FN Archimer Export Format
PT J
TI Xylocythere sarrazinae, a new cytherurid ostracod (Crustacea) from a hydrothermal vent field on the Juan de Fuca Ridge, northeast Pacific Ocean, and its phylogenetic position within Cytheroidea
BT 
AF Tanaka, Hayato
   Lelièvre, Yann
   Yasuhara, Moriaki
AS 1:1;2:2,3;3:4;
FF 1:;2:PDG-REM-EEP-LEP;3:;
C1 Tokyo Sea Life ParkTokyo, Japan
   Ifremer Centre de Bretagne, REM/EEP, Laboratoire Environnement Profond, Plouzane, France
   Département de Sciences BiologiquesUniversité de MontréalMontreal, Canada
   School of Biological Sciences and Swire Institute of Marine ScienceThe University of Hong KongHong Kong, China
C2 TOKYO SEA LIFE PARK, JAPAN
   IFREMER, FRANCE
   UNIV MONTREAL, CANADA
   UNIV HONG KONG, CHINA
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer UPR
   copubli-int-hors-europe
   copubli-sud
IF 1.487
TC 4
UR https://archimer.ifremer.fr/doc/00511/62292/66569.pdf
LA English
DT Article
DE ;Chemosynthetic habitat;Crustacea;Eucytherurinae;Meiofauna;Pore clusters
AB This paper described Xylocythere sarrazinae sp. nov. (Ostracoda: Cytheroidea: Cytheruridae: Eucytherurinae), collected at 2196 m depth from the Grotto hydrothermal edifice (Main Endeavor Field, Juan de Fuca Ridge) in the northeastern Pacific Ocean. This new species was found living in association with Ridgeia piscesae tubeworm assemblages. It is the second representative of Xylocythere described from such vents. Xylocythere sarrazinae sp. nov. is easily distinguished from the seven described species of Xylocythere by the surface ornamentations of its carapace, with the most similar species to it being Xylocythere pointillissima Maddocks & Steineck, 1987. However, Xylocythere sarrazinae sp. nov can be distinguished from X. pointillissima based on the following characters: having a subsquare basal capsule outline, a spatulate upper ramus, a flattened distal lobe of the male copulatory organ, and having 15 maxillula branchial plate setae. We found that one specimen of this new species had multiple spherical objects associated with the internal openings of its pore clusters. These objects were quite similar in shape to that of chemoautotrophic bacteria, which were previously reported from the outer surfaces of pore clusters in other Xylocythere species. Finally, we provided a preliminary phylogenetic analysis of this new species based on 18S rRNA gene sequences to determine the phylogenetic position of the subfamily Eucytherurinae within the superfamily Cytheroidea. This analysis revealed that Xylocythere (Eucytherurinae) may be the most ancestral lineage among the Cytheruridae and identified paraphyletic relationships among the three subfamilies within Cytheruridae. This result supported certain previous studies’ conclusions based on morphology and fossil records. 
PY 2019
PD DEC
SO Marine Biodiversity
SN 1867-1616
PU Springer Science and Business Media LLC
VL 49
IS 6
UT 000501242900008
BP 2571
EP 2586
DI 10.1007/s12526-019-00987-3
ID 62292
ER

EF