4.3 Article

Meta-analysis reveals that resting metabolic rate is not consistently related to fitness and performance in animals

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s00360-021-01358-w

关键词

Ectotherm; Endotherm; Evolutionary physiology; Survival; Reproduction; RMR

资金

  1. Australian Research Council

向作者/读者索取更多资源

Individuals with relatively high RMR generally exhibit high fitness, possibly supported by increased energy intake. However, the nature of the RMR-fitness relationship varies depending on specific traits, and there is no consistent relationship between RMR and traits closely linked with actual fitness.
Explaining variation in the fitness of organisms is a fundamental goal in evolutionary ecology. Maintenance energy metabolism is the minimum energy required to sustain biological processes at rest (resting metabolic rate: RMR) and is proposed to drive or constrain fitness of animals; however, this remains debated. Hypotheses have been proposed as to why fitness might increase with RMR (the 'increased intake' or 'performance' hypothesis), decrease with RMR (the 'compensation' or 'allocation' hypothesis), or vary among species and environmental contexts (the 'context dependent' hypothesis). Here, we conduct a systematic review and meta-analysis of the literature, finding 114 studies with 355 relationships between RMR and traits that may be related to fitness. We show that individuals with relatively high RMR generally have high fitness overall, which might be supported by an increased energy intake. However, fitness proxies are not interchangeable: the nature of the RMR-fitness relationship varied substantially depending on the specific trait in question, and we found no consistent relationship between RMR and those traits most closely linked with actual fitness (i.e., lifetime reproductive success). We hypothesise that maintaining high RMR is not costly when resources are unlimited, and we propose ideas for future studies to identify mechanisms underlying RMR-fitness relationships.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.3
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Biology

Relationship between capillaries, mitochondria and maximum power of the heart: a meta-study from shrew to elephant

Heidi D. Horrell, Anika Lindeque, Anthony P. Farrell, Roger S. Seymour, Craig R. White, Kayla M. Kruger, Edward P. Snelling

Summary: This meta-study found that cardiac capillary numerical density and mitochondrial volume density decrease with increasing body mass. The scaling trajectories suggest quantitative matching between the supply and consumption of oxygen in the heart, supporting the economic design at the cellular level. However, the exponent for the maximum external mechanical power of the cardiac tissue decreases at a slower rate, implying a declining external mechanical efficiency of the heart with increasing body mass.

PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES (2022)

Article Ecology

Externally attached biologgers cause compensatory body mass loss in birds

Steven J. Portugal, Craig R. White

Summary: The study found that animal-borne logging devices can impact the body weight and energy budget of animals, and it is important to consider device size and attachment time when using biologging technology.

METHODS IN ECOLOGY AND EVOLUTION (2022)

Article Ecology

A comparative analysis testing Werner's theory of complex life cycles

Emily L. Richardson, Craig R. White, Dustin J. Marshall

Summary: The study examines the growth rate and mass changes during larval stages and metamorphosis across various taxa. It finds support for Werner's assumption regarding growth rates but contradicts the assumption that body size remains constant during transitions. The research suggests that mass changes profoundly affect the timing of transitions, emphasizing the need to consider the impact of mass loss or gain on fitness.

FUNCTIONAL ECOLOGY (2022)

Article Ecology

Patterns of phenotypic plasticity along a thermal gradient differ by trait type in an alpine plant

Pieter A. Arnold, Shuo Wang, Alexandra A. Catling, Loeske E. B. Kruuk, Adrienne B. Nicotra

Summary: Climate change presents challenges for plants due to increased temperature exposure. Phenotypic plasticity plays an important role in plant responses. Different traits show different responses to temperature. Temperature affects plasticity in germination, leaf, physiology, and reproductive traits, and plasticity variation among family lines is related to fitness.

FUNCTIONAL ECOLOGY (2022)

Article Plant Sciences

Effects of warming temperatures on germination responses and trade-offs between seed traits in an alpine plant

Rocco F. Notarnicola, Adrienne B. Nicotra, Loeske E. B. Kruuk, Pieter A. Arnold

Summary: This study investigates the effects of climate warming on the trade-off between seed size and number in an alpine plant. The results show that warming during parental growth reduces both seed size and number, but does not affect germination. This highlights the detrimental effect of warming on parental fitness and the potential risk of climate change for alpine plant communities.

JOURNAL OF ECOLOGY (2023)

Article Multidisciplinary Sciences

Metabolic scaling is the product of life-history optimization

Craig R. White, Lesley A. Alton, Candice L. Bywater, Emily J. Lombardi, Dustin J. Marshall

Summary: Organisms use energy for growth and reproduction, and metabolism, growth, and reproduction are tightly linked, determining fitness. Our model predicts that anthropogenic change will have detrimental effects on the metabolism, growth, and reproduction of animals.

