黑胸大蠊浓核病毒(Pf DNV)的回感试验

BACK INFECTION EXPERIMENT WITH THE PERIPLANETA FULIGINOSA DENSOVIRUS

根据koch′s假说对黑胸大蠊浓核病毒(P_fDNV)进行回感试验,结果表明:从自然死亡的黑胸大蠊中分离的DNV,回感健康的黑胸大蠊,可引起同样的病症,并从中重新分离到完全一样的DNV,说明DNV是黑胸大蠊若虫的致死病原体.该病毒的回感力极强,LT_(50)为39天,最终死亡率达99%以上,是防治黑胸大蠊的一种高毒力的病原体.

We made a back infection experiment with the periplaneta fuligi-nosa densovirus according to Koch's hypothesis. The results showed when the densoviruscs (DNV) separated from the periplaneta fuliginosa which had died naturally were infected back into healthy periplaneta fuliginosa, they could result in the same disease symptoms and we could separate anew the same DNV from the dead healthy periplaneta fuliginosa This illustrated the DNV is the deadly pathogen of periplaneta fuliginosa .The buck infection nowor of the virus was very strong LT5 was 39days, the final percentage of death could reach more than 99%. The virus is a pathogen of high toxicity for preventing and curing the periplaneta fuliginosa.