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

作     者：Valeria Fern&ndez-Arhex Maria E. Amadio Octavio A. Bruzzone 

作者机构：Instituto Nacional de Tecnologia Agropecuaria Estacion Experimental Agropecuaria-Bariloche CC277 A v Modesta Victoria 4450 (8400) San Carlos de Bariloche Argentina Lab ECO TONO-INIBIOMA Pie. Gutierrez 850 San Carlos de Bariloche Rio Negro Argentina Centro Cientifico Tecnologico - Consejo Nacional de Investigaciones Cientificas y Tocnicas (CCT-CONICET) Patagonia Norte. Av. de los Pioneros 2350 San Carlos de Bariloche Rio Negro Argentina 

出 版 物：《Insect Science》 (昆虫科学（英文版）)

年 卷 期：2017年第24卷第4期

页      面：640-646页

核心收录：

学科分类：0710[理学-生物学] 0832[工学-食品科学与工程（可授工学、农学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 09[农学] 0904[农学-植物保护] 083202[工学-粮食、油脂及植物蛋白工程] 0901[农学-作物学] 0713[理学-生态学] 

基　　金：financed by grants PIP PICT Bicentenario PROEVO (Programa de Emergencia Volcanica) 

主　　题：Burgilis mendosensis Dichroplus vittigerum inert dust preference test thurstone scale 

摘      要：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 their food sources and how this reaction changed as a function of time, we conducted paired preference tests between clean leaves of their pre- ferred host plant and leaves exposed to volcanic ash of different grain size. The behavioral response was measured as the rating on the Thurstonian preference scale of leaves with ash in relation to clean leaves. The results showed that the avoidance of volcanic ash increased as a function of time in both species. Both species studied are occasionally exposed to vol- canic activity, and come from an area in which a volcanic eruption had recently occurred. As their populations did not decrease after the ash fall, we propose that some behavioral responses such as avoidance of places with ash, works as tolerance mechanism to inert dusts exposure.