FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term larval abdominal dorsal multidendritic neuron dda1 ID (Ontology) FBbt:00111650 (Fly Anatomy)
Definition Dendritic arborizing neuron whose cell body is located dorsal to the ddaB neuron in the abdominal segments. Its dendritic arborization projects relatively deep below the cuticle to trachea or muscles. The formation of this neuron depends on the expression of the amos gene (FBgn0003270). It outputs to the ipsilateral larval Jaam2 and contralateral Jaam3 neurons, A27j neuron, and ipsi- and contralateral A02b neuron.[ FlyBase:FBrf0137018 FlyBase:FBrf0157166 FlyBase:FBrf0183734 FlyBase:FBrf0229965 FlyBase:FBrf0231328 ]
Also Known As "dmd1"
Comment These neurons were identified in two EM reconstructions: one of the full CNS of a 6h old first instar larva, and another of abdominal segment 3 of a 12-24h old first instar larva (Heckscher et al., 2015; Schneider-Mizell et al., 2016). For Heckscher et al. (2015) only bilateral connections are reported. The number of identified output synapses in A1 was the following (number in brackets left/right): to Jaam2 (34/25), Jaam3 (35/40). It is still not known if the pattern of connections with Jaam neurons in A1 is replicated in the other abdominal segments (Heckscher et al., 2015). For Schneider-Mizell et al. (2016), the number of connections was estimated from the publication figures. The number of output synapses was the following (number in brackets left/right where available; ipsi- and contralateral connections separated by comma): to A27j (21), A02b (15, 15/15, 15) (Schneider-Mizell et al., 2016).
Links to External Ontologies
VFB:FBbt_00111650
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Data Class Field Records
Insertions (FBti)  EXPRESSION_STAGE_TISSUE_POSITION       2
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 Insertions
 larval abdominal dorsal multidendritic neuron dda1 (all annotations which use CV term, excluding "NOT" statements)       2
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larval dorsal multidendritic neuron
 |__abdominal dorsal multidendritic neuron____
larval abdominal intersegmental nerve neuron  |
 |__abdominal dorsal multidendritic neuron____|
larval abdominal multidendritic neuron        |
 |__abdominal dorsal multidendritic neuron____|
multidendritic neuron                         |
 |__dendritic arborizing neuron_______________|
larval abdominal nerve sensory neuron         |
 |__abdominal dorsal multidendritic neuron____|
                                              larval abdominal dorsal multidendritic neuron dda1  2 rec.
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Is a dendritic arborizing neuron
abdominal dorsal multidendritic neuron
Develops from dorsal abdominal dendritic arborizing neuron precursor cell
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VFB:FBbt_00111650