Effect of some growth factors on Cyprinus carpio oocytes maturation (in vitro study)

Abstract

Cyprinus carpio L., one of the most significant fish species in fish farming, is common and widespread in ponds, lakes, and rivers in central Asia and Europe (Bakos &Gorda, 2001).Fish oogenesis is classified into three stages: previtellogenesis, vitellogenesis, and oocyte maturation. Studies have been conducted dwelling with the two latter stages in addition to the controlling involvement of the hypothalamopituitary-gonadal axis (Nagahama, et al. ,1995). Oocyte maturation in teleost (like other vertebrates) occures before ovulation including germinal vesicle migration and breakdown, chromosome condensation and formation of the first polar body (Patiño & Sullivan, 2002; Nagahama & Yamashita, 2008).