Mytilus edulis and Styela clava assimilate picophytoplankton carbon through feces and pseudofeces ingestion

TitleMytilus edulis and Styela clava assimilate picophytoplankton carbon through feces and pseudofeces ingestion
Publication TypeJournal Article
Year of Publication2021
AuthorsSonier, R, Comeau, LA, Tremblay, R, Olivier, F, Meziane, T, Genard, B
JournalAquaculture
Volume531
Pagination735868
Date PublishedJan-01-2021
ISSN00448486
Abstract

Picophytoplankton(PPP)maycontributetothebulkofprimaryproductioninnutrient-richmarineecosystems.Inthisstudy,wequantifiedthecapacityofbluemussels(Mytilusedulis)andclubbedtunicates(Styelaclava)toexploitPPP.Inthewater,weintroducedPPPcellsthatwereisotopicallylabelledwith13Candusingthesameenrichment approach, we measured the secondary transfer (recycling) of carbon via the assimilation of pseu-dofeces and feces. Results show that bothM. edulisandS. clavaassimilate PPP carbon by ingesting PPP cellsdirectly from water. In addition, PPP assimilation rates were similar in both species. Most interesting was ourobservationthatbothspecies assimilatedPPPcarboncontainedinpseudofecesandfeces,includinglargefecalpelletsproducedbyS.clava.Weconcludethatwithinculturedandinvasivefilterfeeders,PPPcarbonisrecycledvia ingestion of feces and pseudofeces among individuals growing in close proximity. In aquaculture settings,cultured bivalves andfoulingtunicates mayprovide anecological service byremovingexcess PPP innutrient-rich systems via directand secondaryingestion

URLhttps://linkinghub.elsevier.com/retrieve/pii/S0044848620305779
DOI10.1016/j.aquaculture.2020.735868
Short TitleAquaculture
Catégorie HCERES
ACL - Peer-reviewed articles
Publication coopération et recherche SUD
Non