Histological structure of CS and serum calcium level during different stages of reproductive cycle in the freshwater fish Notopterus notopterus

Pruthvi raj C.Bedjargi; R.S.Kulkarni

Volume : IV, Issue : IV, April - 2014

Histological structure of CS and serum calcium level during different stages of reproductive cycle in the freshwater fish Notopterus notopterus

Pruthvi Raj C. Bedjargi, R. S. Kulkarni

Abstract :

The histological structure of CS and serum calcium level during different stages of reproductive cycle in the freshwater fish Notopterus notopterus is being investigated and presented. In addition the changes in the histology of gonads (ovariyan cycle and testicular cycle) during different months of one year period has been studied and correlated with CS. The observation on the serum calcium level during four phases of the reproductive cycle in the fish, Notopterus notopterus indicates that the serum calcium level increases on approach to gonadal growth i.e., during preparatory and prespawning phases and decreases after spawning i.e., during post–spawning. This study indicates that the increase in serum calcium during eeding phase may be because of necessity of calcium for gonadal growth particularly for vitellogenesis. The increase in serum calcium during eeding phase mainly a result of the high protein bond calcium content in the fish, N. notopterus as reported in other studies on fishes.