RIVL, RIVR

Type: Polymodal (interneuron, motor neuron)
In MoW: RIV
Male Wiring Project:
RIVL, RIVR
In Wormbase: RIV, RIVL, RIVR
Lineage: AB plpaapaaa, AB prpaapaaa
Location: Head
Description: Cell bodies are situated subdorsally in the lateral ganglia
Neurotransmitter/ Neuropeptide:
- Acetylcholine
(Pereira et al., 2015)
Innexin expression:
Receptor expression:

Function:
- Functions in locomotion: After animals are removed from bacterial food, they initiate a local search behavior consisting of reversals and deep omega-shaped turns. This is followed by dispersal ~30 min later as reversal and turns are suppressed. Local search behavior is triggered by AWC olfactory neurons, ASK gustatory neurons, and AIB interneurons while dispersal is promoted


by ASI gustatory neurons and AIY interneurons (Gray et al., 2005). Downstream of AIB and AIY, motor neurons define specific aspects of reversal and turn frequency, amplitude, and directionality. SMD motor neurons define the steep amplitude of omega turns, RIV motor neurons specify the ventral bias of turns that follow a reversal, and SMB motor neurons set the amplitude of sinusoidal movement.


 
 

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RIVL (AB plpaapaaa) development in the embryo.
Dorsal view. Bottom is left side of the embryo. Spheres indicate individual nuclei. Black sphere: ancestors of RIVL; dark grey spheres: apoptotic cells; other cells follow the WA color code (after they acquire specific cell or tissue identities). 0 min is fertilization. Click on the movie for higher resolution rendition (by A. Santella & Z. Bao).

 
 

Click here for larger version
RIVR (AB prpaapaaa) development in the embryo.
Dorsal view. Bottom is left side of the embryo. Spheres indicate individual nuclei. Black sphere: ancestors of RIVR; dark grey spheres: apoptotic cells; other cells follow the WA color code (after they acquire specific cell or tissue identities). 0 min is fertilization. Click on the movie for higher resolution rendition (by A. Santella & Z. Bao).


Last revision: July 15, 2014
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