Evidence of phenotypic correlation between exploration activity and resting metabolic rate among-populations across an elevation gradient in a small rodent species

Mikko Lehto Hürlimann, Julien G. A. Martin, Pierre Bize (Corresponding Author)

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Abstract

Behavior and metabolism are frontline reactions to environmental challenges that can covary in their response through at least two mechanisms. First, natural selection can generate correlation in phenotype among distinct populations if they are exposed to a common selective force. Thus, metabolism and behavior can exhibit phenotypic correlation among populations when responding (independently from each other) to co-varying selective forces. Second, because behavioral responses are energy demanding, variation in energy acquisition or allocation among individuals of the same population can also generate, respectively, a positive or negative correlation within populations. To address this issue, we investigated among- and within-population (co-)variations in exploration activity (EA) and resting metabolic rate (RMR) of adult common voles (Microtus arvalis) issued from four high elevation populations (>1400m a.s.l.) and five low elevation populations (<520m a.s.l.). Individuals were acclimatized for at least one month to the same laboratory conditions before being tested for EA and RMR. Voles from high elevation populations were more explorative and they had higher RMR than their counterparts from low elevation populations. The similar effects of elevation on EA and RMR accounted for a correlation of 0.28 [0.064; 0.658] between EA and RMR across low and high elevation populations. We found no evidence of a withinpopulation correlation between EA and RMR. More work relying, for instance, on repeated sampling or experimental selection is nonetheless needed to confirm a lack of integration between metabolism and behavior at the individual level. Our results highlight the importance of co-varying selective forces in generating among-population phenotypic correlation between EA and RMR in this small rodent species.
Original languageEnglish
Article number131
JournalBehavioral Ecology and Sociobiology
Volume73
Early online date28 Aug 2019
DOIs
Publication statusPublished - Sep 2019

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resting metabolic rate
phenotypic correlation
rodent
rodents
metabolism
Microtus arvalis
behavioral response
rate
natural selection
energy
phenotype
sampling

Keywords

  • personality
  • metabolism
  • natural selection
  • ecological gradient
  • wild-derived mammals
  • phenotypic covariation
  • Wild-derived mammals
  • Ecological gradient
  • Phenotypic covariation
  • Personality
  • Metabolism
  • Natural selection
  • PERSONALITY
  • BEHAVIOR
  • PHYSIOLOGICAL-RESPONSES
  • INDIVIDUAL VARIATION
  • DEER MICE
  • SMALL MAMMALS
  • ENERGY-EXPENDITURE
  • EVOLUTIONARY SIGNIFICANCE
  • BASAL
  • LIFE

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

Cite this

@article{84f0eefa039e46199029b8e8c86a1862,
title = "Evidence of phenotypic correlation between exploration activity and resting metabolic rate among-populations across an elevation gradient in a small rodent species",
abstract = "Behavior and metabolism are frontline reactions to environmental challenges that can covary in their response through at least two mechanisms. First, natural selection can generate correlation in phenotype among distinct populations if they are exposed to a common selective force. Thus, metabolism and behavior can exhibit phenotypic correlation among populations when responding (independently from each other) to co-varying selective forces. Second, because behavioral responses are energy demanding, variation in energy acquisition or allocation among individuals of the same population can also generate, respectively, a positive or negative correlation within populations. To address this issue, we investigated among- and within-population (co-)variations in exploration activity (EA) and resting metabolic rate (RMR) of adult common voles (Microtus arvalis) issued from four high elevation populations (>1400m a.s.l.) and five low elevation populations (<520m a.s.l.). Individuals were acclimatized for at least one month to the same laboratory conditions before being tested for EA and RMR. Voles from high elevation populations were more explorative and they had higher RMR than their counterparts from low elevation populations. The similar effects of elevation on EA and RMR accounted for a correlation of 0.28 [0.064; 0.658] between EA and RMR across low and high elevation populations. We found no evidence of a withinpopulation correlation between EA and RMR. More work relying, for instance, on repeated sampling or experimental selection is nonetheless needed to confirm a lack of integration between metabolism and behavior at the individual level. Our results highlight the importance of co-varying selective forces in generating among-population phenotypic correlation between EA and RMR in this small rodent species.",
keywords = "personality, metabolism, natural selection, ecological gradient, wild-derived mammals, phenotypic covariation, Wild-derived mammals, Ecological gradient, Phenotypic covariation, Personality, Metabolism, Natural selection, PERSONALITY, BEHAVIOR, PHYSIOLOGICAL-RESPONSES, INDIVIDUAL VARIATION, DEER MICE, SMALL MAMMALS, ENERGY-EXPENDITURE, EVOLUTIONARY SIGNIFICANCE, BASAL, LIFE",
author = "H{\"u}rlimann, {Mikko Lehto} and Martin, {Julien G. A.} and Pierre Bize",
note = "Open Access via Springer Compact Agreement Acknowledgments. We are grateful to Raphaelle Flint and J{\'e}remie Projer for their help in the video analyses, and to Laelia Maumary, J{\'e}zaelle Rufener and Jason Buser for their help in the animal room. Comments provided by two anonymous referees greatly helped to improve our manuscript. Funding source. This research was support by a grant to PB (n° 31003A_124988) from the Swiss National Science Foundation",
year = "2019",
month = "9",
doi = "10.1007/s00265-019-2740-6",
language = "English",
volume = "73",
journal = "Behavioral Ecology and Sociobiology",
issn = "0340-5443",
publisher = "Springer",

