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Authors Roques, C; Grousset, E; Troussellier, M; Hermet, S; Le Carrer, J; Sar, C; Caro, A
Author Full Name Roques, Cecile; Grousset, Evelyse; Troussellier, Marc; Hermet, Sophie; Le Carrer, Johan; Sar, Chamroeun; Caro, Audrey
Title A trade-off between mucocytes and bacteriocytes inLoripes orbiculatusgills (Bivalvia, Lucinidae): a mixotrophic adaptation to seasonality and reproductive status in a symbiotic species?
Source MARINE BIOLOGY
Language English
Document Type Article
Keywords Plus PARTICLE PROCESSING MECHANISMS; LORIPES-LUCINALIS; CRASSOSTREA-VIRGINICA; MYTILUS-EDULIS; CHEMOAUTOTROPHIC SYMBIONTS; BACTERIAL ENDOSYMBIONTS; LUCINOMA-AEQUIZONATA; CODAKIA-ORBICULARIS; LIFE-CYCLE; CARBON
Abstract In this study, we investigated the composition of the gill tissue relative to the reproductive status of the lucinid clamLoripes orbiculatus(sensus Poli, 1791) according to seasonal as well as biological parameters to provide insights into the physiological variability of this symbiotic bivalve. Temporal variation in population density was also studied. The species was investigated inZostera noltiiseagrass beds in the Thau lagoon (43 degrees 26 ' 52.27 '' N, 3 degrees 39 ' 6.25 '' E) in the south of France in a monthly sampling study from May 2013 to July 2015. A total of 257 individual adults of different sizes were analysed according to water temperature and salinity variations. The findings revealed a very stableLoripesdensity over time, with one single reproductive period during late spring/early summer. We also found that bacteriocytes and mucocytes in the gills were negatively correlated and highly variable in their respective proportions. Bacteriocytes remained dominant during cold periods, whereas mucocytes appeared mainly in the gills of large individuals when the water temperature increased in the spring. As mucocytes were also related with gonadal maturation, we hypothesize that these may allow the host to increase the proportion of heterotrophy in its nutrition during spring primary production to face the metabolic demands required for reproduction. It is possible that mucocytes may also be involved in host immunity.
Author Address [Roques, Cecile; Grousset, Evelyse; Troussellier, Marc; Hermet, Sophie; Caro, Audrey] Univ Montpellier, Marine Biodivers Exploitat & Conservat MARBEC, CNRS, IFREMER,IRD, Montpellier, France; [Le Carrer, Johan] Martinique Nat Marine Pk, Fort De France, Martinique, France; [Sar, Chamroeun] Montpellier Ressources Imagerie, Montpellier, France
Reprint Address Caro, A (corresponding author), Univ Montpellier, Marine Biodivers Exploitat & Conservat MARBEC, CNRS, IFREMER,IRD, Montpellier, France.
E-mail Address audrey.caro@umontpellier.fr
Funding Agency and Grant Number Coastal Marine Ecosystems research unit (ECOSYM); Marine Biodiversity Exploitation and Conservation research unit (MARBEC)
Funding Text This study was partially funded by the Coastal Marine Ecosystems research unit (ECOSYM) (recurring annual grant) and the Marine Biodiversity Exploitation and Conservation research unit (MARBEC). We would like to thank the MARBEC Microbex and histological platforms for their technical support, the Montpellier Ressources Imagerie MRI platform for image analysis, Elise Bradbury for the editorial review of the manuscript, and Matthijs van der Geest for his useful input during discussions.
Publisher SPRINGER HEIDELBERG
Publisher City HEIDELBERG
Publisher Address TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY
ISSN 0025-3162
29-Character Source Abbreviation MAR BIOL
ISO Source Abbreviation Mar. Biol.
Publication Date SEP 30
Year Published 2020
Volume 167
Issue 10
Article Number 154
Digital Object Identifier (DOI) 10.1007/s00227-020-03768-w
Page Count 16
Web of Science Category Marine & Freshwater Biology
Subject Category Marine & Freshwater Biology
Document Delivery Number NZ2AV
Unique Article Identifier WOS:000576898400001
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