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Thirst interneurons that promote water seeking and limit feeding behavior in Drosophila
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Thirst is a motivational state that drives behaviors to obtain water for fluid homeostasis. We identified two types of central brain interneurons that regulate thirsty water seeking in
Drosophila
, that we term the Janu neurons. Janu-GABA, a local interneuron in the subesophageal zone, is activated by water deprivation and is specific to thirsty seeking. Janu-AstA projects from the subesophageal zone to the superior medial protocerebrum, a higher order processing area. Janu-AstA signals with the neuropeptide Allatostatin A to promote water seeking and to inhibit feeding behavior. NPF (
Drosophila
NPY) neurons are postsynaptic to Janu-AstA for water seeking and feeding through the AstA-R2 galanin-like receptor. NPF neurons use NPF to regulate thirst and hunger behaviors. Flies choose Janu neuron activation, suggesting that thirsty seeking up a humidity gradient is rewarding. These findings identify novel central brain circuit elements that coordinate internal state drives to selectively control motivated seeking behavior.
Title: Thirst interneurons that promote water seeking and limit feeding behavior in Drosophila
Description:
Thirst is a motivational state that drives behaviors to obtain water for fluid homeostasis.
We identified two types of central brain interneurons that regulate thirsty water seeking in
Drosophila
, that we term the Janu neurons.
Janu-GABA, a local interneuron in the subesophageal zone, is activated by water deprivation and is specific to thirsty seeking.
Janu-AstA projects from the subesophageal zone to the superior medial protocerebrum, a higher order processing area.
Janu-AstA signals with the neuropeptide Allatostatin A to promote water seeking and to inhibit feeding behavior.
NPF (
Drosophila
NPY) neurons are postsynaptic to Janu-AstA for water seeking and feeding through the AstA-R2 galanin-like receptor.
NPF neurons use NPF to regulate thirst and hunger behaviors.
Flies choose Janu neuron activation, suggesting that thirsty seeking up a humidity gradient is rewarding.
These findings identify novel central brain circuit elements that coordinate internal state drives to selectively control motivated seeking behavior.
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