Thyroid‐gonad relationship in spotted munia, <i>Uroloncha punctulata</i>

Abstract

Abstract Thyroidectomy of adult Spotted munia ( Uroloncha punctulata ) leads to the gonads remaining permanently in full breeding condition and is responsible for an early increase in testis size and activity in juvenile birds. These effects may be due to (i) general disturbances in metabolism or (ii) continuous secretion of gonadotropic hormones from the hypopyhsis or (iii) to both of these processes.