Acclimation to elevated emersion temperature has no effect on susceptibility to acute, heat-induced lipid peroxidation in an intertidal mussel (Mytilus californianus)

Jiménez, Ana Gabriela; Alves, Shaina; Dallmer, Jeremiah; Njoo, Edward; Roa, Selina; Dowd, W. Wesley

doi:10.1007/s00227-016-2828-8

Cited by 32 publications

(21 citation statements)

References 39 publications

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“…Another caveat is that the DEB model used here does not explicitly account for possible anaerobic metabolism or oxidative stress incurred by intertidal mussels during prolonged aerial exposure, which can further affect the energy balance of organisms (Anestis et al 2007;Jimenez et al 2016;Lesser 2016). Based on recent evidence from Tagliarolo and McQuaid (2015), our model simply assumed metabolic depression during emersion, thus buffering the influence of variable body temperatures in air on energetics and growth.…”

Section: Discussionmentioning

confidence: 99%

Predicting the performance of cosmopolitan species: dynamic energy budget model skill drops across large spatial scales

et al. 2019

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Individual-based models are increasingly used by marine ecologists to predict species responses to environmental change on a mechanistic basis. Dynamic Energy Budget (DEB) models allow the simulation of physiological processes (maintenance, growth, reproduction) in response to variability in environmental drivers. High levels of computational capacity and remote-sensing technologies provide an opportunity to apply existing DEB models across global spatial scales. To do so, however, we must first test the assumption of stationarity, i.e., that parameter values estimated for populations in one location/time are valid for populations elsewhere. Using a validated DEB model parameterized for the cosmopolitan intertidal mussel Mytilus galloprovincialis, we ran growth simulations for native, Mediterranean Sea, populations and non-native, South African populations. The model performed well for native populations, but overestimated growth for non-native ones. Overestimations suggest that: (1) unaccounted variables may keep the physiological performance of non-native M. galloprovincialis in check, and/or (2) phenotypic plasticity or local adaptation could modulate responses under different environmental conditions. The study shows that stationary mechanistic models that aim to describe dynamics in complex physiological processes should be treated carefully when implemented across large spatial scales. Instead, we suggest placing the necessary effort into identifying the nuances that result in non-stationarity and explicitly accounting for them in geographic-scale mechanistic models.

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Section: Discussionmentioning

confidence: 99%

Predicting the performance of cosmopolitan species: dynamic energy budget model skill drops across large spatial scales

et al. 2019

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“…Dayton 1971;Paine & Levin 1980), and its thermal environment and thermal physiology are under active investigation (e.g. Gracey et al 2008;Helmuth et al 2010;Denny et al 2011;Jimenez et al 2015Jimenez et al , 2016Somero et al 2017). Using the measured distribution of constitutive tolerances for M. californianus (μ tol = 38 °C, σ tol = 1.25 °C; Denny et al 2011) and a representative spatial variation in imposed temperature (σ max = 2 °C; Denny et al 2011), one can predict the effects of interacting spatial variation and individual tolerance ( Fig.…”

Section: Theorymentioning

confidence: 99%

Survival in spatially variable thermal environments: Consequences of induced thermal defense

Denny

2018

Integrative Zoology

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As Earth's climate warms, plants and animals are likely to encounter an increased frequency and severity of extreme thermal events, and the ensuing destruction is likely to play an important role in structuring ecological communities. However, accurate prediction of the population-scale consequences of extreme thermal events requires detailed knowledge of the small-scale interaction between individual organisms and their thermal environment. In this study I propose a simple model that allows one to explore how individual-to-individual variation in body temperature and thermal physiology determines what fraction of a population will be killed by an extreme thermal event. The model takes into account the possibility that each individual plant or animal can respond to an event by adjusting its thermal tolerance in proportion to the stress it encounters. When thermal stress is relatively mild, the model shows that a graded physiological response of this sort leads to increased survivorship. However, the model predicts that in more severe events a proportional induced defense can actually reduce survivorship, a counter-intuitive possibility that is not predicted by standard theory. The model can easily be tailored to different species and thermal environments to provide an estimate of when, where, and how physiology can buffer the effects of climate warming.

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“…Tissue from each individual was measured in duplicate; replicate values were averaged to obtain a single activity (international units per gram fresh weight of tissue; U gfw −1 ) for each individual. This method has been used and validated for tissue homogenates before (Jimenez et al 2015;Jimenez et al 2016).…”

Section: Catalase (Cat) Activitymentioning

confidence: 99%

Thermal acclimation of fast-growing Japanese Quails (Coturnix japonica) exhibit decreased oxidative stress and increased muscle fiber diameters after acute heat challenges

et al. 2018

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Many predict dire consequences of increasing temperatures; however, high temperatures in early life may aid animals during extreme thermal events later in life. The underlying physiological mechanisms have not been elucidated. We examined whether developing in warmer temperatures would physiologically benefit adult Japanese Quails (Coturnix japonica Temminck and Schlegel, 1849) by exploring changes in oxidative stress and muscle structure in two quail lines — one selected for control growth and another for fast growth and after acute heat challenges. We used a factorial design to administer four treatment combinations to each line: an initial period of either heat-stress acclimation (3 h every other day to 37 °C) or no acclimation, and after 5 weeks, either an acute heat-stress challenge (8 h at 39 °C) or no challenge. We found that control quails had significantly higher citrate synthase activity than fast-growing quails. Fast-growing quails had higher hydroxyl scavenging capacity than control quails. Peroxyl scavenging capacity decreased in both lines after an acute heat challenge, regardless of acclimation. Finally, fast-growing quails had larger muscle fiber diameters than control quails, and acclimated birds that experienced an acute heat challenge had larger muscle fibers than those that did not experience a heat challenge. Thus, fast-growing quails may physiologically benefit from developing in warmer temperatures.

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Acclimation to elevated emersion temperature has no effect on susceptibility to acute, heat-induced lipid peroxidation in an intertidal mussel (Mytilus californianus)

Cited by 32 publications

References 39 publications

Predicting the performance of cosmopolitan species: dynamic energy budget model skill drops across large spatial scales

Predicting the performance of cosmopolitan species: dynamic energy budget model skill drops across large spatial scales

Survival in spatially variable thermal environments: Consequences of induced thermal defense

Thermal acclimation of fast-growing Japanese Quails (Coturnix japonica) exhibit decreased oxidative stress and increased muscle fiber diameters after acute heat challenges

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