FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term tracheal metamere ID (Ontology) FBbt:00005025 (Fly Anatomy)
Definition Segmental subdivision of the tracheal system. The most anterior tracheal metamere corresponds to the mesothoracic segment, whereas the most posterior corresponds to abdominal segment 8.[ FlyBase:FBrf0034081 FlyBase:FBrf0064787 ]
CommentAccording to Whitten (1980), the most anterior tracheal metamere corresponds to the prothoracic segment.
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 tracheal metamere (all annotations which use CV term, excluding "NOT" statements)
     tracheal metamere | embryonic stage
      --
     tracheal metamere | embryonic stage 15
     tracheal metamere | somatic clone
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organ system
 |__tracheal system________________________
organ system subdivision                   |
 |__segmental subdivision of organ system__|
                                           tracheal metamere  166 rec.
                                            |__abdominal tracheal metamere 46 rec.
                                            |   |__adult abdominal spiracular tracheal branch(+) 1 rec.
                                            |   |__tracheal metamere 3(+) 28 rec.
                                            |   |__tracheal metamere 4(+) 16 rec.
                                            |   |__tracheal metamere 5(+) 19 rec.
                                            |   |__tracheal metamere 6(+) 13 rec.
                                            |   |__tracheal metamere 7(+) 18 rec.
                                            |   |__tracheal metamere 8(+) 14 rec.
                                            |   |__tracheal metamere 9(+) 16 rec.
                                            |   |__tracheal metamere 10(+) 15 rec.
                                            |__thoracic tracheal metamere 126 rec.
                                                |__tracheal metamere 1(+) 121 rec.
                                                |__tracheal metamere 2(+) 24 rec.
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Is a segmental subdivision of organ system
Part of tracheal system
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