Muži ovlivněný sex mimopárových mladých u sociálně monogamního Lanius collurio

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F08%3A00009718" target="_blank" >RIV/60076658:12310/08:00009718 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Male-biased sex of extra pair young in the socially monogamous Red-backed Shrike Lanius collurio

Popis výsledku v původním jazyce

Females of many socially monogamous bird species engage in - or even actively seek - copulations Outside their social pair bond. However, in socially monogamous birds with low breeding abundance, such as the Red-backed Shrike, extra-pair paternity (EPP)was thought to be an exceptional and random incident. Drawing on samples collected in an unusually dense Red-backed Shrike Population in the Czech Republic, we show through DNA microsatellite typing that among 65 chicks from 15 nests, 10 individuals (26.5%) had been sired by males other than the nest-attending social mate. All 10 extra pair young were of male sex. In all cases, genetic fathers of extra pair young stemmed from neighbouring territories. Extra pair fathers had significantly longer tarsi than social mates, indicating that female choice was a function of age-class dependent male body size. Our findings support sex allocation theory, which Suggests that promiscuous females mating with higher quality males should produce mostl

Název v anglickém jazyce

Male-biased sex of extra pair young in the socially monogamous Red-backed Shrike Lanius collurio

Popis výsledku anglicky

Females of many socially monogamous bird species engage in - or even actively seek - copulations Outside their social pair bond. However, in socially monogamous birds with low breeding abundance, such as the Red-backed Shrike, extra-pair paternity (EPP)was thought to be an exceptional and random incident. Drawing on samples collected in an unusually dense Red-backed Shrike Population in the Czech Republic, we show through DNA microsatellite typing that among 65 chicks from 15 nests, 10 individuals (26.5%) had been sired by males other than the nest-attending social mate. All 10 extra pair young were of male sex. In all cases, genetic fathers of extra pair young stemmed from neighbouring territories. Extra pair fathers had significantly longer tarsi than social mates, indicating that female choice was a function of age-class dependent male body size. Our findings support sex allocation theory, which Suggests that promiscuous females mating with higher quality males should produce mostl

Druh

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

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Acta Ornithologica

ISSN

0001-6454

e-ISSN

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Svazek periodika

43

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000262817800016

EID výsledku v databázi Scopus

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