Toward a metabolic theory of life history

Burger, Joseph R.; Hou, Chen; Brown, James H.

doi:10.1073/pnas.1907702116

Cited by 61 publications

(91 citation statements)

References 40 publications

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“…These include the exponential decrease in survival with age and the scalings of the metabolic rates of assimilation, respiration and production with body size and temperature. More generally, the MLT indicates how variation in physiological, life history and ecological traits is constrained by two biophysical laws that apply to all organisms at steady state (Brown et al 2018; Burger et al 2019): a demographic constraint dictates that in all sexually reproducing organisms, regardless of the number and size of offspring hatched or born, only two survive on average to maturity and reproduce to replace their parents; and an energy balance constraint dictates the relationships between uptake and expenditure, the tradeoff between offspring growth and parental investment, and the scalings of production and generation time with body size and temperature. …”

Section: Metabolic Ecology Of Sockeye Salmonmentioning

confidence: 99%

“…In conclusion, the MLT framework that Brett pioneered decades ago to synthesize information on life history, demography, energetics and physiology of sockeye salmon is widely applicable to contemporary metabolic ecology. We encourage data compilation in an MLT framework for additional species to evaluate universalities from emerging metabolic life history theories (e.g., Brown et al 2018; Burger et al 2019). Doing so will have additional practical applications for sustainable resource management, biodiversity conservation and predicting global change impacts on demography and populations of species.…”

Section: Metabolic Ecology Of Sockeye Salmonmentioning

confidence: 99%

“…Empirical and theoretical research on metabolic ecology uses energy as a common currency to make explicit linkages between ecology, life history and evolution (e.g., Lotka 1922; Odum & Pinkerton 1955; Hall 1972, 1995; Van Valen 1976; Brown et al 2004, 2018; Koopijman and Kooijman 2010; Sibly et al 2012; Burger et al 2019). These linkages connect anatomy, morphology, physiology and behavior at the level of individual organisms to patterns and processes of ecological organization at population, community and ecosystem levels.…”

Section: Introductionmentioning

confidence: 99%

“…We compile and reanalyze his data to address theoretical and empirical, basic and applied problems. We show how updated metabolic life table (MLT) analysis offers new insights into the fundamental general features of demography and metabolic ecology that govern the diversity of life (Brown et al 2018; Burger et al 2019). Sockeye salmon provide an exemplary model system for MLT analysis illuminating the keystone energetic roles of salmon in ecosystems and human economies.…”

Section: Introductionmentioning

confidence: 99%

“…1); and they have been studied intensively – long prized as food for humans, wild fisheries and aquaculture are worth billions of dollars (Quinn 2018; http://www.iser.uaa.alaska.edu/Publications/2013_04-TheEconomicImportanceOfTheBristolBaySalmonIndustry.pdf; https://en.wikipedia.org/wiki/Aquaculture_of_salmonids). Here we reassembly and revive Brett’s “life table of energetics” of sockeye (Brett 1983; Brett 1986; Furnell and Brett 1996) in the context of recent advancements in metabolic life history theory (Brown et al 2018; Burger et al 2019) in order to demonstrate the practical utility and universality of the approach.…”

Section: Introductionmentioning

confidence: 99%

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A metabolic life table exemplified by sockeye salmon

Burger

Hou

Hall

et al. 2020

Preprint

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21We resurrect the metabolic life table (MLT), a combination of life table and energy budget that 22 quantifies how metabolic energy is acquired and allocated to survival, growth and reproduction 23 over the life cycle. To highlight its broad implications and utility, we apply this framework to 24 John Brett's classic data on sockeye salmon. In the life cycle of Skeena River sockeye, a pair of 25 breeders dies in fresh water after spawning, and the offspring move to the ocean where they 26 feed, grow and suffer mortality before returning to freshwater and migrating upstream to 27 spawn and die. Most of the accumulated biomass energy is transported into freshwater 28 ecosystems and expended on respiration for migration and breeding or is transferred to 29 2 consumers. Reanalyzing Brett's data in the context of a MLT has broad implications and 30 applications: i) for basic ecology, because of the unusual physiology, life history and ecosystem 31 impacts of wild salmon; and ii) for conservation and management, because of the enormous 32 economic importance of wild-caught and farmed salmon. Moreover, the MLT highlights the 33 intimate relationships between two universal biological processes: i) demography as a function 34 of age; and ii) metabolism-the balancing of uptake, transformation, and allocation of 35 metabolic energy over the life cycle. Linking these two universal processes provides a general 36 MLT framework that can be applied across the diversity of life. 37 38 45 have important implications for applied issues in science including conservation, management 46 and exploitation of animals for human use. 47 Canadian fisheries biologist John "Roly" Brett (1983, 1986) introduced the concept of a 48 "life table of energetics," which combines the demographic framework of a traditional life table 49 with the energy balance framework of physiological ecology. Brett illustrated the conceptual 50 approach and practical applications using data on sockeye salmon collected over decades of 51 3 field and laboratory research. Here, we resurrect Brett's seminal ideas in the context of recent 52 advances in metabolic scaling theory. We compile and reanalyze his data to address theoretical 53 and empirical, basic and applied problems. We show how updated metabolic life table (MLT) 54 analysis offers new insights into the fundamental general features of demography and 55 metabolic ecology that govern the diversity of life (Brown et al. 2018; Burger et al. 2019). 56 Sockeye salmon provide an exemplary model system for MLT analysis illuminating the keystone 57 energetic roles of salmon in ecosystems and human economies. 58 59 Figure 1. Life cycle of Babine Lake sockeye salmon after Brett (1983). The parts of the life cycle 60 spent in fresh water and the oceans are indicated by green and blue shading, respectively, but 61 not to scale; salmon spend nearly equal time, two years, in freshwater and marine 62 environments. Figure modified from 63 4 https://www.google.com/search?q=salmon+life+cycle&rlz=1C1CHFX_enUS555US...

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Section: Metabolic Ecology Of Sockeye Salmonmentioning

confidence: 99%

Section: Metabolic Ecology Of Sockeye Salmonmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A metabolic life table exemplified by sockeye salmon

Burger

Hou

Hall

et al. 2020

Preprint

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Impacts of multiple anthropogenic stressors on stream macroinvertebrate community composition and functional diversity

Juvigny‐Khenafou

Piggott

Atkinson

et al. 2020

Ecology and Evolution

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Untapped potential of physiology, behaviour and immune markers to predict range dynamics and marginality

Shultz

Britnell

Harvey

2021

Ecology and Evolution

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One in five vertebrate species is classified by the IUCN as vulnerable, endangered, or critically endangered (Hoffmann et al., 2010). These declines and losses are largely attributed to anthropocentric changes in the environment such as land conversion, climate change, and unsustainable natural resource harvesting and extraction (Brook et al., 2008).Ultimately, range contraction and biodiversity loss are the end product of extrinsic or intrinsic challenges leading to population decline, emigration, and local extirpation. Across a species' range, populations occur

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Toward a metabolic theory of life history

Cited by 61 publications

References 40 publications

A metabolic life table exemplified by sockeye salmon

A metabolic life table exemplified by sockeye salmon

Impacts of multiple anthropogenic stressors on stream macroinvertebrate community composition and functional diversity

Untapped potential of physiology, behaviour and immune markers to predict range dynamics and marginality

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