Socially-induced changes in sodium regulation affect the uptake of water-borne copper and silver in the rainbow trout, Oncorhynchus mykiss

Sloman, Katherine A.; Morgan, Tammie P.; McDonald, D. G.; Wood, Chris M.

doi:10.1016/s1532-0456(03)00139-x

Cited by 25 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These findings are consistent with a pattern in which chronically stressed subordinate fish are more susceptible to an additional acute stressor [e.g. opportunistic bacterium (Peters et al, 1988) and waterborne toxicants (Sloman et al, 2002a;Sloman et al, 2003)]. There are many biotic and abiotic factors that influence CT max in fish in general and salmonids in particular; acclimation temperature (Beitinger et al, 2000) and genetics are probably the most important (Carline and Machung, 2001).…”

Section: Thermal Tolerancesupporting

confidence: 80%

“…Indeed, social stress has been shown to affect an animal's response to additional environmental stressors. For example, subordinate rainbow trout were more sensitive to waterborne toxicants and exhibited higher metal uptake rates than their dominant counterparts (Sloman et al, 2002a;Sloman et al, 2003) (reviewed by Sloman, 2007). A fish's ability to acclimate to a new environment can also be affected by social status.…”

Section: Chronic Social Stress Impairs Thermal Tolerance In the Rainbmentioning

confidence: 99%

“…Given that dominant and subordinate fish differ in their cortisol levels (Gilmour et al, 2005) and in their response to other stressors (Peters et al, 1988;Sloman et al, 2003), and that social stress alone induces HSPs , we hypothesized that differences in the heat shock response would exist between rainbow trout of different social rank. We also predicted that subordinate fish would be less tolerant of a thermal stress than dominant fish as determined by their critical thermal maximum temperature (CT max ).…”

Section: Chronic Social Stress Impairs Thermal Tolerance In the Rainbmentioning

confidence: 99%

See 2 more Smart Citations

Chronic social stress impairs thermal tolerance in the rainbow trout (Oncorhynchus mykiss)

LeBlanc

Middleton

Gilmour

et al. 2011

Journal of Experimental Biology

View full text Add to dashboard Cite

SUMMARYWhen faced with limited resources, juvenile salmonid fish form dominance hierarchies that result in social stress for socially subordinate individuals. Social stress, in turn, can have consequences for the ability of the fish to respond to additional stressors such as pathogens or exposure to pollutants. In the present study, the possibility that social stress affects the ability of rainbow trout (Oncorhynchus mykiss) to tolerate acute increases in water temperature was investigated. To this end, we first evaluated physiological and cellular stress responses following a 1h heat shock in juvenile fish in dominance hierarchies. We measured stress hormone (cortisol and catecholamines) concentrations and blood, brain and liver tissue levels of three heat shock proteins (HSPs), the stress inducible HSP70, the constitutive HSC70 and HSP90, in dominant and subordinate trout. No effects of social status on the hormonal response to the heat stress were detected, but the cellular heat shock response in the brain and liver of dominant and subordinate individuals was inhibited. We then assessed thermal tolerance in dominant and subordinate fish through critical thermal maximum temperature (CT max ) trials and measured HSPs following the heat shock. Subordinate fish were less thermally tolerant than their dominant counterparts. We conclude that social stress impacts the ability of fish to respond, on a cellular scale and in a tissue-specific manner, to increases in water temperature, with likely consequences for overall fitness.

show abstract

Section: Thermal Tolerancesupporting

confidence: 80%

Section: Chronic Social Stress Impairs Thermal Tolerance In the Rainbmentioning

confidence: 99%

Section: Chronic Social Stress Impairs Thermal Tolerance In the Rainbmentioning

confidence: 99%

See 1 more Smart Citation

Chronic social stress impairs thermal tolerance in the rainbow trout (Oncorhynchus mykiss)

LeBlanc

Middleton

Gilmour

et al. 2011

Journal of Experimental Biology

View full text Add to dashboard Cite

show abstract

“…In conclusion, previous work has reported that chronic social stress impaired the thermal tolerance of rainbow trout (LeBlanc et al 2011), and that subordinate trout experienced greater uptake and accumulation of copper and silver from contaminated environments than did dominant fish (Sloman et al 2002a(Sloman et al , 2003. The findings of the present study add hypoxia to the list of environmental stressors to which subordinate rainbow trout are more vulnerable than their dominant conspecifics.…”

