Silver-spoon upbringing improves early-life fitness but promotes reproductive ageing in a wild bird

Foteini Spagopoulou, Céline Teplitsky, Martin I. Lind, Stéphane Chantepie, Lars Gustafsson, Alexei A. Maklakov

Research output: Contribution to journalLetter

8 Citations (Scopus)
10 Downloads (Pure)

Abstract

Early-life conditions can have long-lasting effects and organisms that experience a poor start in life are often expected to age at a faster rate. Alternatively, individuals raised in high-quality environments can overinvest in early-reproduction resulting in rapid ageing. Here we use a long-term experimental manipulation of early-life conditions in a natural population of collared flycatchers (Ficedula albicollis), to show that females raised in a low-competition environment (artificially reduced broods) have higher early-life reproduction but lower late-life reproduction than females raised in high-competition environment (artificially increased broods). Reproductive success of high-competition females peaked in late-life, when low-competition females were already in steep reproductive decline and suffered from a higher mortality rate. Our results demonstrate that ‘silver-spoon’ natal conditions increase female early-life performance at the cost of faster reproductive ageing and increased late-life mortality. These findings demonstrate experimentally that natal environment shapes individual variation in reproductive and actuarial ageing in nature.

Original languageEnglish
Pages (from-to)994-1002
Number of pages9
JournalEcology Letters
Volume23
Issue number6
Early online date2 Apr 2020
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Ageing
  • brood size manipulation
  • condition dependence
  • disposable soma theory
  • early-life conditions
  • senescence
  • ‘silver-spoon’ theory
  • SURVIVAL
  • POPULATION
  • BROOD SIZE MANIPULATION
  • MODEL
  • SEXUAL SELECTION
  • 'silver-spoon' theory
  • EVOLUTION
  • SENESCENCE
  • TRAITS
  • AGE
  • HISTORY

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