FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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Term ventral cibarial sense organ ID (Ontology) FBbt:00004143 (Fly Anatomy)
Definition Ventral-most cibarial gustatory sense organ near the upper end of the posterior cibarial plate of the adult pharynx, and innervated by the pharyngeal nerve (Demerec, 1994; Nayak and Singh, 1983). It is flanked distally and proximally by the ventral row bristles and the dorsal row bristles, respectively. It comprises three sensilla (distal, middle and proximal), containing in total about 8 gustatory receptor neurons.[ FlyBase:FBrf0035962 FlyBase:FBrf0068700 FlyBase:FBrf0074012 FlyBase:FBrf0075527 FlyBase:FBrf0167539 ]
Also Known As "VCSO"
Comment Nayak & Singh (1983) claim the ventral cibarial sense organ is composed of two sensilla: the ventral and the dorsal sensilla. In contrast, Montell (2009), Vosshall & Stocker (2007), and Stocker & Schorderet (1981) report three sensilla: the proximal, the middle and the distal sensilla. This is shown via enhancer trap activity in Gendre et al., 1994. We follow the report of three sensilla. Similarly, the number of chemosensory neurons varies: both Nayak & Singh (1983), and Stocker (1994) report 6, whilst Gendre et al. (1994), Montell (2009), and Vosshall & Stocker (2007) report 8. We follow the latter.
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Insertions (FBti)EXPRESSION_STAGE_TISSUE_POSITION
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 ventral cibarial sense organ (all annotations which use CV term, excluding "NOT" statements)
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adult sense organ
 |__cibarial sense organ_________
pharyngeal sense organ           |
 |__cibarial sense organ_________|
adult cibarium                   |
 |__cibarial sense organ_________|
cibarial plate                   |
 |__posterior plate of cibarium__|
internal compound sense organ    |
 |__cibarial sense organ_________|
                                 ventral cibarial sense organ  5 rec.
                                  |__distal sensillum of ventral cibarial sense organ
                                  |__middle sensillum of ventral cibarial sense organ
                                  |__proximal sensillum of ventral cibarial sense organ
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Is a cibarial sense organ
Part of posterior plate of cibarium
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