Relationship between oxidative stress and circulating testosterone and cortisol in pre-spawning female brown trout

Hoogenboom, Mia O.; Metcalfe, Neil B.; Groothuis, Ton G. G.; Vries, Bonnie de

doi:10.1016/j.cbpa.2012.07.002

Cited by 24 publications

(10 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…OXY) in our study. However, our results are consistent with the finding of Hoogenboom et al [52] in brown trout, where cortisol levels were not directly related to oxidative damage. The effects of CORT on physiology and behaviour have been shown to vary widely according to dose, timing, species and life-history strategy [53], [54], [55].…”

Section: Discussionsupporting

confidence: 93%

Maternal Effects Underlie Ageing Costs of Growth in the Zebra Finch (Taeniopygia guttata)

2014

View full text Add to dashboard Cite

Maternal effects provide a mechanism to adapt offspring phenotype and optimize the mother’s fitness to current environmental conditions. Transferring steroids to the yolk is one way mothers can translate environmental information into potential adaptive signals for offspring. However, maternally-derived hormones might also have adverse effects for offspring. For example, recent data in zebra finch chicks suggested that ageing related-processes (i.e. oxidative stress and telomere loss) were increased after egg-injection of corticosterone (CORT). Still, we have few experimental data describing the effect of maternal effects on the growth-ageing trade-off in offspring. Here, we chronically treated pre-laying zebra finch females (Taeniopygia guttata) with 17-β-estradiol (E2) or CORT, and followed offspring growth and cellular ageing rates (oxidative stress and telomere loss). CORT treatment decreased growth rate in male chicks and increased rate of telomere loss in mothers and female offspring. E2 increased body mass gain in male offspring, while reducing oxidative stress in both sexes but without affecting telomere loss. Since shorter telomeres were previously found to be a proxy of individual lifespan in zebra finches, maternal effects may, through pleiotropic effects, be important determinants of offspring life-expectancy by modulating ageing rate during embryo and post-natal growth.

show abstract

Section: Discussionsupporting

confidence: 93%

Maternal Effects Underlie Ageing Costs of Growth in the Zebra Finch (Taeniopygia guttata)

2014

View full text Add to dashboard Cite

show abstract

“…This suggests that the total somatic tissue concentration of antioxidants in fish at WVR had decreased during the migration (as predicted), but large differences among tissues remain. Interestingly, a recent study by Hoogenboom et al (2012) found that prior to spawning, female brown trout {Salmo trutta) with higher plasma testosterone levels had higher reactive oxygen metabolites and thus were at greater risk for oxidative stress. However, circulating testosterone levels slowly decrease throughout migration of female pink salmon (Dye et al 1986), and corresponding decreases in DNA damage in plasma were not observed.…”

Section: Discussionmentioning

confidence: 96%

Oxidative Stress in Pacific Salmon (Oncorhynchus spp.) during Spawning Migration

Wilson¹,

Taylor²,

Mackie³

et al. 2014

Physiological and Biochemical Zoology

View full text Add to dashboard Cite

The energetic and physiological challenges of spawning migrations in semelparous Pacific salmon (Oncorhynchus spp.) have been well characterized. However, the accompanying costs associated with oxidative stress during this nonfeeding migration and the potential connection to senescence have not been explored. Oxidative stress is caused by an imbalance between free radical production and absorption, leading to irreparable cellular damage that accumulates over time and contributes to senescence. The objective of this study was to determine whether oxidative stress occurs during migration between river entrance and spawning for maturing pink salmon (Oncorhynchus gorbuscha), a semelparous species. Samples of plasma, liver, heart, brain, red muscle, and white muscle were collected from individual pink salmon at both the beginning and the end of the freshwater migration and then assayed for antioxidant capacity as well as for oxidative DNA damage. Antioxidant capacity and DNA damage changed between sites on a tissue-specific basis, demonstrating that oxidative stress may be experienced differentially between tissues. Consistent with our prediction, DNA damage was higher and antioxidant capacity lower in plasma (an integrative measure of body condition) and heart tissue at the spawning grounds compared with river entrance. The increased oxidative stress of these tissues is correlated with the senescence and deterioration associated with a semelparous reproductive strategy. However, similar changes were not seen in liver, red muscle, or white muscle. More surprisingly, the antioxidant capacity was higher and DNA damage was lower in the brains of spawning migrants at the spawning grounds than at river entrance. The latter results highlight the importance of tissue-specific variability in understanding the role that oxidative stress may play in spawning migration success.

