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Full-Text Articles in Life Sciences
Development Of Banded Sunflower Moth (Lepidoptera: Cochylidae) And Sunflower Moth (Lepidoptera: Pyralidae) On Three Diets, Jawahar Jyoti, Gary Brewer
Development Of Banded Sunflower Moth (Lepidoptera: Cochylidae) And Sunflower Moth (Lepidoptera: Pyralidae) On Three Diets, Jawahar Jyoti, Gary Brewer
Gary J. Brewer
A comparative study of the effects of sunflower moth diet, banded sunflower moth diet, and a modified sunflower moth diet was conducted on banded sunflower moth, Cochylis hospes Walsingham, and sunflower moth, Homoeosoma electellum (Hulst). Developmental times and survival to the pupal and adult stages were measured for each diet and pest species. Modified sunflower moth diet with incorporated sunflower leaf tissue gave faster developmental times and a higher percent pupation and adult eclosion for both sunflower moth species than either sunflower moth diet or banded sunflower moth diet. The modified sunflower moth diet that incorporates sunflower leaf tissue provides …
Contact And Fumigant Toxicity Of A Botanical-Based Feeding Deterrent Of The Stable Fly, Stomoxys Calcitrans (Diptera: Muscidae), Junwei Zhu, Andrew Li, Sara Pritchard, Khanobporn Tangtrakulwanich, Frederick Baxendale, Gary Brewer
Contact And Fumigant Toxicity Of A Botanical-Based Feeding Deterrent Of The Stable Fly, Stomoxys Calcitrans (Diptera: Muscidae), Junwei Zhu, Andrew Li, Sara Pritchard, Khanobporn Tangtrakulwanich, Frederick Baxendale, Gary Brewer
Gary J. Brewer
The stable fly, Stomoxys calcitrans (L.), has been considered one of the most serious biting flies of confined and pastured livestock. The economic losses caused by the stable fly to the cattle industry in the United States exceed $2 billion annually. Current practices for managing stable flies using insecticides provide only marginal control. Insecticide resistance has also been recently reported in stable flies. The present study reports the use of plant-based insecticides, for example, essential oils, as alternatives for managing this fly pest. The toxicity of several plant essential oils and selected ingredient compounds was evaluated by contact and fumigant …
Sunflower Resistance To The Red Sunflower Seed Weevil (Coleoptera: Curculionidae), Huihua Gao, Gary Brewer
Sunflower Resistance To The Red Sunflower Seed Weevil (Coleoptera: Curculionidae), Huihua Gao, Gary Brewer
Gary J. Brewer
The red sunflowerseed weevil, Smicronyx fulvus LeConte (Coleoptera: Curculionidae), is a major insect pest of sunflower in North Dakota, South Dakota, and Minnesota. Economic damage is caused by the larvae which are internal seed feeders. During the 1992-1995 growing seasons, sunflower accessions were artificially infested and evaluated for resistance to the red sunflower seed weevil. Accessions 170411, 253417, and 170424 were resistant to the red sunflower seed weevil. Morphological types within accessions170411 and 170424 varied for seed and pollen color and resistance to the red sunflower seed weevil. The resistant variant of accession170424 had 45% of the seed damage of …