title: Estrogen-induced yolk precursors in European sea bass, Dicentrarchus labrax: Status and perspectives on multiplicity and functioning of vitellogenins.
abstract: The estrogen-inducible egg yolk precursor, vitellogenin, of the European sea bass (Dicentrarchus labrax) has received considerable scientific attention by virtue of its central importance in determination of oocyte growth and egg quality in this important aquaculture species. However, the multiplicity of vitellogenins in the sea bass has only recently been examined. Recent cloning and homology analyses have revealed that the sea bass possesses the three forms of vitellogenin, VtgAa, VtgAb and VtgC, reported to occur in some other highly evolved teleosts. Progress has been made in assessing the relative abundance and special structural features of the three Vtgs and their likely roles in oocyte maturation and embryonic nutrition. This report discusses these findings in the context of our prior knowledge of vitellogenesis in this species and of the latest advances in our understanding of the evolution and function of multiple Vtgs in acanthomorph fishes.
authors: Akdeniz University, Fisheries Faculty, Antalya 07070, Turkey; National Institute of Agrinomic Research, Campus de Beaulieu, 35000 Rennes Cedex, France(1). Electronic address: ozlem.yilmaz@rennes.inra.fr.
authors: Ozlem
authors: O
authors: Yilmaz
authors: Instituto de Acuicultura de Torre de la Sal (CSIC), 12595 Castellón, Spain; Instituto de Ciencias Marinas de Andalucía (CSIC), 11510 Cádiz, Spain(1).
authors: Francisco
authors: F
authors: Prat
authors: Instituto de Acuicultura de Torre de la Sal (CSIC), 12595 Castellón, Spain; Electron and Confocal Microscopy Service, University of Valencia, 46100 Valencia, Spain(1).
authors: Antonio José
authors: AJ
authors: Ibañez
authors: School of Marine Biosciences, Kitasato University, 1-15-1 Kitasato, Minami, Sagamihara, Kanagawa 252-0373, Japan.
authors: Haruna
authors: H
authors: Amano
authors: Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey.
authors: Sadi
authors: S
authors: Koksoy
authors: Department of Biology, North Carolina State University, Raleigh, NC 27695-7617, USA; Carolina AquaGyn, P.O. Box 12914, Raleigh, NC 27605, USA(1).
authors: Craig V
authors: CV
authors: Sullivan
mesh_terms: D000818:Animals; D001492:Bass / Q000378:metabolism*; D004530:Egg Yolk / Q000187:drug effects / Q000378:metabolism*; D004967:Estrogens / Q000494:pharmacology*; D008958:Models, Molecular; D014818:Vitellogenesis / Q000187:drug effects; D014819:Vitellogenins / Q000737:chemistry / Q000378:metabolism*
chemical_list: D004967:Estrogens; D014819:Vitellogenins
keywords: Lipoprotein; Oocyte; Reproduction; Teleost; Vitellogenin; Yolk