interruptus gonadal weight by
vitellogenesis process.
In the primary
vitellogenesis stage, oil globule oocytes measured 180-185 [micro]m in diameter.
Ovarian stage III showed oocyte development in early
vitellogenesis, indicating maturation from previtellogenesis to
vitellogenesis, with the presence of Pv3 and Vol.
In teleost, apoptosis is important in the selection and recruitment of follicles for
vitellogenesis and in ovarian regression after spawning (Santos et al.
It has been suggested that this species has a biennial cycle with consecutive
vitellogenesis and gestation and with discontinuous ovulation in specimens captured in waters of Australia and the southwest Atlantic Ocean (Lucifora et al., 2002; Bansemer, 2009).
Hence, the cephalothorax and pleon of females were analyzed separately to determine whether they consume lipids, proteins, and glycogen from a specific body part during
vitellogenesis.
We determined egg production by counting subsamples of unfertilized eggs, referable to "gonad stage 3" in Wyllie Echeverria (1987) or "
vitellogenesis" in Love et al.
As mentioned, sex differences in lipid metabolism have already been reported, with laying hens showing an estrogen enhanced hepatic lipogenesis in order to meet the demand for
vitellogenesis (Hermier, 1997).
O ocytes in The ovaries are orange (RGB: 186,
vitellogenesis stages are 109, 74), turgent and bigger predominant: early
vitellogenesis (IGS= 3.4 [+ or -] 1.62).
Vitellogenesis during the ovarian development in freshwater female prawn Macrobrachium rosenbergii (De Man).
On the right, oocytes have increased in size thanks to progression of
vitellogenesis. Note the network of actin fibers (in green) surrounding the egg chamber.
Influence of temperature regime on endocrine parameters and
vitellogenesis during experimental maturation of "European eel" (Anguilla anguilla) females.