@article {ISI:000350088800011,
	title = {{Characterization of vent fauna at the Mid-Cayman Spreading Center}},
	journal = {DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS},
	volume = {97},
	year = {2015},
	month = {mar},
	pages = {124{\textendash}133},
	type = {Article},
	abstract = {Hydrothermal vents in the deep sea have a global distribution on mid-ocean ridges and comprise at least six biogeographic provinces. A geographically isolated vent system was recently discovered on the Mid-Cayman Spreading Center (MCSC). Here, we describe the faunal assemblages associated with this system and their relationship to known biogeographic provinces. Taxa from MCSC vents were sorted based on morphology and barcoded using the cytochrome oxidase I (COI) and 16S ribosomal RNA (16S) genes for identification. Distinct faunal assemblages were recognized around vent chimneys at two hydrothermal vent fields (Von Damm and Beebe) separated by a distance of similar to 13 km and {\textgreater} 2.5-km depth along the Mid-Cayman Spreading Center. These results suggest that depth and/or local conditions structure faunal assemblages in this region. COI and microsatellite markers were then used to explore the genetic structure of the shrimp Rimicaris hybisae, the only abundant species shared between the shallow Von Damm and the deep Beebe vent fields. R. hybisae was not genetically differentiated between the Von Damm Spire and Beebe chimneys, suggesting this species is better adapted for bathymetric dispersal and the differences in local conditions than other MCSC species. In addition, a third faunal assemblage dominated by two species of tubeworms was identified at Von Damm in association with weakly diffuse flow sites (including the site known as {\textquoteleft}{\textquoteleft}Marker X18{\{}{\textquoteright}{\textquoteright}{\}}). The Marker X18 assemblage shares species with seeps in the region. Fauna shared with both vents and seeps at the MCSC reinforces the need for a global biogeographic study of deep-sea chemosynthetic fauna that is not focused on specific habitats. (C) 2014 Elsevier Ltd. All rights reserved.},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/j.dsr.2014.11.011},
	author = {Plouviez, Sophie and Jacobson, Alixandra and Wu, Mengyou and Van Dover, Cindy L}
}
@article {ISI:000354588900002,
	title = {{Sources of organic carbon for Rimicaris hybisae: Tracing individual fatty acids at two hydrothermal vent fields in the Mid-Cayman rise}},
	journal = {DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS},
	volume = {100},
	year = {2015},
	month = {jun},
	pages = {13{\textendash}20},
	type = {Article},
	abstract = {Hydrothermal vents harbor ecosystems mostly decoupled from organic carbon synthesized with the energy of sunlight (photosynthetic carbon source) but fueled instead by oxidation of reduced compounds to generate a chemosynthetic carbon source. Our study aimed to disentangle photosynthetic and chemosynthetic organic carbon sources for the shrimp species Rimicaris hybisae, a primary consumer presumed to obtain its organic carbon mainly from ectosymbiotic chemoautotrophic bacteria living on its gill cover membrane. To provide ectosymbionts with ideal conditions for chemosynthesis, these shrimp live in dense clusters around vent chimneys; they are, however, also found sparsely distributed adjacent to diffuse vent flows, where they might depend on alternative food sources. Densely and sparsely distributed shrimp were sampled and dissected into abdominal tissue and gill cover membrane, covered with ectosymbiotic bacteria, at two hydrothermal vent fields in the Mid-Cayman rise that differ in vent chemistry. Fatty acids (FA) were extracted from shrimp tissues and their carbon isotopic compositions assessed. The FA data indicate that adult R. hybisae predominantly rely on bacteria for their organic carbon needs. Their FA composition is dominated by common bacterial FA of the n7 family (similar to 41{\%}). Bacterial FA of the n4 FA family are also abundant and found to constitute good biomarkers for gill ectosymbionts. Sparsely distributed shrimp contain fractions of n4 FA in gill cover membranes similar to 4{\%} lower than densely packed ones (similar to 18{\%}) and much higher fractions of photosynthetic FA in abdominal tissues, similar to 4{\%} more (compared with 1.6{\%}), suggesting replacement of ectosymbionts along with exoskeletons (molt), while they take up alternative diets of partly photosynthetic organic carbon. Abdominal tissues also contain photosynthetic FA from a second source taken up presumably during an early dispersal phase and still present to c. 3{\%} in adult shrimp. The contribution of photosynthetic carbon to the FA pool of adult R. hybisae is, however, overall small (max. 8{\%}). Significant differences in carbon isotopic values of chemosynthetically derived FA between vent fields suggest that different dominant C fixation pathways are being used. (C) 2015 Published by Elsevier Ltd.},
	keywords = {ROV Jason (Remotely Operated Vehicle)},
	issn = {0967-0637},
	doi = {10.1016/j.dsr.2015.02.003},
	author = {Streit, Kathrin and Bennett, Sarah A and Van Dover, Cindy L and Coleman, Max}
}
