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Full-Text Articles in Life Sciences
The Role Of Cuticular Pheromones In Courtship Conditioning Of Drosophila Males, Kathleen King Siwicki, Paul Nicholas Riccio , '05, Lisa Ladewski , '02, F. Marcillac, L. Dartevelle, Stephanie Alexis Cross , '04, J.-F. Ferveur
The Role Of Cuticular Pheromones In Courtship Conditioning Of Drosophila Males, Kathleen King Siwicki, Paul Nicholas Riccio , '05, Lisa Ladewski , '02, F. Marcillac, L. Dartevelle, Stephanie Alexis Cross , '04, J.-F. Ferveur
Biology Faculty Works
Courtship conditioning is an associative learning paradigm in Drosophila melanogaster, wherein male courtship behavior is modified by experience with unreceptive, previously mated females. While the training experience with mated females involves multiple sensory and behavioral interactions, we hypothesized that female cuticular hydrocarbons function as a specific chemosensory conditioned stimulus in this learning paradigm. The effects of training with mated females were determined in courtship tests with either wild-type virgin females as courtship targets, or with target flies of different genotypes that express distinct Cuticular hydrocarbon (CH) profiles. Results of tests with female targets that lacked the normal CH profile, and …
Review Of "The Microbial Models Of Molecular Biology: From Genes To Genomes" By R. H. Davis, Amy Cheng Vollmer, S. J. Vollmer
Review Of "The Microbial Models Of Molecular Biology: From Genes To Genomes" By R. H. Davis, Amy Cheng Vollmer, S. J. Vollmer
Biology Faculty Works
No abstract provided.
Fitness Correlates Of Song Repertoire Size In Free-Living Song Sparrows (Melospiza Melodia), J. M. Reid, P. Arcese, A. L. E. V. Cassidy, Sara Hiebert Burch, J. N.M. Smith, P. K. Stoddard, A. B. Marr, L. F. Keller
Fitness Correlates Of Song Repertoire Size In Free-Living Song Sparrows (Melospiza Melodia), J. M. Reid, P. Arcese, A. L. E. V. Cassidy, Sara Hiebert Burch, J. N.M. Smith, P. K. Stoddard, A. B. Marr, L. F. Keller
Biology Faculty Works
Models of sexual selection propose that exaggerated secondary sexual ornaments indicate a male's own fitness and the fitness of his offspring. These hypotheses have rarely been thoroughly tested in free-living individuals because overall fitness, as opposed to fitness components, is difficult to measure. We used 20 years of data from song sparrows ( Melospiza melodia) inhabiting Mandarte Island, British Columbia, Canada, to test whether a male's song repertoire size, a secondary sexual trait, predicted overall measures of male or offspring fitness. Males with larger song repertoires contributed more independent and recruited offspring, and independent and recruited grandoffspring, to Mandarte's population. …
Connecting Branches To Student Activities, Amy Cheng Vollmer
Connecting Branches To Student Activities, Amy Cheng Vollmer
Biology Faculty Works
No abstract provided.
Mechanisms For The Environmental Regulation Of Gene Expression: Ecological Aspects Of Animal Development, Scott F. Gilbert
Mechanisms For The Environmental Regulation Of Gene Expression: Ecological Aspects Of Animal Development, Scott F. Gilbert
Biology Faculty Works
The environment can play a significant role in the production of phenotypes. However, the developmental mechanisms by which the environmental agents effect normal development are Just becoming known. At least three paths have been found through which the environment can modify gene activity. The first is the neuroendocrine route. Here, the nervous system monitors the environment and transfers signals to the endocrine system. The endocrine hormones can then alter gene expression. The second route involves environmental factors that change the methylation pattern of genes, thereby altering their transcriptional capabilities. The third route involves the direct induction of gene expression in …
Gene Expression Maps: The Cartography Of Transcription, Scott F. Gilbert
Gene Expression Maps: The Cartography Of Transcription, Scott F. Gilbert
Biology Faculty Works
No abstract provided.
The Drosophila Lymph Gland As A Developmental Model Of Hematopoiesis, Cory J. Evans
The Drosophila Lymph Gland As A Developmental Model Of Hematopoiesis, Cory J. Evans
Biology Faculty Works
Drosophila hematopoiesis occurs in a specialized organ called the lymph gland. In this systematic analysis of lymph gland structure and gene expression, we define the developmental steps in the maturation of blood cells (hemocytes) from their precursors. In particular, distinct zones of hemocyte maturation, signaling and proliferation in the lymph gland during hematopoietic progression are described. Different stages of hemocyte development have been classified according to marker expression and placed within developmental niches: a medullary zone for quiescent prohemocytes, a cortical zone for maturing hemocytes and a zone called the posterior signaling center for specialized signaling hemocytes. This establishes a …
Transgenic Mouse Model Of Tau Pathology In Astrocytes Leading To Nervous System Degeneration, Deepa V. Dabir
Transgenic Mouse Model Of Tau Pathology In Astrocytes Leading To Nervous System Degeneration, Deepa V. Dabir
Biology Faculty Works
Filamentous tau inclusions in neurons and glia are neuropathological hallmarks of sporadic and familial tauopathies. Because tau gene mutations are pathogenic for the autosomal dominant tauopathy "frontotemporal dementia and parkinsonism linked to chromosome 17," tau abnormalities are implicated directly in the onset and/or progression of disease. Although filamentous tau aggregates are acknowledged to play roles in degenerative mechanisms resulting in neuron loss, the contributions of glial tau pathology to neurodegeneration remain essentially unexplored. To begin to elucidate the role of glial pathology in tauopathies, we generated a transgenic (Tg) mouse model of astrocytic tau pathology by expressing the human tau …