Results from this study demonstrate the fundamental importance of continuing taxonomic investigations …

• Abstract
• Introduction
• Materials and methods
• Results and discussion
• Acknowledgements
• References
• Figures
• Tables

Biology Articles » Conservation Biology » A cryptic taxon of Galápagos tortoise in conservation peril » Figures

Figures

- A cryptic taxon of Galápagos tortoise in conservation peril

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Figure 1 Distribution maps of Galápagos tortoises throughout the archipelago and on Santa Cruz. Shaded islands indicate presence of extant tortoise populations and italized names represent current subspecific designations; island names indicated in all capitals, with distinct populations on Isabela specified by name; triangles represent volcanoes and circles indicate sampled populations throughout the archipelago. Shaded and unshaded tortoise caricatures signify 'domed' and 'saddleback' morphologies, respectively. The current distributions of tortoises (shaded yellow) and the agricultural corridor (shaded black) on Santa Cruz (Pritchard 1996) are plotted on a satellite map (MODOS Rapid Response Project, NASA/GSFC). Scale bar specified for the Galápagos archipelago (above) and Santa Cruz (below).

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Figure 2 Bayesian phylogenetic tree of extant and extinct Galápagos tortoise taxa. Distinct haplogroups of becki, guntheri and vicina are indicated with numbers and follow figure 1; island of origin for each taxon is shown on the right; an asterisk (*) signifies an extinct taxon or population and arrows highlight the relative phylogenetic placement of the three populations of giant tortoises on Santa Cruz. Bayesian posterior probabilities and maximum likelihood bootstrap proportions (greater than 50%) are indicated above and below the branches, respectively. For illustration purposes, accurate branch lengths leading to out-group taxa are not shown (indicated by dashed line).

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