Cumulative effects of volcanic ash on the food preferences of two Orthopteran species

Inert dusts are an early form of insecticide which is still in use. One of the most common inert dusts is volcanic ash. In order to study the reaction ofrangeland grasshoppers, Dichroplus vittigerum （Acrididae） and a katydid, t]wgilis mendosensis （Phaneropteridae）, to the presence of volcanic ash in...

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