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Auteur (up) Roques, C.; Grousset, E.; Troussellier, M.; Hermet, S.; Le Carrer, J.; Sar, C.; Caro, A. doi  openurl
  Titre A trade-off between mucocytes and bacteriocytes inLoripes orbiculatusgills (Bivalvia, Lucinidae): a mixotrophic adaptation to seasonality and reproductive status in a symbiotic species? Type Article scientifique
  Année 2020 Publication Revue Abrégée Mar. Biol.  
  Volume 167 Numéro 10 Pages 154  
  Mots-Clés bacterial endosymbionts; carbon; chemoautotrophic symbionts; codakia-orbicularis; crassostrea-virginica; life-cycle; loripes-lucinalis; lucinoma-aequizonata; mytilus-edulis; particle processing mechanisms  
  Résumé 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.  
  Auteur institutionnel Thèse  
  Editeur Lieu de Publication Éditeur  
  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 0025-3162 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000576898400001 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2895  
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