vitellogenesis

Then late in the summer when the photoperiod is less than 12.5 hours long, the next clutch of oocytes lose vitellogenesis.

They have no need to risk their lives sucking blood in adulthood, having already accumulated the necessary materials for oogenesis and vitellogenesis.

The two cycles overlap as vitellogenesis (yolk formation) begins while the female is still pregnant.

Yolk production (vitellogenesis) in female ovaries is also stimulated by JH action.

In mosquitoes infected with Plasmodium, vitellogenesis may be manipulated by the parasites to reduce fecundity (Hurd, 2003).

Females at an age of 26 months undergo vitellogenesis as they enter their third hibernation, mate the following spring, and give birth later in September or October.

Oogenesis and formation of yolk (vitellogenesis) of Bathynerita naticoidea was described by Eckelbarger & Young (1997).

Gonad-inhibiting hormone (GIH), also known as vitellogenesis-inhibiting hormone (VIH) because of its role in inhibiting vitellogenesis in female animals.

The gestation period is 5-6 months long with vitellogenesis (yolk formation) occurring at the same time, such as that females can ovulate a new batch of ova and mate again immediately after giving birth.

Females ovulate eggs into the uterus about once every two weeks; vitellogenesis (yolk formation) and the growth of new ovarian eggs halt during pregnancy, apparently due to insufficient space inside the body cavity.

Unlike most sharks, in which vitellogenesis (yolk formation) occurs concurrently with pregnancy, in the angelshark the onset of vitellogenesis is delayed until halfway through the gestation period.