Yolk vitamin E prevents oxidative damage in gull hatchlings

Parolini, Marco; Khoriauli, Lela; Possenti, Cristina Daniela; Colombo, Graziano; Caprioli, Manuela; Santagostino, Marco; Nergadze, Solomon G.; Milzani, Aldo; Giulotto, Elena; Saino, Nicola

doi:10.1098/rsos.170098

Cited by 26 publications

(19 citation statements)

References 23 publications

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“…3) and the predicted negative associations were observed within most regions using both RMR and BMR datasets. Moreover, increased investment in mechanisms to mitigate damage, such as endogenous production of antioxidants (Parolini et al . 2017) or mitochondrial membrane composition (Hulbert et al .…”

Section: Discussionmentioning

confidence: 99%

Metabolic rate is negatively linked to adult survival but does not explain latitudinal differences in songbirds

Boyce

Mouton

Lloyd

et al. 2019

Preprint

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27Survival rates vary dramatically among species and predictably across latitudes, but causes of this 28 variation are unclear. The rate of living hypothesis posits that physiological damage from metabolism 29 causes species with faster metabolic rates to exhibit lower survival rates. However, whether increased 30 survival commonly observed in tropical and south temperate latitudes is associated with slower metabolic 31 rate remains unclear. We compared metabolic rates and annual survival rates across 46 species that we 32 measured, and 147 species from literature data across northern, southern, and tropical latitudes. High 33 metabolic rates were associated with lower survival but latitude had substantial direct effects on survival 34 independent of metabolism. The inability of metabolic rate to explain latitudinal variation in survival 35 suggests 1) that species may evolve physiological mechanisms that mitigate physiological damage from 36 cellular metabolism, and 2) a larger role of extrinsic environmental, rather than intrinsic metabolic, causes 37 of latitudinal differences in mortality. 38 39 Key words: physiology, adult survival, metabolism, life history theory, latitude, pace of life 48 telomere dynamics) may coevolve with metabolic rate (Brand 2000; Monaghan & Haussmann 2006; 49 Hulbert et al. 2007; Costantini 2008; Salin et al. 2015; Skrip & Mcwilliams 2016; Vagasi et al. 2018). 50 Furthermore, survival rates may be unrelated to the accumulation of physiological damage entirely. 51 Extrinsic sources of mortality, such as harsh weather or predation, may be more important in shaping 52 variation in survival. Consequently, whether metabolic rate explains variation in adult survival across 53 species remains unclear (Costantini 2008). 54 Comparative studies show that metabolic rate is negatively correlated with maximum observed 55 lifespan (MLS) in birds and mammals at broad taxonomic scales (Trevelyan et al. 1990; Hulbert et al. 56 2007). However, the overriding influence of mass on both lifespan and metabolism obscures the 57 independent effect of metabolic rate on lifespan in such studies (Speakman 2005). Moreover, other 58 comparisons raise questions about this relationship. Bats and birds have higher metabolic rates but are 59 longer-lived than terrestrial mammals of similar size, suggesting that metabolism and lifespan can be 60 decoupled, at least across broad taxonomic groups (Holmes & Austad 1995; Holmes et al. 2001; Munshi-61 South & Wilkinson 2010). Furthermore, measurements of MLS represent exceptional rather than an 62 average across individuals and are sensitive to variation in sample size, recapture probability and quality 63 of record keeping (Krementz et al. 1989; Promislow 1993). In addition, MLS is often based on captive 64 individuals that are well-fed and isolated from disease, predation and other extrinsic sources of mortality 65 that are ubiquitous in wild populations (i.e. de Magalhães & Costa 2009). Direct estimates of annual 84Here, we test whether metabolic rate explains variatio...

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Section: Discussionmentioning

confidence: 99%

Metabolic rate is negatively linked to adult survival but does not explain latitudinal differences in songbirds

Boyce

Mouton

Lloyd

et al. 2019

Preprint

View full text Add to dashboard Cite

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“…Vitamin E ( -tocopherol) 12.0 mg 6.2 mg acts as an antioxidant and helps to alleviate the costs of reproduction (Badás et al, 2015;Parolini et al, 2017) October in the Southern Hemisphere, December to April in the Northern Hemisphere) ( Table 7). Some plants, such as the Chilean Peppercorn (Schinus molle) can produce fruits all year-round if conditions are favourable, while others have a much more confined season.…”

Section: Seasonalitymentioning

confidence: 99%

The contribution of the Canary Island date palm (Phoenix canariensis) to the winter diet of frugivores in novel ecosystems

Spennemann

2019

European Journal of Ecology

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With the increasing expansion in urban areas, many species have adapted to utilising horticulturally used plants as alternate or augmentary food sources, in particular, during winter – when native foods are largely absent. Ornamental palms, particularly Canary Island Date Palms, fruit continuously during most of the year and thus provide a stable food supply. Based on observational, metric and bio-chemical data, this paper examines the role Canary Island Date Palms can and do play in the nutrition of frugivorous animals, in particular, for birds. It demonstrates that with its nearly year-round provisioning of drupes, the palm plays a major role as a ‘staple’ and backup food source for several species.

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“…The effect that acute aggressive behaviors had on OXY concentrations was much stronger in females than in males (i.e., STI females had 39.62% lower OXY concentrations than control females while STI males had only 6.18% lower OXY concentrations than controls). This sex difference in sensitivity could be given by a differential re-allocation of antioxidants to: protect gametes [61], the developing embryo [see above; 19,56,62], and/or those tissues with the greatest oxygen consumption [e.g., muscles; 59]. Sex differences could also be explained by other physiological pathways besides an increase in activity levels (see below for further discussion).…”

Section: Discussionmentioning

confidence: 99%

Acute aggressive behavior perturbates the oxidative status of a wild bird independently of testosterone and progesterone

Mentesana

Adreani

2020

Preprint

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9Aerobically demanding activities like aggression can lead to an elevated oxidative 1 0 metabolism influencing the balance between pro-oxidant and antioxidant compounds and 1 1 result in an overall increase in oxidative stress. Aggression may also generate oxidative stress 1 2 indirectly through an increase in testosterone levels and in metabolic rate. Given that 1 3 oxidative stress could represent a physiological cost of aggression we tested the hypothesis 1 4 that acute aggressive behavior can increase oxidative stress and evaluated the role of 1 5 testosterone as a potential mediator. To achieve this, we experimentally manipulated the 1 6 aggressive behavior of wild male and female birds and measured pro-oxidants, enzymatic-1 7 and non-enzymatic antioxidants, and testosterone concentrations. After 20 minutes of 1 8 aggressive behavior, both sexes had higher levels of oxidative stress levels than control 1 9individuals. This effect was independent of testosterone levels and much stronger in females.

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Yolk vitamin E prevents oxidative damage in gull hatchlings

Cited by 26 publications

References 23 publications

Metabolic rate is negatively linked to adult survival but does not explain latitudinal differences in songbirds

Metabolic rate is negatively linked to adult survival but does not explain latitudinal differences in songbirds

The contribution of the Canary Island date palm (Phoenix canariensis) to the winter diet of frugivores in novel ecosystems

Acute aggressive behavior perturbates the oxidative status of a wild bird independently of testosterone and progesterone

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