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Among his honors were the Fellows Medal of the California Academy of Sciences, Joseph Leidy Medal of the Academy of Natural Sciences in Philadelphia and the Grinnell Medal from the MVZ. But its in California where the little amphibians story takes an intriguing turn. Then, when he offered both the yellow-eyed ensatina and the Oregon ensatina to the jays, the birds were quicker and more likely to eat the Oregon ensatina, suggesting that the yellow-eyed ensatina resembled the newts. I think theyre an entity in space and time thats ever changing and so for me its a matter of what criteria you want to apply.. The species originated in northern California and southern Oregon and then expanded south along the Sierra Nevada range. [7], The ensatina can usually be found under logs or brush, by or in streams and lakes, and in other moist places. The eggs are brooded under bark, in rotting logs or underground. (Photo courtesy of David Wake). Click the range map to learn more about the distribution They stay underground during hot and dry periods where they are able to tolerate considerable dehydration. He built 12 experimental plots on the forest floor, each 25 square feet (2.3 square meters) in area, using long sections of steel mounted together with bolts. ), Juvenile and adult, Siskiyou Mountains, Siskiyou County. Since then, several generations of . News | A closer look at a classic ring species - Understanding Evolution What data led you to this hypothesis? Jeff Galef and his colleagues have studied the role of cultural transmission in the scavenging behavior of Norway rats (Rattus norvegicus). Projects | This salamander is the only type that has this tail structure and five toes on the back feet. However, where the circle closes -- in the black zone on the map in Southern California -- the salamanders no longer interbreed successfully. What drove their coevolution in this host-parasite system? In the 1970s, Wake was director of the Museum of Vertebrate Zoology, where he conducted evolutionary studies of salamanders like those in the specimen jar, which are members of his favorite genus, Ensatina. Mitochondrion. Found under rocks, logs, other debris, especially bark that has peeled off and fallen beside logs and trees. But these names are simply tags, Wake said. We use cookies to see how our website is performing. Wake died of organ failure after the reoccurrence of cancer, but until the week he died, his health problems did not keep him from publishing papers, conducting fieldwork, meeting with colleagues in person or on Zoom, and calling friends.