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Impacts of algal toxins on marine mammals
Title
Impacts of algal toxins on marine mammals.
Creator
Van Dolah, F. M., Doucette, G. J., Gulland, F. M. D., Rowles, T. L., Bossart, Gregory D., Harbor Branch Oceanographic Institute
Date Issued
2003
PURL
http://purl.flvc.org/fcla/dt/3352937
Subject Headings
Algal toxins, Marine mammals, Neurotoxins
Format
Document (PDF)
EXPOSURE TO ALGAL BIOTOXINS: EXPLORING HEALTH EFFECTS IN GREEN SEA TURTLES (CHELONIA MYDAS)
Title
EXPOSURE TO ALGAL BIOTOXINS: EXPLORING HEALTH EFFECTS IN GREEN SEA TURTLES (CHELONIA MYDAS).
Creator
Brown, Hunter, Page, Annie, Florida Atlantic University, Department of Marine Science and Oceanography, Charles E. Schmidt College of Science
Abstract/Description
In the inter-coastal waters of Florida, green sea turtles (Chelonia mydas) are regularly exposed to regional blooms of harmful algae which produce biotoxins. A retrospective analysis was conducted on stranded green sea turtles along the Indian River Lagoon, FL, USA. Stranding, necropsy, and histopathology reports were analyzed for 40 juvenile turtles. Liver (N=40) and kidney (N=36) tissues were analyzed for a suite of 14 harmful algal bloom (HAB)-associated biotoxins. Thirty-four (85%)...
Show moreIn the inter-coastal waters of Florida, green sea turtles (Chelonia mydas) are regularly exposed to regional blooms of harmful algae which produce biotoxins. A retrospective analysis was conducted on stranded green sea turtles along the Indian River Lagoon, FL, USA. Stranding, necropsy, and histopathology reports were analyzed for 40 juvenile turtles. Liver (N=40) and kidney (N=36) tissues were analyzed for a suite of 14 harmful algal bloom (HAB)-associated biotoxins. Thirty-four (85%) turtles tested positive for at least one biotoxin, including 21(53%) liver and 22(61%) kidney tissues. Statistically significant relationships were identified between the presence of common histopathological abnormalities and biotoxins of: melanomacrophage/hyperplasia and brevetoxin-3 (P=0.03) in liver tissues, and renal fibrosis and nodularin (P = 0.04) and lymphocytosis and neosaxitoxin (P=0.03) in kidney tissues. These data demonstrate that wild turtles are commonly exposed to HAB-associated biotoxins with potential chronic health effects that contribute to strandings in the Indian River Lagoon.
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Date Issued
2023
PURL
http://purl.flvc.org/fau/fd/FA00014363
Subject Headings
Chelonia mydas, Green sea turtles, Algal toxins, Indian River (Fla. : Lagoon)
Format
Document (PDF)