FN Archimer Export Format
PT J
TI Ambient flow velocity and resulting clearance rates of the terebellid polychaete Lanice conchilega (Pallas, 1766)
BT 
AF DENIS, L
   DESROY, Nicolas
   ROPERT, Michel
AS 1:1;2:2;3:2;
FF 1:;2:PDG-DOP-LER-LERFBN;3:PDG-DOP-LER-LERN;
C1 Univ Sci & Technol Lille, Stn Marine Wimereux, CNRRS FRE 2816, ELICO, F-62930 Wimereux, France.
   IFREMER, Lab Environm & Res Normandie, F-14540 Port En Bessin, France.
C2 UNIV LILLE, FRANCE
   IFREMER, FRANCE
SI SAINT MALO
   PORT-EN-BESSIN
SE PDG-DOP-LER-LERFBN
   PDG-DOP-LER-LERN
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-univ-france
IF 2.204
TC 9
UR https://archimer.ifremer.fr/doc/2007/publication-3418.pdf
LA English
DT Article
DE ;Recirculating flume;Feeding activity;Terebellidea;Polychaetes;Clearance rate;Lanice conchilega
AB A laboratory flume study was conducted to determine the effect of flow velocity on clearance rates of the Polychaeta Terebellidea Lanice conchilega (Pallas, 1966). Using sets of 75 individuals collected along the east coast of the English Channel, we measured clearance rates at five flow velocities of approximate to 4, 9, 15, 22 and 27 cm s(-1) with a culture of the diatom Chaetoceros calcitrans as food source. During each control (without polychaetes) or clearance (with Lanice conchilega) experiment, in vivo fluorescence was continuously monitored. Further HPLC analysis confirmed the sediment resuspension for the highest flow velocities tested, indicating the need for 'corrections' from control experiments. The global pattern resulted in a dome-shaped curve, with a corrected clearance rate per individual increasing with flow velocity from an average value of 0.091 +/- 0.041 L h(-1) gDW(-1) at 4 cm s(-1) up to a maximal value of0.171 +/- 0.046 L h(-1) ind(-1) at 15 cm s(-1) and decreasing for higher flow velocity (0.063 +/- 0.029 L h(-1) ind(-1) at 27 cm s(-1)). When non-nalised to average Dry Weight (DW), the clearance rates varied in a wider range, with maximal clearance rates of up to 0.749 L h(-1) gDW(-1) and a marked dome-shaped structure for small individuals (11.9 +/- 5.4 mg Ash Free Dry Weight), whereas larger individuals (up to 30 mg AFDW) showed maximal clearance rates of around 0.400 L h(-1) gDW(-1). Our results indicate the need to take flow velocity into account in estimating the ecological impact of filter-feeding polychactes on available food, as large budget underestimates may arise from clearance rates measured in non-controlled flow velocity. (C) 2007 Elsevier B.V. All rights reserved.
PY 2007
PD OCT
SO Journal of Sea Research
SN 1385-1101
PU Elsevier
VL 58
IS 3
UT 000250647200004
BP 209
EP 219
DI 10.1016/j.seares.2007.03.005
ID 3418
ER

EF