Cortisol and its effects on plasma thyroid hormone and electrolyte concentrations in fresh water and during seawater acclimation in yearling coho salmon, Oncorhynchus kisutch

Redding, Joseph S.; Schreck, Carl B.; Birks, Eric K.; Ewing, R. D.

doi:10.1016/0016-6480(84)90071-6

Cited by 240 publications

(109 citation statements)

References 48 publications

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“…In the present experiment, it is possible that other hormones are involved in the osmoregulation of O. bonariensis as cortisol treatment did not affect plasma osmolality and individual ions, fact also observed in channel catfish transferred to hyperionic salt water (Davis and Simco, 1976;Eckert et al, 2001) and in coho salmon during seawater acclimation (Redding et al, 1984). These last authors suggested that other factors in addition to cortisol might be required to activate ion transport mechanisms in coho salmon.…”

Section: Resultssupporting

confidence: 56%

“…1; Table 3). The lower cortisol levels at 5 and 20ppt after stress of transport or crowding of adult pejerrey as observed in previous studies (Tsuzuki et al, 2001) were possibly due to a natural preference for higher salinity levels, resulting in decreased cortisol secretion, or increased clearance rates, as pointed out by Goswami et al (1983), Redding et al (1984) and Nichols and Weisbart (1985). Data on the survival and growth of pejerrey larvae and adults at different salinities seemed to support the first hypothesis as both were shown to be euryhaline and to perform better at salinities close to 20ppt, especially compared to 0ppt (Tsuzuki et al, 2000a).…”

Section: Resultssupporting

confidence: 53%

“…Cortisol injection increased ATPase activity and reduced the increases in plasma Na + in the stenohaline common carp, Cyprinus carpio, after transfer to a salinity of 15ppt, whereas in the euryhaline tilapia, Oreochromis mossambicus (=Sarotherodon mossambicus) exposed to 27ppt, it inhibited enzyme activity and had no effect on the Na + concentration (Abo Hegab and Hanke, 1984). In yearling coho salmon, Oncorhynchus kisutch, and in channel catfish, Ictalurus punctatus, cortisol treatment did not prevent changes in plasma osmolality and electrolyte concentrations in fresh water or during seawater acclimation (Redding et al, 1984;Eckert et al, 2001). Therefore, cortisol influence on the osmoregulatory process seems to differ widely among fish.…”

Section: Introductionmentioning

confidence: 91%

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The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

Tsuzuki

Ogawa

Strüssmann

et al. 2007

Arq. Bras. Med. Vet. Zootec.

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The role of cortisol on the osmoregulation of pejerrey Odontesthes bonariensis at different salinities was investigated in adult fish injected with 0.7mg hydrocortisone per 100g body weight of fish, and transferred to 0, 5 and 20ppt of NaCl. Blood cortisol was 566ng/ml at the beginning of the experiment (0h) but surged to 1250ng/ml within 3h in cortisol-injected fish. Cortisol levels were influenced not only by treatment but also by time, being higher at 3h compared to 24h. Salinity level, time of exposure and their interaction, but not cortisol treatment, significantly affected plasma osmolality and the concentration of ions Cl -and Na + . This study showed that exogenous cortisol does not seem to play a significant role on the regulation of plasma osmolality and concentration of individual ions in pejerrey.Keywords: pejerrey, Odontesthes bonariensis, cortisol, osmoregulation, salinity RESUMO Investigou-se a participação do cortisol na osmoregulação de peixe-rei

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Section: Resultssupporting

confidence: 56%

Section: Resultssupporting

confidence: 53%

Section: Introductionmentioning

confidence: 91%

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The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

Tsuzuki

Ogawa

Strüssmann

et al. 2007

Arq. Bras. Med. Vet. Zootec.

