J 2016

Melanin and carotenoid ornaments are related to the individual condition in free-living grey partridges (Perdix perdix)

SVOBODOVÁ, Jana, Barbora GABRIELOVÁ, Pavel HYRŠL, Tomáš ALBRECHT, Michal VINKLER et. al.

Basic information

Original name

Melanin and carotenoid ornaments are related to the individual condition in free-living grey partridges (Perdix perdix)

Authors

SVOBODOVÁ, Jana (203 Czech Republic, guarantor), Barbora GABRIELOVÁ (203 Czech Republic), Pavel HYRŠL (203 Czech Republic, belonging to the institution), Tomáš ALBRECHT (203 Czech Republic) and Michal VINKLER (203 Czech Republic)

Edition

Journal of Ornithology, 2016, 0021-8375

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

30105 Physiology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.468

RIV identification code

RIV/00216224:14310/16:00090434

Organization unit

Faculty of Science

UT WoS

000382944500008

Keywords in English

Complement; Condition; dependent sexual signalling; Carotenoid and melanin colouration; Game bird; Haematology; Phytohaemagglutinin

Tags

Změněno: 7/4/2017 10:57, Ing. Andrea Mikešková

Abstract

V originále

According to the viability indicator hypothesis, ornaments of many bird species honestly signal individual quality and health status. In this study, we investigated the health- and stress-indicating capacity of both feather- and skin-based ornamental traits in the grey partridge (Perdix perdix), a vulnerable avian species of the European agricultural landscape. In 50 free-living males, we assessed individual health status by examining the differential and absolute leukocyte counts, absolute erythrocyte count, complement activity, and pro-inflammatory immune responsiveness to phytohaemagglutinin (PHA). We found that males expressing extensive melanin-pigmented breast ornaments developed stronger skin inflammation after PHA stimulation than males with limited ornaments, suggesting that these are high-quality individuals that are able to mount a robust immune response. Furthermore, we found that the UV signal of the carotenoid-pigmented eye patch ornament is negatively related to the absolute immature erythrocyte count and the peripheral blood heterophil/lymphocyte (H/L) ratio, indicating that males with a slow pace of life and healthier males express skin ornaments with higher UV reflectance. Ornamental colouration in grey partridge males may, therefore, serve as a reliable signal of condition (in terms of resource balance) and health (in terms of stress resistance) to females.