| the occurrence of two species of entomophthorales (entomophthoromycota), pathogens of sitobion avenae and myzus persicae (hemiptera: aphididae), in tunisia. | the natural occurrence of entomophthoralean fungi pathogenic towards aphids on cereal and potato crops was investigated in the years 2009, 2010, and 2011. infected aphids were sampled in three bioclimatic zones in tunisia (beja, cap bon, and kairouan) and fungal species were determined based on morphological characters such as shape, size, and number of nuclei in the primary conidia. polymerase chain reaction (pcr) on the internal transcribed spacer 1 region (its1) was used to verify morphologic ... | 2013 | 23862158 |