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Optimum growth temperature declines with body size within fish species

Lindmark, Max and Ohlberger, Jan and Gårdmark, Anna (2022). Optimum growth temperature declines with body size within fish species. Global Change Biology. 28 :7 , 2259-2271
[Research article]

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According to the temperature-size rule, warming of aquatic ecosystems is generally predicted to increase individual growth rates but reduce asymptotic body sizes of ectotherms. However, we lack a comprehensive understanding of how growth and key processes affecting it, such as consumption and metabolism, depend on both temperature and body mass within species. This limits our ability to inform growth models, link experimental data to observed growth patterns, and advance mechanistic food web models. To examine the combined effects of body size and temperature on individual growth, as well as the link between maximum consumption, metabolism, and body growth, we conducted a systematic review and compiled experimental data on fishes from 52 studies that combined body mass and temperature treatments. By fitting hierarchical models accounting for variation between species, we estimated how maximum consumption and metabolic rate scale jointly with temperature and body mass within species. We found that whole-organism maximum consumption increases more slowly with body mass than metabolism, and is unimodal over the full temperature range, which leads to the prediction that optimum growth temperatures decline with body size. Using an independent dataset, we confirmed this negative relationship between optimum growth temperature and body size. Small individuals of a given population may, therefore, exhibit increased growth with initial warming, whereas larger conspecifics could be the first to experience negative impacts of warming on growth. These findings help advance mechanistic models of individual growth and food web dynamics and improve our understanding of how climate warming affects the growth and size structure of aquatic ectotherms.

Authors/Creators:Lindmark, Max and Ohlberger, Jan and Gårdmark, Anna
Title:Optimum growth temperature declines with body size within fish species
Series Name/Journal:Global Change Biology
Year of publishing :2022
Page range:2259-2271
Number of Pages:13
Associated Programs and Other Stakeholders:?? SLU.id.library.slu-systematic ??
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:allometry, body growth, climate change, consumption rate, metabolic rate, metabolic theory of ecology, scaling, temperature-size rule, warming
Permanent URL:
Additional ID:
Type of IDID
Web of Science (WoS)000744930800001
ID Code:27414
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Department of Aquatic Resources
Deposited By: SLUpub Connector
Deposited On:21 Mar 2022 10:25
Metadata Last Modified:21 Mar 2022 10:31

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