Correlation of seasonal acclimatization in metabolic enzyme activity with preferred body temperature in the Eastern red spotted newt (Notophthalmus viridescens viridescens)

Berner, Nancy J.; Bessay, Emmanuel P.

doi:10.1016/j.cbpa.2006.03.012

Cited by 21 publications

(32 citation statements)

References 23 publications

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“…Both favorable T e in June (Smolinský and Gvoždík 2009) and rather limited acclimatory change of the T p range per degree increase in acclimation temperature (0.14Њ-0.17ЊC; range: 0.2Њ-0.3ЊC) contributed to this result. The extent of acclimatory change falls well within the scope reported for other taxa (Feder and Pough 1975;Hutchison and Spriestersbach 1986;Hutchison and Dupré 1992;Berner and Bessay 2006), which suggests generally limited plasticity of T p in amphibians. However, costs of thermoregulatory behavior involve not only time but also other currencies, such as energy, predation risk, or missed opportunity (Huey and Slatkin 1976;Polo et al 2005;Angilletta 2009).…”

Section: Discussionmentioning

confidence: 61%

Seasonal Acclimation of Preferred Body Temperatures Improves the Opportunity for Thermoregulation in Newts

Hadamová

Gvoždı́k

2011

Physiological and Biochemical Zoology

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Seasonal acclimation and thermoregulation represent major components of complex thermal strategies by which ectotherms cope with the heterogeneity of their thermal environment. Some ectotherms possess the acclimatory capacity to shift seasonally their thermoregulatory behavior, but the frequent use of constant acclimation temperatures during experiments and the lack of information about thermal heterogeneity in the field obscures the ecological relevance of this plastic response. We examined the experimentally induced seasonal acclimation of preferred body temperatures (T(p)) in alpine newts Ichthyosaura (formerly Triturus) alpestris subjected to a gradual increase in acclimation temperature from 5°C during the winter to a constant 15°C or diel fluctuations between 10° and 20°C during the spring/summer. Both the mean and range of T(p) followed the increase in mean acclimation temperature without the influence of diel temperature fluctuations. The direction and magnitude of this acclimatory capacity has the potential to increase the time window available for thermoregulation. Although thermoregulation and thermal acclimation are often considered as separate but coadapted adjustments to thermal heterogeneity, their combined response is employed by newts to tackle seasonal variation in a thermoregulatory-challenging aquatic environment.

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Section: Discussionmentioning

confidence: 61%

Seasonal Acclimation of Preferred Body Temperatures Improves the Opportunity for Thermoregulation in Newts

Hadamová

Gvoždı́k

2011

Physiological and Biochemical Zoology

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“…There is considerable evidence for phenotypic plasticity of energetic physiology in adult amphibians (e.g., Wilson and Franklin, ; Arendt and Hoang, ; Berner and Bessay, ), and developmental plasticity is important in anuran tadpoles (West‐Eberhard, ). However, while many anuran species frequently overwinter as tadpoles, and this strategy is common among the Caudata (Duellman and Trueb, ), studies of seasonal acclimatization of tadpoles of species that overwinter in the larval stage are limited to Limnodynastes peronii (Marshall and Grigg, ; Wilson and Franklin, ; Rogers et al., ).…”

Section: Discussionmentioning

confidence: 99%

“…The beneficial acclimation hypothesis suggests that alterations of cell‐ and tissue‐level characteristics such as enzyme activity and membrane composition should lead to improved whole animal performance at the acclimation temperature (Wilson and Franklin, ). The increases in standard metabolic rate (Tsuji, ; Zari, ; Berner and Bessay, ; Glanville and Seebacher, ) and locomotor performance (Wilson and Franklin, ) at low temperatures that accompany winter acclimatization are supported by the changes that take place at subcellular levels (Mineo and Schaeffer, ).…”

Section: Introductionmentioning

confidence: 99%

Thermal Acclimatization in Overwintering Tadpoles of the Green Frog, Lithobates clamitans (Latreille, 1801)

et al. 2016

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Seasonal acclimatization permits organisms to maintain function in the face of environmental change. Tadpoles of the green frog (Lithobates clamitans) overwinter as tadpoles in much of their range. Because they are active in winter, we hypothesized that green frog tadpoles would display acclimatization of metabolic and locomotor function. We collected tadpoles in Sewanee, Tennessee (35.2°N) in winter and summer. Tadpoles collected during each season were tested at both winter (8°C) and summer (26°C) temperatures. Winter tadpoles were able to maintain swimming performance at both temperatures, whereas swimming performance decreased at cold temperatures in summer tadpoles. There was no evidence for seasonal acclimatization of whole-animal metabolic rate. Although whole-animal metabolic acclimatization was not observed, the activities of cytochrome c oxidase, citrate synthase, and lactate dehydrogenase measured in skeletal muscle homogenates showed higher activity in winter-acclimatized tadpoles indicating compensation for temperature. Further, the composition of muscle membranes of winter tadpoles had less saturated and more monounsaturated fatty acids and a higher ω-3 balance, unsaturation index, and peroxidation index than summer tadpoles. These data indicate that reversible phenotypic plasticity of thermal physiology occurs in larval green frog tadpoles. They appear to compensate for colder temperatures to maintain burst-swimming velocity and the ability to escape predators without the cost of maintaining a constant, higher standard metabolic rate in the winter.

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“…Accordingly, their limited thermoregulatory capabilities are restricted to movements across a thermally stratified water column (reviewed by Hutchison and Dupré 1992). Despite numerous studies (Licht and Brown 1967;Hutchison and Spriesterbach 1986;Gvoždík 2003;Berner and Bessay 2006;reviewed by Hutchison and Dupré 1992), the rigorous evidence required to understand thermal preferences is still lacking. Additionally, all available studies were carried out in horizontally distributed temperatures, though newts commonly experience vertical thermal gradients in the field (Dvořák and Gvoždík 2010).…”

Section: Introductionmentioning

confidence: 98%

The insensitivity of thermal preferences to various thermal gradient profiles in newts

Marek

Gvoždı́k

2011

J Ethol

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Many ectotherms possess the ability to behaviourally regulate their body temperatures. Thermoregulatory behaviour is affected by various biotic and abiotic factors, which may cause a substantial bias in the laboratory estimates of preferred body temperatures (T p ). We examined thermoregulatory behaviour in alpine newts, Ichthyosaura (formerly Triturus) alpestris, in both horizontal linear and vertical nonlinear thermal gradients, to evaluate the influence of a disparate water temperature distribution on their thermal preferences. Newt positions in thermal gradients differed from those in constant temperatures, which indicates their thermal preferences in both experimental setups. The mean and range of body temperatures showed similar values in both types of aquatic thermal gradients. We concluded that under a sufficiently wide range of environmental temperatures, newt thermal preferences are largely insensitive to the thermal gradient profile. This supports the suitability of T p estimates for further experimental and comparative studies in newts.

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Correlation of seasonal acclimatization in metabolic enzyme activity with preferred body temperature in the Eastern red spotted newt (Notophthalmus viridescens viridescens)

Cited by 21 publications

References 23 publications

Seasonal Acclimation of Preferred Body Temperatures Improves the Opportunity for Thermoregulation in Newts

Seasonal Acclimation of Preferred Body Temperatures Improves the Opportunity for Thermoregulation in Newts

Thermal Acclimatization in Overwintering Tadpoles of the Green Frog, Lithobates clamitans (Latreille, 1801)

The insensitivity of thermal preferences to various thermal gradient profiles in newts

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