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Comparative kinetics of embryo development

C Zonneveld1, S A Kooijman

  • 1Department of Theoretical Biology, Vrije Universiteit, Amsterdam, The Netherlands.

Bulletin of Mathematical Biology
|May 1, 1993
PubMed
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This study presents an embryo energetics model applicable across diverse species, from snails to mammals. Adjusting for increased embryonic temperature during development improved model fits for altricial birds, aligning their parameters with other animals.

Area of Science:

  • Developmental biology
  • Comparative physiology
  • Bioenergetics

Background:

  • Understanding embryo energetics is crucial for developmental biology.
  • Existing models often simplify energy dynamics during embryonic development.
  • Species-specific variations in energy utilization present modeling challenges.

Purpose of the Study:

  • To develop and validate a comprehensive model of embryo energetics.
  • To assess the model's applicability across a wide range of species.
  • To investigate and account for species-specific differences in embryonic energy metabolism.

Main Methods:

  • Fitted an energetics model based on energy uptake, storage, and utilization to literature data.
  • Utilized state variables for volume and energy storage, relating them to embryo and yolk weight.

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  • Incorporated embryo temperature changes to refine metabolic rate calculations.

    • Main Results:

    • The model demonstrated good fits for diverse species, including snails and mammals, with minor early-phase deviations.
    • Initial parameter values for altricial birds differed significantly from other species.
    • Accounting for increased embryo temperature during development improved parameter consistency across species.

    Conclusions:

    • The developed embryo energetics model provides a robust framework for studying developmental energy dynamics.
    • Embryonic temperature increase is a key factor influencing metabolic rates and requires consideration in comparative studies.
    • The model's refinement allows for better understanding of energy utilization across different vertebrate and invertebrate species.