TABLE 1.

Comparison of the alkane-degrading sulfate reducers, strains AK-01, Hxd3 and TD3^a

Alkane-degrading bacterial strain	Source	Optimal growth temp (°C)	Alkanes utilized	1-Alkenes utilizedb
AK-01	Petroleum-contaminated estuarine sediment	26–28	C13–C18	C15, C16
Hxd3	Precipitates of an oil-water separator in an oil field	30	C12–C20	C14, C16, C17
TD3	Guaymas Basin sedimentc	60	C6–C16d	NDe

^aInformation for strains Hxd3 and TD3 was adapted from references 1 and 23. 

^bOnly the listed 1-alkenes were tested for utilization. 

^cHydrothermal activity occurs at the site. 

^dOptimal growth in the range of C₈ to C₁₂ for strain TD3. 

^eND, not determined.