FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term embryonic/larval fat body ID (Ontology) FBbt:00001704 (Fly Anatomy)
Definition Fully developed fat body of the late embryo (from stage 17 onward) or the larva. It is a bilateral, multilobed organ that extends the length of the insect (Butterworth et al., 1965). It is one cell thick and between one and ten cells wide (Butterworth et al., 1965). Large holes and clefts form during stage 17, giving the fat body its definitive larval form (Campos-Ortega and Hartenstein, 1997).[ FlyBase:FBrf0017184 FlyBase:FBrf0089570 FlyBase:FBrf0238315 ]
Also Known As "larval fat body" ; "larval fatbody"
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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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 Alleles Genes Insertions Constructs
 embryonic/larval fat body (all annotations which use CV term, excluding "NOT" statements)
     embryonic/larval fat body | adult stage
      --
      --
     embryonic/larval fat body | cell autonomous | larval stage | somatic clone
      --       --
     embryonic/larval fat body | conditional | somatic clone
      --       --       --
     embryonic/larval fat body | early third instar larval stage
      --       --
     embryonic/larval fat body | early third instar larval stage | calorie restriction conditional
      --       --       --
     embryonic/larval fat body | embryonic stage
      --       --       --
     embryonic/larval fat body | larval stage
      --
     embryonic/larval fat body | larval stage | nutrition conditional
      --       --       --
     embryonic/larval fat body | larval stage | somatic clone
      --
     embryonic/larval fat body | larval stage | somatic clone | calorie restriction conditional
      --       --
     embryonic/larval fat body | larval stage | somatic clone | conditional
      --       --
     embryonic/larval fat body | larval stage | somatic clone | nutrition conditional
      --       --
     embryonic/larval fat body | late third instar larval stage
      --       --
     embryonic/larval fat body | nutrition conditional
      --
      --
     embryonic/larval fat body | prepupal stage
      --       --
     embryonic/larval fat body | pupal stage
      --       --
     embryonic/larval fat body | second instar larval stage
      --
     embryonic/larval fat body | second instar larval stage | somatic clone
      --       --       --
     embryonic/larval fat body | somatic clone
      --
     embryonic/larval fat body | somatic clone | calorie restriction conditional
      --       --
     embryonic/larval fat body | somatic clone | third instar larval stage
      --
     embryonic/larval fat body | somatic clone | wandering third instar larval stage | nutrition conditional
      --       --
     embryonic/larval fat body | temperature conditional
      --       --
     embryonic/larval fat body | third instar larval stage
      --
     embryonic/larval fat body | third instar larval stage | nutrition conditional
      --       --
     embryonic/larval fat body | ventral
      --       --       --
     embryonic/larval fat body | wandering third instar larval stage
      --
     embryonic/larval fat body | wandering third instar larval stage | nutrition conditional
      --
      --
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larva
 |__larval adipose system______________
adipose system                         |
 |__larval adipose system______________|
 |__fat body___________________________|
portion of tissue                      |
 |__fat body___________________________|
trunk mesoderm derivative              |
 |__somatic trunk mesoderm derivative__|
                                       embryonic/larval fat body  1866 rec.
                                        |__embryonic/larval fat body region 1
                                        |__embryonic/larval fat body region 2'
                                        |__embryonic/larval fat body region 2''
                                        |__embryonic/larval fat body region 3'
                                        |__embryonic/larval fat body region 3''
                                        |__embryonic/larval fat body region 4
                                        |__embryonic/larval fat body region 5
                                        |__embryonic/larval fat body region 6
                                        |__larval fat cell of larval fat body 69 rec.
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Is a fat body
somatic trunk mesoderm derivative
Develops from fat body primordium
Part of larval adipose system
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