The Mormon cricket (MC),Anabrus simplex (Orthoptera:Tettigoniidae),has a long and negative history with agriculture in the western states of the USA where MC often migrates in large groups and causes significant damag...The Mormon cricket (MC),Anabrus simplex (Orthoptera:Tettigoniidae),has a long and negative history with agriculture in the western states of the USA where MC often migrates in large groups and causes significant damage to forage plants and cultivated crops.In this review, virulence to MC of isolates of the insect-pathogenic fungus Metarhizium anisopliae varieties acridum and anisopliae were compared in an effort to identify isolates with promise for use as MC biological control agents.All of the isolates tested induced 100% or nearly 100% mortality by six days post application of the fungal conidia.Searches for new Metarhizium isolates with high heat and UV-B tolerance included isolation fungi from field-caught MC and grasshopper after they died in the laboratory and culturing fungi from soil samples collected from numerous western USA sites.The survey was preceded by development of a dodine based selective medium that,at 0.002% active ingredient,permitted growth of M.anisopliae var.acridum,but inhibited most contaminating fungi.The M.anisopliae var.acridum isolates examined to date have much higher tolerance to heat and UV-B irradiation than M.anisopliae var.anisopliae isolates,and this may be critical to successful field applications.The variety acridum has not yet been found in the USA,so our search for such isolates continues.Several new M.anisopliae var.anisopliae and Beauveria spp.were found,and the Metarhizium isolates are being characterized as to stress tolerance and virulence to insects.Characterization includes comparisons of new and pre-existing Metarhizium isolates by amplified fragment-length polymorphism (AFLP) analysis.Finally, experiments on MC developmental biology were conducted to gather data needed to develop a degree day model and to establish laboratory colonies of MC.展开更多
摩门教(Church of Jesus Christ of Latter-Day Saints．LDS是其缩写形式，可意译为“耶稣基督后期圣徒教会”或称Mormonism)是近年来发展最快的基督教新宗派之一。它以其信仰、神学、组织、礼仪的独特性被视为基督教的边缘派别。摩门...摩门教(Church of Jesus Christ of Latter-Day Saints．LDS是其缩写形式，可意译为“耶稣基督后期圣徒教会”或称Mormonism)是近年来发展最快的基督教新宗派之一。它以其信仰、神学、组织、礼仪的独特性被视为基督教的边缘派别。摩门教现已拥有770万的信众，遍布世界各地，中国地区有摩门教徒4万人。其中大陆有1万人。从其内部经过改组的RLDS教会，许多书里把它视为摩门教的一支。但RLDS教会却一直声称他们不是摩门教。展开更多
文摘The Mormon cricket (MC),Anabrus simplex (Orthoptera:Tettigoniidae),has a long and negative history with agriculture in the western states of the USA where MC often migrates in large groups and causes significant damage to forage plants and cultivated crops.In this review, virulence to MC of isolates of the insect-pathogenic fungus Metarhizium anisopliae varieties acridum and anisopliae were compared in an effort to identify isolates with promise for use as MC biological control agents.All of the isolates tested induced 100% or nearly 100% mortality by six days post application of the fungal conidia.Searches for new Metarhizium isolates with high heat and UV-B tolerance included isolation fungi from field-caught MC and grasshopper after they died in the laboratory and culturing fungi from soil samples collected from numerous western USA sites.The survey was preceded by development of a dodine based selective medium that,at 0.002% active ingredient,permitted growth of M.anisopliae var.acridum,but inhibited most contaminating fungi.The M.anisopliae var.acridum isolates examined to date have much higher tolerance to heat and UV-B irradiation than M.anisopliae var.anisopliae isolates,and this may be critical to successful field applications.The variety acridum has not yet been found in the USA,so our search for such isolates continues.Several new M.anisopliae var.anisopliae and Beauveria spp.were found,and the Metarhizium isolates are being characterized as to stress tolerance and virulence to insects.Characterization includes comparisons of new and pre-existing Metarhizium isolates by amplified fragment-length polymorphism (AFLP) analysis.Finally, experiments on MC developmental biology were conducted to gather data needed to develop a degree day model and to establish laboratory colonies of MC.
文摘摩门教(Church of Jesus Christ of Latter-Day Saints．LDS是其缩写形式，可意译为“耶稣基督后期圣徒教会”或称Mormonism)是近年来发展最快的基督教新宗派之一。它以其信仰、神学、组织、礼仪的独特性被视为基督教的边缘派别。摩门教现已拥有770万的信众，遍布世界各地，中国地区有摩门教徒4万人。其中大陆有1万人。从其内部经过改组的RLDS教会，许多书里把它视为摩门教的一支。但RLDS教会却一直声称他们不是摩门教。
