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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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