Comparative analysis of plasma steroid hormone levels reveals
lower concentrations in Afrotropical than European temperate
zone passerines

J 2026

Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines

KAUZAL, Ondrej; Oldrich TOMASEK; Krystof HORAK; Tereza KAUZALOVA; Judith M. POUADJEU et al.

Základní údaje

Originální název

Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines

Autoři

KAUZAL, Ondrej; Oldrich TOMASEK; Krystof HORAK; Tereza KAUZALOVA; Judith M. POUADJEU; Jacques Esembe CHI; Francis Teke MANI; Martin MOOS; Zuzana HOCHMANOVÁ; Zdeněk ŠIMEK a Tomas ALBRECHT

Vydání

Zoological Journal of the Linnean Society, Oxford, Oxford University Press, 2026, 0024-4082

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10613 Zoology

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.800 v roce 2024

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

comparative analysis; testosterone; corticosterone; life history; pace of life syndromes; temperate and tropical birds; latitude; stress response

Štítky

143180, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 12. 5. 2026 10:49, Mgr. Michaela Hylsová, Ph.D.

Anotace

V originále

Latitudinal changes in environmental conditions shape the evolution of avian life-history traits: tropical bird species typically exhibiting prolonged breeding seasons, a slower pace of life, lower annual investment in reproduction, and increased annual survival compared to their temperate counterparts. Major shifts in physiology, reflecting these differences, are expected to be mediated by endocrine regulation, yet comparative data on the sources of interspecific variation in hormone concentrations remain sparse, especially outside the Nearctic-Neotropic system. We examined variation in two key steroid hormones, corticosterone and testosterone, across 100 passerine species from Europe and the Afrotropics, sampled using standardized field protocols. Baseline levels of both hormones were consistently lower in tropical species, as expected. While stress-induced corticosterone reactivity did not differ between latitudes, it declined with migration distance. Testosterone levels were higher in males than females and declined with migration distance. In tropical species, neither hormone was associated with elevation, another source of environmental variation, but both varied during the breeding cycle, challenging the view of tropical aseasonality. This study broadens the perspective on endocrine correlates of avian life-history evolution by testing their generality in an understudied Afrotropical-Palaearctic system. The results support the hypothesis that steroid hormone profiles co-evolve with latitude.

Návaznosti

GA17-24782S, projekt VaV

Název: Latitudinální a altitudinální trendy v pace-of-life syndromech Afrotropických a Evropských pěvců

Investor: Grantová agentura ČR, Latitudinální a altitudinální trendy v pace-of-life syndromech Afrotropických a Evropských ptáků

Citovat

KAUZAL, Ondrej; Oldrich TOMASEK; Krystof HORAK; Tereza KAUZALOVA; Judith M. POUADJEU; Jacques Esembe CHI; Francis Teke MANI; Martin MOOS; Zuzana HOCHMANOVÁ; Zdeněk ŠIMEK a Tomas ALBRECHT. Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines. Zoological Journal of the Linnean Society. Oxford: Oxford University Press, 2026, roč. 206, č. 3, s. 1-12. ISSN 0024-4082. Dostupné z: https://doi.org/10.1093/zoolinnean/zlag038.

@article{2571806,
   author = {Kauzal, Ondrej and Tomasek, Oldrich and Horak, Krystof and Kauzalova, Tereza and Pouadjeu, Judith M. and Chi, Jacques Esembe and Mani, Francis Teke and Moos, Martin and Hochmanová, Zuzana and Šimek, Zdeněk and Albrecht, Tomas},
   article_location = {Oxford},
   article_number = {3},
   doi = {https://doi.org/10.1093/zoolinnean/zlag038},
   keywords = {comparative analysis; testosterone; corticosterone; life history; pace of life syndromes; temperate and tropical birds; latitude; stress response},
   language = {eng},
   issn = {0024-4082},
   journal = {Zoological Journal of the Linnean Society},
   title = {Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines},
   url = {https://academic.oup.com/zoolinnean/article/206/3/zlag038/8523959},
   volume = {206},
   year = {2026}
}

TY  - JOUR
ID  - 2571806
AU  - Kauzal, Ondrej - Tomasek, Oldrich - Horak, Krystof - Kauzalova, Tereza - Pouadjeu, Judith M. - Chi, Jacques Esembe - Mani, Francis Teke - Moos, Martin - Hochmanová, Zuzana - Šimek, Zdeněk - Albrecht, Tomas
PY  - 2026
TI  - Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines
JF  - Zoological Journal of the Linnean Society
VL  - 206
IS  - 3
SP  - 1-12
EP  - 1-12
PB  - Oxford University Press
SN  - 00244082
KW  - comparative analysis
KW  - testosterone
KW  - corticosterone
KW  - life history
KW  - pace of life syndromes
KW  - temperate and tropical birds
KW  - latitude
KW  - stress response
UR  - https://academic.oup.com/zoolinnean/article/206/3/zlag038/8523959
N2  - Latitudinal changes in environmental conditions shape the evolution of avian life-history traits: tropical bird species typically exhibiting prolonged breeding seasons, a slower pace of life, lower annual investment in reproduction, and increased annual survival compared to their temperate counterparts. Major shifts in physiology, reflecting these differences, are expected to be mediated by endocrine regulation, yet comparative data on the sources of interspecific variation in hormone concentrations remain sparse, especially outside the Nearctic-Neotropic system. We examined variation in two key steroid hormones, corticosterone and testosterone, across 100 passerine species from Europe and the Afrotropics, sampled using standardized field protocols. Baseline levels of both hormones were consistently lower in tropical species, as expected. While stress-induced corticosterone reactivity did not differ between latitudes, it declined with migration distance. Testosterone levels were higher in males than females and declined with migration distance. In tropical species, neither hormone was associated with elevation, another source of environmental variation, but both varied during the breeding cycle, challenging the view of tropical aseasonality. This study broadens the perspective on endocrine correlates of avian life-history evolution by testing their generality in an understudied Afrotropical-Palaearctic system. The results support the hypothesis that steroid hormone profiles co-evolve with latitude.
ER  -

KAUZAL, Ondrej; Oldrich TOMASEK; Krystof HORAK; Tereza KAUZALOVA; Judith M. POUADJEU; Jacques Esembe CHI; Francis Teke MANI; Martin MOOS; Zuzana HOCHMANOVÁ; Zdeněk ŠIMEK a Tomas ALBRECHT. Comparative analysis of plasma steroid hormone levels reveals lower concentrations in Afrotropical than European temperate zone passerines. \textit{Zoological Journal of the Linnean Society}. Oxford: Oxford University Press, 2026, roč.~206, č.~3, s.~1-12. ISSN~0024-4082. Dostupné z: https://doi.org/10.1093/zoolinnean/zlag038.

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