title: Evaluation of Pacific white shrimp (Litopenaeus vannamei) health during a superintensive aquaculture growout using NMR-based metabolomics.
abstract: Success of the shrimp aquaculture industry requires technological advances that increase production and environmental sustainability. Indoor, superintensive, aquaculture systems are being developed that permit year-round production of farmed shrimp at high densities. These systems are intended to overcome problems of disease susceptibility and of water quality issues from waste products, by operating as essentially closed systems that promote beneficial microbial communities (biofloc). The resulting biofloc can assimilate and detoxify wastes, may provide nutrition for the farmed organisms resulting in improved growth, and may aid in reducing disease initiated from external sources. Nuclear magnetic resonance (NMR)-based metabolomic techniques were used to assess shrimp health during a full growout cycle from the nursery phase through harvest in a minimal-exchange, superintensive, biofloc system. Aberrant shrimp metabolomes were detected from a spike in total ammonia nitrogen in the nursery, from a reduced feeding period that was a consequence of surface scum build-up in the raceway, and from the stocking transition from the nursery to the growout raceway. The biochemical changes in the shrimp that were induced by the stressors were essential for survival and included nitrogen detoxification and energy conservation mechanisms. Inosine and trehalose may be general biomarkers of stress in Litopenaeus vannamei. This study demonstrates one aspect of the practicality of using NMR-based metabolomics to enhance the aquaculture industry by providing physiological insight into common environmental stresses that may limit growth or better explain reduced survival and production.
authors.affiliation: Chemical Sciences Division, National Institute of Standards and Technology, Hollings Marine Laboratory, Charleston, South Carolina, United States of America. tracey.schock@nist.gov
authors.forename: Tracey B
authors.initials: TB
authors.lastname: Schock
authors.forename: Jessica
authors.initials: J
authors.lastname: Duke
authors.forename: Abby
authors.initials: A
authors.lastname: Goodson
authors.forename: Daryl
authors.initials: D
authors.lastname: Weldon
authors.forename: Jeff
authors.initials: J
authors.lastname: Brunson
authors.forename: John W
authors.initials: JW
authors.lastname: Leffler
authors.forename: Daniel W
authors.initials: DW
authors.lastname: Bearden
mesh_terms: D000818:Animals; D017756:Aquaculture / Q000379:methods*; D019649:Food Industry; D006262:Health; D009682:Magnetic Resonance Spectroscopy; D055432:Metabolomics; D015999:Multivariate Analysis; D033561:Penaeidae / Q000254:growth & development* / Q000378:metabolism* / Q000502:physiology; D013312:Stress, Physiological
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