FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
Help Close All Open All
General Information
Term pale ommatidium ID (Ontology) FBbt:02000002 (Fly Anatomy)
Definition Ommatidial subtype with stochastic distribution throughout the retina, making up about 30% of all non-dorsal margin ommatidia. This ommatidial subtype is specialized to detect shorter wavelengths (near UV + blue) than yellow ommatidia.[ FlyBase:FBrf0180690 ]
Comment The pale ommatidium expresses the near ultraviolet-specific opsin Rh3 (FBgn0003249) in photoreceptor R7 cells and the blue-sensitive Rh5 (FBgn0014019) in photoreceptor R8 cells (Wernet and Desplan, 2004).
Links to External Ontologies
VFB:FBbt_02000002
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       5
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
 pale ommatidium (all annotations which use CV term, excluding "NOT" statements)       5
     pale ommatidium | ectopic       1
     pale ommatidium | ectopic | somatic clone       1
     pale ommatidium | heat sensitive       2
     pale ommatidium | somatic clone       1
Spanning Tree (Parents/Children)
Only view relationship: 
photoreceptor_________
external sensillum____|
adult head sensillum__|
                      ommatidium
                       |__pale ommatidium  62 rec.
Spanning Tree View Settings
Parents/Children
View Depth
Show hierarchy levels: for parents, for children
hide Relationships
Is a ommatidium
Part of
hide Synonyms & Secondary IDs
Synonyms
Secondary IDs
hide External Crossreferences & Linkouts
VFB:FBbt_02000002