Oogenesis in teleosts: How fish eggs are formed

Esther Lubzens; Graham Young; Julien Bobe; Joan Cerdà

doi:10.1016/j.ygcen.2009.05.022

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Oogenesis in teleosts: How fish eggs are formed

Journal article

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Peer reviewed

Oogenesis in teleosts: How fish eggs are formed

Esther Lubzens, Graham Young, Julien Bobe and Joan Cerdà

General and comparative endocrinology, Vol.165(3), pp.367-389

2010

DOI: https://doi.org/10.1016/j.ygcen.2009.05.022

Handle:

https://hdl.handle.net/2376/104991

PMID: 19505465

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Abstract

Vitellogenesis

Hydration

Primordial germ-cell

Atresia

Endocrine, paracrine and autocrine factors

Ovulation

Oocyte

One of the major objectives of the aquaculture industry is the production of a large number of viable eggs with high survival. Major achievements have been made in recent years in improving protocols for higher efficiency of egg production and viability of progeny. Main gaps remain, however, in understanding the dynamic processes associated with oogenesis, the formation of an egg, from the time that germ cells turn into oogonia, until the release of ova during spawning in teleosts. Recent studies on primordial germ-cells, yolk protein precursors and their processing within the developing oocyte, the deposition of vitamins in eggs, structure and function of egg envelopes and oocyte maturation processes, further reveal the complexity of oogenesis. Moreover, numerous circulating endocrine and locally-acting paracrine and autocrine factors regulate the various stages of oocyte development and maturation. Though it is clear that the major regulators during vitellogenesis and oocyte maturation are the pituitary gonadotropins (LH and FSH) and sex steroids, the picture emerging from recent studies is of complex hormonal cross-talk at all stages between the developing oocyte and its surrounding follicle layers to ensure coordination of the various processes that are involved in the production of a fertilizable egg. In this review we aim at highlighting recent advances on teleost fish oocyte differentiation, maturation and ovulation, including those involved in the degeneration and reabsorption of ovarian follicles (atresia). The role of blood-borne and local ovarian factors in the regulation of the key steps of development reveal new aspects associated with egg formation.

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Title: Oogenesis in teleosts: How fish eggs are formed
Creators: Esther Lubzens - Department of Marine Biology, Israel Oceanographic and Limnological Research, 81080 Haifa, Israel
Graham Young - School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195, USA
Julien Bobe - INRA, UR1037, IFR140, Ouest Genopole, Campus de Beaulieu, F-35000 Rennes, France
Joan Cerdà - Laboratory of Institut de Recerca i Tecnologia Agroalimentàries (IRTA)-Institut de Ciències del Mar, Consejo Superior de Investigaciones Científicas (CSIC), 08003 Barcelona, Spain
Publication Details: General and comparative endocrinology, Vol.165(3), pp.367-389
Academic Unit: UNKNOWN
Publisher: Elsevier Inc
Identifiers: 99900547182601842
Language: English
Resource Type: Journal article