Guaymas Basin, Mexico

Fig. 12. Salient features of the GC-MS data for a hydrothermal petroleum (Guaymas Basin, Gulf of California, Mexico) (a) TIC trace of total oil, (b) mjz 191 key ion for hopanes, and ctmjz 217 key ion for steranes. Numbers refer to carbon chain (/ -alkanes) or skeleton, UCM = unresolved complex mixture, Pr = pristane, Ph = phytane, asterisks = other isoprenoids, ot, ot, R, S = configurations of biomarkers.

Weber, A. and Jorgensen, B.B., 2002. Bacterial sulfate reduction in hydrothermal sediments of the Guaymas Basin, Gulf of California, Mexico. Deep-Sea Research, 49 827-841. 

Riftia pachyptila Trophosome Guaymas basin, NW Mexico 22.2 Ruelas-Inzunza et al. (2005)... 

To our knowledge, only one study on Hg levels in vestimentiferan tube worms (Rifita pachyptila) has been published in Mexico. This study involved specimens collected from the hydrothermal field of the Guaymas basin at a 2,000 m depth. The Hg concentration in trophosome (the organ that hosts bacteria responsible for part of their metabolism) was 22.2 pg g- dry wt. In R. pachyptila from other hydro-thermal areas in the east Pacific Rise (13 N), Hg levels (from 11.3 to 23 pg g dry wt) in trophosome were comparable to values reported in specimens from the Guaymas basin. The vestimentum is a distinctive part of the body of R. pachyptila. 

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