FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
CV Term Report
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General Information
Term posterior spiracle primordium ID (Ontology) FBbt:00000197 (Fly Anatomy)
Definition Primordium of the posterior spiracle of the larva. Originates in the posterior half of the lateral ectoderm of abdominal segment 8 during stage 12. A group of cells that are more basophilic that those surrounding them form a deep groove and fuse with the posterior arm of the tracheal primordium of A8 (tracheal metamere 10).[ FlyBase:FBrf0089570 ]
Also Known As "embryonic posterior spiracle"
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
Insertions (FBti)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 posterior spiracle primordium (all annotations which use CV term, excluding "NOT" statements)
     posterior spiracle primordium | embryonic stage 15
      --       --
      --
     posterior spiracle primordium | germline clone
      --       --
      --
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embryo
 |__dorsal closure embryo_________________
extended germ band embryo                 |
 |__late extended germ band embryo________|
spiracle primordium                       |
 |__embryonic/larval spiracle primordium__|
                                          posterior spiracle primordium  158 rec.
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Is a embryonic/larval spiracle primordium
Part of late extended germ band embryo
dorsal closure embryo
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Synonyms
  • "embryonic posterior spiracle" EXACT
    "P1 PosSpi" RELATED
    "posterior spiracle specific anlage" RELATED
Secondary IDs
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