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

Result code in 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>

Alternative codes found

RIV/60076658:12310/10:00011777

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

<a href="/en/project/IAA601410803" target="_blank" >IAA601410803: Recognition of predators and other dangerous organisms by terrestrial vertebrates</a><br>

Continuities

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

Publication year

2010

Confidentiality

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

Name of the periodical

Acta Ornithologica

ISSN

0001-6454

e-ISSN

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Volume of the periodical

45

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

7

Pages from-to

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UT code for WoS article

000280387600010

EID of the result in the Scopus database

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