@article {Becker2011,
	title = {{Stable isotopes provide new insights into vestimentiferan physiological ecology at Gulf of Mexico cold seeps}},
	journal = {Naturwissenschaften},
	volume = {98},
	number = {2},
	year = {2011},
	month = {feb},
	pages = {169{\textendash}174},
	abstract = {On the otherwise low-biomass seafloor of the Gulf of Mexico (GoM) continental slope, natural oil and gas seeps are oases of local primary production that support lush animal communities. Hundreds of seep communities have been documented on the continental slope, and nutrition derived from seeps could be an important link in the overall GoM food web. Here, we present a uniquely large and cohesive data set of $δ$13C, $δ$15N, and $δ$34S compositions of the vestimentiferan tubeworms Escarpia laminata and Lamellibrachia sp. 1, which dominate biomass at GoM seeps and provide habitat for hundreds of other species. Our sampling design encompassed an entire region of the GoM lower slope, allowing us for the first time to assess spatial variability in isotope compositions and to robustly address long-standing hypotheses about how vestimentiferans acquire and cycle nutrients over their long lifespan (200+~years). Tissue $δ$13C values provided strong evidence that larger adult vestimentiferans use their buried roots to take up dissolved inorganic carbon from sediment pore water, while very small individuals use their plume to take up carbon dioxide from the seawater. $δ$34S values were extremely variable among individuals of the same species within one location (S values were extremely variable among individuals of the same species within one location (2 area), indicating high variability in the inorganic sulfur pools on a very small spatial scale. This finding supports the hypothesis that vestimentiferans use their roots to cycle sulfate and sulfide between their symbionts and free-living consortia of sulfate-reducing archaea in the sediment. Finally, consistent differences in $δ$15N between two cooccurring vestimentiferan species provided the first strong evidence for partitioning of inorganic resources, which has significant implications for the ecology and evolution of this taxonomic group.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0028-1042},
	doi = {10.1007/s00114-010-0754-z},
	author = {Becker, E L and Macko, S A and Lee, R W and Fisher, C R}
}
@article {Miglietta2010,
	title = {{Species boundaries of Gulf of Mexico vestimentiferans (Polychaeta, Siboglinidae) inferred from mitochondrial genes}},
	journal = {Deep-Sea Research. Part II: Topical Studies in Oceanography},
	volume = {57},
	number = {21-23},
	year = {2010},
	pages = {1916{\textendash}1925},
	abstract = {At least six morphospecies of vestimentiferan tubeworms are associated with cold seeps in the Gulf of Mexico (GOM). The physiology and ecology of the two best-studied species from depths above 1000 m in the upper Louisiana slope (Lamellibrachia luymesi and Seepiophila jonesi) are relatively well understood. The biology of one rare species from the upper slope (escarpiid sp. nov.) and three morphospecies found at greater depths in the GOM (Lamellibrachia sp. 1, L. sp. 2, and Escarpia laminata) are not as well understood. Here we address species distributions and boundaries of cold-seep tubeworms using phylogenetic hypotheses based on two mitochondrial genes. Fragments of the mitochondrial large ribosomal subunit rDNA (16S) and cytochrome oxidase subunit I (COI) genes were sequenced for 167 vestimentiferans collected from the GOM and analyzed in the context of other seep vestimentiferans for which sequence data were available. The analysis supported five monophyletic clades of vestimentiferans in the GOM. Intra-clade variation in both genes was very low, and there was no apparent correlation between the within-clade diversity and collection depth or location. Two of the morphospecies of Lamellibrachia from different depths in the GOM could not be distinguished by either mitochondrial gene. Similarly, E. laminata could not be distinguished from other described species of Escarpia from either the west coast of Africa or the eastern Pacific using COI. We suggest that the mitochondrial COI and 16S genes have little utility as barcoding markers for seep vestimentiferan tubeworms.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0967-0645},
	doi = {10.1016/j.dsr2.2010.05.007},
	url = {http://dx.doi.org/10.1016/j.dsr2.2010.05.007},
	author = {Miglietta, M P and Hourdez, S and Cowart, D A and Schaeffer, S W and Fisher, C R}
}
@article {Becker2010,
	title = {{Stable carbon and nitrogen isotope compositions of hydrocarbon-seep bivalves on the Gulf of Mexico lower continental slope}},
	journal = {Deep-Sea Research. Part II: Topical Studies in Oceanography},
	volume = {57},
	number = {21-23},
	year = {2010},
	pages = {1957{\textendash}1964},
