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Publications

These publications showcase the significant science conducted in our Science Centers.

Filter Total Items: 16731

Sperm-cell ultrastructure of North American sturgeons II: The shortnose sturgeon (Acipenser brevirostrum, Lesueur, 1818) Sperm-cell ultrastructure of North American sturgeons II: The shortnose sturgeon (Acipenser brevirostrum, Lesueur, 1818)

The fine structure of the sperm cell of the shortnose sturgeon (Acipenser brevirostrum) was examined using transmission electron microscopy and selected metrics. The cell possesses a distinct acrosome, a defined head region, a midpiece, and a single flagellum. The mean length of the sperm cell body (acrosome + nucleus + midpiece) is approximately 9.71 µm, and the length of the flagellum...
Authors
M. N. DiLauro, W.S. Kaboord, R.A. Walsch

Changes in haematology during upstream migration to American shad Changes in haematology during upstream migration to American shad

Heart mass of American shad Alosa sapidissima did not change during migration in the Connecticut River. Spleen mass decreased and there was an increase in available blood haemoglobin (+22%) and haematocrit (+9%). The decreases in spleen somatic index (-29%) and spleen haemoglobin content (-15%) were dependent upon distance travelled upriver and not seasonal migration timing or short-term...
Authors
J. B. K. Leonard, S. D. McCormick

Estimating Concentrations of Road-Salt Constituents in Highway-Runoff from Measurements of Specific Conductance Estimating Concentrations of Road-Salt Constituents in Highway-Runoff from Measurements of Specific Conductance

Discrete or composite samples of highway runoff may not adequately represent in-storm water-quality fluctuations because continuous records of water stage, specific conductance, pH, and temperature of the runoff indicate that these properties fluctuate substantially during a storm. Continuous records of water-quality properties can be used to maximize the information obtained about the...
Authors
Gregory E. Granato, Kirk P. Smith
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