Fisheries Research Articles
The performance of larval Seriola lalandi (Valenciennes, 1833) is affected by the taurine content of the Artemia on which they are fed
Document Type
Article
Publication Date
1-25-2016
Journal Title
Aquaculture Research
ISSN
ISSN 1355-557X eISSN 1365-2109
Keywords
Larviculture, Dietary taurine, Artemia enrichment, Marine finfish
Disciplines
Aquaculture and Fisheries | Biochemistry | Marine Biology | Molecular Biology | Natural Resources Management and Policy | Population Biology | Survival Analysis
Abstract
This study describes the effects of feeding taurine-supplemented Artemia on the growth, survival, whole body taurine content and jaw malformation rate of larval yellowtail kingfish Seriola lalandi. Larvae were fed rotifers containing no supplemental taurine from 3 to 15 day post hatch (dph) and Artemia co-enriched with taurine from 12 to 22 dph. Artemia were supplemented at concentrations of either 0, 0.8, 1.6, 2.4, 3.2 or 4.0 g of taurine L−1 during the 18 h HUFA enrichment process. Taurine content in the Artemia increased from 0.76 ± 0.04% DW in those without supplementation to 3.95 ± 0.17% DW in those supplemented at 4.0 g L−1. Survival rates of larval yellowtail kingfish were significantly lower in all taurine-supplemented treatments compared to the unsupplemented control. Growth was significantly improved in those larvae fed taurine-supplemented Artemia; however, we cannot attribute this improvement solely to taurine, as improved growth may have been a function of the reduced survival, and therefore increased prey availability, in these treatments. The whole body taurine content of larvae fed unsupplemented Artemia was significantly lower (1.85 ± 0.03% DW) than those fed supplemented Artemia, which did not differ from each other (pooled average 2.48 ± 0.03% DW), suggesting either a functional excretion mechanism is in place or that this represents the saturation value for larvae of this age. Jaw malformation rates were not affected by Artemia taurine content. The results of this research suggest yellowtail kingfish larvae may have a lower requirement and/or a reduced tolerance to excess dietary taurine than juveniles.
Recommended Citation
Partridge, G.J. and Woolley, L.D. (2017), The performance of larval Seriola lalandi (Valenciennes, 1833) is affected by the taurine content of the Artemia on which they are fed. Aquac Res, 48: 1260-1268. https://doi.org/10.1111/are.12967
