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Survival and Cause-Specific Mortality of Adult Female Mottled Ducks in East-Central Florida

2006; Wiley; Volume: 34; Issue: 2 Linguagem: Inglês

10.2193/0091-7648(2006)34[388

1938-5463

Ronald R. Bielefeld, Robert R. Cox,

Bird parasitology and diseases

Wildlife Society BulletinVolume 34, Issue 2 p. 388-394 Survival and Cause-Specific Mortality of Adult Female Mottled Ducks in East-Central Florida RONALD R. BIELEFELD, RONALD R. BIELEFELD Florida Fish and Wildlife Conservation Commission, Fellsmere, FL 32948, USA E-mail: [email protected] Ronald (Ron) R. Bielefeld (photo) is a waterfowl research biologist with the Fish and Wildlife Research Institute of the Florida Fish and Wildlife Conservation Commission, a position he has held for the past 10 years. Prior to working in Florida, Ron led the Indiana Department of Natural Resources' waterfowl management program for 3 years. Ron received his B.S. from the University of Wisconsin-Stevens Point and his M.S. from Louisiana State University. Ron authored Florida's conservation plan for the Florida mottled duck and is overseeing several other research projects involving the species including work on genetics, population monitoring, habitat requirements, and reproductive behavior.Search for more papers by this authorROBERT R. COX JR., ROBERT R. COX JR. United States Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND 58401, USA Robert R. (Bobby) Cox, Jr. is a research wildlife biologist with the U.S. Geological Survey at Northern Prairie Wildlife Research Center. He earned his B.S. (1986) in forest resources (wildlife concentration) from the University of Georgia, his M.S. (1993) in fisheries and wildlife from Utah State University, and his Ph.D. (1996) in wildlife and fisheries science from Louisiana State University. His research interests include all aspects of waterfowl ecology and management.Search for more papers by this author RONALD R. BIELEFELD, RONALD R. BIELEFELD Florida Fish and Wildlife Conservation Commission, Fellsmere, FL 32948, USA E-mail: [email protected] Ronald (Ron) R. Bielefeld (photo) is a waterfowl research biologist with the Fish and Wildlife Research Institute of the Florida Fish and Wildlife Conservation Commission, a position he has held for the past 10 years. Prior to working in Florida, Ron led the Indiana Department of Natural Resources' waterfowl management program for 3 years. Ron received his B.S. from the University of Wisconsin-Stevens Point and his M.S. from Louisiana State University. Ron authored Florida's conservation plan for the Florida mottled duck and is overseeing several other research projects involving the species including work on genetics, population monitoring, habitat requirements, and reproductive behavior.Search for more papers by this authorROBERT R. COX JR., ROBERT R. COX JR. United States Geological Survey, Northern Prairie Wildlife Research Center, Jamestown, ND 58401, USA Robert R. (Bobby) Cox, Jr. is a research wildlife biologist with the U.S. Geological Survey at Northern Prairie Wildlife Research Center. He earned his B.S. (1986) in forest resources (wildlife concentration) from the University of Georgia, his M.S. (1993) in fisheries and wildlife from Utah State University, and his Ph.D. (1996) in wildlife and fisheries science from Louisiana State University. His research interests include all aspects of waterfowl ecology and management.Search for more papers by this author First published: 13 December 2010 https://doi.org/10.2193/0091-7648(2006)34[388:SACMOA]2.0.CO;2Citations: 13 E-mail: [email protected] Ronald (Ron) R. Bielefeld (photo) is a waterfowl research biologist with the Fish and Wildlife Research Institute of the Florida Fish and Wildlife Conservation Commission, a position he has held for the past 10 years. Prior to working in Florida, Ron led the Indiana Department of Natural Resources' waterfowl management program for 3 years. Ron received his B.S. from the University of Wisconsin-Stevens Point and his M.S. from Louisiana State University. Ron authored Florida's conservation plan for the Florida mottled duck and is overseeing several other research projects involving the species including work on genetics, population monitoring, habitat requirements, and reproductive behavior. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract An understanding of survival and underlying causes of mortality is essential to the development of effective management strategies for the mottled duck (Anas fulvigula) in Florida. From radiotelemetry data we estimated season-specific survival rates for the entire annual cycle, cause-specific mortality rates, and annual survival rates. We also tested for variation in survival in relation to year and period of the annual cycle. Our results suggest a strong temporal influence on survival of adult female mottled ducks, both within and among years. We found variation among years in the influence of various mortality agents, with alligators (Alligator mississippiensis), raptors, mammals, and human hunters being the principal mortality factors. Our results also suggest a link between surface water conditions within the Upper St. Johns River Basin (USJRB) and surrounding areas and survival. 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