| Title: | Daphnia response to predation threat involves heat-shock proteins and the actin and tubulin cytoskeleton |
| ISSN/ISBN: | 1526-954X (Print) 1526-954X (Linking) |
| Abstract: | "Of all the environmental pressures that all organisms across all kingdoms must face, one of the greatest is the risk of predation. The unpredictability of predation events from the perspective of a single individual is one of the major components of a changing, unstable environment (Gliwicz and Pijanowska, 1989; Lampert, 1987). The panoply of antipredator defenses among terrestrial and aquatic organisms involves a variety of morphological, behavioral, and life-history adaptations that even if they are not life-saving, may enable organisms to complete reproduction before predation occurs. Most of these phenotypic changes are directly induced by cues associated with the biotic agent, in the case of aquatic organisms, the chemical compounds (kairomones) released by a predator into the water. Herein we show that exposure of Daphnia to invertebrate and vertebrate kairomones results in changes in motion, behavior, and life history and at the molecular level involves changes in heat-shock proteins (HSPs) level and the actin and tubulin cytoskeleton. In addition, some of these effects are transgenerational, i.e., they are passed on from the mother to her offspring" |
| Keywords: | "Actins/metabolism Animals Blotting, Western Cytoskeleton/*drug effects Daphnia/*drug effects/physiology Diptera/metabolism Escape Reaction/*drug effects Fishes/metabolism Heat-Shock Proteins/*metabolism Motor Activity/drug effects Pheromones/metabolism/*p;" |
| Notes: | "MedlinePijanowska, Joanna Kloc, Malgorzata eng Comparative Study Letter Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S. 2004/03/03 Genesis. 2004 Feb; 38(2):81-6. doi: 10.1002/gene.20000" |
