FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term ovariole ID (Ontology) FBbt:00004893 (Fly Anatomy)
Definition An egg assembly line. Consists of a germarium at the anterior tip connected to a chain of egg chambers, each one more mature than the preceding, more anterior egg chamber in the chain. Each ovariole is encased in an ovarian sheath. A typical ovary contains about 16 ovarioles.[ FlyBase:FBrf0064777 ]
Comment DISAMBIGUATION: The term ovariole is sometimes incorrectly used to refer to individual egg chambers. Please use the term 'egg chamber' for this.
Links to External Ontologies
Annotations
Records annotated with this term OR any of its CHILD TERMS
Records annotated with this exact term (annotations to child terms are NOT included)
Data Class Field Records
Alleles (FBal)  PHENOTYPE_MANIFEST_IN     319
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      80
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      77
show Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Images Insertions Constructs
 ovariole (all annotations which use CV term, excluding "NOT" statements)     319     24      1     82     78
     ovariole | absent       5       --       --       2      4
     ovariole | adult stage       6       --       --       1      5
     ovariole | decreased number       1       --       --       1       --
     ovariole | germline clone      62       --       --      13       --
     ovariole | germline clone | maternal effect       2       --       --       --       --
     ovariole | heat sensitive       3       --       --       --       1
     ovariole | increased number       2       --       --       2       --
     ovariole | maternal effect | cold sensitive       1       --       --       --       --
     ovariole | non-rescuable maternal effect       1       --       --       1       --
     ovariole | pupal stage       1       --       --       1       --
     ovariole | somatic clone       5       --       --       --       --
Spanning Tree (Parents/Children)
Only view relationship:
anatomical structure
 |__multicellular structure____________
anatomical entity                      |
 |__female-specific anatomical entity__|
                                       ovariole  6803 rec.
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Is a female-specific anatomical entity
multicellular structure
Part of ovary
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