FN Archimer Export Format
PT J
TI Novel observations underlying the fast growth of suspension-feeding shellfish in turbid environments: Mytilus edulis
BT 
AF HAWKINS, AJS
   SMITH, RFM
   BAYNE, BL
   HERAL, Maurice
AS 1:1;2:1;3:1;4:2;
FF 1:;2:;3:;4:;
C1 Plymouth Marine Laboratory, Natural Environment Research Council, West Hoe, Plymouth PU 3DH, United Kingdom
   IFREMER, LABEIM, F-17390 LA TREMBLADE, FRANCE.
C2 PML, UK
   IFREMER, FRANCE
IN WOS Ifremer jusqu'en 2018
IF 1.928
TC 179
UR https://archimer.ifremer.fr/doc/00040/15080/12419.pdf
LA English
DT Article
DE ;seston composition;tidal variation;mussel;Mytilus edulis;feeding behaviour;selection efficiency;absorption efficiency;net energy balance
AB For the tirst time for any benthic filter-feeder, this study documents each component process of nutrient acquisition through natural tidal variations of food availabillty. The organic content of seston available during both neap and spring tides in the bay of Marennes-Oléron. France, decreased from 28 to 8 % with mcreasing seston concentration from 10 to about 90 mg total particulate mass 1(1). Throughout this tidal variation, the blue mussel Mylilus edulis L. cleared more water of particles as seston availability increased. Rejection of fillered material as pseudofaeces prior to ingestion remained a constant fraction of about 0 .93 x the mass of filtered material, so that ingestion rate showed no signs of stabilising at even the highest food availabillties. We confirm that M. edulis may preferentially reject inorganic matter with pseudofaeces. More significant was the novel observation that the net selection efficiency with which filtered organics were selectively retained for ingestion increased rapidly with the rate at which seston was filtered, this increase being faster for seston of higher organic content. The result was that the organic content of ingested matter was enriched by up to 5 times the organic content of filtered particles. Further, net absorption efficiency for ingested organics varied in strong positive relation with the organic content of ingested material. Therefore, rates of organic absorption increased with seston filtration rate, and net energy balance increased despite the decreasing organic content of particles available at higher concentrations. These collective find ings demonstrate continuous interrelated changes in feeding physiology that help to maintain rates of nutrient acquisition independent of short-term fluctuations in seston composition.
PY 1996
PD FEB
SO Marine Ecology Progress Series
SN 0171-8630
PU Inter-research
VL 131
IS 1-3
UT A1996TZ66300015
BP 179
EP 190
DI 10.3354/meps131179
ID 15080
ER

EF