wuhan 430070, China
Abstract :
Low fertilization rate and hatchability of cultured Dabry’s sturgeon, Acipenser
dabryanus, are bottlenecks to the fish species protection, while adequate nutrients in
body of subadult fish are crucial to successful reproduction. The present study was
conducted to preliminarily understand the nutritional status of male and female
subadults by characterizing the proximate composition, fatty acid and amino acid
profiles in muscle, liver and gonad of farmed Dabry’s sturgeon with gonads at stage II
through chemical analysis, gas chromatograph and high pressure liquid
chromatography. The results showed that lipid content (47.24%) in gonad of females
was significantly higher than those in liver (29.26%) and muscle (7.72%), while lipid
content (39.43%) in liver of males was significantly higher than those in gonad
(18.40%) and muscle (6.68%) (p<0.05). The protein content (5.81%) in gonad of
females was significantly lower than those in liver (10.77%) and muscle (22.82), while
protein contents in gonad (9.23%) and liver (8.72%) of males were significantly lower
than that in muscle (20.83%) (p<0.05). The contents of docosahexaenoic acid (DHA)
and eicosapentaenoic acid (EPA) in gonad and muscle were the most abundant n-3
polyunsaturated fatty acids (n-3 PUFAs). The content of arachidonic acid (ARA,
0.65%) in gonad of females was significantly higher (0.33%) than that in gonad of
males (p<0.05). The results suggest that lipid and highly unsaturated fatty acids, such as
ARA, EPA and DHA are accumulated in the gonads at stage II, which may play pivotal
roles in gonad development.
Keywords :
Muscle , Liver , Gonad , Nutrients , Dabry’s sturgeon
Journal title :
Iranian Journal of Fisheries Sciences
