Biodiversity & Conservation

, Volume 14, Issue 1, pp 179–186 | Cite as

Humans act against the natural process of breeder selection: A modern sickness for animal populations?

  • Javier Balbontín
  • Vincenzo Penteriani
  • Miguel Ferrer


We present a new idea about the possible effects of human-induced mortality on different age cohorts (i.e., breeders vs. juveniles) in long-lived animals. Our hypothesis is based on Curio’s idea on the effect of natural selective processes on cohorts to explain age-related increases in fecundity (selection hypothesis). We believe that negative human pressure may modify such contribution to reproduction of good versus low quality phenotypes, altering the genetic structure of the population. Ecologists and environmental managers in general should be aware of how stochastic events provoked by humans may induce changes in the genetic structure of populations.

Key words

Age cohorts Bonelli’s Eagle Genetic structure of population Human impact Phenotypic quality Selection hypothesis 


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Copyright information

© Springer 2005

Authors and Affiliations

  • Javier Balbontín
    • 1
  • Vincenzo Penteriani
    • 1
  • Miguel Ferrer
    • 1
  1. 1.Department of Applied BiologyEstación Biológica de Doñana, C.S.I.C.SevilleSpain

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