Thermal physiology: A new dimension of the pace‐of‐life syndrome

Goulet, Céline; Thompson, Michael B.; Michelangeli, Marcus; Wong, Bob B. M.; Chapple, David G.

doi:10.1111/1365-2656.12718

Cited by 63 publications

(82 citation statements)

References 80 publications

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“…Rodríguez‐Prieto, Martín, & Fernández‐Juricic, ), thus we also used this metric as our measure of boldness. Skinks that explored the barrier more often and were able to pass the barrier to explore compartment 2 were considered to have a higher exploration tendency (sensu Goulet, Thompson, Michelangeli, et al., ; Michelangeli, Chapple, et al., ; Michelangeli, Wong, et al., ).…”

Section: Methodsmentioning

confidence: 99%

“…This was achieved by first either cooling or warming lizards to the desired test temperature in a thermal chamber for 30 min. Lizards were then raced down a 1 m racetrack (10 cm width: as per Cromie & Chapple, ; Goulet, Thompson, Michelangeli, et al., ; Goulet, Thompson, & Chapple, ) set at the desired test temperature. Sprint speeds were determined by photodiode sensors positioned at 25 cm intervals along the racetrack.…”

Section: Methodsmentioning

confidence: 99%

“…Thermal physiology may influence animal personality via its direct effects on biological processes associated with behaviour, including locomotion, growth, endocrine function and energy budgets (Brodie & Russell, ; Goulet, Thompson, & Chapple, ; Goulet, Thompson, Michelangeli, et al., ). For example when operating at higher body temperatures imposed by increases in environmental temperatures, individuals have been shown to become more aggressive (Biro et al., ), active and explorative (Cerqueira et al., ), risk‐averse (Herrel, James, & Van Damme, ) and asocial (Pruitt, Demes, & Dittrich‐Reed, ).…”

Section: Introductionmentioning

confidence: 99%

“…At one end of the continuum, “hot” thermal types would select and perform optimally at higher body temperatures, have faster locomotor capabilities, low sociability and high levels of activity, exploration and boldness. In contrast, “cold” thermal types, would select and perform optimally at lower body temperatures, have slower locomotor capabilities, would be more social and have low activity, exploration and boldness levels (Goulet, Thompson, & Chapple, ; Goulet, Thompson, Michelangeli, et al., ).…”

Section: Introductionmentioning

confidence: 99%

“…We looked for correlations between these traits to determine whether we could categorize individuals along the cold–hot continuum (i.e. “thermal typing”: Goulet, Thompson, & Chapple, ; Goulet, Thompson, Michelangeli, et al., ). Our second aim was to determine whether or not an individual's thermal type was related to their microhabitat use within an artificial environment setup.…”

Section: Introductionmentioning

confidence: 99%

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Integrating thermal physiology within a syndrome: Locomotion, personality and habitat selection in an ectotherm

et al. 2018

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Physiology and temperature can both have a profound influence on behaviour and metabolism. Despite this, thermal physiology has rarely been considered within the animal personality framework, but could be an inherent mechanism maintaining consistent individual differences in behaviour, particularly in species that need to thermoregulate (i.e. ectotherms). Here, we present evidence for a thermal‐behavioural syndrome and detail how it is linked to variation in habitat selection in an Australian lizard, the delicate skink, Lampropholis delicata. We predicted that individuals would occur along a cold–hot continuum—analogues to the slow–fast continuum proposed by the pace‐of‐life hypothesis—whereby an individual's placement along a thermal physiological axis will correspond with their placement along a personality axis. We first tested the thermal‐behavioural syndrome by measuring the thermal preferences and optimal performance temperature of individual skinks and linking it to their activity, exploratory, social and boldness behaviours. In line with our predictions, we found that individuals with a “hot” thermal type performed optimally at higher temperatures, had faster sprint speeds and were more active, explorative and bold relative to “cold” thermal types. We then monitored each individual's habitat selection within an artificial environment containing three microhabitats differing in their thermal characteristics. We found that an individual's thermal type mediated their use of habitat, in which “hot” individuals utilized a hotter microhabitat more regularly than both “cold” and “intermediate” thermal types, suggesting that the thermal‐behavioural syndrome could drive ecological niche partitioning in this species. We envisage that the thermal‐behavioural syndrome concept is likely to extend to other study systems, particularly to ectothermic organisms that rely heavily on behavioural thermoregulation to maintain optimal body temperature. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.13034/suppinfo is available for this article.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Integrating thermal physiology within a syndrome: Locomotion, personality and habitat selection in an ectotherm

