The effect of culture media,temperature and humidity on the mycelium growth,spores germination of Metarhizium MS01 strain,a high virulent strain from the soil and the pathogenicity against Anoplophora glabripennis lar...The effect of culture media,temperature and humidity on the mycelium growth,spores germination of Metarhizium MS01 strain,a high virulent strain from the soil and the pathogenicity against Anoplophora glabripennis larvae was tested. The result showed that the optimum culture medium was PPDA,the optimum temperature for the mycelium growth and spore germination was 26 ℃,and A. glabripennis larvae had the highest mortality from the fungus at this temperature. The optimum RH for the mycelium growth ranged from 95%to 100%. The speed and rate of spore germination increased with increasing of RH. The larvae died from the fugus most quickly and the mortality reached the highest under 100% RH.展开更多
The parasitism of Orgyia ericae,which causes damage to Ammopiptanthus mongolcus,Heclysarum mongolicum,Hedysarum scoparium and Caragana korshinskii was investigated in Hangjin Qi and Etuoke Qi of Erdosi in Inner Mongol...The parasitism of Orgyia ericae,which causes damage to Ammopiptanthus mongolcus,Heclysarum mongolicum,Hedysarum scoparium and Caragana korshinskii was investigated in Hangjin Qi and Etuoke Qi of Erdosi in Inner Mongolia.The results showed that 8 insect species of the natural enemy were found to parasitize the O.ericae,including Tetrastichus sp.at egg stage,Pimpla disparis、Itoplectis viduata and Aprostocetus sp.at pupa stage,Monodontomerus minor and Aprostocetus sp.at larva-pupa stage,Exorista larvarum and one species of Apanteles spp.at larva stage.Among them the ichneumon flies and chalcids were found sometimes to parasitically co-live in a pupa.There was significant difference in parasitism rate on H.mongolicum between the two regions in the same stage,and was also significant difference over the different stage in the same regions and hosts.展开更多
文摘The effect of culture media,temperature and humidity on the mycelium growth,spores germination of Metarhizium MS01 strain,a high virulent strain from the soil and the pathogenicity against Anoplophora glabripennis larvae was tested. The result showed that the optimum culture medium was PPDA,the optimum temperature for the mycelium growth and spore germination was 26 ℃,and A. glabripennis larvae had the highest mortality from the fungus at this temperature. The optimum RH for the mycelium growth ranged from 95%to 100%. The speed and rate of spore germination increased with increasing of RH. The larvae died from the fugus most quickly and the mortality reached the highest under 100% RH.
文摘The parasitism of Orgyia ericae,which causes damage to Ammopiptanthus mongolcus,Heclysarum mongolicum,Hedysarum scoparium and Caragana korshinskii was investigated in Hangjin Qi and Etuoke Qi of Erdosi in Inner Mongolia.The results showed that 8 insect species of the natural enemy were found to parasitize the O.ericae,including Tetrastichus sp.at egg stage,Pimpla disparis、Itoplectis viduata and Aprostocetus sp.at pupa stage,Monodontomerus minor and Aprostocetus sp.at larva-pupa stage,Exorista larvarum and one species of Apanteles spp.at larva stage.Among them the ichneumon flies and chalcids were found sometimes to parasitically co-live in a pupa.There was significant difference in parasitism rate on H.mongolicum between the two regions in the same stage,and was also significant difference over the different stage in the same regions and hosts.
