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

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/EH22_010%2F0008118" target="_blank" >EH22_010/0008118: Modelování ekologických nik k definování role bazálního metabolismu v lokální adaptaci na změnu klimatu u Apodemus sylvaticus</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Experimental Biology

ISSN

0022-0949

e-ISSN

1477-9145

Svazek periodika

228

Číslo periodika v rámci svazku

20

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

jeb251323

Kód UT WoS článku

001611838400003

EID výsledku v databázi Scopus

2-s2.0-105019721602