intermediate labellar taste bristle [FBbt_00007412]

intermediate labellar taste bristle

ID: FBbt_00007412

Labellar bristle that is approximately 25 micrometers long (Shanbhag et al., 2001). These taste bristles house the sensory dendrites of 2 gustatory receptor neurons (Shanbhag et al., 2001), one sensitive to sugars and low concentrations of salt and the other to bitter and high salt concentrations (Hiroi et al., 2004; Jaeger et al., 2018), and one mechanosensory neuron (Shanbhag et al., 2001).

Shanbhag et al. (2001) and Hiroi et al. (2002) claim there are between 9 and 10 I-type sensilla present. Number, position and identity (short v intermediate) of individual sensilla seems to vary between animals (Shanbhag et al., 2001; Hiroi et al., 2002; Weiss et al., 2011; Jaeger et al., 2018). May infrequently also house a glutamatergic ppk23 neuron (Jaeger et al., 2018).