Cookies Policy

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies.

I accept this policy

Find out more here

Do forced extrapair copulations and interspecific brood amalgamation facilitate natural hybridisation in wildfowl?

No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
MyBook is a cheap paperback edition of the original book and will be sold at uniform, low price.

Buy this article

$30.00+ Tax (if applicable)
Add to Favorites

image of Behaviour

Wildfowl species (Anseriformes; subfamily Anatinae; Aves) differ in some behavioural aspects from other avian orders. They show relatively high rates of (i) forced extrapair copulations (FEPC), (ii) interspecific brood amalgamation (IRBA) or nest parasitism, and (iii) hybridisation. Some authors, therefore, tried to link the first two behavioural aspects with hybridisation. I collected data about FEPC, IRBA and hybridisation from different studies to test for causes and effects. I used a binary logistic regression since causes (FEPC/IRBA) and an effect (hybridisation) were assumed. The stepwise binary regression showed a significant influence of IRBA on hybridisation, but not of FEPC (Table 1). Further, tribe was also included in the stepwise model, suggesting a strong phylogenetic effect. However, the influence of IRBA remained after including tribe and genus as categorically coded variables in order to control for phylogenetic effects. FEPC was also a significant factor when used in a univariate analysis. Using matched pairs of closely related species it was determined that IRBA had a significant influence on hybridisation (measured as the number of other species with which hybrids were produced). FEPC was also a significant factor (Table 2). It is concluded that interspecific brood amalgamation has a stronger impact on natural hybridisation in wildfowl than forced extrapair copulations.


Article metrics loading...



Can't access your account?
  • Tools

  • Add to Favorites
  • Printable version
  • Email this page
  • Subscribe to email alerts
  • Get permissions
  • Recommend to your library

    You must fill out fields marked with: *

    Librarian details
    Your details
    Why are you recommending this title?
    Select reason:
    Behaviour — Recommend this title to your library

    Thank you

    Your recommendation has been sent to your librarian.

  • Export citations
  • Key

  • Full access
  • Open Access
  • Partial/No accessInformation