FN Archimer Export Format
PT J
TI Contrasting reproductive biology of two hydrothermal gastropods from the Mid-Atlantic Ridge: implications for resilience of vent communities
BT 
AF Marticorena, Julien
   Matabos, Marjolaine
   Sarrazin, Jozee
   Ramirez-Llodra, E.
AS 1:1;2:1;3:1;4:2,3;
FF 1:PDG-REM-EEP-LEP;2:PDG-REM-EEP-LEP;3:PDG-REM-EEP-LEP;4:;
C1 REM/EEP, Ifremer, 29280, Plouzané, France
   Norwegian Institute for Water Research, Gaustadalleen 21, 0349, Oslo, Norway
   REV Ocean, Oksenøyveien 10, 1366, Lysaker, Norway
C2 IFREMER, FRANCE
   NIVA, NORWAY
   REV OCEAN, NORWAY
SI BREST
SE PDG-REM-EEP-LEP
IN WOS Ifremer UPR
   copubli-europe
IF 2.573
TC 6
UR https://archimer.ifremer.fr/doc/00640/75235/75647.pdf
LA English
DT Article
CR MOMARSAT : MONITORING THE MID ATLANTIC RIDGE
   MOMARSAT2015
   MOMARSAT2017
   MOMARSAT2018
BO Pourquoi pas ?
   L'Atalante
AB The recovery of populations and their ability to recolonise a disturbed habitat is mainly dependent on their reproductive biology (e.g., fecundity, frequency of reproduction, and time to maturity) and recruitment success. To assess recolonisation processes and connectivity of vent communities, and infer their resilience to natural and anthropogenic disturbances, we studied the life-history traits of two dominant species of vent gastropods from the northern Mid-Atlantic Ridge: Protolira valvatoides and Pseudorimula midatlantica. Gonad morphology, gametogenesis, and reproductive outputs related to shell length were described using histological analyses, and population structure was assessed from individuals’ size–frequency distributions. Samples were collected at different locations of the Montségur and Eiffel Tower edifices (Lucky Strike vent field) in April 2015, July 2017, and August 2018 to inform on spatial and temporal variations of their reproductive outputs and demography. All stages of oocyte development were found in the gonads of both species, suggesting a continuous gametogenesis and asynchronous reproduction. However, the two species showed contrasting reproductive strategies. Indeed, while P. midatlantica is gonochoric with a fecundity of up to 327 mature oocytes, P. valvatoides is hermaphrodite with an extremely low fecundity including a maximum of eight vitellogenic oocytes. Maximum oocyte size was 176 µm for P. midatlantica and 272 µm for P. valvatoides. We infer from previous knowledge and our results that both species exhibit a lecithotrophic development of larvae. There was no evidence of temporal variability of reproductive traits, but environmental conditions seem to affect gametogenetic maturity and oocyte size of P. midatlantica limpets. Variations in population structure at the edifice scale suggest habitat selection of individuals related to biotic and abiotic factors. 
PY 2020
PD JUN
SO Marine Biology
SN 0025-3162
PU Springer Science and Business Media LLC
VL 167
IS 8
UT 000548856600005
DI 10.1007/s00227-020-03721-x
ID 75235
ER

EF