Stress Responsiveness Affects Dominant–Subordinate Relationships in Rainbow Trout

Pottinger, T.G.; Carrick, T. R.

doi:10.1006/hbeh.2001.1707

Cited by 240 publications

(178 citation statements)

References 41 publications

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“…In the present study, when subjected to a 1 hour confinement stressor, fish from the two lines exhibited a markedly divergent plasma cortisol response. This finding was consistent with previous studies on the F2 generation (Pottinger and Carrick, 2001;Trenzado, et al, 2003) and indicated that the behavioural comparisons carried out during the present study had indeed contrasted two groups of fish with a pronounced difference in HPI-axis reactivity.…”

Section: Stress Responsivenesssupporting

confidence: 94%

“…The results of this study further extend previous results indicating that there are differences in behaviour between the HR and LR lines of rainbow trout (Pottinger and Carrick, 2001;Øverli, et al, 2002). In brief, the swimming activity of the LR fish was significantly greater than that of the HR fish immediately after they were transferred to the "open field aquaria".…”

Section: Stress Responsivenesssupporting

confidence: 87%

“…The concentration of cortisol in the plasma samples was analysed in ethyl acetate extracts using the radioimmunoassay described by Pottinger & Carrick (2001). The antibodies used in this assay are IgG-F-2 and IgG Corp. in a 1:600 proportion.…”

Section: Confinement Test On Completion Of the Open Field Test The Fmentioning

confidence: 99%

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Divergence in behavioural responses to stress in two strains of rainbow trout () with contrasting stress responsiveness

Schjolden

Bäckström²,

Pulman³

et al. 2005

Hormones and Behavior

115

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The aim of this study was to establish whether two lines of rainbow trout divergent for their plasma cortisol response to a standardized stressor would show consistent differences in their behavioural response to a range of challenging situations. Our results show that the high-and low-responding (HR and LR) lines of rainbow trout did not differ in the aggression shown towards an intruder or in their response to the introduction of a novel object to their home environment. However, there was a difference in behaviour between the two selection lines when they were exposed to two unfamiliar environments. These results suggest that the behaviour of the HR and LR fish differs when they are challenged in unfamiliar environments, while their behaviour does not differ when they are challenged in their home environment. These observations are in agreement with studies on mammals thatshow that individuals with reactive coping styles perform similarly to proactive animals when they are challenged in a familiar environment, while they show different behaviour when they are challenged in unfamiliar environments. Thus, these results provide further evidence that the HR and LR selection lines of rainbow trout exemplify the two different coping styles described in mammals.

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Section: Stress Responsivenesssupporting

confidence: 94%

Section: Stress Responsivenesssupporting

confidence: 87%

See 1 more Smart Citation

Divergence in behavioural responses to stress in two strains of rainbow trout () with contrasting stress responsiveness

Schjolden

Bäckström²,

Pulman³

et al. 2005

Hormones and Behavior

115

View full text Add to dashboard Cite

show abstract

“…Cortisol was measured in the plasma samples by a validated radioimmunoassay procedure (Pottinger and Carrick, 2001a).…”

Section: Cortisol Analysismentioning

confidence: 99%

“…In addition to the endocrine divergence for which the lines were selected, they were also found to exhibit disparate behavioral traits. In particular, fish of the low-responding (LR) line displayed a considerably greater degree of aggression than individuals from the high-responding (HR) line in staged fights for dominance (Pottinger and Carrick, 2001a). We have speculated that the endocrine and behavioral characteristics of the HR and LR fish are consistent with the active and passive "coping" strategies described for other species (Koolhaas et al, 1999) and furthermore, that differences in the brain monoaminergic system between the two lines suggest a possible functional link between the endocrine and behavioral traits observed in these lines (Øverli et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Extinction of a conditioned response in rainbow trout selected for high or low responsiveness to stress

Moreira

Pulman

Pottinger

2004

Hormones and Behavior

Self Cite

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The NERC and CEH trademarks and logos ('the Trademarks') are registered trademarks of NERC in the UK and other countries, and may not be used without the prior written consent of the Trademark owner. AbstractTwo lines of rainbow trout (Oncorhynchus mykiss) that exhibit divergent endocrine responsiveness to stressors also display disparate behavioral traits. To investigate whether the high-responding (HR) and low-responding (LR) fish also differ in cognitive function the rate of extinction of a conditioned response was compared between the two lines. Groups of HR and LR fish were exposed to a paired conditioned stimulus (CS; water-off) and unconditioned stimulus (US; confinement stressor). After exposure to 18 CS-US pairings at least 70% of individuals of both lines acquired a conditioned response (CR), manifested as an elevation of blood cortisol levels on presentation of the CS only. Post-conditioning, the fish were tested by presentation of the CS at weekly intervals, for 4 weeks, with no further reinforcement and the extinction of the CR in the two lines was compared. The decline in mean plasma cortisol levels after exposure to the CS over successive tests suggested that the CR was retained for a shorter period among the HR (<14 days) than LR fish (<21 days). The frequency of individuals within each line whose plasma cortisol levels indicated a stress response when exposed to the CS was significantly greater among the LR than HR fish at 14 and 21 days with no HR fish falling into this category at 21 days. At 28 days post-conditioning, there were no HR fish and only three LR fish that were categorized as "stressed". These results suggest that there are differences in cognitive function between the two lines. Possible mechanisms underlying these differences are discussed.

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Welfare and Fish

Huntingford¹,

Kadri²

2008

Fish Welfare

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Stress Responsiveness Affects Dominant–Subordinate Relationships in Rainbow Trout

Cited by 240 publications

References 41 publications

Divergence in behavioural responses to stress in two strains of rainbow trout () with contrasting stress responsiveness

Divergence in behavioural responses to stress in two strains of rainbow trout () with contrasting stress responsiveness

Extinction of a conditioned response in rainbow trout selected for high or low responsiveness to stress

Welfare and Fish

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