Delayed plumage maturation correlates with testosterone levels in Black Redstart Phoenicurus ochruros males

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F10%3A10081635" target="_blank" >RIV/00216208:11310/10:10081635 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12310/10:00011777

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Delayed plumage maturation correlates with testosterone levels in Black Redstart Phoenicurus ochruros males

Popis výsledku v původním jazyce

Black Redstart males usually have female-like (olive-brown) feathers during their first breeding season This subadult coloration contrasts sharply with the grey and black feathers of the adults To examine the proximate mechanisms of this phenomenon, known as delayed plumage maturation, we assessed levels of testosterone in circulating blood of subadult and adult males captured in Prague, Czech Republic Analysis of 23 blood samples collected during the molt, i.e, at the time of plumage development, revealed significantly higher testosterone levels in males molting to the adult color than in those molting to the subadult one This may suggest a certain role played by testosterone in the regulation of delayed plumage maturation However, there were no marked differences between males of different coloration and/or age during the breeding season Analysis of 46 blood samples collected outside the molting period confirmed the seasonal testosterone pattern typical of most temperate passerines.

Název v anglickém jazyce

Delayed plumage maturation correlates with testosterone levels in Black Redstart Phoenicurus ochruros males

Popis výsledku anglicky

Black Redstart males usually have female-like (olive-brown) feathers during their first breeding season This subadult coloration contrasts sharply with the grey and black feathers of the adults To examine the proximate mechanisms of this phenomenon, known as delayed plumage maturation, we assessed levels of testosterone in circulating blood of subadult and adult males captured in Prague, Czech Republic Analysis of 23 blood samples collected during the molt, i.e, at the time of plumage development, revealed significantly higher testosterone levels in males molting to the adult color than in those molting to the subadult one This may suggest a certain role played by testosterone in the regulation of delayed plumage maturation However, there were no marked differences between males of different coloration and/or age during the breeding season Analysis of 46 blood samples collected outside the molting period confirmed the seasonal testosterone pattern typical of most temperate passerines.

Druh

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

CEP obor

EG - Zoologie

OECD FORD obor

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Projekt

<a href="/cs/project/IAA601410803" target="_blank" >IAA601410803: Rozpoznávání predátorů a jiných nebezpečných organismů terestrickými obratlovci</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2010

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

45

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

PL - Polská republika

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

000280387600010

EID výsledku v databázi Scopus

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