Abstract: Changes in the content of vitellogenin in Locusta migratoria manilensis infected with Nosema locustae were determined by immunology method. The results indicated that vitellogenin did not accomplish in the locust infected, and the contents of vitellogenin in fat body, haemolymph and ovary were very low compared with the control. The maximum content of vitellogenin in fat body in the treatment was 4.663 mg/mL, while the value was 18.655 mg/mL in the control. The maximum content of vitellogenin in haemolymph in the treatment was 2.627 mg/mL, while the value was 7.603 mg/mL in the control. The maximum content of vitellogenin in ovary in the treatment was 4.927 mg/mL while the value was 73.367 mg/mL in the control.

Key words: Locusta migratoria manilensis; Nosema locustae, vitellogenesis, vitellogenin, vitellin