Effects of climate on oxygen consumption and energy intake of chromosomally divergent populations of the House Mouse (Mus musculus domesticus) from the island of Madeira (North Atlantic, Portugal)

M L Mathias, A C Nunes, C C Marques, J C Auffray, J Britton-Davidian, G Ganem, I Gunduz, M G Ramalhinho, J B Searle, John Roger Speakman

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We explored the effects of climatic variables (mean altitude, mean daily winter temperature, mean daily summer temperature, mean annual precipitation and days of precipitation per year) on energetic parameters (food intake and resting oxygen consumption) in six Robertsonian chromosomal races and hybrid populations of House Mice (Mus musculus domesticus) collected throughout the island of Madeira in the North Atlantic.
Food energy intake and resting metabolism (oxygen consumption) were measured, in 59 non-reproducing adult males trapped in April-September 1998 and June 1999 and maintained in captivity for at least 3 weeks prior to measurements.
Mean daily energy intake of Robertsonian mice varied between 25.3 kJ day(-1) in race S. Vicente (2n = 25-27) and 34.6 kJ day(-1) in race Achadas da Cruz (2n = 24-27), while in hybrids (2n = 22 x 2n = 40) it was 23.0 kJ day(-1). All races exhibited low resting rates of oxygen consumption compared with the predicted basal metabolic rates expected for Muridae, between 49.2% and 66.5% of the expected values.
The main factor influencing both food energy intake and oxygen consumption was body mass, explaining 41% of the variation in food energy intake and 39% of the variation in resting oxygen consumption. Body mass was significantly related to the mean summer temperature at the sites where the mice were captured, but was unaffected by the chromosomal race or other biogeographical and climatic variables. There were no additional effects of these factors on resting oxygen consumption beyond the effect of body mass.
Once the effects of body mass were removed, food energy intake was significantly correlated with the chromosomal race. The different environmental conditions experienced by the races may have favoured the physiological adaptation of mice to different habitats.

Original languageEnglish
Pages (from-to)330-339
Number of pages10
JournalFunctional Ecology
Volume20
Issue number2
Early online date19 Apr 2006
DOIs
Publication statusPublished - Apr 2006

Keywords

  • adaptation
  • bioenergetics
  • geographical variation
  • Robertsonian races
  • basal metabolic rate (BMR)
  • body composition
  • individual variation
  • food intake
  • mice
  • thermoregulation
  • energetics
  • expenditure
  • morphology
  • limits

Cite this

Effects of climate on oxygen consumption and energy intake of chromosomally divergent populations of the House Mouse (Mus musculus domesticus) from the island of Madeira (North Atlantic, Portugal). / Mathias, M L ; Nunes, A C ; Marques, C C ; Auffray, J C ; Britton-Davidian, J ; Ganem, G ; Gunduz, I ; Ramalhinho, M G ; Searle, J B ; Speakman, John Roger.

In: Functional Ecology, Vol. 20, No. 2, 04.2006, p. 330-339.

Research output: Contribution to journalArticle

Mathias, M L ; Nunes, A C ; Marques, C C ; Auffray, J C ; Britton-Davidian, J ; Ganem, G ; Gunduz, I ; Ramalhinho, M G ; Searle, J B ; Speakman, John Roger. / Effects of climate on oxygen consumption and energy intake of chromosomally divergent populations of the House Mouse (Mus musculus domesticus) from the island of Madeira (North Atlantic, Portugal). In: Functional Ecology. 2006 ; Vol. 20, No. 2. pp. 330-339.
@article{04e368f1d2184b1187bd30964f5ac314,
title = "Effects of climate on oxygen consumption and energy intake of chromosomally divergent populations of the House Mouse (Mus musculus domesticus) from the island of Madeira (North Atlantic, Portugal)",
abstract = "We explored the effects of climatic variables (mean altitude, mean daily winter temperature, mean daily summer temperature, mean annual precipitation and days of precipitation per year) on energetic parameters (food intake and resting oxygen consumption) in six Robertsonian chromosomal races and hybrid populations of House Mice (Mus musculus domesticus) collected throughout the island of Madeira in the North Atlantic. Food energy intake and resting metabolism (oxygen consumption) were measured, in 59 non-reproducing adult males trapped in April-September 1998 and June 1999 and maintained in captivity for at least 3 weeks prior to measurements. Mean daily energy intake of Robertsonian mice varied between 25.3 kJ day(-1) in race S. Vicente (2n = 25-27) and 34.6 kJ day(-1) in race Achadas da Cruz (2n = 24-27), while in hybrids (2n = 22 x 2n = 40) it was 23.0 kJ day(-1). All races exhibited low resting rates of oxygen consumption compared with the predicted basal metabolic rates expected for Muridae, between 49.2{\%} and 66.5{\%} of the expected values. The main factor influencing both food energy intake and oxygen consumption was body mass, explaining 41{\%} of the variation in food energy intake and 39{\%} of the variation in resting oxygen consumption. Body mass was significantly related to the mean summer temperature at the sites where the mice were captured, but was unaffected by the chromosomal race or other biogeographical and climatic variables. There were no additional effects of these factors on resting oxygen consumption beyond the effect of body mass. Once the effects of body mass were removed, food energy intake was significantly correlated with the chromosomal race. The different environmental conditions experienced by the races may have favoured the physiological adaptation of mice to different habitats.",
keywords = "adaptation, bioenergetics, geographical variation, Robertsonian races, basal metabolic rate (BMR), body composition, individual variation, food intake, mice, thermoregulation, energetics, expenditure, morphology, limits",
author = "Mathias, {M L} and Nunes, {A C} and Marques, {C C} and Auffray, {J C} and J Britton-Davidian and G Ganem and I Gunduz and Ramalhinho, {M G} and Searle, {J B} and Speakman, {John Roger}",
year = "2006",
month = "4",
doi = "10.1111/j.1365-2435.2006.01091.x",
language = "English",
volume = "20",
pages = "330--339",
journal = "Functional Ecology",
issn = "0269-8463",
publisher = "Blackwell Publishing Limited",
number = "2",

