@article {6888, title = {Is It First the Egg or the Shrimp? {\textendash} Diversity and Variation in Microbial Communities Colonizing Broods of the Vent Shrimp Rimicaris exoculata During Embryonic Development}, journal = {Frontiers in Microbiology}, volume = {10}, year = {2019}, month = {May-04-2020}, doi = {10.3389/fmicb.2019.00808}, url = {https://www.frontiersin.org/article/10.3389/fmicb.2019.00808/full}, author = {Methou, Pierre and Hern{\'a}ndez-{\'A}vila, Ivan and Aube, Johanne and Cueff-Gauchard, Val{\'e}rie and Gayet, Nicolas and Amand, Louis and Bruce Shillito and Pradillon, Florence and Cambon-Bonavita, Marie-Anne} } @article {6817, title = {Gill chamber and gut microbial communities of the hydrothermal shrimp Rimicaris chacei Williams and Rona 1986: A possible symbiosis}, journal = {PLOS ONE}, volume = {13}, year = {2018}, month = {Feb-11-2018}, pages = {e0206084}, abstract = {
Rimicaris chacei Williams and Rona 1986, formerly named as Chorocaris chacei, is a caridean
shrimp living in deep-sea hydrothermal ecosystems. This shrimp is endemic to the Mid
Atlantic Ridge (MAR) and lives at the periphery of aggregates of its well-known congeneric
R. exoculata Williams and Rona 1986. Contrasting with the very dense and mobile clusters
formed by R. exoculata, R. chacei lives in small groups of several individuals that are not
very mobile. Although devoid of the characteristic hypertrophied cephalothorax of R. exoculata,
which harbors the ectosymbionts, a microbial community has also been reported in the
cephalothorax of R. chacei. Previous data on morphology, behavior and isotopic values indicate
a diet based on a combination of feeding on its epibiotic bacteria and scavenging or
occasional predation. In this study, our objective was to describe, for the first time, the distribution,
morphology and phylogeny of the microbial communities associated with R. chacei.
This species is significantly less studied than R. exoculata, but nevertheless represents the
only other known example of symbiosis in crustaceans of MAR hydrothermal vent sites.
Microbial communities have been observed at the same locations as in R. exoculata
(mouthparts, branchiostegites and digestive tract). However, in R. chacei, the surfaces
occupied by the bacteria are smaller. The main lineages are affiliated to Epsilon and Gammaproteobacteria
in the cephalothorax and to Deferribacteres, Mollicutes, Epsilon and
Gammaproteobacteria in the digestive tract. Comparison with the well-described bacterial
communities of R. exoculata and hypotheses about the role of these communities in R. chacei
are discussed.
}, doi = {10.1371/journal.pone.0206084}, url = {http://dx.plos.org/10.1371/journal.pone.0206084}, author = {Apremont, Vincent and Cambon-Bonavita, Marie-Anne and Cueff-Gauchard, Val{\'e}rie and Fran{\c c}ois, David and Pradillon, Florence and Laure Corbari and Magali Zbinden}, editor = {Kuo, Chih-Horng} } @article {4165, title = {Biogeographical distribution of Rimicaris exoculata resident gut epibiont communities along the Mid-Atlantic Ridge hydrothermal vent sites.}, journal = {FEMS Microbiol Ecol}, volume = {91}, year = {2015}, month = {2015 Oct}, abstract = {

Rimicaris exoculata is a deep-sea hydrothermal vent shrimp whose enlarged gill chamber houses a complex trophic epibiotic community. Its gut harbours an autochthonous and distinct microbial community. This species dominates hydrothermal ecosystem megafauna along the Mid-Atlantic Ridge, regardless of contrasting geochemical conditions prevailing in them. Here, the resident gut epibiont community at four contrasted hydrothermal vent sites (Rainbow, TAG, Logatchev and Ashadze) was analysed and compiled with previous data to evaluate the possible influence of site location, using 16S rRNA surveys and microscopic observations (transmission electron microscopy, scanning electron microscopy and fluorescence in situ hybridization analyses). Filamentous epibionts inserted between the epithelial cell microvilli were observed on all examined samples. Results confirmed resident gut community affiliation to Deferribacteres, Mollicutes, Epsilonproteobacteria and to a lesser extent Gammaproteobacteria lineages. Still a single Deferribacteres phylotype was retrieved at all sites. Four Mollicutes-related operational taxonomic units were distinguished, one being only identified on Rainbow specimens. The topology of ribotype median-joining networks illustrated a community diversification possibly following demographic expansions, suggesting a more ancient evolutionary history and/or a larger effective population size at Rainbow. Finally, the gill chamber community distribution was also analysed through ribotype networks based on sequences from R. exoculata collected at the Rainbow, Snake Pit, TAG, Logatchev and Ashadze sites. Results allow the refining of hypotheses on the epibiont role and transmission pathways.

}, issn = {1574-6941}, doi = {10.1093/femsec/fiv101}, author = {Durand, Lucile and Roumagnac, Marie and Cueff-Gauchard, Val{\'e}rie and Jan, Cyrielle and Guri, Mathieu and Tessier, Claire and Haond, Marine and Crassous, Philippe and Magali Zbinden and Arnaud-Haond, Sophie and Cambon-Bonavita, Marie-Anne} }