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September 10, 2025ICES Journal of Marine ScienceOpen Access

Modelling krill growth, reproduction, and metabolism to predict life-history responses to environmental change

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Authors

HZHaiting ZhangSWSimon WotherspoonACAndrew Constable

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Overview

Study adapts an energetics model to predict krill growth and reproduction under changing environmental conditions, indicating potential declines.

Key Points

  • The model indicates lower fecundity for older krill (3+ years) under projected business-as-usual scenarios, showing significant response to environmental changes.
  • Results revealed optimal reproductive performance occurs with a diet of 40% lipid and 60% protein, linked to lipid content of prey, affecting krill success.
  • Energy allocation was effectively modeled, showing distinct pathways from lipid and protein sources, aligning with observed growth trajectories and reproduction rates.
  • The case study for South Georgia highlights the challenges krill may face from high water temperatures and reduced carbon availability, threatening survival.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/68c1d97d54b1d3bfb60fb0bbhttps://doi.org/10.1093/icesjms/fsaf093
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