}

TY - JOUR

T1 - Effects of climate on oxygen consumption and energy intake of chromosomally divergent populations of the House Mouse (Mus musculus domesticus) from the island of Madeira (North Atlantic, Portugal)

AU - Mathias, M L

AU - Nunes, A C

AU - Marques, C C

AU - Auffray, J C

AU - Britton-Davidian, J

AU - Ganem, G

AU - Gunduz, I

AU - Ramalhinho, M G

AU - Searle, J B

AU - Speakman, John Roger

PY - 2006/4

Y1 - 2006/4

N2 - We explored the effects of climatic variables (mean altitude, mean daily winter temperature, mean daily summer temperature, mean annual precipitation and days of precipitation per year) on energetic parameters (food intake and resting oxygen consumption) in six Robertsonian chromosomal races and hybrid populations of House Mice (Mus musculus domesticus) collected throughout the island of Madeira in the North Atlantic. Food energy intake and resting metabolism (oxygen consumption) were measured, in 59 non-reproducing adult males trapped in April-September 1998 and June 1999 and maintained in captivity for at least 3 weeks prior to measurements. Mean daily energy intake of Robertsonian mice varied between 25.3 kJ day(-1) in race S. Vicente (2n = 25-27) and 34.6 kJ day(-1) in race Achadas da Cruz (2n = 24-27), while in hybrids (2n = 22 x 2n = 40) it was 23.0 kJ day(-1). All races exhibited low resting rates of oxygen consumption compared with the predicted basal metabolic rates expected for Muridae, between 49.2% and 66.5% of the expected values. The main factor influencing both food energy intake and oxygen consumption was body mass, explaining 41% of the variation in food energy intake and 39% of the variation in resting oxygen consumption. Body mass was significantly related to the mean summer temperature at the sites where the mice were captured, but was unaffected by the chromosomal race or other biogeographical and climatic variables. There were no additional effects of these factors on resting oxygen consumption beyond the effect of body mass. Once the effects of body mass were removed, food energy intake was significantly correlated with the chromosomal race. The different environmental conditions experienced by the races may have favoured the physiological adaptation of mice to different habitats.

AB - We explored the effects of climatic variables (mean altitude, mean daily winter temperature, mean daily summer temperature, mean annual precipitation and days of precipitation per year) on energetic parameters (food intake and resting oxygen consumption) in six Robertsonian chromosomal races and hybrid populations of House Mice (Mus musculus domesticus) collected throughout the island of Madeira in the North Atlantic. Food energy intake and resting metabolism (oxygen consumption) were measured, in 59 non-reproducing adult males trapped in April-September 1998 and June 1999 and maintained in captivity for at least 3 weeks prior to measurements. Mean daily energy intake of Robertsonian mice varied between 25.3 kJ day(-1) in race S. Vicente (2n = 25-27) and 34.6 kJ day(-1) in race Achadas da Cruz (2n = 24-27), while in hybrids (2n = 22 x 2n = 40) it was 23.0 kJ day(-1). All races exhibited low resting rates of oxygen consumption compared with the predicted basal metabolic rates expected for Muridae, between 49.2% and 66.5% of the expected values. The main factor influencing both food energy intake and oxygen consumption was body mass, explaining 41% of the variation in food energy intake and 39% of the variation in resting oxygen consumption. Body mass was significantly related to the mean summer temperature at the sites where the mice were captured, but was unaffected by the chromosomal race or other biogeographical and climatic variables. There were no additional effects of these factors on resting oxygen consumption beyond the effect of body mass. Once the effects of body mass were removed, food energy intake was significantly correlated with the chromosomal race. The different environmental conditions experienced by the races may have favoured the physiological adaptation of mice to different habitats.

KW - adaptation

KW - bioenergetics

KW - geographical variation

KW - Robertsonian races

KW - basal metabolic rate (BMR)

KW - body composition

KW - individual variation

KW - food intake

KW - mice

KW - thermoregulation

KW - energetics

KW - expenditure

KW - morphology

KW - limits

U2 - 10.1111/j.1365-2435.2006.01091.x

DO - 10.1111/j.1365-2435.2006.01091.x

M3 - Article

VL - 20

SP - 330

EP - 339

JO - Functional Ecology

JF - Functional Ecology

SN - 0269-8463

IS - 2

ER -