principle of allocation

synonym: concept of strategy
https://doi.org/10.1351/goldbook.14952
Concept that there exists a cost or trade-off to every allocation of energy resources. Energy spent by an individual organism on one function, process, or structure cannot be spent on another. Optimal allocation of resources enhances Darwinian fitness.
Source:
PAC, 2009, 81, 829. (Glossary of terms used in ecotoxicology (IUPAC Recommendations 2009)) on page 932 [Terms] [Paper]