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Full-Text Articles in Life Sciences
Feeding Preferences Of A Generalist Salt-Marsh Crab: Relative Importance Of Multiple Plant Traits, Steven C. Pennings, Thomas H. Carefoot, Erin L. Siska, Margo E. Chase, Teresa A. Page
Feeding Preferences Of A Generalist Salt-Marsh Crab: Relative Importance Of Multiple Plant Traits, Steven C. Pennings, Thomas H. Carefoot, Erin L. Siska, Margo E. Chase, Teresa A. Page
Ocean Engineering and Marine Sciences Faculty Publications
Few studies have evaluated the relative importance of multiple plant traits to herbivore diet choice, especially with an experimental approach. Moreover, although circumstantial evidence points to plant toughness and silica content as important deter- minents of diet choice, few studies have experimentally demonstrated that these factors actually deter feeding by herbivores. We examined feeding preferences of a generalist salt- marsh crab, Armases cinereum, for all the common angiosperms in its habitat. We took an experimental approach to evaluating the importance of toughness, secondary chemistry, silica, salt, and protein in determining feeding preferences. Consumption of plants by Armases in two experiments …
Effects Of Submergence On Embryonic Survival And Developmental Rate Of The Florida Applesnail, Pomacea Paludosa: Implications For Egg Predation And Marsh Management, Richard L. Turner
Effects Of Submergence On Embryonic Survival And Developmental Rate Of The Florida Applesnail, Pomacea Paludosa: Implications For Egg Predation And Marsh Management, Richard L. Turner
Ocean Engineering and Marine Sciences Faculty Publications
Aerial deposition of egg clutches by the aquatic Florida applesnai! is believed to have evolved in response to aquatic egg predators. Adaptation to aerial conditions might, however. have rendered embryos intolerant of submergence, a potential occurrence in natural and managed marshes, rivers. and lakes. In this study, eggs were submerged in water for various durations in the laboratory to assess their ability to survive flooding; and clutches of known ages were submerged for several days in the field to determine if aquatic predators might decrease survival below levels expected to occur due to flooding alone. Submergence of clutches slowed embryonic …