Seasonal changes in gonadosomatic index(GSI), ovary and pituitary histology, and serum
concentrations of estradiol-17 ƒÀ(E2) and testosterone(T) were investigated in the captive …

Annual changes in the gonadosomatic index (GSI), oocyte diameter, gonadal histology and
plasma estradiol-17β (E 2) levels were investigated in female common Japanese conger …

Ovarian developmental stages and serum steroid hormone levels were examined at six
different times of day (0100, 0600, 1000, 1300, 1600, 2000 h) in a marine teleost, the …

The postvitellogenic oocytes of daily spawning marine teleosts, tobinumeri-dragonet
Repomucenus beniteguri and kisu Sillago japonica, undergo germinal vesicle …

In order to clarify the spawning pattern of Japaneses sardine (Sardinops melanostictus)
during the spawning period, changes in ovarian histology, frequency distributions of oocyte …

We determined the effective hormonal treatments to induce ovarian maturation and
ovulation in the common Japanese conger, Conger myriaster, using females cultured for 1.5 …

Gonad and blood samples were taken from the captive female Japanese sardine Sardinops
melanostictus between 1988 and 1989, and changes in serum levels of gonadal steroids …

Annual changes in plasma of estradiol-17β, testosterone, and 17, 20β-dihydroxy-4pregnen-
3-one concentrations were measured, by radioimmunoassay, in female gudgeon Gobio …

Several aspects of the endocrine regulation of final oocyte maturation (FOM) and ovulation
in Japanese catfish (Silurus asotus), was investigated. These were:(1) potency of various …

We studied oocyte steroidogenesis in relation to oocyte development in the greenling,
Hexagrammos otakii, a marine multiple spawner. Vitellogenic and mature oocytes were …