Allometric scale model reveals temperature effects on growth and reproduction in Daphnia magna

Hideyasu Shimadzu; Miguel Barbosa

doi:10.1038/s41598-025-15593-6

Allometric scale model reveals temperature effects on growth and reproduction in Daphnia magna

Hideyasu Shimadzu, Miguel Barbosa^*

^*Corresponding author for this work

School of Biology

Research output: Contribution to journal › Article › peer-review

Abstract

Climate change amplifies temperature variability, thereby subjecting organisms to increased stress as they more frequently encounter temperatures outside their optimal range. Temperature influences resource distribution across fundamental processes in organisms, such as metabolism, reproduction and overall fitness, yet energy allocation strategies are primarily understood under stable temperature conditions. Predicting organisms’ responses to fluctuating temperatures, however, remains challenging. To address this gap, we develop an allometric growth model to predict energy allocation between growth and reproduction under both constant and variable temperature conditions. The model predictions perform and align well with the observed growth patterns of Daphnia magna, a keystone species in aquatic ecosystems, exposed to various thermal scenarios. Results indicate that exposure to unpredictable

Original language	English
Article number	30952
Pages (from-to)	1-13
Number of pages	13
Journal	Scientific Reports
Volume	15
DOIs	https://doi.org/10.1038/s41598-025-15593-6
Publication status	Published - 22 Aug 2025

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10.1038/s41598-025-15593-6Licence: CC BY

Shimadzu-et-al-2025-Allometric-scale-model-SciRep-15-30952-CCBY
Copyright © The Author(s) 2025. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Final published version, 2.67 MBLicence: CC BY

Allometric scale model reveals temperature effects on growth and reproduction in Daphnia magna (code)
Shimadzu, H. (Creator) & Borges Da Costa Guint Barbosa, M. (Creator), GitHub, 2025
https://github.com/hshimadzu/DaphniaGrowth
Dataset: Software

Cite this

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abstract = "Climate change amplifies temperature variability, thereby subjecting organisms to increased stress as they more frequently encounter temperatures outside their optimal range. Temperature influences resource distribution across fundamental processes in organisms, such as metabolism, reproduction and overall fitness, yet energy allocation strategies are primarily understood under stable temperature conditions. Predicting organisms{\textquoteright} responses to fluctuating temperatures, however, remains challenging. To address this gap, we develop an allometric growth model to predict energy allocation between growth and reproduction under both constant and variable temperature conditions. The model predictions perform and align well with the observed growth patterns of Daphnia magna, a keystone species in aquatic ecosystems, exposed to various thermal scenarios. Results indicate that exposure to unpredictable",

author = "Hideyasu Shimadzu and Miguel Barbosa",

note = "Funding: MB was supported by a postdoctoral fellowship from FCT (SFRH/BPD/82259/2011) and had financial support from CESAM (UIDP/50017/2020; UIDB/50017/2020). HS was partially supported by the Japan Society for the Promotion of Science (KAKENHI Grant Number: JP19K21569; JP21H03402, 25K09165).",

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Allometric scale model reveals temperature effects on growth and reproduction in Daphnia magna

Abstract

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Allometric scale model reveals temperature effects on growth and reproduction in Daphnia magna (code)

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