Are there intergenerational and population-specific effects of oxidative stress in sockeye salmon (Oncorhynchus nerka)?

Taylor, Jessica J.; Wilson, Samantha M.; Sopinka, Natalie; Hinch, Scott G.; Patterson, David A.; Cooke, Steven J.; Willmore, William G.

doi:10.1016/j.cbpa.2015.01.022

Cited by 16 publications

(11 citation statements)

References 44 publications

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“…Taylor et al . () measured oxidative stress indicators and antioxidants in the plasma, heart, brain and liver of adult female sockeye salmon ( Oncorhynchus nerka , Salmonidae) and developing offspring from three distinct populations from the Fraser river. The study revealed that oxidative stress and antioxidant status in the offspring were not affected by maternal oxidative stress.…”

Section: Life Histories and Other Intrinsic Factors Associated With Omentioning

confidence: 99%

“…As a life history strategy, fish may reduce investments in their own protection in favour of egg antioxidant protection which is essential for hatching success and survival chances (Fontagné et al, 2006). Taylor et al (2015) measured oxidative stress indicators and antioxidants in the plasma, heart, brain and liver of adult female sockeye salmon (Oncorhynchus nerka, Salmonidae) and developing offspring from three distinct populations from the Fraser river. The study revealed that oxidative stress and antioxidant status in the offspring were not affected by maternal oxidative stress.…”

Section: Reproductive Strategymentioning

confidence: 99%

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A comparative and evolutionary approach to oxidative stress in fish: A review

et al. 2017

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Oxidative stress results from an imbalance between the production of reactive oxygen species and the antioxidants defences, in favour of the former. In recent years, the association between oxidative processes, environmental change and life histories has received much attention. However, most studies have focused on avian and mammalian taxonomic groups, with less attention given to fish, despite their ecological and socio‐economic relevance. Here we present a review of the extrinsic and intrinsic factors that influence oxidative processes in fish, using a comparative and evolutionary approach. We demonstrate that oxidative stress plays a key role in shaping fish's responses to environmental change as well as life history strategies. We focus on representative examples to compare and contrast how levels of oxidative stress respond to changes in temperature, salinity and oxygen availability. Furthermore, we describe how emerging threats (i.e. pollution) affect oxidative stress parameters in fish. Oxidative stress indicators are increasingly being used as biomarkers to understand the mechanisms of various human‐induced stressors, but also to understand the physiological consequences of how animals are distributed in space and time and influenced by different life stages. Despite the expansion of the field of ecological oxidative stress, we are only beginning to understand the complex ways in which oxidative stress may interact with both extrinsic and intrinsic factors in fish. We conclude with a research agenda for oxidative research on fish and note that there is need for further research particularly in the area of life history strategies and ecological implications of oxidative status, as this type of research has the potential to help us understand patterns and dynamics relevant to fish conservation.

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Section: Life Histories and Other Intrinsic Factors Associated With Omentioning

confidence: 99%

Section: Reproductive Strategymentioning

confidence: 99%

A comparative and evolutionary approach to oxidative stress in fish: A review

et al. 2017

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“…To date, however, only a few studies have investigated the link between GC manipulation and oxidative status, and they focused on avian and mammalian taxa (reviewed in Costantini et al, 2011) over short-term periods (days to weeks; Alonso-Alvarez et al, 2004;Costantini, 2008). Fewer studies have focused on oxidative stress in wild fish (Taylor et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Short-term and long-term effects of transient exogenous cortisol manipulation on oxidative stress in juvenile brown trout

Birnie‐Gauvin

Peiman

Larsen

et al. 2017

Journal of Experimental Biology

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In the wild, animals are exposed to a growing number of stressors with increasing frequency and intensity, as a result of human activities and human-induced environmental change. To fully understand how wild organisms are affected by stressors, it is crucial to understand the physiology that underlies an organism's response to a stressor. Prolonged levels of elevated glucocorticoids are associated with a state of chronic stress and decreased fitness. Exogenous glucocorticoid manipulation reduces an individual's ability to forage, avoid predators and grow, thereby limiting the resources available for physiological functions like defence against oxidative stress. Using brown trout (Salmo trutta), we evaluated the short-term (2 weeks) and long-term (4 months over winter) effects of exogenous cortisol manipulations (versus relevant shams and controls) on the oxidative status of wild juveniles. Cortisol caused an increase in glutathione over a 2 week period and appeared to reduce glutathione over winter. Cortisol treatment did not affect oxidative stress levels or low molecular weight antioxidants. Cortisol caused a significant decrease in growth rates but did not affect predation risk. Over-winter survival in the stream was associated with low levels of oxidative stress and glutathione. Thus, oxidative stress may be a mechanism by which elevated cortisol causes negative physiological effects.

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“…Previous studies have used plasma for the assessment of oxidative protection and damage (reviewed in Birnie-Gauvin et al, 2017), including research on nesting bass (see Wilson et al, 2012). In addition, other studies on teleost fish have compared different tissues and revealed that plasma concentrations are related to those in other tissues (Taylor et al, 2015).…”

Section: Materials and Methods Study Site Study Animals And Samplingmentioning

confidence: 99%

Oxidative ecology of paternal care in wild smallmouth bass, Micropterus dolomieu

Elmer

O’Connor

Philipp

et al. 2017

Journal of Experimental Biology

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Physiologically, oxidative stress is considered a homeostatic imbalance between reactive oxygen species production and absorption. From an ecological perspective, oxidative stress may serve as an important constraint to life-history traits, such as lifespan, reproduction and the immune system, and is gaining interest as a potential mechanism underlying life-history trade-offs. Of late, there has been much interest in understanding the role of oxidative stress in the ecology of wild animals, particularly during challenging periods such as reproduction. Here, we used a long-term study population of a fish with sole-male parental care, the smallmouth bass, Micropterus dolomieu, to examine the associations among oxidative stress indicators and life-history variables in nest-guarding males. In addition, we investigated the potential role of oxidative stress as a physiological mediator of the life-history trade-off decision of paternal smallmouth bass to stay with or abandon their brood. We found that oxidative stress was significantly related to the life history of paternal smallmouth bass, such that older, larger fish with greater reproductive experience and larger broods nesting in cooler water temperatures had lower levels of oxidative stress. However, we found no significant correlation between oxidative stress and nesting success, suggesting that oxidative stress may not be involved in the decision of male smallmouth bass to abandon their brood. Wild fish have been relatively understudied in the emerging field of oxidative ecology, and this study makes noteworthy contributions by revealing interesting connections between the life histories of paternal smallmouth bass and their oxidative status.

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Are there intergenerational and population-specific effects of oxidative stress in sockeye salmon (Oncorhynchus nerka)?

Cited by 16 publications

References 44 publications

A comparative and evolutionary approach to oxidative stress in fish: A review

A comparative and evolutionary approach to oxidative stress in fish: A review

Short-term and long-term effects of transient exogenous cortisol manipulation on oxidative stress in juvenile brown trout

Oxidative ecology of paternal care in wild smallmouth bass, Micropterus dolomieu

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