Brain Pathways and Behavioral Responses to Weak Electric Fields in Parasitic Sea Lampreys (Petromyzon marinus )

The authors characterized the behavioral and brain responses of parasitic sea lampreys ( Petromyzon marinus ) to weak electric fields. Lampreys showed preferences for the cathodal end of the testing aquarium after electric stimulation. Within a range of cathodal fields (−0.1 to −30.0 μV/cm), lamprey...

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Bibliographic Details
Published in:Behavioral neuroscience 2004-06, Vol.118 (3), p.611-619
Main Authors: Chung-Davidson, Yu-Wen, Yun, Sang-Seon, Teeter, John, Li, Weiming
Format: Article
Language:English
Subjects:
Agnatha and pisces
Animal
Animal behavior
Animal Ethology
Animals
Behavior, Animal - physiology
Behavior, Animal - radiation effects
Biological and medical sciences
Blotting, Western - methods
Brain
Brain - anatomy & histology
Brain - physiology
Brain - radiation effects
Dose-Response Relationship, Radiation
Electric fields
Electric Stimulation
Electrical Stimulation
Electrodes
Electrophysiology
Fishes
Fundamental and applied biological sciences. Psychology
Immunohistochemistry - methods
Lampreys - physiology
Neural Pathways
Neural Pathways - physiology
Neural Pathways - radiation effects
Neurology
Oncogene Protein p65(gag-jun) - metabolism
Parasites
Petromyzon marinus
Petromyzontidae
Phosphopyruvate Hydratase - metabolism
Proto-Oncogene Proteins c-fos - metabolism
Psychology. Psychoanalysis. Psychiatry
Vertebrata
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Summary:The authors characterized the behavioral and brain responses of parasitic sea lampreys ( Petromyzon marinus ) to weak electric fields. Lampreys showed preferences for the cathodal end of the testing aquarium after electric stimulation. Within a range of cathodal fields (−0.1 to −30.0 μV/cm), lampreys exhibited increased active behaviors. In contrast, anodal fields decreased most active behaviors below baseline. Exposure to electric fields resulted in changes in Western blot patterns for the neuronal activity markers Fos, Fos-B, and Jun in whole-brain homogenate. Electric stimulation also increased Fos-B immunoreactivity in the octavolateral and the habenula-fasciculus retroflexus-interpeduncular systems. These results confirm that the octavolateral system is associated with electroreception and suggest that the habenula-fasciculus retroflexus-interpeduncular system may be part of the electroreceptive network.
ISSN:0735-7044
1939-0084
DOI:10.1037/0735-7044.118.3.611