Antioxidant capacity differs across social ranks and with ascension in males of a group-living fish

Culbert, Brett M.; Dijkstra, Peter D.; Gilmour, Kathleen M.; Balshine, Sigal

doi:10.1016/j.cbpa.2021.111126

Cited by 8 publications

(3 citation statements)

References 106 publications

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“…The fact that in the current study we did not detect social status differences in oxidative balance in most tissue types could be due to a limited cost of social dominance when the hierarchy is stable (for a study comparing stable hierarchies and social ascension in another cichlid species, see (Culbert et al, 2022)). Our findings are consistent with the notion that animals undergo behavioral and physiological adjustments to cope with demanding life history activities.…”

Section: Limited Cost Of Social Dominance When Markers Are Evaluated ...mentioning

confidence: 57%

Social dominance and reproduction result in increased integration of oxidative state in males of an African cichlid fish

Fialkowski

Border

Bolitho

et al. 2022

Comparative Biochemistry and Physiology Part A: Molecular &

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Section: Limited Cost Of Social Dominance When Markers Are Evaluated ...mentioning

confidence: 57%

Social dominance and reproduction result in increased integration of oxidative state in males of an African cichlid fish

Fialkowski

Border

Bolitho

et al. 2022

Comparative Biochemistry and Physiology Part A: Molecular &

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“…Experiments were conducted between February and October 2022 with laboratory-reared N. pulcher , which were descendants of wild-caught fish from Lake Tanganyika, Africa. Fish were held in 189 l aquaria containing a social group consisting of a dominant male–female breeding pair and 2–6 smaller subordinates of mixed sex [ 31 ]; these groups were established and subsequently allowed to stabilize for a minimum of one month before experimentation. Water temperature was held at 27°C (±1°C), and the photoperiod was light : dark for 13 : 11 h. Fish were fed 6 days per week with commercial cichlid flakes.…”

Section: Methodsmentioning

confidence: 99%

Status-dependent metabolic effects of social interactions in a group-living fish

Morin,

Culbert,

Mehdi

et al. 2024

Biol. Lett.

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Social interactions can sometimes be a source of stress, but social companions can also ameliorate and buffer against stress. Stress and metabolism are closely linked, but the degree to which social companions modulate metabolic responses during stressful situations—and whether such effects differ depending on social rank—is poorly understood. To investigate this question, we studied Neolamprologus pulcher , a group-living cichlid fish endemic to Lake Tanganyika and measured the metabolic responses of dominant and subordinate individuals when they were either visible or concealed from one another. When individuals could see each other, subordinates had lower maximum metabolic rates and tended to take longer to recover following an exhaustive chase compared with dominants. In contrast, metabolic responses of dominants and subordinates did not differ when individuals could not see one another. These findings suggest that the presence of a dominant individual has negative metabolic consequences for subordinates, even in stable social groups with strong prosocial relationships.

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“…Consequently, variation in hormone levels within different social ranks is likely associated with different neural, physiological, and neuroendocrine factors, which could influence relationships between hormone levels and oxidative stress across social ranks. However, most previous studies investigating the relationship between oxidative stress and hormone levels across social ranks have relied on a single measure of oxidative stress and/or within a single tissue (Border et al, 2019; Culbert et al, 2022), which only offers a glimpse into the potential ways that the relationships between hormones and oxidative stress might be modulated by the social environment.…”

Section: Introductionmentioning

confidence: 99%

Social rank influences relationships between hormones and oxidative stress in a cichlid fish

Culbert

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Fialkowski

et al. 2022

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An individual's social environment can have widespread effects on their physiology, including effects on oxidative stress and hormone levels. Many studies have posited that variation in oxidative stress experienced by individuals of different social ranks might be due to endocrine differences, however, few studies have evaluated this hypothesis. Here, we assessed whether a suite of markers associated with oxidative stress in different tissues (blood, plasma, liver, or gonads) had social rank-specific relationships with circulating testosterone or cortisol levels in males of a cichlid fish,Astatotilapia burtoni. Across all fish, blood DNA damage (a global marker of oxidative stress) and gonadal synthesis of reactive oxygen species (as indicated by NADPH-oxidase (NOX) activity) were lower when testosterone was high. High DNA damage in both the blood and gonads was associated with high cortisol in subordinates, but low cortisol in dominants. Additionally, high cortisol was associated with greater production of reactive oxygen species (greater NOX activity) in both the gonads (dominants only) and liver (dominants and subordinates). In general, high testosterone was associated with lower oxidative stress across both social ranks, whereas high cortisol was associated with lower oxidative stress in dominants and higher oxidative stress in subordinates. Taken together, our results show that differences in the social environment can lead to contrasting relationships between hormones and oxidative stress.

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Antioxidant capacity differs across social ranks and with ascension in males of a group-living fish

Cited by 8 publications

References 106 publications

Social dominance and reproduction result in increased integration of oxidative state in males of an African cichlid fish

Social dominance and reproduction result in increased integration of oxidative state in males of an African cichlid fish

Status-dependent metabolic effects of social interactions in a group-living fish

Social rank influences relationships between hormones and oxidative stress in a cichlid fish

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