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http://hdl.handle.net/10609/97066
Title: | Genetic study and geographical modelling distribution of the Ciguatera-Causing dinoflagellates, Gambierdiscus and Fukuyoa genera |
Author: | Tudó Casanova, Àngels |
Tutor: | Pizarro Tobías, Paloma |
Others: | Alcaraz, Carles |
Abstract: | Gambierdiscus and Fukuyoa are two genera of dinoflagellates found mainly in tropical zones, but in recent decades these species have been detected in cooler-temperate zones. It seems that there is an expansion of these microalgae mediated by climate change. Aims of this work are study the genetic diversity of these genera, see if there is a genetic and geographical relationships and analyse the possible expansion. To this end, classical genetic analysis tools have been used. In addition, efforts have been done to model the presence or absence of species for each genera through logistic models with a large number of environmental variables. As a result, long datasets of sequences associated with coordinates have been created. Throughout the created dataset has been analysed the diversity of both genera. Also, logistic models have been calculated to determine the presence or absence of microalgae. Tropical zones are hotspots of these dinoflagellates, but genetic indices of expansion might exist. For now, with our results, it is not possible to conclude that there is an expansion to cool areas, but this work is a first approach to observe this type of expansions in dinoflagellate. In addition, first analysis with logistic models based on the presence and absence of microalgae are studied, these analyses can be further completed in the future with more powerful models. |
Keywords: | ciguatoxin microalgae genetics |
Document type: | info:eu-repo/semantics/masterThesis |
Issue Date: | Jun-2019 |
Publication license: | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
Appears in Collections: | Trabajos finales de carrera, trabajos de investigación, etc. |
Files in This Item:
File | Description | Size | Format | |
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atudoTFM0619memory.pdf | Memory of TFM | 1,7 MB | Adobe PDF | View/Open |
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