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Early breeding teal Anas crecca use the best lakes and have the highest reproductive success
Kristianstad University, Department of Mathematics and Science. (Akvatisk biologi och kemi)
Department of Applied Biology, University of Helsinki.
Finnish Game and Fisheries Research Institute, Joensuu Game and Fisheries Research.
Kristianstad University, Department of Mathematics and Science. (Akvatisk biologi och kemi)ORCID iD: 0000-0003-2345-3953
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2005 (English)In: Annales Zoologici Fennici, ISSN 0003-455X, Vol. 42, no 1, 37-43 p.Article in journal (Refereed) Published
Abstract [en]

Teal (Anas crecca) broods were studied in 1988-2003 in a boreal watershed comprising 51 permanent wetlands. Brood size of near-fledged ducklings was negatively related to the hatching date, i.e. early pairs had higher reproductive success than late pairs. However, brood size of newly hatched ducklings was not related to the hatching date, implying that the advantage of early breeding is due to processes operating during the brood stage rather than during nesting. Half of the lakes never produced a brood, and among the 26 lakes that actually did, two `preferred' lakes generated 44% of the broods and 55% of the near-fledged ducklings. Early broods were over-represented on such `preferred' lakes, and late broods over-represented on `less preferred' lakes. Our study suggests that lake selection and early nesting may have important fitness consequences in teal.

Place, publisher, year, edition, pages
2005. Vol. 42, no 1, 37-43 p.
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:hkr:diva-711ISI: 000227397200003OAI: oai:DiVA.org:hkr-711DiVA: diva2:210564
Available from: 2009-04-02 Created: 2009-04-02 Last updated: 2014-06-05Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
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