Zoe P. McKiness

Monsanto (United States)

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Colleen M. Cavanaugh

Harvard University

Cindy Lee Van Dover

Marine Conservation Institute

Yong‐Jin Won

Ewha Womans University

Erin R. McMullin

Bard College at Simon's Rock

Curtis R. Young

National Oceanography Centre

Mary Turnipseed

University of California, Santa Barbara

Dorothee Götz

University of Waikato

Frank Zielinski

Technical University of Darmstadt

Shana K. Goffredi

Occidental College

Eric G. DeChaine

Western Washington University

Cooperative Institutions

Harvard University

Monterey Bay Aquarium Research Institute

Woods Hole Oceanographic Institution

Massachusetts Institute of Technology

Max Planck Society

Max Planck Institute for Marine Microbiology

Sorbonne Université

Rutgers, The State University of New Jersey

William & Mary

Williams (United States)

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Characterization of Symbiont Populations in Life-History Stages of Mussels From Chemosynthetic Environments

Biological Bulletin (2005)

Jennifer L. Salerno Stephen A. Macko Steve J. Hallam Monika Bright Yong‐Jin Won

The densities of chemoautotrophic and methanotrophic symbiont morphotypes were determined in life- history stages (post-larvae, juveniles, adults) of two species of mussels (Bathymodiolus azoricus and B. heckerae) from deep-sea chemosynthetic environments (the Lucky Strike hydrothermal vent and the Blake Ridge cold seep) in the Atlantic Ocean. Both symbiont morphotypes were observed in all specimens and in the same relative proportions, regardless of life-history stage. The relative abundance of symbiont morphotypes, determined by transmission electron microscopy, was different in the two species: chemoautotrophs were dominant (13:1–18:1) in B. azoricus from the vent site; methanotrophs were dominant (2:1–3:1) in B. heckerae from the seep site. The ratio of CH4:H2S is proposed as a determinant of the relative abundance of symbiont types: where CH4:H2S is less than 1, as at the Lucky Strike site, chemoautotrophic symbionts dominate; where CH4:H2S is greater than 2, as at the seep site, methanotrophs dominate. Organic carbon and nitrogen isotopic compositions of B. azoricus (δ13C = −30‰; δ15N = −9‰) and B. heckerae (δ13C = −56‰; δ15N = −2‰) varied little among life-history stages and provided no record of a larval diet of photosynthetically derived organic material in the post-larval and juvenile stages.

Chemosynthesis

Cold seep

Petroleum seep

10.2307/3593123

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Citations (71)

Ultrastructural, biochemical, and immunological characterization of two populations of the mytilid mussel Bathymodiolus azoricus from the Mid-Atlantic Ridge: evidence for a dual symbiosis

Marine Biology (2002)

A. Fiala-Medioni Zoe P. McKiness P. R. Dando Jacques Boulègue André Mariotti

10.1007/s00227-002-0903-9

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Citations (149)

Biogeography and Ecological Setting of Indian Ocean Hydrothermal Vents

Science (2001)

Cindy Lee Van Dover Susan E. Humphris Daniel J. Fornari Colleen M. Cavanaugh Robert Collier

Within the endemic invertebrate faunas of hydrothermal vents, five biogeographic provinces are recognized. Invertebrates at two Indian Ocean vent fields (Kairei and Edmond) belong to a sixth province, despite ecological settings and invertebrate-bacterial symbioses similar to those of both western Pacific and Atlantic vents. Most organisms found at these Indian Ocean vent fields have evolutionary affinities with western Pacific vent faunas, but a shrimp that ecologically dominates Indian Ocean vents closely resembles its Mid-Atlantic counterpart. These findings contribute to a global assessment of the biogeography of chemosynthetic faunas and indicate that the Indian Ocean vent community follows asymmetric assembly rules biased toward Pacific evolutionary alliances.

Chemosynthesis

Marine invertebrates

10.1126/science.1064574

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Citations (317)

A dual symbiosis shared by two mussel species, Bathymodiolus azoricus and Bathymodiolus puteoserpentis (Bivalvia: Mytilidae), from hydrothermal vents along the northern Mid‐Atlantic Ridge

Environmental Microbiology (2006)

Sébastien Duperron Claudia Bergin Frank Zielinski Anna Blazejak Annelie Pernthaler

Bathymodiolus azoricus and Bathymodiolus puteoserpentis are symbiont-bearing mussels that dominate hydrothermal vent sites along the northern Mid-Atlantic Ridge (MAR). Both species live in symbiosis with two physiologically and phylogenetically distinct Gammaproteobacteria: a sulfur-oxidizing chemoautotroph and a methane-oxidizer. A detailed analysis of mussels collected from four MAR vent sites (Menez Gwen, Lucky Strike, Rainbow, and Logatchev) using comparative 16S rRNA sequence analysis and fluorescence in situ hybridization (FISH) showed that the two mussel species share highly similar to identical symbiont phylotypes. FISH observations of symbiont distribution and relative abundances showed no obvious differences between the two host species. In contrast, distinct differences in relative symbiont abundances were observed between mussels from different sites, indicating that vent chemistry may influence the relative abundance of thiotrophs and methanotrophs in these dual symbioses.

Mytilidae

Cold seep

10.1111/j.1462-2920.2006.01038.x

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Citations (180)

A new bathymodioline mussel symbiosis at the Juan de Fuca hydrothermal vents

Marine Biology (2005)

Zoe P. McKiness Erin R. McMullin Charles R. Fisher Colleen M. Cavanaugh

Cold seep

Chemosynthesis

10.1007/s00227-005-0065-7

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