[Eoas-seminar] Oceanography Thesis Defense - Alexa Putillo - Mar 30, 10am - Zoom Meeting

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Mon Mar 23 13:35:12 EDT 2020

Please note that this defense will only take place through the Zoom online platform. Please download Zoom if you wish to attend.

Topic: Masters Defense

Time: Mar 30, 2020 10:00 AM Eastern Time (US and Canada)

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Join URL: https://fsu.zoom.us/j/458653834<https://urldefense.com/v3/__https:/fsu.zoom.us/j/458653834__;!!Epnw_ITfSMW4!7d4wvOCyXQdslpkhXYwusnrvx20hF1Tt79m_kkNVuuYO0gYJQpmVfKw5V27gAZO44Q$>

Meeting ID: 458-653-834

Oceanography Defense

Alexa Putillo

M.S. Environmental Sciences Candidate

Title:  Influence of diet on blood biochemistry profiles in juvenile green turtles (Chelonia mydas)

Major Professor:  Dr. Mariana Fuentes

Date: Monday, March 30, 2020                        Time: 10:00 AM

Location: On virtual platform - see above for Zoom meeting information

Blood biochemistry profiles aid health assessment of marine turtles but knowledge of the influence of regional biological factors (e.g. habitat, diet) on marine turtle blood analyte values is limited. To investigate the influence of diet on blood chemistry values in juvenile green turtles (Chelonia mydas) we used carbon and nitrogen stable isotopes to provide a quantitative estimate of forage item proportions in green turtles feeding at two distinct areas (Bonefish Hole and South Flats) in Bimini, Bahamas. Blood samples were obtained from 13 turtles in Bonefish Hole (a mangrove tidal estuary) and 15 turtles in South Flats (an open water seagrass bed) in 2018. Sessile filter feeders contributed the largest proportion of diet in Bonefish Hole and seagrass contributed the highest proportion of diet in South Flats. Turtles at Bonefish Hole presented significantly lower cholesterol, total protein, phosphorus, triglycerides, and aspartate transaminase compared to South Flats. Across all turtles, those feeding primarily on red algae presented the highest uric acid and alkaline phosphatase and turtles with a seagrass-dominated diet had the highest cholesterol. Understanding dietary influence on blood biochemistry is a priority for green turtle conservation because it will help inform health and nutritional evaluations, and the trends reported can aid the interpretation of blood analyte values in marine turtle populations worldwide.

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