FIG 5.

Lipid production rates for M. marburgensis, M. okinawensis, and M. villosus at different temperatures (in a 50-mL initial liquid volume). Shown are lipid production rates for selected species in micromoles per gram per hour based on endpoint measurements for M. marburgensis (50°C, 60°C, and 65°C, with carbonates) (a), M. okinawensis (50°C, 60°C, 65°C, and 70°C, with once-per-day gassing) (b), and M. villosus (65°C and 80°C) (c). Each bar represents a set of octuplicates. The error bars indicate standard deviations. Experiments were performed at different incubation temperatures. “2/d” refers to two gassing procedures per day; otherwise, gassing was performed once per day. mac arch, macrocyclic archaeol.