Stochastic variation in temperature and food availability impacts growth, but not metabolic rate and exploration in a juvenile amphibian

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00640477" target="_blank" >RIV/60077344:_____/25:00640477 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081766:_____/25:00640477 RIV/60076658:12310/25:43910548

Výsledek na webu

<a href="https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2435.70193" target="_blank" >https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2435.70193</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/1365-2435.70193" target="_blank" >10.1111/1365-2435.70193</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stochastic variation in temperature and food availability impacts growth, but not metabolic rate and exploration in a juvenile amphibian

Popis výsledku v původním jazyce

A substantial proportion of environmental variation is stochastic. While environmental stochasticity plays a key role in the evolution of phenotypic strategies, its short-term effects within generations remain poorly understood. These short-term organismal responses are especially relevant in the context of ongoing climate change, characterized by increasing unpredictability of weather conditions that are manifested directly through stochastic temperature fluctuations and can indirectly cause unpredictable food supply. We investigated how stochastic fluctuations in temperature and food supply affect the growth rate, resting metabolic rate (RMR) and exploratory behaviour in juvenile Alpine newts (Ichthyosaura alpestris). Additionally, we quantified among-individual variation in acute thermal reaction norms (10-20 degrees C) for RMR and exploration to assess their potential role in population-level responses to environmental stochasticity. Exposure to a stochastic food supply reduced growth rate, measured as increases in both body mass and total length. Stochastic temperature fluctuations decreased body mass growth but accelerated growth in total length. Both types of environmental stochasticity had negligible effects on population-mean thermal reaction norms for RMR and exploration. However, the intercepts (both traits) and slopes (exploration only) of these norms varied substantially among individuals. Stochastic food supply and temperature impacted growth depending on measured trait. The observed consistent among-individual variation in thermal reaction norms for RMR and exploration suggests a population-level capacity to cope with environmental unpredictability. Our results show that stochastic environmental variation influences ectotherm phenotypes even over short timescales. A mechanistic understanding of climate change impacts on ectotherm life histories, population dynamics and species interactions will require increased attention to this underexplored component of environmental variation.Read the free for this article on the Journal blog.

Název v anglickém jazyce

Stochastic variation in temperature and food availability impacts growth, but not metabolic rate and exploration in a juvenile amphibian

Popis výsledku anglicky

A substantial proportion of environmental variation is stochastic. While environmental stochasticity plays a key role in the evolution of phenotypic strategies, its short-term effects within generations remain poorly understood. These short-term organismal responses are especially relevant in the context of ongoing climate change, characterized by increasing unpredictability of weather conditions that are manifested directly through stochastic temperature fluctuations and can indirectly cause unpredictable food supply. We investigated how stochastic fluctuations in temperature and food supply affect the growth rate, resting metabolic rate (RMR) and exploratory behaviour in juvenile Alpine newts (Ichthyosaura alpestris). Additionally, we quantified among-individual variation in acute thermal reaction norms (10-20 degrees C) for RMR and exploration to assess their potential role in population-level responses to environmental stochasticity. Exposure to a stochastic food supply reduced growth rate, measured as increases in both body mass and total length. Stochastic temperature fluctuations decreased body mass growth but accelerated growth in total length. Both types of environmental stochasticity had negligible effects on population-mean thermal reaction norms for RMR and exploration. However, the intercepts (both traits) and slopes (exploration only) of these norms varied substantially among individuals. Stochastic food supply and temperature impacted growth depending on measured trait. The observed consistent among-individual variation in thermal reaction norms for RMR and exploration suggests a population-level capacity to cope with environmental unpredictability. Our results show that stochastic environmental variation influences ectotherm phenotypes even over short timescales. A mechanistic understanding of climate change impacts on ectotherm life histories, population dynamics and species interactions will require increased attention to this underexplored component of environmental variation.Read the free for this article on the Journal blog.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10618 - Ecology

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Functional Ecology

ISSN

0269-8463

e-ISSN

1365-2435

Svazek periodika

39

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

3405-3416

Kód UT WoS článku

001592697800001

EID výsledku v databázi Scopus

2-s2.0-105019106329