When the response is not normal it means that there is dysgenisis of gonads
, vanishing testis syndrome, leydigcell hypoplasia or abnormality in the testosterone synthesis especially 17[beta] hydroxysteroid dehydrogenase deficiency.
Particularly, the condition of having or produce of both male and female gametes by the same gonad
(ovotestis or syngonic) occurs as a process (sexual differentiation), as well as a mode of sexuality (hermaphroditism) over lifespan of the invertebrates (Ghiselin, 1969; Warner, 1975).
californicus often eviscerate internal organs, sometimes including gonads
, and then regrow organs from existing energy stores before spawning.
The increase in the gonad
energy value (Eg) was significantly higher in the treatment than control group (P<0.01).
Regressing and regenerating gonads
were detected in 3 females, which were caught at depths of 86-138 m at distances of 26-58 nmi from the coast.
It is very likely that the determination and consequent differentiation of sturgeon gonads
take place during the first year of life, studies showing gonad
surface differentiation at 4 months for A.
In the gonad
samples, the comparison in the concentrations of HMs among three species of fish where Pb levels ranged from 2.33 ppm to 18.67 ppm; Cd found up to 0.71 ppm and Ni were below the detection level (Table 2).
In our study, monthly variation showed a gradual increase in the autumn, which could be related to the reproductive cycle and maturation of gonads
. In other hand, the peak observed in January (period of sexual rest), and the increase in spring did not match with the gametogenic cycle.
It is postulated to serve a normal function in the testis but could exert oncogenic effects in dysgenetic gonads
of individuals with DSD (17).
of 8-day-old male quail embryo, stage Q35 (P&I) was equivalent to chicken embryo stage 34 Hamburger and Hamilton (H&H) (Hamburger & Hamilton, 1951).
In male and female prawns from both rivers, and independently of the stage of maturation, the muscle and the gonads
were rich in protein, whereas the hepatopancreas had high lipid content.
In the north, however, another sex race hits the transition to four-legged life with gonads
of males or females already in place in about equal proportions.