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Effect of temperature on growth performance of greater amberjack ( SERIOLA DUMERILI Risso 1810) Juveniles
Author(s) -
FernándezMontero Alvaro,
Caballero Maria Jose,
Torrecillas Silvia,
Tuset Victor Manuel,
Lombarte Antoni,
Ginés Rafael Ruiz,
Izquierdo Marisol,
Robaina Lidia,
Montero Daniel
Publication year - 2018
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.13537
Subject(s) - biology , fishery , zoology , aquaculture , fish farming , carangidae , seriola quinqueradiata , fish <actinopterygii>
In order to successfully diversify Mediterranean aquaculture, it is necessary to determine optimum culture conditions of potential candidate species such as greater amberjack ( Seriola dumerili ). Among culture conditions, rearing temperature is a key factor for achieving optimum growth and maintaining fish welfare. However, little is known about the optimum culture conditions of greater amberjack ( Seriola dumerili ). Thus, the aim of this study was to determine the effect of three different rearing temperatures (17, 22 and 26°C) during 120 days on growth performance, body morphometry, biochemical composition, gut transit and liver morphology of greater amberjack ( Seriola dumerili ) juveniles. After 120 days of rearing, fish raised at 26°C showed higher ( p < .05) body weight and specific growth rate than fish held at lower temperatures, as well as improved feed utilization, protein efficiency and nutrient retention percentages. Fish stomach emptying was faster ( p < .05) in fish raised at 26°C than in fish held at 22°C and 17°C. Similar results were obtained for gut transit time, being gut emptying faster ( p < .05) in fish reared at 26°C than in fish cultured at lower temperatures. Rearing temperature also induced changes in fish morphology which resulted in a higher ( p < .05) caudal propulsion efficiency index for fish reared at 26°C. Based on these results, we conclude that greater amberjack fingerlings perform better at 26°C than at 22°C or 17°C.