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Articles 1 - 5 of 5

Full-Text Articles in Life Sciences

Sunscreen Biosynthesis In Cyanobacteria, Tanya Soule Aug 2011

Sunscreen Biosynthesis In Cyanobacteria, Tanya Soule

Tanya Soule

No abstract provided.


Island Fragmentation Drives Evolutionary Diversification Of Galápagos Lava Lizards (Microlophus Spp.), Mark Jordan, H. Snell Jul 2011

Island Fragmentation Drives Evolutionary Diversification Of Galápagos Lava Lizards (Microlophus Spp.), Mark Jordan, H. Snell

Mark A. Jordan

No abstract provided.


Phenotypic Divergence Despite High Levels Of Gene Flow In Galapagos Lava Lizards (Microlophus Albemarlensis), Mark Jordan, H. Snell, H. Snell, W. Jordan Jul 2011

Phenotypic Divergence Despite High Levels Of Gene Flow In Galapagos Lava Lizards (Microlophus Albemarlensis), Mark Jordan, H. Snell, H. Snell, W. Jordan

Mark A. Jordan

The extent of evolutionary divergence of phenotypes between habitats is predominantly the result of the balance of differential natural selection and gene flow. Lava lizards (Microlophus albemarlensis) on the small island of Plaza Sur in the Galápagos archipelago inhabit contrasting habitats: dense vegetation on the western end of the island thins rapidly in a transitional area, before becoming absent on the eastern half. Associated with these habitats are phenotypic differences in traits linked to predator avoidance (increased wariness, sprint speed, and endurance in lizards from the sparsely vegetated habitat). This population provides an opportunity to test the hypothesis that reduced …


The Influence Of Historical Landscape Change On Genetic Variation And Population Structure Of A Terrestrial Salamander ( Plethodon Cinereus ), Mark Jordan, Douglas Morris, Scott Gibson Jul 2011

The Influence Of Historical Landscape Change On Genetic Variation And Population Structure Of A Terrestrial Salamander ( Plethodon Cinereus ), Mark Jordan, Douglas Morris, Scott Gibson

Mark A. Jordan

Forest loss and fragmentation is expected to shape the genetic structure of amphibian populations and reduce genetic variation. Another factor widely understood to have impacted these same parameters in North America is the range expansion that occurred following glacial retreat at the end of the Pleistocene. The Eastern Red-Backed Salamander (Plethodon cinereus) has been subjected to both processes. In this context, we investigated the historical events that are likely to have shaped genetic variation in this species using a panel of six microsatellite markers screened on individuals sampled across ten localities in northeastern Indiana, USA. We found low genetic diversity …


Historical Fragmentation And Genetic Drift In Populations Of Galápagos Lava Lizards (Microlophus Albemarlensis Complex), Mark Jordan, H. Snell Jul 2011

Historical Fragmentation And Genetic Drift In Populations Of Galápagos Lava Lizards (Microlophus Albemarlensis Complex), Mark Jordan, H. Snell

Mark A. Jordan

No abstract provided.