Effect of temperature on growth performance of greater amberjack (SERIOLA DUMERILIRisso 1810) Juveniles

Abstract

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. K E Y W O R D Sfeed efficiency, gastric evacuation, greater amberjack, gut transit, morphometric analyses, rearing temperature, Seriola dumerili

Sex differentiation and early sex identification in hatchery produced greater amberjack (Seriola dumerili) reared in sea cages

“…In another study on wild-caught greater amberjack reared under natural seawater temperatures, feed intake was also found to decrease at temperatures lower than 12°C (Skaramuca et al 2001). In accordance to the previous studies, better performance, in terms of growth and feeding parameters, was found in tank-reared greater amberjack at 26°C, with respect to 17 and 22°C in a study conducted in Spain (Fernández-Montero et al 2017). In the HCMR cage facilities, feeding is reduced at temperatures < 16°C, and the sh return to feeding normally at temperatures > 19°C (personal observations).…”

Aerobic scope protection reduces ectotherm growth under warming

“…Data are from (Fernández-Montero et al, 2017;Fonds et al, 1992;Handeland et al, 2008;Hofmann and Fischer, 2003;Kinne, 1960;Koskela et al, 1997;Mesa et al, 2013;Ojanguren et al, 2001;Remen et al, 2016;Schram et al, 2013;Sun and Chen, 2009;Sun and Chen, 2014;Xie et al, 2010;Zanuzzo et al, 2019).…”

Effect of increased rearing temperature on digestive function in cobia early juvenile

“…While the evacuation of the stomach may last less than one day, the evacuation of the intestine may last 36 to 48 h. These values are only indicative for median sized farmed fish with daily feeding. Different factors such as feeding frequency, ration size, feed quality, body size and water temperature have been described to affect transit time in fish (Miegel et al, 2010), particularly the last one (De et al, 2016;Fernández-Montero et al, 2018;Handeland et al, 2008;Temming and Herrmann, 2001). According to these studies, transit time increases with the temperature except at extremely high values.…”

“…Generally, the feed intake increases with increased temperatures up to levels close to the upper tolerance limits (Fernández-Montero et al, 2018;Pérez-Casanova et al, 2009). Digestive enzyme activity has been traditionally assessed in two ways.…”

“…Gut evacuation rate also increases at increasing temperatures up to a certain limit, leading to lower residence time in the digestive tract (De et al, 2016;Fernández-Montero et al, 2018;Handeland et al, 2008;Temming and Herrmann, 2001). However, the estimation of evacuation rate has usually been performed under unrealistic feeding conditions in which the fish has been refed until satiation after a starvation period.…”