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  • Title: Prolactin level in relation to gonadotrophin concentration during different phases of annual reproductive cycle in the freshwater catfish, Clarias batrachus (Linn.).
    Author: Singh SP, Singh TP.
    Journal: Ann Endocrinol (Paris); 1981; 42(2):159-68. PubMed ID: 7294717.
    Abstract:
    Changes in prolactin content of the pituitary gland and blood serum were studied in relation to the changes in gonadotrophic concentration during the different phases of annual reproductive cycle in Clarias batrachus. Prolactin content showed a cyclic variation. Increasing trend in it potency kept pace with the rising concentration of gonadotrophin in the pituitary gland as well as in the blood. Upward movement in prolactin and gonadotrophin levels started with the onset of gonadal development from the preparatory phase, reached to their maximum concentration during spawning period, there after began to decline to touch their ebb in the postspawning phase of reproductive cycle.
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