@article {Thornhill2012,
	title = {{Adaptive radiation in extremophilic Dorvilleidae (Annelida): diversification of a single colonizer or multiple independent lineages?}},
	journal = {Ecology and Evolution},
	volume = {2},
	number = {8},
	year = {2012},
	pages = {1958{\textendash}1970},
	abstract = {Metazoan inhabitants of extreme environments typically evolved from forms found in less extreme habitats. Understanding the prevalence with which animals move into and ultimately thrive in extreme environments is critical to elucidating how complex life adapts to extreme conditions. Methane seep sediments along the Oregon and California margins have low oxygen and very high hydrogen sulfide levels, rendering them inhospitable to many life forms. Nonetheless, several closely related lineages of dorvilleid annelids, including members of Ophryotrocha, Parougia, and Exallopus, thrive at these sites in association with bacterial mats and vesicomyid clam beds. These organisms are ideal for examining adaptive radiations in extreme environments. Did dorvilleid annelids invade these extreme environments once and then diversify? Alternatively, did multiple independent lineages adapt to seep conditions? To address these questions, we examined the evolutionary history of methane-seep dorvilleids using 16S and Cyt b genes in an ecological context. Our results indicate that dorvilleids invaded these extreme habitats at least four times, implying preadaptation to life at seeps. Additionally, we recovered considerably more dorvilleid diversity than is currently recognized. A total of 3 major clades (designated {\textquotedblleft} Ophryotrocha,{\textquotedblright} {\textquotedblleft}Mixed Genera{\textquotedblright} and {\textquotedblleft} Parougia{\textquotedblright}) and 12 terminal lineages or species were encountered. Two of these lineages represented a known species, Parougia oregonensis, whereas the remaining 10 lineages were newly discovered species. Certain lineages exhibited affinity to geography, habitat, sediment depth, and/or diet, suggesting that dorvilleids at methane seeps radiated via specialization and resource partitioning.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {2045-7758},
	doi = {10.1002/ece3.314},
	url = {http://dx.doi.org/10.1002/ece3.314},
	author = {Thornhill, D J and Struck, T H and Ebbe, B and Lee, R W and Mendoza, G F and Levin, L A and Halanych, K M}
}
@article {Lee1995,
	title = {{Assimilation of inorganic nitrogen by seep mytilid 1a, an undescribed deep-sea mussel containing methanotrophic endosymbionts: fate of assimilated nitrogen and the relation between methane and nitrogen assimilation}},
	journal = {Marine Ecology Progress Series},
	volume = {123},
	year = {1995},
	pages = {137{\textendash}148},
	issn = {0171-8630},
	doi = {10.3354/meps123137},
	url = {http://dx.doi.org/10.3354/meps123137},
	author = {Lee, R W and Childress, J J}
}
@article {Lee1994,
	title = {{Assimilation of inorganic nitrogen by marine invertebrates and their chemoautotrophic and methanotrophic symbionts}},
	journal = {Applied and Environmental Microbiology},
	volume = {60},
	number = {6},
	year = {1994},
	pages = {1852{\textendash}1858},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	issn = {0099-2240},
	url = {http://www.pubmedcentral.nih.gov/picrender.fcgi?artid=201572{\&}blobtype=pdf},
	author = {Lee, R W and Childress, J J}
}
@article {Lee1992,
	title = {{Ammonium and free amino acids as nitrogen sourcess for the chemoautotrophic clam symbiosis Solemya reidi Bernard (Bivalvia : Protobranchiata)}},
	journal = {Journal of Experimental Marine Biology and Ecology},
	volume = {158},
	number = {1},
	year = {1992},
	pages = {75{\textendash}91},
	issn = {0022-0981},
	doi = {10.1016/0022-0981(92)90309-X},
	url = {http://dx.doi.org/10.1016/0022-0981(92)90309-X},
	author = {Lee, R W and Thuesen, E V and Childress, J J}
}
