Abstract:
:Vertebrate eggs are surrounded by an extracellular glycoprotein coat termed zona pellucida (ZP). Integrity of ZP is critical for a correct embryo development. Two zona pellucida protein genes (zpb and zpc) from European eel were characterized, specific qPCR assays developed and their expression in immature males and females carried out. An experimental group of silver-stage eel females was maintained at 18 °C and hormonally induced to sexual maturation by weekly injections of carp pituitary extract during 12 weeks. Changes in zpb and zpc expression during sexual maturation were studied in liver and ovary by qPCR. In liver, no changes were recorded during hormonal treatment, while in ovary expression of both genes decreased during sexual development. These results are a first step in the characterization of ZP in European eel and in the understanding of the mechanism underlying egg envelope formation.
journal_name
Gen Comp Endocrinoljournal_title
General and comparative endocrinologyauthors
Mazzeo I,Peñaranda DS,Gallego V,Hildahl J,Nourizadeh-Lillabadi R,Asturiano JF,Pérez L,Weltzien FAdoi
10.1016/j.ygcen.2012.06.003subject
Has Abstractpub_date
2012-09-01 00:00:00pages
338-46issue
2eissn
0016-6480issn
1095-6840pii
S0016-6480(12)00236-5journal_volume
178pub_type
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