An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator...
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![Page 1: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/1.jpg)
An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis
![Page 2: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/2.jpg)
American alligator
• Alligator mississippiensis
• Order Crocodylia
• Southeastern United States
• Sub-tropical environments
• Florida Everglades
![Page 3: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/3.jpg)
Order Crocodilia
• Diverse sex-determining systems
• Exothermic
• Extreme physiology
• Most recent ancestor was 275 mya
• Mid- to upper Cretaceous Period
![Page 4: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/4.jpg)
Why Study the American Alligator
• Genetic evolution of Amniotes
• Ancestral reptilian and amniote genomes
• Rates of Evolution
• Medical Implications
• Antibacterial Properties
![Page 5: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/5.jpg)
Crocodilian Genome
• 16,642 Nucleotides
• Evolutionary Rate of Crocodilians
• Relationship between Birds/Crocodilians
• Divergence
![Page 6: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/6.jpg)
Archosaur Ancestry
• Avian and Nonavian Relationship
• Avians have a smaller Genome Size
• Hox expression correlates to skeletal morphology
• Genetic Structure correlates to flight ability
![Page 7: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/7.jpg)
Crocodilians Comparison
• American Alligator
• Saltwater Crocodile
• Neither produce sex-determining chromosomes
• Ancient Divergence in Late Pleistocene Period
![Page 8: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/8.jpg)
![Page 9: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/9.jpg)
Subdivisions in American Alligator Populations
• Homogenous mtDNA
• Demographic and Life History Differences
• Coastal and Inland Habitats
• East-West phylogeographic split
• Not a single cohesive population
![Page 10: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/10.jpg)
Intra-population Variation
• Sub-tropical environments
• Differ in activity ranges
• Movement Rates
• Habitat Use
![Page 11: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/11.jpg)
Intra-population Variation
• Consistent Behavioral Patterns
• Differences in exploration
• Effects on the Environment
• Different Ecological Roles
![Page 12: An Analysis of the Genome and Population Dynamics of the American Alligator, Alligator mississippiensis.](https://reader030.fdocuments.us/reader030/viewer/2022032605/56649e795503460f94b79415/html5/thumbnails/12.jpg)
Conclusion• American Alligator is a Very Unique
Organism
• Dominates SE United States
• Expansive Genomic History
• Medicinal Properties
• Ancestral Archosaurs
• Social Dynamics