FB2026_03 , released September 17, 2026
CV Term Report
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Term adult fruitless aSP-k (female) neuron ID (Ontology) FBbt:00110469 (Fly Anatomy)
Definition Adult fruitless neuron of the female with its cell body lateral to the lateral horn, dendritic arborization in the lateral horn and axonal projections to the lateral protocerebral complex (Yu et al., 2010). It receives input in the wedge and outputs onto and inhibits the female doublesex pMN2 (vpoDN) neuron (Wang et al., 2021). Most of its synaptic terminals are in the anterior ventrolateral protocerebrum (Yu et al., 2010; Baker et al., 2022). A projection also extends across the midline (Yu et al., 2010; Baker et al., 2022). It preferentially responds to male sine song, rather than pulse song (Baker et al., 2022). There are approximately 20 of these cells per hemisphere (Cachero et al., 2010).[ FlyBase:FBrf0205974 FlyBase:FBrf0211884 FlyBase:FBrf0211926 FlyBase:FBrf0221438 FlyBase:FBrf0247919 FlyBase:FBrf0254226 ]
Also Known As"adult female fruitless aSP8 neuron" ; "female aSP-k neuron" ; "female aSP3c neuron" (for all, see Synonyms field below)
CommentWang et al. (2020) - FBrf0247919 states that aSP-k neurons are probably a subset of vpoIN. Based on Hemibrain data, all these (aSP8) cells cross the midline, so probably correspond to the 'commissural' subset of vpoIN neurons, AVLP_pr02, in Baker et al. (2022) - FBrf0254226.
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VFB:FBbt_00110469
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 adult fruitless aSP-k (female) neuron (all annotations which use CV term, excluding "NOT" statements)
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supraesophageal ganglion neuron
 |__adult fruitless aSP-k neuron_____________
female organism                              |
 |__vaginal plate opening inhibitory neuron__|
GABAergic neuron                             |
 |__adult GABAergic neuron___________________|
fruitless expressing neuron                  |
 |__adult fruitless aSP-k neuron_____________|
adult neuron                                 |
 |__vaginal plate opening inhibitory neuron__|
 |__adult GABAergic neuron___________________|
adult lateral horn neuron                    |
 |__adult fruitless aSP-k neuron_____________|
adult CNS neuron                             |
 |__adult fruitless aSP-k neuron_____________|
auditory system neuron                       |
 |__vaginal plate opening inhibitory neuron__|
                                             adult fruitless aSP-k (female) neuron  3 rec.
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Is a vaginal plate opening inhibitory neuron
adult fruitless aSP-k neuron
adult GABAergic neuron
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VFB:FBbt_00110469