Theses and Dissertations at Montana State University (MSU)
Permanent URI for this collectionhttps://scholarworks.montana.edu/handle/1/733
Browse
8 results
Search Results
Item The effect of the Russian wheat aphid on cold-hardiness of acclimating winter wheat seedlings(Montana State University - Bozeman, College of Agriculture, 1991) Storlie, Eric WilliamItem Evaluation of agronomic practices to reduce Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera: Aphididae), damage in wheat(Montana State University - Bozeman, College of Agriculture, 1992) Kammerzell, Kurt JohnItem Genetics of Russian wheat aphid resistance in barley(Montana State University - Bozeman, College of Agriculture, 1993) Nieto Lopez, Rosa MariaItem Chlorophyll degradation in wheat lines elicited by cereal aphid infestation(Montana State University - Bozeman, College of Agriculture, 2003) Wang, TaoItem Overwintering, springtime development and migration of some Aphidae, including Myzus persicae, of northwestern Montana(Montana State University - Bozeman, College of Agriculture, 1978) Aldrich, Daniel FrederickItem Factors influencing the determination of wing formation in the aphid, Rhopalosiphum padi (L.) (Homoptera: Aphidae)(Montana State University - Bozeman, College of Agriculture, 1978) Gaudet, Michelle Diane HardistyItem Aphelinus sp. nr. varipes (Hymenoptera: Aphelinidae) as a potential biological control agent of Russian wheat aphid Diuraphis noxia (Mordvilko) (Homoptera: Aphididae)(Montana State University - Bozeman, College of Agriculture, 1991) Lajeunesse, Sherry E.Item Molecular gut analysis of carabids (Coleoptera: carabidae) using aphid primers(Montana State University - Bozeman, College of Agriculture, 2004) Wallace, Sarah Kate; Chairperson, Graduate Committee: Sue BlodgettCarabid beetles are found in a variety of Montana crops, although their impact on the food web is poorly known. To detect aphidophagy using the polymerase chain reaction (PCR), carabids were fed a single aphid and allowed to digest for increasing time intervals. Aphidspecific PCR primers were used to amplify aphid DNA from carabid beetles. For the laboratory-fed beetles, PCR detection of aphidophagy decreased with longer digestion periods. Further, there were differences among genera in the proportion of fed beetles positive for aphid DNA at the tested digestion intervals. Field surveys of 273 individual carabid beetle gut contents, representing seven genera, found all genera surveyed in Montana cropping systems, except Microlestes and Pasymachus, positive for aphid DNA. Genera positive for aphid DNA were Calosoma, Harpalus, Pterostichus, Amara, Agonum, and Bembidion. The detectability of prey DNA in the context of predator size is discussed.