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The role of blunt egg pole characteristics for recognition of eggs in the song thrush (Turdus philomelos)
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SYSNO ASEP 0340433 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title The role of blunt egg pole characteristics for recognition of eggs in the song thrush (Turdus philomelos) Author(s) Polačiková, Lenka (UBO-W) RID, SAI
Stokke, B. G. (NO)
Procházka, Petr (UBO-W) RID, ORCID, SAI
Honza, Marcel (UBO-W) RID, SAI, ORCID
Moksnes, A. (NO)
Roskaft, E. (NO)Number of authors 6 Source Title Behaviour. - : Brill - ISSN 0005-7959
Roč. 147, č. 4 (2010), s. 465-478Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords brood parasitism ; egg discrimination ; eggshell characteristics ; recognition cues ; rejection behaviour Subject RIV EG - Zoology R&D Projects GD524/05/H536 GA ČR - Czech Science Foundation (CSF) LC06073 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z60930519 - UBO-W (2005-2011) UT WOS 000277127600003 EID SCOPUS 77949559151 DOI 10.1163/000579509X12584427339575 Annotation Colour and speckling of avian eggshells play important roles in egg recognition behaviour. However, only a few studies have paid attention to whether specific parts of eggs may be more important than others in rejection decisions by hosts. We hypothesised that the blunt pole in song thrush eggs possesses important cues for recognition of own eggs because this is the most visible part of the egg in the nest. We examined host response towards conspecific eggs painted blue either at the blunt or sharp poles, and used unpainted conspecific eggs as a control. We found, as predicted, that the experimental eggs painted blue at the blunt poles were rejected significantly more often than the experimental eggs unpainted at this pole. Rejection rates of experimental eggs were higher with increasing differences in number of spots between the two poles of own eggs. Our results confirmed that the essential cues used for egg discrimination in song thrushes are found at the blunt egg pole. Workplace Institute of Vertebrate Biology Contact Hana Slabáková, slabakova@ivb.cz, Tel.: 543 422 524 Year of Publishing 2011
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