vitellogenesis


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Related to vitellogenesis: vitellogenic, Vitellogenin

vi·tel·lo·gen·e·sis

(vī'tel-ō-jen'ĕ-sis, vī'tĕ-lō-),
Formation of the yolk and its accumulation in the yolk sac.
[L. vitellus, yolk, + G. genesis, production]

vitellogenesis

(vīt′l-ō-jĕn′ĭ-sĭs, vĭt′-)
n.
Formation of the yolk of an egg.

vi′tel·lo·ge·net′ic (-jə-nĕt′ĭk), vi′tel·lo·gen′ic (-jĕn′ĭk) adj.

vitellogenesis

[vitel′ōjen′əsis]
Etymology: L, vitellus + Gk, genein, to produce
the formation or production of yolk. vitellogenetic, adj.

vitellogenesis

yolk formation in the liver, transport to ovaries, incorporation into ova.
References in periodicals archive ?
The other category of SS commonly described in natural conditions, reabsorbing in prespawning fish, has not been observed in Argentine hake, indicating that once vitellogenesis begins, most of the oocytes would develop through to the end of maturation.
Moreover, the literature specifies that these two signaling pathways are essential in the vitellogenesis and oocyte maturation (Parthasarathy and Palli, 2011).
Dynamics of de novo vitellogenesis in fish with indeterminate fecundity: an application of oocyte packing density theory to European anchovy, Engraulis enerasicolus.
During vitellogenesis the oocytes develop from primary growth stage to cortical alveolar (CA) which is the early stage of the secondary growth (Figure 2a-b), to progress throughout primary Vtg1 and secondary Vtg2 (partially yolked) (Figure 2c), and tertiary vitellogenesis stages Vtg3 (advanced yolked) (Figure 2d).
Vitellogenesis and oocyte growth in non-mammalian vertebrates", Dev.
Vitellogenesis is the production of yolky eggs in oviparous species, and involves transport of gene products from the liver to the ovary where proteins are deposited in the maturing oocytes.
The vitellogenesis takes place from five days old until eleven days old.
Preimaginal reserves are partially consumed during previtellogenesis (PVG); nectar-feeding adds reserves during the ovarian resting stage (ORS); and later a blood meal triggers vitellogenesis (VG) [96-101].
The main function of the CA is the biosynthesis of juvenile hormone which modulates molt quality (simple or methamorphic) in the larvae and regulates vitellogenesis in the adult insects (Kind el al.
P]) was estimated with the gravimetric method (Bagenal and Braum 1978) using ovaries that exhibited advanced stages of vitellogenesis.
Vitellogenesis as a biomarker for estrogenic contamination of the aquatic environment.