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The Oxyporinae (Coleoptera: Staphylinidae) Of Illinois, Rodney S. Hanley
The Oxyporinae (Coleoptera: Staphylinidae) Of Illinois, Rodney S. Hanley
Masters Theses
The monogeneric subfamily Oxyporinae (Coleoptera: Staphylinidae) is composed of the genus Oxyporus Fabricius. Members of the genus are obligate inhabitants of higher, fleshy mushrooms. The Illinois fauna of Oxyporus includes nine species from two subgenera which are treated in this study. A key to the identification of adults, descriptions, fungal host lists, and distributional maps are provided for each species. The most commonly collected species in Illinois are O. occipitalis, O. stygicus, O. major, and O. vittatus; uncommon or rare species are O. lateralis, O. quinquemaculatus (a new record for Illinois), O. femoralis femoralis, …
The Relationship Between Lifespan And Reproduction In The Giant Waterbug (Belostoma Flumineum), Wendy Nixdorf
The Relationship Between Lifespan And Reproduction In The Giant Waterbug (Belostoma Flumineum), Wendy Nixdorf
Masters Theses
The evolutionary significance of senescence and death is poorly understood. Life history theory suggests that the allocation of energy to growth or reproduction is necessarily associated with a decrease in energy available for maintenance of the soma. This study attempted to determine if an investment in reproduction would decrease longevity in the giant waterbug (Belostoma flumineum). Male and female waterbugs were collected from the field as last instar stage nymphs and maintained under controlled laboratory conditions. Individuals were randomly assigned to mating effort treatments, (virgins or breeders with breeding efforts ranging from 1 to >5 times). Following breeding, …