FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term outer photoreceptor cell ID (Ontology) FBbt:00006007 (Fly Anatomy)
Definition An eye photoreceptor cell whose rhabdomere is part of the outer trapezoid of rhabdomeres of each ommatidium. There are six of these per ommatidium. Each has a single axon that projects along a single lamina optic cartridge within which it makes extensive synaptic connections before terminating in the proximal lamina. It is strongly presynaptic to lamina monopolar neurons L1 and L2 and the lamina intrinsic (amacrine) neuron (Rivera-Alba et al., 2011).[ FlyBase:FBrf0054529 FlyBase:FBrf0064798 FlyBase:FBrf0216925 ]
Also Known As "photoreceptor cell R1-6"
Comment
Links to External Ontologies
VFB:FBbt_00006007
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      56
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       1
Insertions (FBti)  PHENOTYPE_MANIFEST_IN      11
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN      28
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  Insertions Constructs
 outer photoreceptor cell (all annotations which use CV term, excluding "NOT" statements)      59      7     17     12     31
     outer photoreceptor cell | adult stage      13       --       --       9      2
     outer photoreceptor cell | adult stage | decreased number       3       --       --       --       3
     outer photoreceptor cell | adult stage | progressive       1       --       --       --       --
     outer photoreceptor cell | adult stage | somatic clone       1       --       --       --       --
     outer photoreceptor cell | conditional       1       --       --       --       --
     outer photoreceptor cell | decreased number | larval stage | somatic clone - tissue specific       1       --       --       --       --
     outer photoreceptor cell | ectopic       3       --       --       --       3
     outer photoreceptor cell | increased number       4       --       --       --       1
     outer photoreceptor cell | pupal stage       3       --       --       --       --
     outer photoreceptor cell | pupal stage | somatic clone       3       --       --       1       --
     outer photoreceptor cell | somatic clone       4       --       --       --       5
     outer photoreceptor cell | third instar larval stage       2       --       --       --       --
Spanning Tree (Parents/Children)
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sensory organ cell______________
rhabdomeric photoreceptor cell__|
adult histaminergic neuron______|
adult sensory neuron____________|
adult PNS neuron________________|
                                eye photoreceptor cell
                                 |__outer photoreceptor cell  607 rec.
                                     |__photoreceptor cell R1 296 rec.
                                     |__photoreceptor cell R2 246 rec.
                                     |__photoreceptor cell R3 336 rec.
                                     |__photoreceptor cell R4 355 rec.
                                     |__photoreceptor cell R5 250 rec.
                                     |__photoreceptor cell R6 280 rec.
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Is a eye photoreceptor cell
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Synonyms
  • "photoreceptor cell R1-6" EXACT
Secondary IDs
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FlyBrain_NDB:10111
VFB:FBbt_00006007