Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality
Relative retention efficiency (Er%) of Crassostrea gigas was estimated in the laboratory with 7 diets consisting of algae and silt. Total particulates varied from 1.34 mg/l in natural sea water to 27.65 mg/l in natural sea water enriched with silt. It was also calculated from field experiment to get...
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ftarchimer:oai:archimer.ifremer.fr:21096 2023-05-15T15:57:15+02:00 Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality Barille, Laurent Prou, Jean Heral, Maurice Bougrier, Serge 1992-08 application/pdf https://archimer.ifremer.fr/doc/00100/21096/18721.pdf https://archimer.ifremer.fr/doc/00100/21096/ eng eng https://archimer.ifremer.fr/doc/00100/21096/18721.pdf https://archimer.ifremer.fr/doc/00100/21096/ 1992 Ifremer info:eu-repo/semantics/openAccess restricted use Crassostrea gigas Dietary quality Particle concentration Physiological model Retention efficiency text Report info:eu-repo/semantics/report 1992 ftarchimer 2021-09-23T20:21:24Z Relative retention efficiency (Er%) of Crassostrea gigas was estimated in the laboratory with 7 diets consisting of algae and silt. Total particulates varied from 1.34 mg/l in natural sea water to 27.65 mg/l in natural sea water enriched with silt. It was also calculated from field experiment to get high concentration of seston up to 66 mg/l. It appeared that Crassostrea gigas did not adjust its retention according to the food quality and the gill porosity was controlled by the concentration of particulate matter. In low seston load (1.34 mg/l) the oyster showed no change in retention for particles larger than 3-4 µm (Equivalent Spherical Diameter, ESD) but at the highest concentration (66 mg/l) it could only retain with a maximum efficiency particles larger than 12 µm (ESD). The japanese oyster having a passive response to high concentration, a model where suspended particulate matter was assessed by Particulate Volume, PV, (mm3/1), was deterrnined: Er%=(-12.537e(-0.304*ESD))PV + 100 Report Crassostrea gigas Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Crassostrea gigas Dietary quality Particle concentration Physiological model Retention efficiency |
spellingShingle |
Crassostrea gigas Dietary quality Particle concentration Physiological model Retention efficiency Barille, Laurent Prou, Jean Heral, Maurice Bougrier, Serge Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
topic_facet |
Crassostrea gigas Dietary quality Particle concentration Physiological model Retention efficiency |
description |
Relative retention efficiency (Er%) of Crassostrea gigas was estimated in the laboratory with 7 diets consisting of algae and silt. Total particulates varied from 1.34 mg/l in natural sea water to 27.65 mg/l in natural sea water enriched with silt. It was also calculated from field experiment to get high concentration of seston up to 66 mg/l. It appeared that Crassostrea gigas did not adjust its retention according to the food quality and the gill porosity was controlled by the concentration of particulate matter. In low seston load (1.34 mg/l) the oyster showed no change in retention for particles larger than 3-4 µm (Equivalent Spherical Diameter, ESD) but at the highest concentration (66 mg/l) it could only retain with a maximum efficiency particles larger than 12 µm (ESD). The japanese oyster having a passive response to high concentration, a model where suspended particulate matter was assessed by Particulate Volume, PV, (mm3/1), was deterrnined: Er%=(-12.537e(-0.304*ESD))PV + 100 |
format |
Report |
author |
Barille, Laurent Prou, Jean Heral, Maurice Bougrier, Serge |
author_facet |
Barille, Laurent Prou, Jean Heral, Maurice Bougrier, Serge |
author_sort |
Barille, Laurent |
title |
Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
title_short |
Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
title_full |
Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
title_fullStr |
Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
title_full_unstemmed |
Retention efficiency in oyster Crassostrea gigas exposed to variable food quantity and quality |
title_sort |
retention efficiency in oyster crassostrea gigas exposed to variable food quantity and quality |
publishDate |
1992 |
url |
https://archimer.ifremer.fr/doc/00100/21096/18721.pdf https://archimer.ifremer.fr/doc/00100/21096/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
https://archimer.ifremer.fr/doc/00100/21096/18721.pdf https://archimer.ifremer.fr/doc/00100/21096/ |
op_rights |
1992 Ifremer info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766392905757360128 |