FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term primary gonial cell ID (Ontology) FBbt:00004934 (Fly Anatomy)
Definition Daughter of a male germline stem cell. Unlike its sister, which will remain a stem cell, the primary gonial cell is displaced laterally from the hub cells, where it becomes enclosed by two 'cyst cells'. Morphology is much like its stem cell sister.[ FlyBase:FBrf0064778 ]
Also Known As "gonialblast" ; "primary spermatogonial cell"
Comment Note - there is some confusion in the use of this term in the historical literature. The male germline stem cell is sometimes referred to as the 'primary spermatogonia'.
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Direct annotations: records annotated with this exact term (child terms are NOT included)
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  Insertions Constructs
 primary gonial cell (all annotations which use CV term, excluding "NOT" statements)
     primary gonial cell | increased number
      --       --       --
     primary gonial cell | somatic clone | spermatogenesis
      --       --       --       --
     primary gonial cell | spermatogenesis
      --       --       --
     primary gonial cell | third instar larval stage
      --       --
      --
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spermatogonial cyst__
male germline cell___|
                     spermatogonium
                      |__primary gonial cell  61 rec.
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CL:0000020