The physiological responses of tilapia exposed to low temperatures

Sun, Lian-Tien; Chen, Guan‐Ru; Chang, Ching‐Fong

doi:10.1016/0306-4565(92)90026-c

Cited by 41 publications

(26 citation statements)

References 19 publications

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“…However, cold shocks with a 9 or 11 C amplitude caused a decrease in plasma lactate levels, which was similar to the findings in tilapia subjected to a temperature decrease (Sun et al, 1992(Sun et al, , 1995. This decrease is probably temperature-and not stress-related.…”

Section: Plasma Glucose and Lactate Dynamicssupporting

confidence: 85%

Cold shocks: a stressor for common carp

Tanck¹,

Booms²,

Eding³

et al. 2000

Journal of Fish Biology

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The stress response of common carp Cyprinus carpio was studied by evaluating plasma cortisol, glucose and lactate after single or multiple rapid temperature drops ( T: 7, 9 or 11 C). All three amplitudes used induced a significant rise in plasma cortisol levels. Peaks occurred within 20 min after onset of the cold shock. No stress-related secondary metabolic changes were observed in any of the experiments described: plasma glucose levels remained unaffected and plasma lactate levels dropped. Carp of 60 days old showed a significant stress response, although plasma cortisol levels were lower than those observed in carp of 120 days. Furthermore, fish that had experienced multiple cold shocks showed an overall lower cortisol response than fish experiencing a single cold shock, indicating that habituation to this stressor occurred. 2000 The Fisheries Society of the British Isles

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Section: Plasma Glucose and Lactate Dynamicssupporting

confidence: 85%

Cold shocks: a stressor for common carp

Tanck¹,

Booms²,

Eding³

et al. 2000

Journal of Fish Biology

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“…In this study we found an increase in glucose values during colder moths (February and March). In according to our results, Sun et al (1992Sun et al ( , 1995 observed a significant hyperglycemia in tilapia Oreochromis niloticus L. subjected to a 14-16 °C temperature, while Ottolenghi et al (1995) found that blood glucose level, in Ictalurus melas, did not changes in relation to seasonal periods (spring and autumn) although its decreased with increasing water temperature.…”

Section: Biochemical Parameterssupporting

confidence: 53%

Untitled

Faggio¹,

Piccione²,

Marafioti³

et al. 2014

Turk. J. Fish. Aquat. Sci.

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The aim of this study was to investigate metabolic adaptation to monthly variations in sea bream reared in Mediterranean off-shore tanks. For this purpose, each month (from October 2010 until June 2011), on 25 Sparus aurata always randomly captured by the same batches in Sicilian farm, fork length, body weight and visceral weight were measured and blood samples were collected. Using biometric data condition factor, viscero-somatic index were calculated and on blood samples biochemical profile was assessed. The application of one way ANOVA showed a significant effect of seasons on all biometric and biochemical parameters studied (P<0.0001). Seasonality do not compromise the welfare status of sea bream that have a good acclimation capacity to environmental variations. Our results could represent a further support to better understand the effect of seasonality on the growth and metabolic profile in fish. Such information could be important in aquaculture in order to optimize husbandry practices carrying out them when physiological status of fish is seasonally less efficient.

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“…In fact, some inconsistencies have been reported in the results of several experimental studies, much of them associated with undefined and uncontrolled variables, which may alter the secretion of cortisol and glucose into the bloodstream. Most of these factors are not considered as direct stressors but have an effect on the intensity of the response which makes them a source of error (Kawauchi et al 1984;Davis and Parker 1990;Vijayan and Leatherland 1990;Lamers et al 1991;Sun et al 1992;Sun et al 1995;Reid et al 1998;Wilson et al 1998;Arends et al 1999;Fevolden et al 1999;Mommsen et al 1999;Pottinger et al 1999 Mass mortality of fish was observed following a sudden cold shock (15 °C decreases in water temperature from 27 °C to 12 °C over 24 h) in matrinxã (Brycon cephalus). In addition, a sudden 12 °C decrease in water temperature (from 27 °C to 15 °C over 24 h) caused 20% mortality in this fish species.…”

Section: Discussionmentioning

confidence: 99%

Effect of β-Glucan on cold-stress resistance of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878)

Soltanian¹,

Adloo²,

Hafeziyeh³

et al. 2014

Vet. Med.

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ABSTRACT:These experiments were performed to determine the effects of dietary β-glucan on stress responses of striped catfish (Pangasianodon hypophthalmus). Fish were fed for nine weeks with a diet containing 0 (control), 0.5% (G1), 1% (G2) and 2% (G3 group) β-glucan. Subsequently, stress responses were studied by evaluating serum cortisol and glucose levels following a constant 24 h cold shock (from 28 °C to 15 °C). Serum cortisol and glucose concentrations were measured after cold treatments of varying durations (prior to, and after one, 12 and 24 h of cold shock stress, respectively). No differences in serum cortisol and glucose levels were found between control and β-glucan-treated fish. However, the mortality rate was significantly lowered in cold challenged fish fed appropriate doses of β-glucan (in G1 and G2 vs. G3 and control group). The results of the present study demonstrate that a proper administration of β-glucan in the diet could ameliorate the detrimental effects of a severe stress resulting in a reduction in fish mortality.

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The physiological responses of tilapia exposed to low temperatures

Cited by 41 publications

References 19 publications

Cold shocks: a stressor for common carp

Cold shocks: a stressor for common carp

Untitled

Effect of β-Glucan on cold-stress resistance of striped catfish, Pangasianodon hypophthalmus (Sauvage, 1878)

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