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“…Mais l'interaction du stress sur la fonction thyroïdienne des poissons apparaît résulter en des réponses différentes selon l'espèce considérée et la nature et durée du stimulus appliqué. Il s'est avéré que certains stress à court terme tendaient à augmenter la T4 du plasma, avec soit une diminution soit une certaine stabilité de la T3 (PAGNOTTA et al, 1994 ;REDDY et al, 1995), tandis que d'autres stress brefs (REDDING et al, 1984) ou à plus long terme (VIJAYAN et LEATHERLAND, 1989 ;WENDELAAR BONGA, 1993 ;HOLLOWAY et al, 1994) semblaient induire une baisse des teneurs plasmatiques enT4 ou T3, voire une réduction globale de l'activité thyroïdienne (HIGGS et al, 1982).…”

Section: Effets De La Capture Sur Les Hormones Thyroïdiennesunclassified

Réponses Physiologiques De Sept Espèces De Poissons Lacustres À Un Stress De Capture (Filet Maillant Et Épuisette).

Bau

Ferroni-Claverie

Parent

2001

Bull. Fr. Pêche Piscic.

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Les perturbations physiologiques potentiellement liées à la capture des poissons par filet maillant ou par épuisette ont été estimées chez des brochets, sandres, perches, brèmes, chevesnes, carpes et tanches de la retenue hydroélectrique de Pareloup (Aveyron). Toute capture provoque rapidement une hausse significative des taux de catecholamines (>10 ng.ml -1 ), Cortisol (> 100 ng.ml -1 ) et glucose (> 1 g.h 1 ) et une baisse des taux d'hormones thyroïdiennes (< 20 ng.ml -1 ) du plasma chez les sept espèces. Ces réponses physiologiques au stress de capture apparaissent significativement plus marquées suite à la pêche par filet maillant et ce, notamment, chez les espèces carnassières. D'après ces résultats, l'utilisation de filets maillants s'avère inadéquate pour des recherches à court terme sur la physiologie sanguine de populations naturelles de poissons, soulignant ainsi la nécessité après ce type de pêche d'une mise en place d'infrastructures particulières (e.g., viviers, cages flottantes, etc.) pour la phase ultérieure de récupération physiologique.Mots-clés : poisson, retenue, physiologie, stress de capture. PHYSIOLOGICAL RESPONSES OF SEVEN LACUSTRINE FISH SPECIES TO CAPTURE STRESS (GILL NET AND LANDING NET). ABSTRACTThe potential physiological disturbances experienced by fish as a result of capture with gill nets or landing nets were assessed in pike, pikeperch, perch, bream, chub, carp and tench from the hydroelectric reservoir of Pareloup (Aveyron). Capture of fish quickly resulted in both a significant elevation of plasma catecholamine (> 10 ng.ml" 1 ), Cortisol (> 100 ng.ml -1 ) and glucose (> 1 g.l -1 ) levels and a drop in plasma thyroid hormone levels (< 20 ng.ml -1 ) in all species. These physiological stress responses were found to be highly increased following gill-netting, especially in carnivorous species. Hence, these data suggest that the use of gill nets is rather inadequate for short-term researches on blood physiology of ferai fish populations, then attesting to the necessity of settling up experimental facilities (e.g., fish-ponds, floating coops, etc.) following gill-netting to ensure a complete recovery of fish from capture stress.

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“…Cortisol levels were determined by Radio Immuno Assay [17] in the laboratory of Carl Schreck (Department of Fisheries and Wildlife, Oregon State University).…”

Section: Cortisol Analysismentioning

confidence: 99%

Modulation of stress hormones in rainbow trout by means of anesthesia, sensory deprivation and receptor blockade

Gerwick

Demers

Bayne

1999

Comparative Biochemistry and Physiology Part A: Molecular &

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Cortisol and its effects on plasma thyroid hormone and electrolyte concentrations in fresh water and during seawater acclimation in yearling coho salmon, Oncorhynchus kisutch

Cited by 240 publications

References 48 publications

The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

The significance of cortisol on acclimation to salinity in pejerrey Odontesthes bonariensis

Réponses Physiologiques De Sept Espèces De Poissons Lacustres À Un Stress De Capture (Filet Maillant Et Épuisette).

Modulation of stress hormones in rainbow trout by means of anesthesia, sensory deprivation and receptor blockade

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