scholarly journals Geographic variation and thermal plasticity shape salamander metabolic rates under current and future climates

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
David Muñoz ◽  
David Miller ◽  
Rudolf Schilder ◽  
Evan H. Campbell Grant
Keyword(s):  
Geographic Variation ◽  
Metabolic Rates ◽  
Thermal Plasticity

scholarly journals Metabolic cold adaptation in fishes occurs at the level of whole animal, mitochondria and enzyme

2011 ◽  
Vol 279 (1734) ◽  
pp. 1740-1747 ◽  
Author(s):  
Craig R. White ◽  
Lesley A. Alton ◽  
Peter B. Frappell
Keyword(s):  
High Latitude ◽  
Cold Adaptation ◽  
Citrate Synthase ◽  
High Standard ◽  
Metabolic Rates ◽  
Thermal Plasticity ◽  
Metabolic Compensation ◽  
Low Latitudes ◽  
Effects Of Temperature ◽  
Metabolic Cold Adaptation

Metabolic cold adaptation (MCA), the hypothesis that species from cold climates have relatively higher metabolic rates than those from warm climates, was first proposed nearly 100 years ago and remains one of the most controversial hypotheses in physiological ecology. In the present study, we test the MCA hypothesis in fishes at the level of whole animal, mitochondria and enzyme. In support of the MCA hypothesis, we find that when normalized to a common temperature, species with ranges that extend to high latitude (cooler climates) have high aerobic enzyme (citrate synthase) activity, high rates of mitochondrial respiration and high standard metabolic rates. Metabolic compensation for the global temperature gradient is not complete however, so when measured at their habitat temperature species from high latitude have lower absolute rates of metabolism than species from low latitudes. Evolutionary adaptation and thermal plasticity are therefore insufficient to completely overcome the acute thermodynamic effects of temperature, at least in fishes.

scholarly journals Geographic variation in thermal plasticity of life history and wing pattern in Bicyclus anynana

2010 ◽  
Vol 43 (1) ◽  
pp. 91-102 ◽  
Author(s):  
MA de Jong ◽  
FMNH Kesbeke ◽  
PM Brakefield ◽  
BJ Zwaan
Keyword(s):  
Life History ◽  
Geographic Variation ◽  
Wing Pattern ◽  
Bicyclus Anynana ◽  
Thermal Plasticity

scholarly journals Thermal plasticity of metabolic rates linked to life-history traits and foraging behaviour in a parasitic wasp

2010 ◽  
Vol 25 (3) ◽  
pp. 641-651 ◽  
Author(s):  
Cécile Le Lann ◽  
Thomas Wardziak ◽  
Joan van Baaren ◽  
Jacques J. M. van Alphen
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Foraging Behaviour ◽  
Parasitic Wasp ◽  
Metabolic Rates ◽  
Thermal Plasticity

METABOLIC AND ENDOCRINE ASPECTS OF THE WHIRLER MUTATION IN MALE MICE

1970 ◽  
Vol 64 (2) ◽  
pp. 347-358
Author(s):  
A. Stanley Weltman ◽  
Arthur M. Sackler
Keyword(s):  
Locomotor Activity ◽  
Endocrine Function ◽  
Metabolic Rates ◽  
Heterozygous Female ◽  
Endocrine Organ ◽  
General Body ◽  
Adrenocortical Activity ◽  
Body Weights ◽  
Seminal Vesicle Weight ◽  
Eosinophil Counts

ABSTRACT Body weight, metabolic rate, locomotor activity and alterations in endocrine organ activity were noted in recessive homozygous male whirler mice and the phenotypically »normal« heterozygotes. Representative populations of the two types were studied at different age levels. In general, body weights of the whirler mice were consistently and significantly lower. Open-field locomotion studies similarly indicated heightened locomotor activity. Total leukocyte and eosinophil counts were either markedly or significantly lower in the homozygous vs. heterozygous whirler groups. Evaluation of relative organ weights showed significantly increased adrenal weights in whirler mice sacrificed at 14 weeks and 11 months of age. These changes were accompanied by involution of the thymus. Thus, the varied data indicate persistent increased metabolism and adrenocortical activity during the life-span of the whirler mice. Seminal vesicle weight decreases in the whirler males at 11 months suggest lower gonadal function. The findings are in accord with previous studies of alterations in metabolic rates and endocrine function of homozygous whirler vs. heterozygous female mice.

To Whistle or Not to Whistle? Geographic Variation in the Whistling Behavior of Small Odontocetes

2008 ◽  
Vol 34 (3) ◽  
pp. 288-302 ◽  
Author(s):  
Julie N. Oswald ◽  
Shannon Rankin ◽  
Jay Barlow
Keyword(s):  
Geographic Variation
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