76–88 — ONTOGENETIC ENERGY STATES
These are not a universal linear sequence. Some are absent in particular lineages, and several may recur.
Operational definition
Layer type: Developmental and life-trajectory layer Governs: Items 76–88
Formal definition
The Life-Course and Ontogenetic Energy States layer identifies how energy source, dependency, acquisition capacity, allocation priority, storage, reproduction, maintenance, and postmortem fate change across the existence of a biological individual or propagating unit.
“Life-Course” is added because the layer includes more than strict development: it also includes recurrent dormancy, senescence, death, and the post-organismal detrital state.
Governing question
Where is the focal system within its energetic life trajectory, and what energetic problem dominates that position?
Included states
- pre-provisioned propagule;
- activation and establishment;
- dependent or subsidized state;
- autonomous acquisition and growth;
- mature maintenance;
- reproductive preparation;
- reproductive export;
- parental or post-fertilization investment;
- recurrent reserve building;
- recurrent dormancy;
- senescence;
- death;
- post-organismal detrital state.
Inclusion rule
A state belongs here when its energetic character is principally determined by position within development, reproduction, aging, or the transition out of integrated life.
Nonlinear rule
These are not mandatory steps in a universal sequence.
Depending upon the organism:
- some states may be absent;
- some may recur;
- some may overlap;
- the order may differ;
- reproduction may be clonal rather than gametic;
- senescence may be negligible or modular;
- dormancy may occur many times.
Distinction from metabolic activity
A seed may be in:
- the ontogenetic state of a pre-provisioned propagule;
- the metabolic state of suppression;
- the storage condition of possessing developmental reserves;
- the temporal strategy of seasonal germination.
The layers describe different aspects of the same entity.
Scale rule
Death and life-course state must be tied to the defined unit.
A cell may die while:
- the tissue survives;
- the organism survives;
- the colony survives.
Likewise, a modular organism may lose old modules while the genetic individual continues.
76. Pre-provisioned propagule
Examples:
- egg
- seed
- spore
- cyst
- bud
- clonal fragment
Primary energy source:
inherited reserves
77. Activation and establishment
Inherited reserves fund:
- membrane activation
- transcription
- translation
- germination
- hatching
- emergence
- initial growth
78. Dependent or subsidized state
Energy and material are supplied through:
- placenta
- milk
- parental feeding
- host tissue
- symbiotic partner
- colony members
79. Autonomous acquisition and growth
The individual’s own capture systems become sufficient to support:
- maintenance
- biomass increase
- increasing independence
80. Mature maintenance
Energy allocation shifts away from establishment and toward:
- maintenance
- activity
- competition
- storage
- reproduction
81. Reproductive preparation
- gametogenesis
- courtship structures
- migration to reproductive sites
- flowering
- fruiting-body formation
- reserve mobilization
82. Reproductive export
Matter, chemical free energy, cellular machinery, and hereditary information are transferred into descendants.
83. Post-reproductive or parental investment
- gestation
- brooding
- lactation
- feeding
- protection
- nest maintenance
- teaching
- colony provisioning
84. Recurrent reserve-building state
Occurs before:
- winter
- drought
- migration
- reproduction
- metamorphosis
- dormancy
85. Recurrent dormant state
The organism temporarily minimizes throughput.
86. Senescent state
Possible energetic changes include:
- declining acquisition efficiency
- reduced conversion efficiency
- altered mitochondrial or membrane function
- greater repair burden
- reserve loss
- altered reproductive allocation
Senescence is not reducible to energy failure alone; energetic deterioration is one component of a larger multifactorial process.
87. Death
Bioenergetically:
coordinated homeostatic energy transduction ceases
Consequences include collapse of:
- membrane potentials
- ion gradients
- controlled redox states
- active transport
- molecular turnover
- organized repair
88. Post-organismal detrital state
Remaining matter and chemical free energy become available to:
- scavengers
- detritivores
- decomposers
- parasites
- microbial communities