Establishing the thermal threshold of the tropical mussel Perna viridis in the face of global warming

Goh, B.P.L.; Lai, Chien-Houng

doi:10.1016/j.marpolbul.2013.10.041

Cited by 20 publications

(17 citation statements)

References 51 publications

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“…As such, this activity index may become a useful tool as a proxy of biochemical, physiological and population level responses. Global climatic oscillations lead to changes in temperature patterns and to the occurrence of episodes of extreme cold or heat (Doney et al, 2012;IPCC, 2014) which may cause variations beyond the characteristic temperature window of ecosystems (Pörtner, 2002(Pörtner, , 2010Helmuth et al, 2010;Goh and Lai, 2014). If the variation is gradual (e.g.…”

Section: Discussionmentioning

confidence: 99%

“…Although most estuarine ectotherms are eurythermal -able to survive a broad range of temperatures (Lannig et al, 2006), tolerance to temperature is species-specific and depends on acclimation capacity (Gosling, 2004;Compton et al, 2007;Kordas et al, 2011;Goh and Lai, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…It has been described as affecting respiration and feeding (Gosling, 2004;Hicks and McMahon, 2005;Jansen et al, 2007;Rodland et al, 2009;Helmuth et al, 2010;Goh and Lai, 2014), leading to consequent behavioral changes (Ansell et al, 1981;Anestis et al, 2007;Rodland et al, 2009;Helmuth et al, 2010), and in severe cases to mortality responses (Casagranda and Boudouresque, 2005;Mouthon and Daufresne, 2006;Jansen et al, 2007;Parada and Molares, 2008;Verdelhos et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

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Behavioral and mortality responses of the bivalves Scrobicularia plana and Cerastoderma edule to temperature, as indicator of climate change's potential impacts

Verdelhos

Marques

Anastácio

2015

Ecological Indicators

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Behavioral and mortality responses of the bivalves Scrobicularia plana and Cerastoderma edule to temperature, as indicator of climate change's potential impacts

Verdelhos

Marques

Anastácio

2015

Ecological Indicators

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“…Arguably, while organismal mortality, pessimum (least favourable conditions, usually the switch from aerobic to anaerobic respiration) and pejus (=getting worse; compromise of physiological performances) may be difficult to pinpoint in the study of plant stress response (c.f. [47] [48]), it is proposed in this study here that for photosynthetic parameters, F v /F m ratio approaches the pessimum (CT max : critical thermal maxima, see [49] [50]) if not the upper lethal limit of organismal survival while LT 50 values of photosynthetic O 2 evolution could represent the onset of photosynthetic compromises (pejus) due to the increasing heat stress.…”

Section: Critical Temperatures and Thermal Windowsmentioning

confidence: 99%

Physiological Performances of Temperate Vegetables with Response to Chronic and Acute Heat Stress

Lai¹,

He²

2016

AJPS

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In face of climate change catastrophes, understanding the thermal limits and optimal physiological thermal window food crop is of particular urgency. This research aims to evaluate: 1) how physiological performances of plant will change with increasing chronic and acute heat stress; 2) if the examined parameters form a hierarchy in terms of thermal tolerance; and 3) the optimal thermal window and critical temperatures of the examined plants with response to chronic and acute heat stress. Six temperate vegetables were subjected to chronic and acute heat stress and a suite of physiological parameters were evaluated. Dose responses were observed in shoot fresh weight, photosynthetic gas exchange, photosynthetic oxygen evolution, electron transfer rate, photo-and non-photochemical quenching with significant drop in performance as early as 28˚C for selected species. Conversely, ratio of variable to maximum fluorescence (F v /F m ) was not affected by heat stress until 46˚C in chronic heat stress. Examining the temperature at which a measured parameter's performance dropped by 50% compared to control (LT 50 ), a distinct hierarchy of the indices was observed for Canasta, recombinant inbred line 141, Lactuca serriola and Lactuca sativa (L. "Salinas"): shoot fresh weight, representing the highest integrated level of photosynthesis was the most sensitive to thermal stress (28˚C -30˚C), followed by oxygen evolution (35˚C -45˚C) while non-photochemical and photochemical quenching which is subcellular function of stress alleviation had a much higher capacity failure temperature (47˚C -60˚C). It is expected that F v /F m ratio, a measurement of sub-cellular structural integrity, will approach that of non-photochemical and photochemical quenching, if not exceeding it. By examining the photosynthetic parameters via their hierarchy of biological organization, it can be inferred that plants like Arugula and recombinant inbred line 192 are already operating near their thermal limit and have less energetic investment into heat stress mediation whereas L. serriola prioritizes thermal tolerance at the expense of photosynthesis efficiency.

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“…Under heat stress, the activity of metabolic enzymes, such as citrate synthase, can also increase, which allows for a higher aerobic capacity (Sokolova and Pörtner, 2001;Morley et al, 2009;Kern et al, 2015). Increased metabolic rates under stressful conditions can cause animals to deplete glycogen energy stores (Santini and Chelazzi, 1995;Lim et al, 1996;Leung and Furness, 2001;Palais et al, 2011;Bjelde and Todgham, 2013;Goh and Lai, 2014) and increase the production of reactive oxygen species (Abele et al, 2002;Kültz, 2005;Han et al, 2013;Zhang et al, 2014). Antioxidant defense mechanisms can be upregulated in order to deal with high levels of oxidative stress (Pannunzio and Storey, 1998;Abele et al, 2002;Malanga et al, 2004;Dong et al, 2008a;de Oliveira et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

The role of stochastic thermal environments in modulating the thermal physiology of an intertidal limpet, Lottia digitalis

Drake

Miller

Todgham

2017

Journal of Experimental Biology

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Much of our understanding of the thermal physiology of intertidal organisms comes from experiments with animals acclimated under constant conditions and exposed to a single heat stress. In nature, however, the thermal environment is more complex. Aerial exposure and the unpredictable nature of thermal stress during low tides may be critical factors in defining the thermal physiology of intertidal organisms. In the fingered limpet, Lottia digitalis, we investigated whether upper temperature tolerance and thermal sensitivity were influenced by the pattern of fluctuation with which thermal stress was applied. Specifically, we examined whether there was a differential response (measured as cardiac performance) to repeated heat stress of a constant and predictable magnitude compared with heat stress applied in a stochastic and unpredictable nature. We also investigated differences in cellular metabolism and damage following immersion for insights into biochemical mechanisms of tolerance. Upper temperature tolerance increased with aerial exposure, but no significant differences were found between predictable treatments of varying magnitudes (13°C versus 24°C versus 32°C). Significant differences in thermal tolerance were found between unpredictable trials with different heating patterns. There were no significant differences among treatments in basal citrate synthase activity, glycogen content, oxidative stress or antioxidants. Our results suggest that aerial exposure and recent thermal history, paired with relief from high low-tide temperatures, are important factors modulating the capacity of limpets to deal with thermal stress.

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Establishing the thermal threshold of the tropical mussel Perna viridis in the face of global warming

Cited by 20 publications

References 51 publications

Behavioral and mortality responses of the bivalves Scrobicularia plana and Cerastoderma edule to temperature, as indicator of climate change's potential impacts

Behavioral and mortality responses of the bivalves Scrobicularia plana and Cerastoderma edule to temperature, as indicator of climate change's potential impacts

Physiological Performances of Temperate Vegetables with Response to Chronic and Acute Heat Stress

The role of stochastic thermal environments in modulating the thermal physiology of an intertidal limpet, Lottia digitalis

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