Delayed plumage maturation correlates with testosterone levels in Black Redstart Phoenicurus ochruros males
Identifikátory výsledku
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
—
DOI - Digital Object Identifier
—
Alternativní jazyky
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.
Klasifikace
Druh
J<sub>x</sub> - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)
CEP obor
EG - Zoologie
OECD FORD obor
—
Návaznosti výsledku
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
Ostatní
Rok uplatnění
2010
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Acta Ornithologica
ISSN
0001-6454
e-ISSN
—
Svazek periodika
45
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
PL - Polská republika
Počet stran výsledku
7
Strana od-do
—
Kód UT WoS článku
000280387600010
EID výsledku v databázi Scopus
—