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T1 - Evidence of phenotypic correlation between exploration activity and resting metabolic rate among-populations across an elevation gradient in a small rodent species

AU - Hürlimann, Mikko Lehto

AU - Martin, Julien G. A.

AU - Bize, Pierre

N1 - Open Access via Springer Compact Agreement Acknowledgments. We are grateful to Raphaelle Flint and Jéremie Projer for their help in the video analyses, and to Laelia Maumary, Jézaelle Rufener and Jason Buser for their help in the animal room. Comments provided by two anonymous referees greatly helped to improve our manuscript. Funding source. This research was support by a grant to PB (n° 31003A_124988) from the Swiss National Science Foundation

PY - 2019/9

Y1 - 2019/9

N2 - Behavior and metabolism are frontline reactions to environmental challenges that can covary in their response through at least two mechanisms. First, natural selection can generate correlation in phenotype among distinct populations if they are exposed to a common selective force. Thus, metabolism and behavior can exhibit phenotypic correlation among populations when responding (independently from each other) to co-varying selective forces. Second, because behavioral responses are energy demanding, variation in energy acquisition or allocation among individuals of the same population can also generate, respectively, a positive or negative correlation within populations. To address this issue, we investigated among- and within-population (co-)variations in exploration activity (EA) and resting metabolic rate (RMR) of adult common voles (Microtus arvalis) issued from four high elevation populations (>1400m a.s.l.) and five low elevation populations (<520m a.s.l.). Individuals were acclimatized for at least one month to the same laboratory conditions before being tested for EA and RMR. Voles from high elevation populations were more explorative and they had higher RMR than their counterparts from low elevation populations. The similar effects of elevation on EA and RMR accounted for a correlation of 0.28 [0.064; 0.658] between EA and RMR across low and high elevation populations. We found no evidence of a withinpopulation correlation between EA and RMR. More work relying, for instance, on repeated sampling or experimental selection is nonetheless needed to confirm a lack of integration between metabolism and behavior at the individual level. Our results highlight the importance of co-varying selective forces in generating among-population phenotypic correlation between EA and RMR in this small rodent species.

AB - Behavior and metabolism are frontline reactions to environmental challenges that can covary in their response through at least two mechanisms. First, natural selection can generate correlation in phenotype among distinct populations if they are exposed to a common selective force. Thus, metabolism and behavior can exhibit phenotypic correlation among populations when responding (independently from each other) to co-varying selective forces. Second, because behavioral responses are energy demanding, variation in energy acquisition or allocation among individuals of the same population can also generate, respectively, a positive or negative correlation within populations. To address this issue, we investigated among- and within-population (co-)variations in exploration activity (EA) and resting metabolic rate (RMR) of adult common voles (Microtus arvalis) issued from four high elevation populations (>1400m a.s.l.) and five low elevation populations (<520m a.s.l.). Individuals were acclimatized for at least one month to the same laboratory conditions before being tested for EA and RMR. Voles from high elevation populations were more explorative and they had higher RMR than their counterparts from low elevation populations. The similar effects of elevation on EA and RMR accounted for a correlation of 0.28 [0.064; 0.658] between EA and RMR across low and high elevation populations. We found no evidence of a withinpopulation correlation between EA and RMR. More work relying, for instance, on repeated sampling or experimental selection is nonetheless needed to confirm a lack of integration between metabolism and behavior at the individual level. Our results highlight the importance of co-varying selective forces in generating among-population phenotypic correlation between EA and RMR in this small rodent species.

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KW - metabolism

KW - natural selection

KW - ecological gradient

KW - wild-derived mammals

KW - phenotypic covariation

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KW - Phenotypic covariation

KW - Personality

KW - Metabolism

KW - Natural selection

KW - PERSONALITY

KW - BEHAVIOR

KW - PHYSIOLOGICAL-RESPONSES

KW - INDIVIDUAL VARIATION

KW - DEER MICE

KW - SMALL MAMMALS

KW - ENERGY-EXPENDITURE

KW - EVOLUTIONARY SIGNIFICANCE

KW - BASAL

KW - LIFE

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U2 - 10.1007/s00265-019-2740-6

DO - 10.1007/s00265-019-2740-6

M3 - Article

VL - 73

JO - Behavioral Ecology and Sociobiology

JF - Behavioral Ecology and Sociobiology

SN - 0340-5443

M1 - 131

ER -