FN Archimer Export Format
PT J
TI Classical and computed tomographic anatomical analyses in a not-so-cryptic Alviniconcha species complex from hydrothermal vents in the SW Pacific
BT 
AF Laming, Sven
   Hourdez, Stéphane
   Cambon-Bonavita, Marie-Anne
   Pradillon, Florence
AS 1:1,2;2:3;3:2;4:1;
FF 1:PDG-REM-EEP-LEP;2:;3:PDG-REM-EEP-LMEE;4:PDG-REM-EEP-LEP;
C1 Ifremer, Laboratoire Environnement Profond (REM/EEP/LEP), Plouzané, France
   Ifremer, Univ Brest, CNRS, UMR6197, Laboratoire de Microbiologie des Environnements Extrêmes (REM/EEP/LM2E), Plouzané, France
   UMR 8222 CNRS-Sorbonne Université, Laboratoire d’écogéochimie des environnements benthiques (LECOB), Banyuls-sur-Mer, France
C2 IFREMER, FRANCE
   IFREMER, FRANCE
   UNIV SORBONNE, FRANCE
SI BREST
SE PDG-REM-EEP-LEP
   PDG-REM-EEP-LMEE
UM BEEP-LM2E
IN WOS Ifremer UPR
   WOS Ifremer UMR
   DOAJ
   copubli-france
   copubli-univ-france
IF 3.172
TC 11
UR https://archimer.ifremer.fr/doc/00628/74048/73459.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73460.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73461.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73462.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73463.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73464.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73466.pdf
   https://archimer.ifremer.fr/doc/00628/74048/73467.pdf
LA English
DT Article
CR FUTUNA 3
BO L'Atalante
DE ;Deep sea;Chemosymbiotic;Periostracum;Gastropod;Habitat partitioning;Computed tomography;Histology;Taxonomy;3D model
AB The chemosymbiotic gastropod Alviniconcha (Provannidae), first described in 1988, is one of the most emblematic hydrothermal-vent taxa described from the Central Indian Ridge and the Southwest (SW) Pacific. Symbiotic bacteria found in the gill of Alviniconcha are thought to be their principal source of nutrition. In the SW Pacific, species distributions for A. kojimai, A. boucheti – and to a lesser extent A. strummeri – overlap. While Alviniconcha species do not appear to truly co-exist in these highly energetic but spatially limited habitats, certain species regularly co-occur within a single vent field and in rare instances, the same edifice. Past research suggests that SW-Pacific Alviniconcha species might aggregate around fluids with distinct geothermal profiles. These small-scale distribution patterns have been attributed to differences in their symbiont assemblages or host physiologies. However, little is known about the anatomy of most Alviniconcha species, beyond that detailed for the type species Alviniconcha hessleri, whose geographic range does not overlap with other congeners. In fact, species within this genus are currently described as cryptic, despite the absence of any comparative morphological studies to assess this. To test whether the genus is genuinely cryptic and identify any functional differences in host anatomy that might also mediate habitat partitioning in SW Pacific species, the current study examined the morphoanatomy of A. kojimai, A. boucheti and A. strummeri from the Fatu Kapa vent field, an area of hydrothermal activity recently discovered north of the Lau Basin near the Wallis and Futuna Islands and the only known example where all three species occur within adjacent vent fields. A combination of detailed dissections, histology and X-ray computed tomography demonstrate that A. kojimai, A. strummeri and A. boucheti are readily identifiable based on shell morphology and ornamentation alone, and therefore not truly cryptic. These traits provide a rapid and reliable means for species identification. However, aside from some subtle differences in radular morphology, these species of Alviniconcha exhibit conserved anatomical features, providing no evidence that functional host anatomy is implicated in habitat partitioning. This provides support for the current belief that host-species distributions are probably governed by symbiont-mediated physiological factors. 
PY 2020
PD MAY
SO Frontiers In Zoology
SN 1742-9994
PU Springer Science and Business Media LLC
VL 17
IS 1
UT 000533877600001
DI 10.1186/s12983-020-00357-x
ID 74048
ER

EF