5 Works

Data from: Dietary antioxidants attenuate the endocrine stress response during long-duration flight of a migratory bird

Stefania Casagrande, Kristen Demoranville, Lisa Trost, Barbara Pierce, Amadeusz Bryla, Maciej Dzialo, Edyta Sadowska, Ulf Bauchinger & Scott McWilliams
Glucocorticoids (GCs) are metabolic hormones that promote catabolic processes, which release stored energy and support high metabolic demands such as during prolonged flights of migrating birds. Dietary antioxidants (e.g., anthocyanins) support metabolism by quenching excess reactive oxygen species produced during aerobic metabolism, and also by activating metabolic pathways that, similar to GCs’ function, release stored energy, although the extent of complementarity between GCs and dietary antioxidants is not well known. If anthocyanins complement GCs functions,...

The effects of dietary linoleic acid and hydrophilic antioxidants on basal, peak, and sustained metabolism in flight trained European Starlings

Wales Carter, Kristen DeMoranville, Barbara Pierce & Scott McWilliams
Dietary micronutrients have the ability to strongly influence animal physiology and ecology. For songbirds, dietary polyunsaturated fatty acids (PUFAs) and antioxidants are hypothesized to be particularly important micronutrients because of their influence on an individual’s capacity for aerobic metabolism and recovery from extended bouts of exercise. However, the influence of specific fatty acids and hydrophilic antioxidants on whole-animal performance remain largely untested. We used diet manipulations to directly test the effects of dietary PUFA, specifically...

\"Something nasty down below\": Stuart Hall and the contradictions of \"so-called Cultural Studies\" int he multi-crisis era

Bill Yousman
An earlier version of this commentary was presented at the 2021 Union for Democratic Communications conference (held virtually, June 23-25) during the closing plenary, “A Return to Sut Jhally’s 2018 Dallas Smythe Keynote Address: Stuart Hall’s Legacy for Media Studies: Conjunctures, Critique, and Political Projects.”

Season, anthocyanin supplementation, and flight training have mixed effects on the antioxidant system of migratory European starlings (Sturnus vulgaris)

Abigail Frawley, Kristen J. DeMoranville, Katherine M. Carbeck, Lisa Trost, Amadeusz Bryła, Maciej Dzialo, Edyta T. Sadowska, Ulf Bauchinger, Barbara J. Pierce & Scott McWilliams
Migratory birds engage in two periods of endurance flight annually as they travel between summer breeding and overwintering grounds, and such endurance flights likely incur oxidative costs. These costs may differ between fall and spring migration, especially for females who must prepare for breeding and egg laying in spring. The objective of this study of a migratory bird was to test proposed hypotheses about how key components of the female’s antioxidant system differ in response...

Flight training and dietary antioxidants have mixed effects on the oxidative status of multiple tissues in a female migratory songbird

Abigail Frawley, Kristen DeMoranville, Katherine Carbeck, Lisa Trost, Amadeusz Bryła, Maciej Dzialo, Edyta Sadowska, Ulf Bauchinger, Barbara Pierce & Scott McWilliams
Birds, like other vertebrates, rely on a robust antioxidant system to protect themselves against oxidative imbalance caused by energy-intensive activities such as flying. Such oxidative challenges may be especially acute for females during spring migration, since they must pay the oxidative costs of flight while preparing for reproduction; however, little previous work has examined how the antioxidant system of female spring migrants responds to dietary antioxidants and the oxidative challenges of regular flying. We fed...

Registration Year

  • 2022
    1
  • 2021
    2
  • 2020
    2

Resource Types

  • Dataset
    4
  • Journal Article
    1

Affiliations

  • Sacred Heart University
    5
  • University of Rhode Island
    4
  • Max Planck Institute for Ornithology
    3
  • Jagiellonian University
    3
  • University of British Columbia
    2
  • Max Planck Institute for Astronomy
    1
  • University of Maryland University College
    1