Effects of salinity on physiological conditions in juvenile common snook Centropomus undecimalis

Gracia‐López, Vicente; Rosas, Carlos; Brito-Pérez, R.

doi:10.1016/j.cbpa.2006.07.008

Cited by 48 publications

(38 citation statements)

References 23 publications

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“…The O:N ratio reflects the differences of metabolites and is affected by both endogenous physiological status and exogenous environmental factors (Rocha et al 2005). In spite of the controversy and uncertainty, many authors agree with Mayzaud and Conover's (1988) criterion, which defines the catabolism of proteins when O:N ratio is 3-16 and of protein-lipids when O:N is 50-60 (e.g., Rocha et al 2005;Gracia-López et al 2006). The low O:N ratio (ranging from 13.12 to 20.91) at temperatures of 6, 10, 15 and 20°C in the present study was indicative of a protein-dominated catabolism, whereas the O:N ratio at a temperature of 25°C was 51.37, indicating that protein-lipids and carbohydrates were used as an energy substrate.…”

Section: Discussionmentioning

confidence: 96%

“…In some species, such as the juvenile spot Leiostomus xanthurus and juvenile common snook Centropomus undecimalis, the oxygen consumption rate (OCR) increased with increasing salinity (Moser and Hettler 1989;Gracia-López et al 2006). But in other species, such as the juvenile croaker Micropogonias furnieri, the minimum OCR occurs in the iso-osmotic salinity (Aristizabal-Abud 1992).…”

Section: Introductionmentioning

confidence: 97%

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Effects of temperature and salinity on oxygen consumption and ammonia excretion of juvenile miiuy croaker, Miichthys miiuy (Basilewsky)

Zheng

Jin

et al. 2008

Aquacult Int

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The metabolic responses of the juvenile Miichthys miiuy in terms of oxygen consumption and ammonia excretion to changes in temperature (6-25°C) and salinity (16-31 ppt) were investigated. At a constant salinity of 26 ppt, the oxygen consumption rate (OCR) of the fish increased with an increase in temperature and ranged between 133.38 and 594.96 lg O 2 h -1 g -1 DW. The effect of temperature on OCR was significant (P \ 0.01). Q 10 coefficients were 6.80, 1.41, 1.29 and 2.36 at temperatures of 6-10, 10-15, 15-20 and 20-25°C, respectively, suggesting that the juveniles of M. miiuy will be well adapted to the field temperature in the summer, but not in the winter. The ammonium excretion rates (AER) of the fish were also affected significantly by temperature (P \ 0.01). The O:N ratio at temperatures of 6, 10, 15 and 20°C ranged from 13.12 to 20.91, which was indicative of a protein-dominated metabolism, whereas the O:N at a temperature of 25°C was 51.37, suggesting that protein-lipids were used as an energy substrate. At a constant temperature of 15°C, the OCRs of the fish ranged between 334.14 (at 31 ppt) and 409.68 (at 16 ppt) lg O 2 h -1 g -1 DW. No significant differences were observed in the OCR and AER of the juveniles between salinities of 26 and 31 ppt (P [ 0.05). The OCR and AER at 16 ppt were, however, significantly higher than those at 26 and 31 ppt (P \ 0.05), indicating salinity lower than 16 ppt is presumably stressful to M. miiuy juveniles.

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Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 97%

Effects of temperature and salinity on oxygen consumption and ammonia excretion of juvenile miiuy croaker, Miichthys miiuy (Basilewsky)

Zheng

Jin

et al. 2008

Aquacult Int

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“…In this growth stage, sh tend to migrate to euryhaline environments, so they are expected to have greater growth than those reared in marine water; however, the lower growth of the sh in brackish water may be due to the fact that the energy from the protein was used in osmoregulation processes (Gracia-López et al 2006). This is related to the 2010).…”

Section: Discussionmentioning

confidence: 99%

Dietary protein requirement in common snook (Centropomus undecimalis ) juveniles reared in marine and brackish water

Concha‐Frías

Álvarez-González²,

Gaxiola³

et al. 2018

Ecosist. Recur. Agropec.

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A total of 300 Centropomus undecimalis juveniles, with an average initial weight of 3.16 0.28 g and average total length of 7.17 0.22 cm, were reared for eight weeks using a recirculating system to determine the dietary protein requirement for their growth and survival. The eect of ve experimental diets containing 40, 45, 50, 55 and 60% total protein content and two salinities (brackish water, BW at 5 UPS and marine water, MW at 36 UPS) were assessed. Fish were fed ve times per day at 2.5% of total biomass. All treatments were performed in triplicate,recording the individual weight and total length every 15 d, while weight gain and daily growth rate were recorded at the end of the experiment. Mean weight increased proportionally as protein content increased, with the greatest growth occurring with a 60% protein diet for sh reared in brackish water, and 55% for sh in marine water. We consider that the protein requirement in C. undecimalisjuveniles is high; in addition, it differs depending on the salinity, </

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“…Interpretation of these studies has focused on correlating choices with optimal growth (Jobling, 1981) or food conversion (Larsson, 2005). Indeed, common snook (Centropomus undecimalis) maintained at apparent optimal salinities invested more energy in processing food than fish maintained at suboptimal salinities (Gracia-Lopez et al, 2006). Additionally, there is evidence that fish can learn [e.g.…”

Section: Introductionmentioning

confidence: 99%

Diet influences salinity preference of an estuarine fish, the killifishFundulus heteroclitus

Bucking

Wood

Grosell

2012

Journal of Experimental Biology

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SUMMARYUnderstanding the interplay among the external environment, physiology and adaptive behaviour is crucial for understanding how animals survive in their natural environments. The external environment can have wide ranging effects on the physiology of animals, while behaviour determines which environments are encountered. Here, we identified changes in the behavioural selection of external salinity in Fundulus heteroclitus, an estuarine teleost, as a consequence of digesting a meal. Fish that consumed high levels of dietary calcium exhibited a higher preferred salinity compared with unfed fish, an effect that was exaggerated by elevated dietary sodium chloride. The mean swimming speed (calculated as a proxy of activity level) was not affected by consuming a diet of any type. Constraining fish to water of 22p.p.t. salinity during the digestion of a meal did not alter the amount of calcium that was absorbed across the intestine. However, when denied the capacity to increase their surrounding salinity, the compromised ability to excrete calcium to the water resulted in significantly elevated plasma calcium levels, a potentially hazardous physiological consequence. This study is the first to show that fish behaviourally exploit their surroundings to enhance their ionoregulation during digestion, and to pinpoint the novel role of dietary calcium and sodium in shaping this behaviour. We conclude that in order to resolve physiological disturbances in ion balance created by digestion, fish actively sense and select the environment they inhabit. Ultimately, this may result in transient diet-dependent alteration of the ecological niches occupied by fishes, with broad implications for both physiology and ecology.

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Effects of salinity on physiological conditions in juvenile common snook Centropomus undecimalis

Cited by 48 publications

References 23 publications

Effects of temperature and salinity on oxygen consumption and ammonia excretion of juvenile miiuy croaker, Miichthys miiuy (Basilewsky)

Effects of temperature and salinity on oxygen consumption and ammonia excretion of juvenile miiuy croaker, Miichthys miiuy (Basilewsky)

Dietary protein requirement in common snook (Centropomus undecimalis ) juveniles reared in marine and brackish water

Diet influences salinity preference of an estuarine fish, the killifishFundulus heteroclitus

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