The role of blunt egg pole characteristics for recognition of eggs in the song thrush (Turdus philomelos)

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The role of blunt egg pole characteristics for recognition of eggs in the song thrush (Turdus philomelos)

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

The role of blunt egg pole characteristics for recognition of eggs in the song thrush (Turdus philomelos)

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Behaviour

ISSN

0005-7959

e-ISSN

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Svazek periodika

147

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

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Kód UT WoS článku

000277127600003

EID výsledku v databázi Scopus

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