Webbläsaren som du använder stöds inte av denna webbplats. Alla versioner av Internet Explorer stöds inte längre, av oss eller Microsoft (läs mer här: * https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Var god och använd en modern webbläsare för att ta del av denna webbplats, som t.ex. nyaste versioner av Edge, Chrome, Firefox eller Safari osv.

Porträtt av Henrik Smith. Foto.

Henrik Smith

Professor

Porträtt av Henrik Smith. Foto.

Sperm competition in the European starling (Sturnus vulgaris): An experimental study of mate switching

Författare

  • Henrik Smith
  • Liv Wennerberg
  • Torbjörn von Schantz

Summary, in English

In apparently monogamous or polygynous birds, sperm from several males may compete to fertilize the eggs laid by one female. In this study we evaluate sperm competition in the European starling (Sturnus vulgaris) by means of a mate-switching experiment. Already-mated males were removed between 1-7 d before their mates started egg-laying, resulting in the female remating with a new male. The original males' parentage in the subsequent clutches was evaluated using DNA-fingerprinting. The original males fathered only two out of 46 eggs of those which were not likely to have been fertilized already when the males were removed. The low success of the original males can be attributed to a high within-pair copulation frequency during the assumed fertile period before laying and throughout the laying period, resulting in replacement males fathering most offspring. Thus the success of extra-pair copulations more than 2 d before egg-laying is probably very low. The results are discussed in relation to contrasting results from other mate-switching studies.

Avdelning/ar

  • MEMEG
  • Biodiversity
  • Biologiska institutionen
  • Molekylär ekologi och evolution

Publiceringsår

1996

Språk

Engelska

Sidor

797-801

Publikation/Tidskrift/Serie

Royal Society of London. Proceedings B. Biological Sciences

Volym

263

Issue

1371

Dokumenttyp

Artikel i tidskrift

Förlag

Royal Society Publishing

Ämne

  • Biological Sciences
  • Ecology

Nyckelord

  • frequency
  • extra-pair paternity
  • intraspecific brood parasitism
  • female control
  • dna
  • zebra finch
  • birds
  • copulation
  • cuckoldry

Status

Published

Forskningsgrupp

  • Molecular Ecology and Evolution Lab

ISBN/ISSN/Övrigt

  • ISSN: 1471-2954