SCIENCE (2022)

Article Plant Sciences

A NOVEL AND HIGH-THROUGHPUT APPROACH TO ASSESS PHOTOSYNTHETIC THERMAL TOLERANCE OF KELP USING CHLOROPHYLL a FLUOROMETRY

Rosalie J. Harris, Callum Bryant, Melinda A. Coleman, Andrea Leigh, Veronica F. Briceno, Pieter A. Arnold, Adrienne B. Nicotra

Summary: Foundation seaweed species are declining and facing extinctions due to unstable sea surface temperatures. Existing methods for characterizing seaweed thermal tolerance are time-consuming and hinder comparisons between species. A new method using temperature-dependent fluorescence curves offers a high-throughput approach for rapidly assessing photosynthetic thermal tolerance of seaweeds.

JOURNAL OF PHYCOLOGY (2023)

Article Ecology

Do we need to mine social media data to detect exotic vertebrate-pest introductions?

Peter Caley, Phillip Cassey

Summary: Invasive alien species cause biodiversity loss and environmental damage. Citizen reports are currently the main source of alien species detections. Mining social media data may improve citizen surveillance, but it needs to demonstrate its effectiveness and value compared to alternative approaches.

WILDLIFE RESEARCH (2023)

Article Biology

Optimisation and constraint: explaining metabolic patterns in biology

Craig R. White, Dustin J. Marshall

Summary: Constraint-based explanations have dominated theories of size-related patterns in nature. However, we propose a new theory that predicts metabolic allometry arises as a consequence of the optimization of growth and reproduction to maximize fitness within a finite life. Our theory is free of physical geometric constraints and suggests that metabolic allometry can be explained without invoking traditionally assumed constraints.

JOURNAL OF EXPERIMENTAL BIOLOGY (2023)

Article Zoology

Morphological shifts in response to spatial sorting on dispersal behaviour in red flour beetles across multiple generations

P. A. Arnold, P. Cassey, C. R. White

Summary: Dispersal plays a crucial role in individual fitness, population dynamics, and range expansion. The spatial sorting of phenotypes at range edges and invasion fronts can lead to changes in morphological traits related to dispersal. However, different study systems exhibit varying responses to spatial sorting, and separating spatial sorting from natural selection and population dynamics is challenging.

JOURNAL OF ZOOLOGY (2023)

Editorial Material Multidisciplinary Sciences

Response to Comments on Metabolic scaling is the product of life-history optimization

Craig R. White, Lesley A. Alton, Candice L. Bywater, Emily J. Lombardi, Dustin J. Marshall

Summary: Froese and Pauly argue that our model contradicts the observation that fish reproduce before their growth rate decreases. Kearney and Jusup show that our model incompletely describes growth and reproduction for some species. Here, we discuss the costs of reproduction, the relationship between reproduction and growth, and propose tests of models based on optimality and constraint.

SCIENCE (2023)

Article Ecology

Linking physiology and climate to infer species distributions in Australian skinks

Rodolfo O. Anderson, Reid Tingley, Conrad J. Hoskin, Craig R. White, David G. Chapple

Summary: Climate has a significant impact on animal physiology, which in turn affects geographic distributions. However, the mechanisms connecting climate, physiology, and distribution are not fully understood.

JOURNAL OF ANIMAL ECOLOGY (2023)

Article Biology

Long-term effects of incubation temperature on growth and thermal physiology in a small ectotherm

Madeleine J. De Jong, Lesley A. Alton, Craig R. White, Moira K. O'Bryan, David G. Chapple, Bob B. M. Wong

Summary: Incubation temperature has lasting effects on growth, locomotor performance, and metabolic rate of skink offspring. Cool and hot incubation temperatures result in faster growth and larger maximum size, while hot incubation temperatures reduce locomotor performance. Effects on metabolic rate are present in sub-adults, with higher rates in cool-incubated lizards. Additionally, cool and hot incubation treatments result in shorter sperm midpieces and heads.

PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES (2023)

Review Physiology

How and Why Does Metabolism Scale with Body Mass?

Craig R. White, Dustin J. Marshall

Summary: Most explanations for the relationship between body size and metabolism are based on physical constraints, which limit their predictive capacity. Contemporary approaches to studying metabolic rate and life history need more pluralism.

PHYSIOLOGY (2023)

Article Biodiversity Conservation

Bearing all Down Under: the role of Australasian countries in the illegal bear trade

Phillip Cassey, Lalita Gomez, Sarah Heinrich, Pablo Garcia-Diaz, Sarah Stoner, Chris R. Shepherd

Summary: Illegal wildlife trade, particularly in bear parts and derivatives, poses a significant threat to global conservation efforts. Analyzing seizures in Australia and New Zealand revealed the involvement of numerous countries in the illegal bear trade, highlighting the need for international collaboration to combat transnational smuggling and protect bear species.

PACIFIC CONSERVATION BIOLOGY (2022)

暂无数据