show abstract

“…The upper limit to metabolic rate is not really relevant in this situation as it is unlikely to be a constraint: the problem for the fish is not the rate at which food can be digested but whether or not the fish can get access to food in the first place. The costs of aggressive behaviours or an intrinsically high metabolic rate can reduce growth when food is patchily distributed (Reid et al , , ; Hoogenboom et al , ), and the optimal strategy may be to possess a high enough SMR to out‐compete conspecifics but low enough to ensure that excess energy is available for growth in a particular environment. Interestingly, the position of this threshold value for SMR has been observed to increase with population density (Reid et al , ).…”

Section: Links Between the Metabolic Phenotype And Behaviourmentioning

confidence: 99%

Does individual variation in metabolic phenotype predict fish behaviour and performance?

Metcalfe

Leeuwen

Killen

2015

Journal of Fish Biology

299

318

View full text Add to dashboard Cite

There is increasing interest in documenting and explaining the existence of marked intraspecific variation in metabolic rate in animals, with fishes providing some of the best‐studied examples. After accounting for variation due to other factors, there can typically be a two to three‐fold variation among individual fishes for both standard and maximum metabolic rate (SMR and MMR). This variation is reasonably consistent over time (provided that conditions remain stable), and its underlying causes may be influenced by both genes and developmental conditions. In this paper, current knowledge of the extent and causes of individual variation in SMR, MMR and aerobic scope (AS), collectively its metabolic phenotype, is reviewed and potential links among metabolism, behaviour and performance are described. Intraspecific variation in metabolism has been found to be related to other traits: fishes with a relatively high SMR tend to be more dominant and grow faster in high food environments, but may lose their advantage and are more prone to risk‐taking when conditions deteriorate. In contrast to the wide body of research examining links between SMR and behavioural traits, very little work has been directed towards understanding the ecological consequences of individual variation in MMR and AS. Although AS can differ among populations of the same species in response to performance demands, virtually nothing is known about the effects of AS on individual behaviours such as those associated with foraging or predator avoidance. Further, while factors such as food availability, temperature, hypoxia and the fish's social environment are known to alter resting and MMRs in fishes, there is a paucity of studies examining how these effects vary among individuals, and how this variation relates to behaviour. Given the observed links between metabolism and measures of performance, understanding the metabolic responses of individuals to changing environments will be a key area for future research because the environment will have a strong influence on which animals survive predation, become dominant and ultimately have the highest reproductive success. Although current evidence suggests that variation in SMR may be maintained within populations via context‐dependent fitness benefits, it is suggested that a more integrative approach is now required to fully understand how the environment can modulate individual performance via effects on metabolic phenotypes encompassing SMR, MMR and AS.

show abstract

Relationship between oxidative stress and circulating testosterone and cortisol in pre-spawning female brown trout

Cited by 24 publications

References 70 publications

Maternal Effects Underlie Ageing Costs of Growth in the Zebra Finch (Taeniopygia guttata)

Maternal Effects Underlie Ageing Costs of Growth in the Zebra Finch (Taeniopygia guttata)

Oxidative Stress in Pacific Salmon (Oncorhynchus spp.) during Spawning Migration

Does individual variation in metabolic phenotype predict fish behaviour and performance?

Contact Info

Product

Resources

About