identifier: traitmech:000177
label: specialist
definition: A phenotype describing an organism with a narrow ecological niche, restricted
  to a limited range of environments or resources.
definition_source: DOI:10.1093/femsec/fiaa240
trait_category: OTHER
term_kind: CLASS
mapping_status: PROPOSED
parent_traits:
- METPO:1000059
evidence:
- reference: DOI:10.1093/femsec/fiaa240
  snippet: Organisms are often categorized as generalists or specialists, corresponding
    to broad or narrow niche requirements
  notes: Bell and Bell frame specialists as organisms with narrow niche requirements,
    contrasting them with bacterial generalists.
- reference: DOI:10.1038/s41559-023-02027-7
  snippet: Generalists can survive in many environments, whereas specialists are restricted
    to a single environment.
  notes: The social-niche-breadth study defines specialists as environmentally restricted
    prokaryotes while contrasting them with generalists.
curation_history:
- timestamp: '2026-09-13T17:05:41Z'
  curator: codex
  action: MINTED_TRAITMECH_ID
  changes: Minted specialist as a DOI-backed TraitRecord after a repository-wide duplicate
    review covering ignored and hidden files; the local METPO snapshot has no exact
    specialist class and the replacement placeholder is reserved in proposals/metpo_traitmech_v54.
  llm_assisted: true