Communications: Feeding Trials with Juvenile Atlantic Sturgeons Propagated from Wild Broodstock

Abstract

Juvenile Atlantic sturgeons Acipenser oxyrinchus produced by hormone-induced spawning of wild broodstock from the Hudson River, New York, were used in a diet study. Fish fed live Anemia sp. as firstfeeding fry for 35 d were observed to convert readily to formulated diets. At 79 d posthatch, four formulated feeds were offered: sturgeon starter 9304, Biokyowa, Zeigler esocid diet, and Tunison sturgeon starter. At the end of 60 d, fish fed Biokyowa had the greatest growth and best feed conversion (P ^ 0.05). Feed conversions were significantly different between all treatments, indicating wide variability in growth response to the diets tested. Proximate analyses of diets showed Biokyowa highest in protein (59.43%) and dry matter (97.28%).

Effect of visible implant elastomers on the growth, survival and tag retention in juvenile Atlantic sturgeon (Acipenser oxyrinchus ) in laboratory conditions

“…The obtained growth values are in accordance with those obtained by Mohler, Fynn-Aikins and Barrows (1996) during rearing of Atlantic sturgeon in similar thermal and food conditions. The obtained growth values are in accordance with those obtained by Mohler, Fynn-Aikins and Barrows (1996) during rearing of Atlantic sturgeon in similar thermal and food conditions.…”

Laboratory test of suspended sediment effects on short-term survival and swimming performance of juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus, Mitchill, 1815)

“…Three control replicates and four replicates of each of the TSS treatments were arranged randomly using three fish per aquarium (N = 45 fish). The loading density was approximately 2.0 g L −1 , which is within the range of reported stocking densities used for this species and life stage (Mohler et al., , ). The experiment was performed twice in consecutive weeks (N = 90 fish total).…”

Effects of feeding rate on growth performance of white sturgeon (Acipenser transmontanus) larvae

“…16.6%) was reported in Siberian sturgeon larvae (22 days posthatch and 13 days after initiation of feeding) (Gisbert and Williot, 1997). Mortalities of Atlantic (Mohler et al, 1996;Bardi et al, 1998) and lake sturgeon (DiLauro et al, 1998) larvae, however, were much higher than those of white, green, and Siberian sturgeon kept under optimum conditions for the first 4 -5 weeks after initiation of feeding. Differences in larval mortality may have resulted from within and among species differences, environmental (feed and water) conditions, and quality of care and maintenance of larvae, etc.…”