Individual variation in thermal reaction norms reveals metabolic-behavioral relationships in an ectotherm

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081766%3A_____%2F22%3A00556883" target="_blank" >RIV/68081766:_____/22:00556883 - isvavai.cz</a>

Alternative codes found

RIV/00216224:14310/22:00125771

Result on the web

<a href="https://www.frontiersin.org/articles/10.3389/fevo.2022.850941/full" target="_blank" >https://www.frontiersin.org/articles/10.3389/fevo.2022.850941/full</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fevo.2022.850941" target="_blank" >10.3389/fevo.2022.850941</a>

Result language

angličtina

Original language name

Individual variation in thermal reaction norms reveals metabolic-behavioral relationships in an ectotherm

Original language description

Ectothermic organisms respond to rapid environmental change through a combination of behavioral and physiological adjustments. As behavioral and physiological traits are often functionally linked, an effective ectotherm response to environmental perturbation will depend on the direction and magnitude of their association. The role of various modifiers in behavioral-physiological relationships remains largely unexplored. We applied a repeated-measures approach to examine the influence of body temperature and individual variation on the link between resting metabolic rate (RMR) and exploratory locomotor activity (ELA) in juvenile Alpine newts, Ichthyosaura alpestris. We analyzed trait relationships at two body temperatures separately and as parameters, intercepts and slopes, of thermal reaction norms for both traits. Body temperature affected the level of detectable among-individual variation in two different directions. Among-individual variation in ELA was detected at 12°C, while RMR was repeatable at 22°C. We found no support for a link between RMR and ELA at either temperature. While analysis of intercepts revealed among-individual variation in both traits, among-individual variation in slopes was detected in RMR only. Intercepts were positively associated at the individual, but not the whole-phenotypic, level. For ELA, the target of selection should be individual trait values across temperatures, rather than their thermal sensitivities. The positive association between intercepts of thermal reaction norms for ELA and RMR suggests that phenotypic selection acts on both traits in a correlated fashion. Measurements at one body temperature and within-individual variation hide the metabolic-behavioral relations. We conclude that correlative studies on flexible behavioral and physiological traits in ectotherms require repeated measurement at two or more body temperatures in order to avoid misleading results. This approach is needed to fully understand ectotherm responses to environmental change and its impact on their population dynamics.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10618 - Ecology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Frontiers in Ecology and Evolution

ISSN

2296-701X

e-ISSN

2296-701X

Volume of the periodical

10

Issue of the periodical within the volume

APR

Country of publishing house

CH - SWITZERLAND

Number of pages

10

Pages from-to

850941

UT code for WoS article

000788000100001

EID of the result in the Scopus database

2-s2.0-85128475366