Changes in Brain GnRH after Olfactory Tract Section in Female Goldfish.

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Two types of GnRH contents, salmon type (sGnRH) and chicken-II type (cGnRH-II) were measured in the brain of goldfish after olfactory tract section in order to characterize the effects of the olfactory tract section on brain GnRH content and to determine an appropriate time for use of the olfactory tract-sectioned fish after the operation. Brain sGnRH contents started to decrease at 7 days after the operation, reached low levels by 14 days, and were decreased up to 56 days afterthe operation. Brain cGnRH-II contents showed no clear changes up to 56 days after the operation. Theresults indicate that it is appropriate to use olfactory tract-sectioned fish 14 days or later after the operation when the influence of GnRH of terminal nerve origin has been removed.
社団法人日本水産学会の論文