Testing the metabolic homeostasis hypothesis in amphibians

Kreiman, Lucas; Solano-Iguarán, Jaiber J.; Bacigalupe, Leonardo D.; Naya, Daniel E.

doi:10.1098/rstb.2018.0544

Cited by 10 publications

(6 citation statements)

References 59 publications

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“…Similar insights into seasonality and biogeography emerge from consideration of lobster physiology and feeding behavior at warmer temperatures. By maximizing the thermal sensitivity (Q 10 ) of metabolism at the lowest end of their ambient temperature range lobsters have reduced maintenance costs when temperatures are too low to support active foraging but also rapidly capitalize on increases in temperature that promote sustained activity, a pattern familiar from studies in other taxa (Naya et al, 2009;Kreiman et al, 2019). As temperatures warm, lobsters are able to recover 91.4% of their maximum consumption capacity when temperatures increase from 11 to 16°C.…”

Section: Insights From Temperature Dependence For Effects Of Seasonal...mentioning

confidence: 99%

The metabolic underpinnings of temperature-dependent predation in a key marine predator

Csik

DiFiore²,

Kraskura³

et al. 2023

Front. Mar. Sci.

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IntroductionChanges in temperature can fundamentally transform how species interact, causing wholesale shifts in ecosystem dynamics and stability. Yet we still have a limited understanding of how temperature-dependence in physiology drives temperature-dependence in species-interactions. For predator-prey interactions, theory predicts that increases in temperature drive increases in metabolism and that animals respond to this increased energy expenditure by ramping up their food consumption to meet their metabolic demand. However, if consumption does not increase as rapidly with temperature as metabolism, increases in temperature can ultimately cause a reduction in consumer fitness and biomass via starvation.MethodsHere we test the hypothesis that increases in temperature cause more rapid increases in metabolism than increases in consumption using the California spiny lobster (Panulirus interruptus) as a model system. We acclimated individual lobsters to temperatures they experience sacross their biogeographic range (11, 16, 21, or 26°C), then measured whether lobster consumption rates are able to meet the increased metabolic demands of rising temperatures.Results and discussionWe show positive effects of temperature on metabolism and predation, but in contrast to our hypothesis, rising temperature caused lobster consumption rates to increase at a faster rate than increases in metabolic demand, suggesting that for the mid-range of temperatures, lobsters are capable of ramping up consumption rates to increase their caloric demand. However, at the extreme ends of the simulated temperatures, lobster biology broke down. At the coldest temperature, lobsters had almost no metabolic activity and at the highest temperature, 33% of lobsters died. Our results suggest that temperature plays a key role in driving the geographic range of spiny lobsters and that spatial and temporal shifts in temperature can play a critical role in driving the strength of species interactions for a key predator in temperate reef ecosystems.

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Section: Insights From Temperature Dependence For Effects Of Seasonal...mentioning

confidence: 99%

The metabolic underpinnings of temperature-dependent predation in a key marine predator

Csik

DiFiore²,

Kraskura³

et al. 2023

Front. Mar. Sci.

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“…There are a number of hypotheses explaining how ectotherms cope with a reduction in environmental temperature with increasing latitude [5,6]. Kreiman et al [19] have tested one of these, the metabolic homeostasis hypothesis [20], using amphibians. This hypothesis states that species should display the greatest thermal sensitivity in their metabolism at the colder end of the environmental temperatures they experience in situ.…”

Section: Jis 0000-0002-6861-4039mentioning

confidence: 99%

Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen

Spicer

Morley

Bozinovic

2019

Phil. Trans. R. Soc. B

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Documenting and explaining global patterns of biodiversity in time and space have fascinated and occupied biologists for centuries. Investigation of the importance of these patterns, and their underpinning mechanisms, has gained renewed vigour and importance, perhaps becoming pre-eminent, as we attempt to predict the biological impacts of global climate change. Understanding the physiological features that determine, or constrain, a species' geographical range and how they respond to a rapidly changing environment is critical. While the ecological patterns are crystallizing, explaining the role of physiology has just begun. The papers in this volume are the primary output from a Satellite Meeting of the Society of Experimental Biology Annual Meeting, held in Florence in July 2018. The involvement of two key environmental factors, temperature and oxygen, was explored through the testing of key hypotheses. The aim of the meeting was to improve our knowledge of large-scale geographical differences in physiology, e.g. metabolism, growth, size and subsequently our understanding of the role and vulnerability of those physiologies to global climate warming. While such an aim is of heuristic interest, in the midst of our current biodiversity crisis, it has an urgency that is difficult to overstate. This article is part of the theme issue ‘Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen’.

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“…This directly relates to the thermal sensitivity of the SMR, often assessed by measuring Q 10-SMR values (the factorial change in SMR due to an increase of temperature by 10°C) over several temperature intervals. The MHH suggests that that cold-adapted ectotherms should also display high SMR sensitivity at a lower temperature range to quickly take advantage of mild warming episodes and, conversely, that they would also reach peak metabolic rates at lower temperatures than in their warm-adapted relatives [7, 12]. Both these hypotheses have been tested on a wide range of ectothermic organisms, but have remained, to this day, controversial mainly due to the lack of consistent support across taxa [4, 6, 7, 12-16].…”

Section: Introductionmentioning

confidence: 99%

Cold Comfort: metabolic rate and tolerance to low temperatures predict latitudinal distribution in ants

Willot¹,

Ørsted²,

Malte³

et al. 2023

Preprint

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Metabolic compensation has been proposed as a mean for ectotherms to cope with colder climates. For example, under the metabolic cold adaptation/metabolic homeostasis hypotheses (MCA/MHH), it has been formulated that cold-adapted ectotherms should display higher/more thermally sensitive metabolic rates (MRs) at lower temperatures. However, whether such compensation can truly be associated with distribution, and whether it interplays with cold-tolerance to support species climatic niches, remains largely unclear despite broad ecological implications thereof. Here, we teased apart the relationship between MRs, cold-tolerance, and distribution, to confront the MCA/MHH among 13 ant species. We report clear metabolic compensation effects, consistent with the MCA and MHH, where MR parameters strongly correlated with latitude and climatic factors across species distributions. The combination of both cold-tolerance and MR further upheld the best predictions of species climatic niches. To our knowledge, this is the first study showing that the association of metabolic data with cold-tolerance supports increased predictive value for biogeographical models in social insects. These results also highlight that adaptation to higher latitudes in ants involved adjustments of both cold-tolerance and MRs, potentially at the expense of metabolic performance at warmer temperatures, to allow this extremely successful group of insects to thrive under colder climates.

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Testing the metabolic homeostasis hypothesis in amphibians

Cited by 10 publications

References 59 publications

The metabolic underpinnings of temperature-dependent predation in a key marine predator

The metabolic underpinnings of temperature-dependent predation in a key marine predator

Physiological diversity, biodiversity patterns and global climate change: testing key hypotheses involving temperature and oxygen

Cold Comfort: metabolic rate and tolerance to low temperatures predict latitudinal distribution in ants

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