魚の生体外排卵に関する生物学的研究-5-濾胞組織を取り除かれたメダカ卵巣卵の生体外排卵について〔英文〕
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概要
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This study was carried out to know whether ovulation can be induced in Oryzias oocytes removed from their follicles prior to exposure to a hormone. Removal of the follicles with EDTA or trypsin completely inhibited the response of the oocytes to the hormones such as gonadotropin and hydrocortisone. With EDTA treatment at 5.00 pm the pore canals of the chorion became opened and all the afolliculated oocytes degenerated for incubation. The follicular tissues may have the action of protecting the oocytes. The afolliculated oocytes at 12.00 pm (near ovulation) were induced to ovulate. These results suggest that the follicular envelope is indispensable for both hormonal action and protection until the time of near ovulation.
- 日本水産學會の論文