期刊
FISH PHYSIOLOGY AND BIOCHEMISTRY
卷 41, 期 5, 页码 1105-1115出版社
SPRINGER
DOI: 10.1007/s10695-015-0072-7
关键词
Brain; Fish; Hydrostatic pressure; Monoamine; Swimming
资金
- Japan Society for the Promotion of Science [10J02886, 12J02083]
- Grants-in-Aid for Scientific Research [10J02886] Funding Source: KAKEN
Fish are faced with a wide range of hydrostatic pressure (HP) in their natural habitats. Additionally, freshwater fish are occasionally exposed to rapid changes inHPdue to heavy rainfall, flood and/or dam release. Accordingly, variations in HP are one of the most important environmental cues for fish. However, little information is available on how HP information is perceived and transmitted in the central nervous system of fish. The present study examined the effect of HP (water depth of 1.3 m) on the quantities of monoamines and their metabolites in the telencephalon, optic tectum, diencephalon, cerebellum (including partial mesencephalon) and vagal lobe (including medulla oblongata) of the goldfish, Carassius auratus, using high-performance liquid chromatography. HP affected monoamine and metabolite contents in restricted brain regions, including the telencephalon, cerebellum and vagal lobe. In particular, HP significantly increased the levels of dopamine (DA) in the telencephalon at 15 min and that of norepinephrine (NE) in the cerebellum at 30 min. In addition, HP also significantly increased locomotor activity at 15 and 30 min after HP treatment. It is possible that HP indirectly induces locomotion in goldfish via telencephalic DA and cerebellar NE neuronal activity.
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