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A selective agar medium containing cycloserine (250 mg/L), sulfamethoxazole (76 mg/L), and trimethoprim (4 mg/L) was used for isolation ofClostridium bifermentans from the intestinal contents of California desert tortoise. Typical lecithinase positive colonies that appeared on the plates, were biochemically characterized with the API 20A System and a(More)
– The desert tortoise (Gopherus agassizii) has traditionally been viewed as an archetypal desert-adapted vertebrate. However, evidence from historical ecology, phylogenetics, anatomy, physiology, and biogeography qualifies this view significantly. Ancestors of G. agassizii stabilized as an essentially modern morph some 17-19 million yrs ago ago, perhaps 12(More)
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