Among- and within-individual mechanisms of energy budgets in a wild mammal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985904%3A_____%2F25%3A00642137" target="_blank" >RIV/67985904:_____/25:00642137 - isvavai.cz</a>

Result on the web

<a href="https://journals.biologists.com/jeb/article/228/20/jeb251323/369570/Among-and-within-individual-mechanisms-of-energy" target="_blank" >https://journals.biologists.com/jeb/article/228/20/jeb251323/369570/Among-and-within-individual-mechanisms-of-energy</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1242/jeb.251323" target="_blank" >10.1242/jeb.251323</a>

Result language

angličtina

Original language name

Among- and within-individual mechanisms of energy budgets in a wild mammal

Original language description

Energy is an essential ecological resource, needed to fulfill all organismal processes. In seasonal environments, the energy budgets of animals are temporally restrained, exposing individuals to allocation trade-offs. To test between allocation and performance bioenergetic mechanisms in a wild endotherm (Apodemus sylvaticus), we repeatedly determined individuals' limits to energy budgets, aerobic capacity (V<INF>O<INF>2</INF>,max</INF>) and maintenance costs (BMR), and estimated their within- and among-individual correlations. We consistently found that intra-individually, V<INF>O<INF>2</INF>,max</INF> (tau=0.29-0.59) reduced in winter (by similar to 15%), whereas BMR (tau=0.40-0.44) was invariable in females (<1.2%) and increased in males in winter (by 7.7%). In females, the budget components were positively correlated at the among-individual level (r<INF>ind</INF>=0.56) and negatively at the within-individual level (r<INF>e</INF>=-0.32), reflecting simultaneous operation of the performance and allocation mechanisms, respectively. In males, V<INF>O<INF>2</INF>,max</INF> and BMR were expressed independently (r approximate to-0.05), with their budgets 41% more plastic than in females. Our results corroborate the performance mechanisms and parental provisioning model for the evolution of endothermy, but only in females and conditioned by seasonal trade-offs. We conclude that bioenergetic mechanisms are not only condition dependent, but also that their ecological context is sexually dimorphic, and their synchronous operation may mask overall phenotypic covariation among components of energy budgets.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10603 - Genetics and heredity (medical genetics to be 3)

Project

<a href="/en/project/EH22_010%2F0008118" target="_blank" >EH22_010/0008118: Ecological niche modeling to define the role of basal metabolic rate in local adaptation to climate change in Apodemus Sylvaticus</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Experimental Biology

ISSN

0022-0949

e-ISSN

1477-9145

Volume of the periodical

228

Issue of the periodical within the volume

20

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

jeb251323

UT code for WoS article

001611838400003

EID of the result in the Scopus database

2-s2.0-105019721602