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.

Interclutch variation in egg size among starlings (Sturnus vulgaris) reflects female condition

Författare

  • Henrik G. Smith
  • Ulf Ottosson
  • T. Ohlsson

Summary, in English

Starlings show considerable variation in egg mass among clutches. Mean clutch egg mass was highly repeatable for females, but few characteristics of females were found to relate to egg mass. Egg mass related weakly to female age, but female age only explained a small part of the variation.

Hatchling mass was strongly correlated with egg mass, but body mass at 14 d of age was unrelated to egg mass. Nestling tarsus length at the same age was related to mean egg mass in one, but not another, year. Egg mass had no effect on hatchability or fledging success, although there was some evidence that brood reduction was more severe among broods hatching from small eggs. Females that had laid larger eggs were in better condition during incubation thus suggesting that high quality females are able to lay larger eggs and to maintain higher body reserves during incubation. This was supported by the observation that females laying smaller eggs were more likely to abandon their nests during incubation.

Avdelning/ar

  • Centrum för miljö- och klimatvetenskap (CEC)
  • Biodiversitet
  • MEMEG
  • Biodiversitet och bevarandevetenskap

Publiceringsår

1993

Språk

Engelska

Sidor

311-316

Publikation/Tidskrift/Serie

Ornis Scandinavica

Volym

24

Dokumenttyp

Artikel i tidskrift

Förlag

Federation of European Neuroscience Societies and Blackwell Publishing Ltd

Ämne

  • Zoology
  • Ecology

Status

Published

Forskningsgrupp

  • Biodiversity and Conservation Science

ISBN/ISSN/Övrigt

  • ISSN: 0030-5693