Predation can shape the cascade interplay between heterothermy, exploration and maintenance metabolism under high food availability DOI Creative Commons
Jan S. Boratyński, Karolina Iwińska, Martyna Wirowska

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(6)

Published: June 1, 2024

Abstract Maintenance metabolism as the minimum energy expenditure needed to maintain homeothermy (a high and stable body temperature, T b ), reflects magnitude of metabolic machinery associated costs self‐maintenance in endotherms (organisms able produce heat endogenously). Therefore, it can interact with most, if not all, organismal functions, including behavior–fitness linkage. Many endothermic animals avoid maintaining temporally reduce by entering heterothermic states like torpor, most effective energy‐saving strategy. Variations BMR, behavior, torpor use are considered be shaped food resources, but those conclusions based on research studying these traits isolation. We tested effect ecological contexts (food availability predation risk) interplay between maintenance homeothermy, heterothermy, exploration a wild mammal—the yellow‐necked mouse. measured basal rate (BMR) using respirometry, distance moved (exploration) open‐field test, variation (heterothermy) during short‐term fasting captured at different locations known natural predator presence, or without supplementary resources. found that winter, heterothermy (but BMR) negatively correlated (determined autumn). Supplementary feeding increased mouse density, risk finally had positive BMR exploration). The path analysis testing plausible causal relationships studied indicated elevated which turn affected exploration, positively BMR. Our study indicates adaptive is compensation strategy for balancing budget experiencing low availability. This also suggests under environmental challenges risk, an predicts behavioral expression better than homeothermy.

Language: Английский

The Presence of a Shelter in an Open Field Test Has Differential Effects on the Behavior and Stress Response of Two Mouse Species DOI Creative Commons
Rita I. Monarca, Ricardo Silva, Sofia I. Gabriel

et al.

Journal of Experimental Zoology Part A Ecological and Integrative Physiology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 27, 2025

ABSTRACT The open field test (OFT) is frequently used in research to assess anxiety‐like behavior and locomotor activity. Its simple design can lead the misconception that it a standardized procedure comparable between laboratories. However, some modifications setup cause changes behavior. Different species might also react differently introduced. There thus need for better understanding of impact their value question. Here, we tested two closely related mouse species, Mus musculus spretus , an OFT with without presence shelter. We assessed exploratory through analysis multiple behavioral traits, stress response measurement circulating cortisol levels. Both had elevated levels during contrast control animals which were not exposed OFT. While shelter increased both M. but showed reduction Also, other measured behaviors show rather proactive coping strategy commensal reactive non‐commensal . Our study revealed strong species‐specific influence on resulting mice, illustrating importance designs account characteristics under study. addition be considered improve experimental results by promoting animal welfare.

Language: Английский

Citations

0
Predation can shape the cascade interplay between heterothermy, exploration and maintenance metabolism under high food availability DOI Creative Commons
Jan S. Boratyński, Karolina Iwińska, Martyna Wirowska

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(6)

Published: June 1, 2024

Abstract Maintenance metabolism as the minimum energy expenditure needed to maintain homeothermy (a high and stable body temperature, T b ), reflects magnitude of metabolic machinery associated costs self‐maintenance in endotherms (organisms able produce heat endogenously). Therefore, it can interact with most, if not all, organismal functions, including behavior–fitness linkage. Many endothermic animals avoid maintaining temporally reduce by entering heterothermic states like torpor, most effective energy‐saving strategy. Variations BMR, behavior, torpor use are considered be shaped food resources, but those conclusions based on research studying these traits isolation. We tested effect ecological contexts (food availability predation risk) interplay between maintenance homeothermy, heterothermy, exploration a wild mammal—the yellow‐necked mouse. measured basal rate (BMR) using respirometry, distance moved (exploration) open‐field test, variation (heterothermy) during short‐term fasting captured at different locations known natural predator presence, or without supplementary resources. found that winter, heterothermy (but BMR) negatively correlated (determined autumn). Supplementary feeding increased mouse density, risk finally had positive BMR exploration). The path analysis testing plausible causal relationships studied indicated elevated which turn affected exploration, positively BMR. Our study indicates adaptive is compensation strategy for balancing budget experiencing low availability. This also suggests under environmental challenges risk, an predicts behavioral expression better than homeothermy.

Language: Английский

Citations

0