时间：2016年11月2日 星期三 上午10：00
报告专家：Prof. F. Joseph Margraf 美国水产学会主席 阿拉斯加大学费尔班克斯分校
报告题目：Using electronics to measure fat content of fish
F. Joseph Margraf is a fish biologist and current President of American Fisheries Society, and Professor of School of Fisheries and Ocean Sciences, University of Alaska Fairbanks. He received a BS in fisheries science from Cornell University (1970) and an MS in fisheries science from the Texas A&M University (1977). Joseph worked for LGL Ecological Research Associates, TX (1977-1980), the Maryland, West Virginia, and Ohio Cooperative Fish and Wildlife Research Units (1980-1999), and Alaska Cooperative Fish and Wildlife Research Unit and School of Fisheries and Ocean Sciences and Institute of Arctic Biology, University of Alaska Fairbanks (1999-2009). Then he joined U.S. Geological Survey and Western Cooperative Research Units and served as president of American Fisheries Society (2009-present). Joseph has long been involved in research of using bioenergetic model and bioelectrical impedance analysis to assess fish condition. He has published over 100 total publications and major project reports since 1972.
Bioelectrical Impedance Analysis (BIA) is commonly used in human health and nutrition assessment, but has only recently been considered a potential tool for fish. Once calibrated, BIA estimates fat levels without the need to kill the fish. Despite the promise held by BIA, published studies have been divided on whether it provides accurate estimates of body composition in fish. In cases where BIA was not successful, calibration attempts lacked the range of fat levels or sample sizes needed for success (range of dry fat levels of 29%, n=60 yielding an R2 of 0.8).
Hartman, K.J., and F.J. Margraf, A.W. Hafs, and M.K. Cox. 2015. Bioelectrical Impedance Analysis: A New Tool for Assessing Fish Condition. Fisheries. 40: 590-600.
Overton, A.S., J.C. Griffin, F.J. Margraf, E.B. May, and K.J Hartman. 2015. Chronicling long-term predator responses to a shifting forage base in Chesapeake Bay: An energetics approach. Transactions of the American Fisheries Society. 144: 956-966.
Stolarski, J.T, F.J. Margraf, J.G. Carlson, and T.M. Sutton. 2014. Lipid and moisture content modeling of amphidromous Dolly Varden Char using Bioelectrical Impedance Analysis. North American Journal of Fisheries Management. 34: 471-481.
Wirth, L., A. Rosenberger, A. Prakash, J. Margraf, and T. Hamazaki. 2012. A remote sensing/GIS-based approach to identify and model spawning habitat for fall chum salmon in a sub-arctic, glacially-fed river. Transactions of the American Fisheries Society 141:1349-1363.