3 Works

Reproductive strategies affect telomere dynamics across the life course

Barbara Tschirren, Ana Ángela Romero-Haro, Jennifer Morger & Mark F. Haussmann
Because parental care has a heritable basis, the benefits of receiving increased parental provisioning early in life are genetically linked to the costs of providing increased parental provisioning at adulthood. Reproductive strategies thus result in distinct cost-benefit syndromes across the life course that may shape individual health and ageing trajectories. Here we used an artificial selection approach in Japanese quail (Coturnix japonica) to test how reproductive strategies affect telomere length, a biomarker of somatic state,...

Phase contrast images of Hierodula membranacea spermatocytes in metaphase I

Leocadia Paliulis
These are phase contrast images of Hierodula membranacea primary spermatocytes. For each image, 608 px=10 µm.

Telomere length correlates with physiological and behavioural responses of a long-lived seabird to an ecologically-relevant challenge

Z Morgan Benowitz-Fredericks, Lindsay Lacey, Shannon Whelan, Alexis Will, Scott Hatch & Alexander Kitaysky
Determinants of individual variation in reallocation of limited resources towards self-maintenance versus reproduction are not well known. We tested the hypothesis that individual heterogeneity in long-term “somatic state” a) explains variation in endocrine and behavioural responses to environmental challenges, and b) is associated with variation in strategies for allocating to self-maintenance versus reproduction. We used relative telomere length as an indicator of somatic state and experimentally generated an abrupt short-term reduction of food availability (withdrawal...

Registration Year

  • 2022
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  • Dataset
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Affiliations

  • Bucknell University
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  • University of Alaska Fairbanks
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  • McGill University
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  • University of Zurich
    1
  • University of Exeter
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  • Pennsylvania State University
    1