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

State-behaviour feedbacks between boldness and food intake shape escape responses in fish (Gasterosteus aculeatus) DOI Creative Commons

Isaac Planas‐Sitjà,

Christos C. Ioannou

Communications Biology, Journal Year: 2025, Volume and Issue: 8(1)

Published: Feb. 13, 2025

Abstract Consistent differences in intrinsic state, amplified through state-dependent behaviour, could explain the ubiquity of animal personality variation. Boldness is often positively associated with a high metabolism and food intake. Even though consumption known to compromise oxygen-demanding activities, influence intake on anti-predator escape responses has rarely been considered. By conducting experiments three-spined sticklebacks ( Gasterosteus aculeatus ) setup real-time tracking decoy heron predator, we show that bolder fish benefited from higher than shy fish, reacted faster predator attack when was same before being attacked. However, slowed down responses. These results shine light how fitness bold tactics be balanced wild: reaction impaired by their consumption.

Language: Английский

Citations

0
Energy allocation is revealed while behavioural performance persists after fire disturbance DOI Creative Commons
Karolina Iwińska, Martyna Wirowska, Zbigniew Borowski

et al.

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(5)

Published: Feb. 7, 2024

Metabolic physiology and animal behaviour are often considered to be linked, positively or negatively, according either the performance allocation models. Performance seems predominate over in natural systems, but constraining environmental context may reveal limitations energetically expensive behaviours. Habitat disturbance, such as large-scale fire that burnt wetlands of Biebrza National Park (NE Poland), degrades ecosystems. It arguably reduces food shelter availability, modifies predator-prey interactions, poses a direct threat for survival, wetland specialist root vole Microtus oeconomus. We hypothesized disturbance induces physiology-behaviour co-expression, consequence changed context. repeatedly measured maintenance exercise metabolism, behavioural responses open field, voles from post-fire unburnt locations. Highly repeatable metabolism distance moved during tests correlated positively, relatively labile did not covary with behaviour. At same time, habitat had higher shorter distances than areas. conclude there is prevalence mechanism, simultaneous manifestation context-dependent constraints covariation after disturbance. The last occurs at within-individual level, indicating significance plasticity

Language: Английский

Citations

2
Is personality and its association with energetics sex‐specific in yellow‐necked mice Apodemus flavicollis? DOI Creative Commons

Beau N. Strijker,

Karolina Iwińska,

Bram van der Zalm

et al.

Ecology and Evolution, Journal Year: 2023, Volume and Issue: 13(7)

Published: July 1, 2023

Abstract For the last two decades, behavioral physiologists aimed to explain a plausible covariation between energetics and personality, predicted by “pace‐of‐life syndrome” (POLS) hypothesis. However, results of these attempts are mixed with no definitive answer as which most acknowledged models “performance” or “allocation” predicts consistent among‐individual variation in metabolism repeatable behavior (animal personality). The general conclusion is that association personality rather context‐dependent. Life‐history, behavior, physiology well its can be considered part sexual dimorphism. up now, only few studies demonstrated sex‐specific correlation personality. Therefore, we tested relationships physiological traits single population yellow‐necked mice Apodemus flavicollis context between‐sexes difference this covariation. We hypothesized performance model will proactive males allocation apply females. Behavioral were determined using latency risk‐taking open field tests, whereas basal metabolic rates (BMR) was measured indirect calorimetry. have found positive body mass‐adjusted BMR male mice, support model. females mainly avoidance did not correlate BMR, suggesting essential differences sexes. Most likely, lack convincing at level caused different selection acting on life histories This may result weak for predictions POLS hypothesis when assuming explaining link operates Thus, there need consider sexes evaluate

Language: Английский

Citations

6
Explorative behavior allows the successful finding of ephemeral food resources in the wild DOI Creative Commons
Martyna Wirowska, Karolina Iwińska, Zbigniew Borowski

et al.

Mammal Research, Journal Year: 2023, Volume and Issue: 69(1), P. 89 - 98

Published: Oct. 17, 2023

Abstract The repeatable among-individual variation in behavior (animal personality) is considered to affect fitness. personality traits shaped by complex evolutionary mechanisms involving energy allocation and resource acquisition. However, an association between individual performance gain the natural environment still seems underexplored. aim of our study was test a hypothesis that consistent affects acquisition unpredictable food resources. We predicted more explorative individuals would be finding ephemeral resources with higher probability than those less explorative. quasi-experiment ‘random-walking-feeders’ performed assess use habitat occupied free-ranging arboreal rodents — edible dormice Glis glis . A repeated open field at laboratory conditions conducted whether male show behavior. analysis indicated two main components behavior: exploration boldness, from which only first one thus as component animal personality. feeder increased exploration, independently age body size. results indicate can adaptive trait improves suggest behavioral within populations persists due usage distinct foraging strategies face fluctuations availability.

Language: Английский

Citations

4
Heterothermy use in winter is associated with reduced litter size during following breeding season DOI Creative Commons
Jan S. Boratyński, Karolina Iwińska, Karol Zub

et al.

Frontiers in Ecology and Evolution, Journal Year: 2024, Volume and Issue: 12

Published: March 4, 2024

Heterothermy is considered to be the most effective energy-saving strategy improving survival under natural conditions. Interspecific studies suggest that this also associated with reduced reproductive output. Yet little known about consequences of heterothermy use at intraspecific level and thus its repercussions for microevolutionary processes. Moreover, as yet no study has aimed test if litter size juvenile mass are affected by torpor in wild captured animals undemanding laboratory Here we tested hypothesis variation different successes, being result evolution distinct life histories. We predicted winter negatively correlates body during subsequent breeding season. To prediction, used yellow-necked mice from a population which individuals consistently differ their winter. measured (head width) mass, basal metabolic rate, well metabolism temperature fasting-induced caught Phenotyped were bred summer selectively – males females similar characteristics paired, least heterothermic. Dam size, but not metabolism, was positively correlated (but mass). However, when accounting relationship, while average given couple. Our indicates specific life-history strategies arising fundamental evolutionary trade-off between reproduction.

Language: Английский

Citations

1
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