	abstract = {Stable isotope compositions of cold-seep bivalves can illuminate processes that affect the chemical and isotopic compositions of seeping fluids along the continental slope of the Gulf of Mexico as well as provide insight into the physiological ecology of these species. Carbon and nitrogen isotope compositions were analyzed in mussels and clams from 14 seep sites spanning a depth range of 1000 to 2800 m along the lower Louisiana slope of the Gulf of Mexico. Mussels of three species found on the lower slope, Bathymodiolus childressi, B. brooksi, and B. heckerae, showed site-specific differences in tissue $δ$13C, reflecting differences in the local methane pool. Mussels from sites on the lower slope sitting atop the contiguous salt sheet generally had tissue $δ$13C values that reflected a stronger biogenic methane signal (-70.8 to -58.8{\textperthousand}) than mussels on the upper slope or seaward of the Sigsbee Escarpment (-67.3 to -40.4{\textperthousand}). Clams (Calyptogena ponderosa and Calyptogena sp. nov.) had a narrow range of $δ$13C values between -37.0 and -34.4{\textperthousand}, indicating that their thiotrophic symbionts are fixing primarily seawater-dissolved organic carbon. The most depleted tissue $δ$15N values yet published for both mussels and clams are reported in this study at -23.7 and -9.2{\textperthousand}, respectively. These depleted values have implications for the assimilation of inorganic nitrogen by these symbioses and the concentrations of particular inorganic nitrogen sources in the local environment.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0967-0645},
	doi = {10.1016/j.dsr2.2010.05.002},
	url = {http://dx.doi.org/10.1016/j.dsr2.2010.05.002},
	author = {Becker, E L and Lee, R W and Macko, S A and Faure, B M and Fisher, C R}
}
@article {Sancho2005,
	title = {{Selective predation by the zoarcid fish Thermarces cerberus at hydrothermal vents.}},
	journal = {Deep-Sea Research. Part I: Oceanographic Research Papers},
	volume = {52},
	number = {5},
	year = {2005},
	pages = {837{\textendash}844},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/j.dsr.2004.12.002},
	url = {http://dx.doi.org/10.1016/j.dsr.2004.12.002},
	author = {Sancho, G and Fisher, C R and Mills, S W and Micheli, F and Johnson, G A and Lenihan, H S and Peterson, C H and Mullineaux, L S}
}
@article {Flores2005,
	title = {{Sulfide binding is mediated by zinc ions discovered in the crystal structure of a hydrothermal vent tubeworm hemoglobin}},
	journal = {Proceedings of the National Academy of Sciences of the United States of America},
	volume = {102},
	number = {8},
	year = {2005},
	pages = {2713{\textendash}2718},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0027-8424},
	doi = {10.1073/pnas.0407455102},
	url = {http://dx.doi.org/10.1073/pnas.0407455102},
	author = {Flores, J F and Fisher, C R and Carney, S L and Green, B N and Freytag, J K and Schaeffer, S W and Royer, W E}
}
@article {Martineu1997,
	title = {{Sulfide binding in the body fluids of hydrothermal vent alvinellid polychaetes}},
	journal = {Physiological Zoology},
	volume = {70},
	number = {5},
	year = {1997},
	pages = {578{\textendash}588},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0031-935X},
	doi = {10.1086/515864},
	author = {Martineu, P and Juniper, S K and Fisher, C R and Massoth, G J}
}
@article {Childress1991a,
	title = {{Sulfide and carbon dioxide uptake by the hydrothermal vent clam, Calyptogena magnifica and its chemoautotrophic symbionts}},
	journal = {Physiological Zoology},
	volume = {64},
	number = {6},
	year = {1991},
	pages = {1444{\textendash}1470},
	issn = {0031-935X},
	author = {Childress, J J and Fisher, C R and Favuzzi, J A and Sanders, N K}
}
@article {Childress1991,
	title = {{Sulfide-driven autotrophic balance in the bacterial symbiont-containing hydrothermal vent tubeworm Riftia pachyptila Jones}},
	journal = {Biological Bulletin},
	volume = {180},
	number = {1},
	year = {1991},
	pages = {135{\textendash}153},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0006-3185},
	url = {http://www.biolbull.org/cgi/reprint/180/1/135},
	author = {Childress, J J and Fisher, C R and Favuzzi, J A and Kochevar, R and Sanders, N K and Alayse, A M}
}
@article {Brooks1990,
	title = {{Salt, seeps and symbiosis in the Gulf of Mexico}},
	journal = {EOS, Transactions, American Geophysical Union},
	volume = {71},
	number = {45},
	year = {1990},
	pages = {1772{\textendash}1773},
	issn = {0096-3941},
	author = {Brooks, J M and Wiesenburg, D A and Roberts, H and Carney, R S and MacDonald, I R and Fisher, C R and Guinasso, N L and Sager, W W and McDonald, S J and Burke, R A and Aharon, P and Bright, T J}
}
@article {Fisher1990a,
	title = {{Stable carbon isotopic evidence for carbon limitation in hydrothermal vent vestimentiferans}},
	journal = {Science},
	volume = {247},
	number = {4946},
	year = {1990},
	pages = {1094{\textendash}1096},
	issn = {0036-8075},
	doi = {10.1126/science.247.4946.1094},
	url = {http://dx.doi.org/10.1126/science.247.4946.1094},
	author = {Fisher, C R and II, Kennicutt M C and Brooks, J M}
}
@article {Fisher1984,
	title = {{Substrate oxidation by trophosome tissue from Riftia pachyptila Jones (Phylum pogonophora)}},
	journal = {Marine Biology Letters},
	volume = {5},
	number = {3},
	year = {1984},
	pages = {171{\textendash}183},
	issn = {0165-859X},
	author = {Fisher, C R and Childress, J J}
}
