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Related Experiment Video

Updated: Jun 22, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

Published on: July 30, 2019

How could the Gompertz-Makeham law evolve.

¹Institute of Experimental Medicine, 12 Akademika Pavlova Str., Saint-Petersburg 197376, Russia. lxglbv@rambler.ru

Journal of Theoretical Biology

|June 4, 2009

Summary

Biological mortality arises from chemical decomposition, with aging linked to declining disintegration barriers (E). This explains age-related mortality patterns and aligns with antagonistic pleiotropy theory in aging research.

Area of Science:

Biophysics
Evolutionary Biology
Biochemistry

Background:

Life's origin is rooted in chemical processes.
Biological systems inherit chemical decomposition kinetics.
The Arrhenius equation describes chemical decomposition (k = A*exp(-E/RT)).

Purpose of the Study:

To propose a model for biological mortality kinetics originating from chemical decomposition.
To explain age-related mortality patterns and survivorship curves.
To link functional decline to resource allocation and antagonistic pleiotropy.

Main Methods:

Applying chemical decomposition kinetics (Arrhenius equation) to biological mortality.
Developing numerical models to simulate functional changes and mortality.

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Last Updated: Jun 22, 2026

Modeling the Size Spectrum for Macroinvertebrates and Fishes in Stream Ecosystems

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Age-dependent Dynamics of Locomotion in Caenorhabditis elegans: A Lyapunov Exponent Analysis

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Published on: September 23, 2025

Utilizing the generalized Gompertz-Makeham law to describe mortality trajectories.

Main Results:

Mortality kinetics in biology shifts focus from temperature (T) to disintegration barrier energy (E).
Declining E with age leads to exponential mortality rise and characteristic survivorship curves.
Model supports antagonistic pleiotropy: functional decline enhances progeny investment.

Conclusions:

Biological aging and mortality are explained by evolved chemical decomposition kinetics.
The model elucidates mid-age functional decline and its deceleration.
Initial vitality correlates positively with the rate of aging, consistent with evolutionary trade-offs.