Mixotrophic chemosynthesis in a deep-sea anemone from hydrothermal vents in the Pescadero Basin Gulf of California

摘要

Locations and in situ images of the actiniarian Ostiactis pearseae. a Location of South Pescadero Basin (SPB) vent fields Auka (in b) and JaichMaa ‘ja’ag (in c). Inset shows the location of SPB at the mouth of the Gulf of California between the tip of the Baja Peninsula and mainland Mexico. b Auka vent field samples and chimneys (samples symbolized as in c). c JaichMaa ‘ja’ag vent field samples and chimneys. Maps in b and c are at the same scale. All are in UTM Zone 12N. Legend shows the sample types. Maps a, b, and c show 1-m resolution bathymetry collected by mapping AUVs (owned and operated by the Monterey Bay Aquarium Research Institute). Color ramps show the depth ranges. d–f Specimens of Ostiactis pearseae collected from both vent fields (shown as yellow squares in b and c), indicated by arrows. g An individual O. pearseae near to the chemosynthetic tubeworms Riftia pachyptila and Oasisia aff. alvinae