Section: Discussionsupporting

confidence: 62%

Low social status impairs hypoxia tolerance in rainbow trout (Oncorhynchus mykiss)

Thomas

Gilmour

2012

J Comp Physiol B

View full text Add to dashboard Cite

In the present study, chronic behavioural stress resulting from low social status affected the physiological responses of rainbow trout (Oncorhynchus mykiss) to a subsequent acute stressor, exposure to hypoxia. Rainbow trout were confined in fork-length matched pairs for 48-72 h, and social rank was assigned based on behaviour. Dominant and subordinate fish were then exposed individually to graded hypoxia (final water PO(2), PwO(2) = 40 Torr). Catecholamine mobilization profiles differed between dominant and subordinate fish. Whereas dominant fish exhibited generally low circulating catecholamine levels until a distinct threshold for release was reached (PwO(2) = 51.5 Torr corresponding to arterial PO(2), PaO(2) = 24.1 Torr), plasma catecholamine concentrations in subordinate fish were more variable and identification of a distinct threshold for release was problematic. Among fish that mobilized catecholamines (i.e. circulating catecholamines rose above the 95% confidence interval around the baseline value), however, the circulating levels achieved in subordinate fish were significantly higher (459.9 ± 142.2 nmol L(-1), mean ± SEM, N = 12) than those in dominant fish (130.9 ± 37.9 nmol L(-1), N = 12). The differences in catecholamine mobilization occurred despite similar P(50) values in dominant (22.0 ± 1.5 Torr, N = 6) and subordinate (22.1 ± 2.2 Torr, N = 8) fish, and higher PaO(2) values in subordinate fish under severely hypoxic conditions (i.e. PwO(2) < 60 Torr). The higher PaO(2) values of subordinate fish likely reflected the greater ventilatory rates and amplitudes exhibited by these fish during severe hypoxia. At the most severe level of hypoxia, subordinate fish were unable to defend arterial blood O(2) content, which fell to approximately half (0.60 ± 0.13 mL O(2) g(-1) haemoglobin, N = 9) that of dominant fish (1.08 ± 0.09 mL O(2) g(-1) haemoglobin, N = 9). Collectively, these data indicate that chronic social stress impacts the ability of trout to respond to the additional, acute stress of hypoxia.

show abstract

“…In addition, socially mediated differences in physiology may lead to variation in susceptibility for water-borne contaminants in aquaculture. For example, the accumulation of water-borne copper is higher in subordinate fish than in dominant fish, probably due to differences in sodium uptake over the gills (Sloman et al 2003).…”

Section: Acute Chronic Stress and Immune-suppressionmentioning

confidence: 99%

Fighting and Aggression

Damsgård¹,

Huntingford²

2012

Aquaculture and Behavior

View full text Add to dashboard Cite

Aggression (behaviour that actually or potentially causes harm to another animal) is widespread among fishes, often taking the form of territoriality or dominance. The mechanisms that control aggression in fish are described, including the effects of stimuli from opponents, the importance of the context in which an aggressive encounter occurs and the effects of nutritional condition, endocrine status and brain biochemistry. The way aggression changes during development is then considered, evidence given for inherited differences in aggressiveness and an account presented of the environmental factors that influence the way aggression develops. The benefits that fish gain from winning fights, the costs that they incur from fighting and how they balance costs against benefits to promote their individual fitness are described. Data are then given on the incidence of aggression among cultured fish, on some resulting problems for production, welfare and environmental protection and on the effects of domestication and captive rearing of aggressiveness. Possible solutions to such problems are discussed, based on selecting appropriate fish for culture and the design of husbandry systems that minimise aggression. Finally, some systems for mitigating the effects of domestication and captive rearing on the aggressive behaviour of cultured fish are described.

show abstract

Socially-induced changes in sodium regulation affect the uptake of water-borne copper and silver in the rainbow trout, Oncorhynchus mykiss

Cited by 25 publications

References 34 publications

Chronic social stress impairs thermal tolerance in the rainbow trout (Oncorhynchus mykiss)

Chronic social stress impairs thermal tolerance in the rainbow trout (Oncorhynchus mykiss)

Low social status impairs hypoxia tolerance in rainbow trout (Oncorhynchus mykiss)

Fighting and Aggression

Contact Info

Product

Resources

About