Physiological and haematological responses in rainbow trout subjected to supplemental dissolved oxygen in fish culture

Caldwell, Colleen A.; Hinshaw, Jeff

doi:10.1016/0044-8486(94)90259-3

Cited by 92 publications

(78 citation statements)

References 9 publications

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“…The RBCcs and Hct levels in the fish exposed to an injection of Delor 103 exceeded the upper 97.5% quantile reference values (1.42 for RBCcs and 0.502 per Hct), as calculated for farmed rainbow trout under our conditions (Ř ehulka et al 2004) in a normoxic (8.8 to 10.2 mg O 2 l -1 ) and hyperoxic (11.9 to 13.3 mg O 2 l -1 ) environment (Caldwell & Hinshaw 1994). In the evaluation of the action of Delor 103 on the metabolism of phosphorus, we confirmed the results published by Lopuchovský (1986), who, on the basis of oral administration of Delor 103 to chickens (5, 50 and 100 mg kg -1 ), recorded an increase in the level of P in the blood serum.…”

Section: Discussionmentioning

confidence: 99%

Effect of polychlorinated biphenyls (Delor 103) on haematological and enzyme parameters of the rainbow trout Oncorhynchus mykiss

Řehulka¹,

Minařík²

2004

Dis. Aquat. Org.

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Rainbow trout at a weight of 223 ± 12 g (mean ± SD) were experimentally injected with a technical mixture of Delor 103 to evaluate the red blood cell indices (red blood cell count, haematocrit, haemoglobin, mean corpuscular volume, mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration) and some biochemical and enzyme parameters of the blood plasma (total protein, glucose, inorganic phosphate, total calcium, sodium, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, lactate dehydrogenase).

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Section: Discussionmentioning

confidence: 99%

Effect of polychlorinated biphenyls (Delor 103) on haematological and enzyme parameters of the rainbow trout Oncorhynchus mykiss

Řehulka¹,

Minařík²

2004

Dis. Aquat. Org.

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“…Oxygenation may also be necessary during transportation of fish, while in the salmon farming industry adding of oxygen has been done as an attempt to increase growth and induce disease resistance (Edsall and Smith 1991;Caldwell and Hinshaw 1995). The efficiency of this practice is, however, doubtful (Caldwell and Hinshaw 1994), and supplemental oxygen in excess of saturation may even result in harmful effects among the fish (Caldwell and Hinshaw 1995;Ritola et al 2002).…”

Section: Introductionmentioning

confidence: 98%

Effects of hyperoxia on behavioural and physiological variables in farmed Atlantic salmon (Salmo salar) parr

Espmark

Bæverfjord

2008

Aquacult Int

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A controlled experiment mimicking Atlantic salmon (Salmo salar) pre-smolt farming conditions showed that fish exposed to 150 and 175% super oxygenated water produced higher levels of carbon dioxide with the subsequent decrease in water pH compared to control fish exposed to 100% O 2 . At the 7th day of exposure the hyperoxic fish showed larger individual variation in swimming activity compared to the controls. The individual variance in activity, tail beat frequency and scattering in the tanks among super oxygenated fish decreased from the 7th to the 21st day of exposure. The behavioural effects of hyperoxia were seen in relation to altered feed consumption halfway through the experiment, lower body weight, and altered haematological variables at day 21 of exposure. Plasma chloride was reduced in the exposed fish and haemoglobin decreased with increasing oxygen saturations. Plasma cortisol was elevated only in the 150% oxygenated group at day 21, while no effect on osmolality was recorded. The alterations in physiology and behaviour from day 7 to day 21 may be explained in terms of acclimation to increased oxygen saturations. This study shows that behaviour may be used as an indication of impaired water quality that may influence animal welfare negatively and eventually prevent an efficient production.

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“…In fishes, hyperoxia causes transient acid-base imbalances (Wood & LeMoigne 1991) as the fishes hypoventilate. However, there is no evidence in the literature that DO levels above saturation result in significant growth impairment (Caldwell & Hindshaw 1994, Person-Le Ruyet et al 2002, Foss et al 2003. In the present study, the cumulative amount of time that fish were exposed to hypoxia in the laboratory was probably the cause of growth reduction in the laboratory experiments.…”

Section: Discussionmentioning

confidence: 56%

Environmental variability in seagrass meadows: effects of nursery environment cycles on growth and survival in larval red drum Sciaenops ocellatus

Pérez-Domínguez¹,

Holt²,

Holt³

2006

Mar. Ecol. Prog. Ser.

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In their early larval stages, red drum migrate through coastal inlets and settle into shallow seagrass meadows within estuaries. This study describes environmental rhythms in red drum nursery habitats and evaluates their role in larval growth and survival to determine nursery habitat quality. Well-defined diel cycles were observed in temperature (amplitude 3 to 7°C) and dissolved oxygen (DO) (range 2.9 to 17.5 mg O 2 l -1 ), while sporadic cold fronts lowered temperatures by 6 to 10°C in 24 to 72 h. Groups of settlement and post-settlement larvae (3.9 to 17.3 mm standard length) were exposed in the laboratory to cycles of temperature and DO, and to combined temperature and DO diel cycles and then compared to fish grown in constant conditions (control). Relative to controls, growth was significantly reduced only in DO cycles with prolonged daily exposure to hypoxia (> 8.2 h d -1 ). Survival was similar in all treatments. In response to water cooling during simulated cold fronts, fish previously exposed to temperature cycles grew faster and had a higher food intake than control fish. Fish exposed to DO cycles maintained a greater food intake than control fish but grew at a similar rate. These results indicate that (1) diel cycles impart a physiological advantage to red drum larvae, (2) field measurements of environmental characteristics at a frequency of once a day may be inadequate for assessing nursery values for red drum, and (3) increased exposure to transient hypoxia in oscillating environmental conditions can affect growth and reduce nursery value and recruitment strength.KEY WORDS: Seagrass · Diel rhythms · Nursery quality · Hypoxia · Fish larvae · Growth · Red drum · Sciaenops ocellatusResale or republication not permitted without written consent of the publisher

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Physiological and haematological responses in rainbow trout subjected to supplemental dissolved oxygen in fish culture

Cited by 92 publications

References 9 publications

Effect of polychlorinated biphenyls (Delor 103) on haematological and enzyme parameters of the rainbow trout Oncorhynchus mykiss

Effect of polychlorinated biphenyls (Delor 103) on haematological and enzyme parameters of the rainbow trout Oncorhynchus mykiss

Effects of hyperoxia on behavioural and physiological variables in farmed Atlantic salmon (Salmo salar) parr

Environmental variability in seagrass meadows: effects of nursery environment cycles on growth and survival in larval red drum Sciaenops ocellatus

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