Lutjanus jocu (Dog snapper) as a bio-indicator of emerging contaminants and changes in environmental condition.
Poster Mar 01, 2016
M. Sánchez-García1, S. J. Zottoli2 & L.Roberson-Murillo1
Our research assesses the use of Lutjanus jocu as a bio indicator of changes in environmental condition and water contaminated with toxic substances in estuarine ecosystems. Our two focuses are: assessing the behavioral effects of changes in pH and dissolved oxygen as result of anthropogenic input and assess the behavioral effects of sub-lethal concentrations of toxic substances. Through behavioral endpoints we evaluate the effects of exposure to stressors, because it integrates internal and external factors that can link biochemical and physiological processes, providing an understanding of the effects of environmental change. High speed imaging allows us to study the startle behavior, a quantifiable biological endpoint that can lend valuable insight into changes in the Central Nervous System and the effects of sub-lethal stressors on fish movement and responses to stimuli. Future work will include the analysis of Mauthner cell which are known to initiate the startle behavior. Although other fish models are used for biological essays, Lutjanus jocu could provide essential information for marine specific fishes and insight on effects of anthropogenic input on marine ecosystems at the individual- and population-level.
Analysis of Extract Drying Criteria for Oil & Grease Method 1664A/BPoster
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Fundamentals and Comparisons for Organic Sample Extract EvaporationPoster
Sample preparation is a key step in the analysis process
Parameters for evaporation and their impact on analysis have been discussed
Improvements in matching the sample to the evaporation device characteristics can help reduce variability and improve recovery
Examples for choosing a system based on sample volume, types of analytes, sample load, and initial investment considerations
Using Elemental Analysis For Discrimination Of Pinot Noir Wines From Six Different Districts In An AvaPoster
The determination of geographical origin of wine is gaining increased interest by researchers and federal agencies around the world, partially due to increased fraud with regards to place of origin labelling. For wine, multi-elemental profiling of macro, micro, and trace elements has been proposed for determination of authenticity. Commercial wines from different wineries in 5 different neighborhoods within one AVA show characteristic elemental fingerprints. Macro, micro and trace elements as well as elemental ratios contribute to the observed separation, indicating the involvement of multiple factors and underlying mechanisms, including location and soil composition, elemental uptake by vine and rootstock, viticulture and nutrient management, water sources, and small differences in the different wineries.READ MORE