Other Amphibian of the Week

Ensatina (Ensatina eschscholtzii)

Ensatina_eschscholtzii_platensis_(3405603045)
photo by Marshal Hedin

leastconcern
Common Name: Ensatina
Scientific Name: Ensatina eschscholtzii
Family: Plethodontidae
Location: United States, Canada, and Mexico
US Location: California, Oregon, and Washington
Size: 5 inches or 145 mm total length

The Ensatina Salamander is a complex of usually 7 different subspecies of salamanders found along the western coast of North America. They are referred to as a ring species or Rassenkreis, which is a series of connected populations that can interbreed with the close populations but can’t with the farther out populations.

ring
photo by Thomas J. Devitt, Stuart J.E. Baird and Craig Moritz, 2011.
Source: (2011). “Asymmetric reproductive isolation between terminal forms of the salamander ring species Ensatina eschscholtzii revealed by fine-scale genetic analysis of a hybrid zone”. BMC Evolutionary Biology 11 (1): 245. 

The Ensatinas are terrestrial salamanders that are direct developing meaning their eggs hatch into small salamanders instead of tadpoles. Female salamanders usually lay around 10 to 15 eggs at a time on the ground. Breeding season in fall and spring but also happens during the winter too.

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