NDLI: Sorting food from stones: the vagal taste system in Goldfish, Carassius auratus

Content Provider	Springer Nature Link
Author	Finger, Thomas E.
Copyright Year	2007
Abstract	The sense of taste, although a relatively undistinguished sensory modality in most mammals, is a highly developed sense in many fishes, e.g., catfish, gadids, and carps including goldfish. In these species, the amount of neural tissue devoted to this modality may approach 20% of the entire brain mass, reflecting an enormous number of taste buds scattered across the external surface of the animal as well as within the oral cavity. The primary sensory nuclei for taste form a longitudinal column of nuclei along the dorsomedial surface of the medulla. Within this column of gustatory nuclei, the sensory system is represented as a fine-grain somatotopic map, with external body parts being represented rostrally within the column, and oropharyngeal surfaces being represented caudally. Goldfish have a specialization of the oral cavity, the palatal organ, which enables them to sort food particles from particulate substrate material such as gravel. The palatal organ taste information reaches the large, vagal lobe with a complex laminar and columnar organization. This lobe also supports a radially-organized reflex system which activates the musculature of the palatal organ to effect the sorting operation. The stereotyped, laminated structure of this system in goldfish has facilitated studies of the circuitry and neurotransmitter systems underlying the goldfish’s ability to sort food from stones.
Starting Page	135
Ending Page	143
Page Count	9
File Format	PDF
ISSN	03407594
Journal	Journal of Comparative Physiology A
Volume Number	194
Issue Number	2
e-ISSN	14321351
Language	English
Publisher	Springer-Verlag
Publisher Date	2008-01-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Palatal organ Vagal lobe Nucleus solitary tract Nucleus ambiguus Ingestion Zoology Neurosciences Animal Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Behavioral Neuroscience Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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Sorting Food from Stones: The Vagal Taste System in Goldfish, Carassius auratus

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Sorting food from stones: the vagal taste system in Goldfish, Carassius auratus

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Sorting Food from Stones: The Vagal Taste System in Goldfish, Carassius auratus

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