et al. 2018

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Linking behavioral thermoregulation, boldness, and individual state in male Carpetan rock lizards

Horváth

Jiménez-Robles

Martı́n

et al. 2020

Ecology and Evolution

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Mechanisms affecting consistent interindividual behavioral variation (i.e., animal personality) are of wide scientific interest. In poikilotherms, ambient temperature is one of the most important environmental factors with a direct link to a variety of fitness‐related traits. Recent empirical evidence suggests that individual differences in boldness are linked to behavioral thermoregulation strategy in heliothermic species, as individuals are regularly exposed to predators during basking. Here, we tested for links between behavioral thermoregulation strategy, boldness, and individual state in adult males of the high‐mountain Carpetan rock lizard (Iberolacerta cyreni). Principal component analysis revealed the following latent links in our data: (i) a positive relationship of activity with relative limb length and color brightness (PC1, 23% variation explained), (ii) a negative relationship of thermoregulatory precision with parasite load and risk‐taking (PC2, 20.98% variation explained), and (iii) a negative relationship between preferred body temperature and relative limb length (PC3, 19.23% variation explained). We conclude that differences in boldness and behavioral thermoregulatory strategy could be explained by both stable and labile state variables. The moderate link between behavioral thermoregulatory strategy and risk‐taking personality in our system is plausibly the result of differences in reproductive state of individuals or variation in ecological conditions during the breeding season.

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Thermal adaptation revisited: How conserved are thermal traits of reptiles and amphibians?

et al. 2020

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Ectothermic animals, such as amphibians and reptiles, are particularly sensitive to rapidly warming global temperatures. One response in these organisms may be to evolve aspects of their thermal physiology. If this response is adaptive and can occur on the appropriate time scale, it may facilitate population or species persistence in the changed environments. However, thermal physiological traits have classically been thought to evolve too slowly to keep pace with environmental change in longer‐lived vertebrates. Even as empirical work of the mid‐20th century offers mixed support for conservatism in thermal physiological traits, the generalization of low evolutionary potential in thermal traits is commonly invoked. Here, we revisit this hypothesis to better understand the mechanisms guiding the timing and patterns of physiological evolution. Characterizing the potential interactions among evolution, plasticity, behavior, and ontogenetic shifts in thermal physiology is critical for accurate prediction of how organisms will respond to our rapidly warming world. Recent work provides evidence that thermal physiological traits are not as evolutionarily rigid as once believed, with many examples of divergence in several aspects of thermal physiology at multiple phylogenetic scales. However, slow rates of evolution are often still observed, particularly at the warm end of the thermal performance curve. Furthermore, the context‐specificity of many responses makes broad generalizations about the potential evolvability of traits tenuous. We outline potential factors and considerations that require closer scrutiny to understand and predict reptile and amphibian evolutionary responses to climate change, particularly regarding the underlying genetic architecture facilitating or limiting thermal evolution.

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Thermal physiology: A new dimension of the pace‐of‐life syndrome

Cited by 63 publications

References 80 publications

Integrating thermal physiology within a syndrome: Locomotion, personality and habitat selection in an ectotherm

Integrating thermal physiology within a syndrome: Locomotion, personality and habitat selection in an ectotherm

Linking behavioral thermoregulation, boldness, and individual state in male Carpetan rock lizards

Thermal adaptation revisited: How conserved are thermal traits of reptiles and amphibians?

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