FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval DA3 motor neuron ID (Ontology) FBbt:00110231 (Fly Anatomy)
Definition Larval motor neuron that innervates dorsal acute muscle 3 (muscle 3) via type Ib synapses (Landgraf et al., 1997; Hoang and Chiba, 2001; Meng et al., 2019). It is the fourth-born U neuron, developing from the fifth ganglion mother cell that differentiates from neuroblast NB7-1 (Seroka et al., 2020). It has a monopolar morphology and its dendrites remain ipsilateral (Seroka and Doe, 2019; Meng et al., 2019).[ FlyBase:FBrf0064795 FlyBase:FBrf0099344 FlyBase:FBrf0112030 FlyBase:FBrf0132289 FlyBase:FBrf0190540 FlyBase:FBrf0208790 FlyBase:FBrf0241992 FlyBase:FBrf0243538 FlyBase:FBrf0246311 ]
Also Known As "MN-DA3 neuron" ; "MN3-Ib" ; "U4 motor neuron" (for all, see Synonyms field below)
Comment
Links to External Ontologies
VFB:FBbt_00110231
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      10
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       3
Insertions (FBti)  PHENOTYPE_MANIFEST_IN       2
Constructs (FBtp)  PHENOTYPE_MANIFEST_IN       4
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 Full annotation statements 
Relevant FlyBase reports
 Alleles Genes Insertions Constructs
 larval DA3 motor neuron (all annotations which use CV term, excluding "NOT" statements)      10      3      5      4
     larval DA3 motor neuron | embryonic stage | increased number       1       --       1       --
     larval DA3 motor neuron | increased number       1       --       --       --
Spanning Tree (Parents/Children)
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lineage NB7-1 primary motor neuron
 |__U neuron_______________________________
motor neuron                               |
 |__type Ib motor neuron___________________|
embryonic/larval motor neuron              |
 |__U neuron_______________________________|
 |__larval internal muscle motor neuron____|
NB7-1 Notch ON hemilineage primary neuron  |
 |__U neuron_______________________________|
                                           larval DA3 motor neuron  22 rec.
                                            |__larval A1-7-innervating DA3 motor neuron 1 rec.
                                                |__larval DA3 motor neuron of abdominal 1 neuromere
                                                |__larval DA3 motor neuron of abdominal 2 neuromere
                                                |__larval DA3 motor neuron of abdominal 3 neuromere
                                                |__larval DA3 motor neuron of abdominal 4 neuromere
                                                |__larval DA3 motor neuron of abdominal 5 neuromere
                                                |__larval DA3 motor neuron of abdominal 6 neuromere
                                                |__larval DA3 motor neuron of metathoracic neuromere
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Is a U neuron
type Ib motor neuron
larval internal muscle motor neuron
Develops from ganglion mother cell GMC7-1e
Part of
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Synonyms
Secondary IDs
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VFB:FBbt_00110231