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Abstract

This study was performed to assess the combined effects of three salinities (0, 20 and 38 ppt) and three acclimation temperatures (15, 20 and 25°C) on growth performance, proximate composition and thermal tolerance of European Sea Bass (32 g) inhabiting southern parts of the Mediterranean Sea. Highest fish final weight (83.8 g) was achieved at 25°C in freshwater (FW). Specific growth rate (SGR) at 25°C was about twice higher than that at 15°C, while 20°C promoted an intermediate growth. The fish cultured in FW at 25°C displayed consistently lower FCR and better SGR than those in full strength seawater (SW). Salinity had strong influence on fillet protein and lipid compositions. Highest lipid content (14.9%) was found in fish held in brackish water (20 ppt), and the fish held in SW had the lowest lipid content. CTMin and CTMax values ranged from 3.26°C to 7.33°C and from 31.81°C to 36.68°C, respectively. The thermal tolerance results indicated that European sea bass is more sensitive to high rather than low temperatures. These results suggested that this species can be farmed in stagnant SW deep ponds with high ambient temperatures during hot summer months in southern parts of the Mediterranean. During cold winter months, however, this fish can be successfully cultured in low salinities or even in FW.

Effects of Extreme-Ambient Temperatures in Silver Barb (Barbonymus gonionotus): Metabolic, Hemato-Biochemical Responses, Enzymatic Activity and Gill Histomorphology

“…In tropical and subtropical areas, temperature variations brought on by climate change are predicted to have an impact on teleosts' physiological processes [5]. Fish growth, physiology [6,7], metabolism [8], and immune responses [9] are all hampered by temperature changes in the water, which causes fish abundance to decline in extreme cases and cause distribution shifts [10,11]. Because aquaculture fish cannot change their distribution, the effects on them are little understood, yet they are crucial to maintaining aquaculture's sustained contribution to food security worldwide [12].…”

Mitigating the impact of winter temperatures on striped catfish (Pangasianodon hypophthalmus) using functional feed additives

“…These large temperature changes can typically decrease swimming performance, impairing growth and negatively influencing the fish's ability to capture prey. Subsequently, the impairment leads to a reduction in immune function and greater disease susceptibility and mortality (Galloway & Kieffer, 2003;Hurst, 2007;Yilmaz et al, 2020).…”

“…These large temperature changes can typically decrease swimming performance, impairing growth and negatively influencing the fish's ability to capture prey. Subsequently, the impairment leads to a reduction in immune function and greater disease susceptibility and mortality (Galloway & Kieffer, 2003; Hurst, 2007; Yilmaz et al, 2020). Although the striped catfish is a commercially significant species, there is limited information on how suboptimal rearing temperatures experienced during winter in farms can affect the species' physiology, welfare, survival, and harvest quality.…”

Solid-State Fermentation of Plant Feedstuff Mixture Affected the Physiological Responses of European Seabass (Dicentrarchus labrax) Reared at Different Temperatures and Subjected to Salinity Oscillation

“…European seabass (Dicentrarchus labrax) was chosen as the model organism for this study due to its wide tolerance range of temperature (5-28 • C) and salinity (5-50‰) conditions [35,36] with an optimal temperature between 20 and 24 • C [37] and salinity between 33 and 35‰ [38]. In addition, European seabass is the third most produced fish species in Europe and the most important commercially exploited fish in Mediterranean areas [39].…”