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Full-Text Articles in Life Sciences
Florida Red Tides From A Scientific And Public Information Perspective, Kristen M. Kusek
Florida Red Tides From A Scientific And Public Information Perspective, Kristen M. Kusek
USF Tampa Graduate Theses and Dissertations
This thesis consists of a comprehensive historical review and evaluation of Florida red tide research and a multifaceted analysis of red tide coverage by the St. Petersburg Times from 1953 to 1997. Red tides caused by Gymnodinium breve along the Florida Gulf coast are riddled with complexity; scientists have been asking many of the same questions for nearly 50 years. Red tides also attract considerable media publicity. This thesis addressed the following: 1. What have scientists learned about Florida red tides since G. breve was identified in 1948?, and 2. How well was the issue covered by the newspaper media? …
Host Plant Alters The Shape Of The Functional Response Of An Aphid Predator (Coleoptera: Coccinellidae), Frank J. Messina, J. B. Hanks
Host Plant Alters The Shape Of The Functional Response Of An Aphid Predator (Coleoptera: Coccinellidae), Frank J. Messina, J. B. Hanks
Biology Faculty Publications
The response of the lady beetle Propylea quatuordecimpunctata (L.) to the density of the Russian wheat aphid, Diuraphis noxia (Mordvilko), was measured in petri dish arenas as well as on plants with divergent leaf architectures. Logistic regression was used to distinguish the shape of the functional response (type II or III), and nonlinear least-squares regression was used to estimate attack coefficients (a) and handling times (Th). In dishes, the behavior of both beetle larvae and adults closely conformed to a type II response. Estimates of a and Th on whole plants were considerably different from those obtained from dishes, and …