CHAPMAN, Robert*; JENNY, Matt; SCDNR/MRRI; Medical University of South Carolina/MBES: EcoGenomics: analysis of complex systems Ecogenomics is a convenient descriptor for the application of advanced molecular technologies to studies of organismal responses to environmental challenges in their natural settings. The development of molecular tools to survey changes in the transcript profile of thousands of genes […]

PIRES, A; Dickinson College: Signals Mediating Rapid Loss of Cell Adhesion in Metamorphosis Rapid morphological changes that occur during the abrupt metamorphoses of many taxa involve shedding of larval organs and migrations of populations of retained cells. Both processes require rapid modulation of cell adhesion. Veliger larvae of gastropods shed the larval velum during metamorphosis […]

HEYLAND, Andreas*; MOROZ, Leonid/L; The Whitney Laboratory for Marine Bioscience, Saint Augustine, FL; Department of Neuroscience, University of Florida, FL; The Whitney Laboratory for Marine Bioscience, Saint Augustine, FL; Department of Neuroscience, University of Florida, FL: SEARCH FOR NEURONAL TRANSCRIPTS INVOLVED IN THE METAMORPHIC TRANSITION OF THE SEA HARE APLYSIA CALIFORNICA Metamorphosis among many marine […]

YOUSON, J.H.; University of Toronto at Scarborough: Lamprey metamorphosis and a theory on the evolution of adult life history types Lampreys, as agnathans, have a direct lineage to the most ancient of vertebrates. Although the other extant agnathan, the hagfish, has direct development, all lamprey species have a free-living larva that undergoes a true metamorphosis […]

FLATT, T; Brown University, Providence: Juvenile Hormone as an Effector of Metamorphosis and Life History Transitions Hormones, regulatory signaling molecules that coordinate multiple developmental and physiological processes, commonly play central roles in the coordination of life cycles, both among and within species. Life history transitions, for instance from larva to adult or from a non-reproductive […]

DENVER, Robert/J*; CRESPI, Erica/J; University of Michigan; University of Michigan: Hormones translate environmental information to time amphibian metamorphosis Metamorphic timing in amphibians is highly dependent on environmental conditions. Hormones, in particular those of the neuroendocrine stress axis, play central roles in linking sensory information about the external environment with changes in development and growth. Neuropeptides […]

JACOBS, MW*; DEGNAN, BM; Univ. of Washington; Univ. of Queensland: Delay of Metamorphosis in Solitary Ascidians: Genetics, Morphology, and Ecology Metamorphosis is both an ecological and a developmental genetic transition that an organism undergoes as a normal part of ontogeny. Many organisms have the ability to delay metamorphosis when conditions are unsuitable. This strategy carries […]

EREZYILMAZ, Deniz F*; RIDDIFORD, Lynn M; TRUMAN, James W; University of Washington: An ancestral role for the metamorphosis-determining gene, broad in the direct-developing milkweed bug. Fossil and phylogenetic evidence show that the metamorphosing insects diverged from direct-developing ancestors about 300 million years ago. To better understand the genetic basis of this divergence, we have focused […]

DEGNAN, S.M.*; DEGNAN, B.M.; University of Queensland, Australia; University of Queensland, Australia: The origin of the metazoan biphasic life cycle: new insights from an ancient phylum. The biphasic life cycle, characterised by metamorphosis from a pelagic larva to a benthic adult, is found throughout the Metazoa. So is sexual reproduction via eggs and sperm. Amidst […]

GEORGIOU, C.D.; University of Patras: Sclerotial morphogenesis in fungi is induced by oxidative stress Sclerotium-forming fungi are very important plant pathogens with great biological interest because they can be viewed as models of primitive morphogenesis. They differentiate by asexually producing sclerotia which are usually spherical bodies of aggregated hyphae. In spite of the biological, ecological […]