FB2026_03 , released September 17, 2026
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Term pupal tracheal section ID (Ontology) FBbt:00002956 (Fly Anatomy)
Definition Section of the pupal tracheal system. The basic framework (primary trachea) develop using the larval trachea of tracheal metameres 1-5 as a template (Whitten, 1957). But the new branches that develop from this basic framework are limited to the pupal and pharate adult stages have a distinct morphology. New pupal branches appear as many grape-like clusters of tracheoles lying free in the body cavity. Each cluster contains many fine tracheoles, with as many as 100 arising from a single point. Each tracheolar initially cell has a tightly coiled, snail-like tracheolar lumen that uncoils during the pupal period, extending towards and attaching to the developing pharate adult tissues.[ FlyBase:FBrf0011558 FlyBase:FBrf0034081 FlyBase:FBrf0064787 ]
CommentThe embryonic/larval dorsal branches posterior to tracheal metamere 5 collapse and are non-functional in the pupa - although may be maintained in a non-functional state as a template for growth of the adult system (Manning and Krasnow, 1993).
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Data ClassFieldDirect annotations
Alleles (FBal)PHENOTYPE_MANIFEST_IN
Constructs (FBtp)PHENOTYPE_MANIFEST_IN
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 pupal tracheal section (all annotations which use CV term, excluding "NOT" statements)
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pupa
 |__pupal tracheal system__
tracheal system            |
 |__pupal tracheal system__|
 |__tracheal section_______|
epithelial tube            |
 |__tracheal section_______|
                           pupal tracheal section  68 rec.
                            |__pupal abdominal tracheal branch 15 rec.
                            |__pupal cerebral tracheal anastomosis
                            |__pupal cerebral tracheal branch
                            |__pupal cerebropharyngeal tracheal branch
                            |   |__pupal cerebral tracheal branch
                            |   |__pupal pharyngeal tracheal branch
                            |__pupal dorsal tracheal branch
                            |   |__pupal dorsal tracheal branch 1
                            |   |__pupal dorsal tracheal branch 2
                            |   |__pupal dorsal tracheal branch 3
                            |   |__pupal dorsal tracheal branch 4
                            |   |__pupal dorsal tracheal branch 5
                            |   |__tracheocyte of pupal dorsal tracheal branch
                            |__pupal ganglionic tracheal branch
                            |   |__pupal ganglionic tracheal branch 0
                            |   |__pupal ganglionic tracheal branch 1
                            |   |__pupal ganglionic tracheal branch 2
                            |   |__tracheocyte of pupal ganglionic tracheal branch
                            |__pupal haltere tracheal branch
                            |__pupal leg tracheal branch 1 rec.
                            |   |__pupal mesothoracic leg tracheal branch
                            |   |__pupal metathoracic leg tracheal branch
                            |   |__pupal prothoracic leg tracheal branch
                            |__pupal pharyngeal tracheal branch
                            |__pupal spiracular tracheal branch
                            |   |__pupal spiracular tracheal branch 1
                            |   |__pupal spiracular tracheal branch 2
                            |   |__pupal spiracular tracheal branch 3
                            |   |__pupal spiracular tracheal branch 4
                            |   |__pupal spiracular tracheal branch 5
                            |   |__tracheocyte of pupal spiracular tracheal branch
                            |__pupal tracheal dorsal trunk 9 rec.
                            |   |__tracheocyte of pupal tracheal dorsal trunk
                            |__pupal tracheal lateral trunk 3 rec.
                            |   |__tracheocyte of pupal tracheal lateral trunk
                            |__pupal tracheal transverse connective 1 rec.
                            |   |__pupal tracheal transverse connective 1
                            |   |__pupal tracheal transverse connective 2
                            |   |__pupal tracheal transverse connective 3
                            |   |__pupal tracheal transverse connective 4
                            |   |__tracheocyte of pupal tracheal transverse connective
                            |__pupal ventral tracheal anastomosis
                            |   |__pupal ventral tracheal anastomosis 0
                            |   |__pupal ventral tracheal anastomosis 1
                            |   |__pupal ventral tracheal anastomosis 2
                            |__pupal ventral tracheal branch
                            |   |__pupal ventral tracheal branch 0
                            |   |__pupal ventral tracheal branch 1
                            |   |__pupal ventral tracheal branch 2
                            |__pupal wing tracheal branch
                            |__secondary tracheal branch 43 rec.
                                |__embryonic/larval dorsal group tracheal branch(+)
                                |__embryonic/larval lateral group tracheal branch(+) 30 rec.
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Is a tracheal section
Part of pupal tracheal system
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  • "pupal trachea" RELATED
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