BAER, C.F.; FULLER, R.C.; TRAVIS, J.*; University of Florida; Florida State University; Florida State University: When and How Selection Experiments Might Actually Be Useful Selection experiments have traditionally been motivated by a desire to understand either (1) the traits underlying fitness in a given environment or (2) the genetic architecture of a trait (or traits). […]

FOLK, D.G.; BRADLEY, T.J.; Univ. of California, Irvine; Univ. of California, Irvine: Water Balance and Ion Regulation in Drosophila melanogaster Selected For Enhanced Desiccation Resistance A formidable and ubiquitous threat to terrestrial animals is that of desiccation. To study the strategies accessible to insects in resisting this threat and maintaining water balance, five populations of […]

DAVIDOWITZ, G.*; ROFF, D.A.; NIJHOUT, H.F.; Univ. of Arizona; Univ. of California, Riverside; Duke Univ.: The physiological regulation of the response to simultaneous selection on body size and development time in Manduca sexta Selection experiments on physiological traits can provide important, yet under-appreciated insight into the mechanisms by which traits and organisms respond to selection. […]

ROSE, Michael R.; CHIPPINDALE, Adam K.; PHELAN, John P.; ARCHER, Margaret A.; BRADLEY, Timothy J.; University of California, Irvine; Queen’s University, Canada; University of California, Los Angeles; University of California, Irvine; University of California, Irvine: The Devil and the Evolutionary Physiology of Life-History in Drosophila Laboratory evolution has been used to reveal the physiological foundations […]

REZNICK, David N.; GHALAMBOR, Cameron K.; Univ. of California, Riverside ; Colorado State: Selection in Nature: Experimental Manipulations of Natural Populations Numerous studies have documented evolution by natural selection in natural populations,but few are genuine selection experiments that are designed and then executed in nature. We will focus on these few cases to illustrate what […]

RIEHLE, Michelle M; BENNETT, Albert F; LONG, Anthony D; Univ of California, Irvine and Univ. of Minnesota; Univ. of California, Irvine; Univ. of California, Irvine: Differential Patterns of Gene Expression and Gene Complement in Laboratory-Evolved Lines of E. coli Combining laboratory natural selection and genomics with comparative physiology creates a powerful tool for understanding organismal […]

WILKINSON, Gerald S.; AMITIN, Emily G.; JOHNS, Philip M.; Univ. of Maryland, College Park: Correlated responses to long-term artificial sexual selection in stalk-eyed flies Coevolutionary models of sexual selection by female choice predict that an ornamental trait in males should become genetically correlated with female preferences for that trait. This prediction motivated a long-term artificial […]

�VERLI, �; POTTINGER, TG; WINBERG, S; University of Oslo, Oslo, Norway; National Environmental Research Council, Windermere, UK; Uppsala University, Uppsala, Sweden: Behavioral and Neuroendocrine Correlates of Artificial Selection for Stress Responsiveness in Rainbow Trout In rainbow trout the magnitude of the cortisol response to stress shows both consistency over time and a moderate to high […]

CALLAHAN, HS; PIGLIUCCI, M; KURASHIGE, NS; Barnard College, Columbia University; University of Tennessee; Barnard College: Artificial Correlational Selection in Arabidopsis thaliana: What Else Changes When Shade-Avoidance Responses Are Altered In many plants, the timing of flowering responds sensitively to seasonal environmental variation, including changes in photoperiod or shifts in light quality, particularly shifts in the […]

ZERA, Anthony J.; University of Nebraska: Artifical selection on juvenile hormone esterase activity: Insights into the microevolution of endocrine regulation Although considerable information is available on the physiology and biochemistry of hormonal regulation, little is known about the microevolution of endocrine regulatory mechanisms. A key step in understanding endocrine microevolution is documenting the existence, characteristics, […]