Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges

Clearance rate (CR) measurements in Mytilus galloprovincialis were determined over 16 experiments in which the mussels were exposed to diets characterized by variable chlorophyll content (0.28–104.88 µg Chla L–1) in order to: (1) establish the lower trigger level and the saturation reduction, (2) el...

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Hlavní autoři:	Filgueira, R, Fernández-Reiriz, MJ, Labarta, U
Médium:	info:eu-repo/semantics/article
Jazyk:	eng
Vydáno:	Iniversidad Autónoma de Baja California 2009
Témata:	Mytilus galloprovincialis clearance rate chlorophyll seston quantity and quality tasa de aclaramiento clorofila cantidad y calidad del seston
On-line přístup:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1645
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id	repositorioinstitucional-20.500.12930-7428
record_format	dspace
spelling	repositorioinstitucional-20.500.12930-74282023-05-09T14:30:51Z Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges Tasa de aclaramiento del mejillón Mytilus galloprovincialis. I. Respuesta a intervalos extremos de clorofila Filgueira, R Fernández-Reiriz, MJ Labarta, U Mytilus galloprovincialis clearance rate chlorophyll seston quantity and quality Mytilus galloprovincialis tasa de aclaramiento clorofila cantidad y calidad del seston Clearance rate (CR) measurements in Mytilus galloprovincialis were determined over 16 experiments in which the mussels were exposed to diets characterized by variable chlorophyll content (0.28–104.88 µg Chla L–1) in order to: (1) establish the lower trigger level and the saturation reduction, (2) elucidate whether these thresholds were controlled by an on/off switch or by a progressive response, and (3) determine whether the experimental time exerted an effect on the CR measurement under extreme conditions, quantified in terms of chlorophyll content. The results demonstrated that time exerted a significant effect on CR, which varied throughout the experiment in different diets. The CR response differed fundamentally in the significant reduction of CR after prolonged exposure to low and high chlorophyll-content diets compared with the medium ones. Taking into account the data from the sixth hour onwards, a sharp lower trigger level threshold was established at 2.08 µg Chla L–1, showing an on/off CR response. The threshold for saturation reduction was about 26.91 µg Chla L–1 and showed a progressive response to chlorophyll concentration.  Se realizaron 16 experimentos en los que se determinó la tasa de aclaramiento (TA) en Mytilus galloprovincialis sometido a dietas con distinto contenido de clorofila (0.28–104.88 µg Chla L–1) con objeto de: (1) establecer su umbral de activación y de saturación, (2) dilucidar si estos umbrales están regidos por una respuesta de tipo encendido/apagado o bien por una respuesta progresiva, y (3) determinar el efecto del tiempo de experimentación en la medida de la TA en condiciones extremas, cuantificadas en términos de contenido en clorofila. Los resultados del presente trabajo pusieron de manifiesto que el tiempo de experimentación ejerce un efecto significativo sobre el comportamiento de la TA, la cual varió a lo largo del experimento con diferentes dietas. La respuesta de la TA difirió fundamentalmente en su reducción significativa tras de una exposición prolongada a dietas con alto o bajo contenido de clorofila en comparación con dietas con contenido medio. Teniendo en cuenta los datos a partir de la sexta hora de experimentación, se observó un abrupto umbral de activación a una concentración de clorofila de 2.08 µg L–1, mostrando una respuesta de tipo encendido/apagado. En el caso del umbral de saturación, la concentración de clorofila a partir de la cual se apreció una reducción de la TA se situó en torno a 26.91 µg Chla L–1, mostrando una reducción progresiva con la concentración de clorofila de la dieta. 2009-12-08 2021-06-03T03:55:17Z 2021-06-03T03:55:17Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1645 10.7773/cm.v35i4.1645 https://hdl.handle.net/20.500.12930/7428 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1645/1786 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 35 No. 4 (2009); 405-417 Ciencias Marinas; Vol. 35 Núm. 4 (2009); 405-417 2395-9053 0185-3880
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	Mytilus galloprovincialis clearance rate chlorophyll seston quantity and quality Mytilus galloprovincialis tasa de aclaramiento clorofila cantidad y calidad del seston
spellingShingle	Mytilus galloprovincialis clearance rate chlorophyll seston quantity and quality Mytilus galloprovincialis tasa de aclaramiento clorofila cantidad y calidad del seston Filgueira, R Fernández-Reiriz, MJ Labarta, U Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
description	Clearance rate (CR) measurements in Mytilus galloprovincialis were determined over 16 experiments in which the mussels were exposed to diets characterized by variable chlorophyll content (0.28–104.88 µg Chla L–1) in order to: (1) establish the lower trigger level and the saturation reduction, (2) elucidate whether these thresholds were controlled by an on/off switch or by a progressive response, and (3) determine whether the experimental time exerted an effect on the CR measurement under extreme conditions, quantified in terms of chlorophyll content. The results demonstrated that time exerted a significant effect on CR, which varied throughout the experiment in different diets. The CR response differed fundamentally in the significant reduction of CR after prolonged exposure to low and high chlorophyll-content diets compared with the medium ones. Taking into account the data from the sixth hour onwards, a sharp lower trigger level threshold was established at 2.08 µg Chla L–1, showing an on/off CR response. The threshold for saturation reduction was about 26.91 µg Chla L–1 and showed a progressive response to chlorophyll concentration.
format	info:eu-repo/semantics/article
author	Filgueira, R Fernández-Reiriz, MJ Labarta, U
author_facet	Filgueira, R Fernández-Reiriz, MJ Labarta, U
author_sort	Filgueira, R
title	Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
title_short	Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
title_full	Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
title_fullStr	Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
title_full_unstemmed	Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges
title_sort	clearance rate of the mussel mytilus galloprovincialis. i. response to extreme chlorophyll ranges
publisher	Iniversidad Autónoma de Baja California
publishDate	2009
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1645
_version_	1792610096651436032

Clearance rate of the mussel Mytilus galloprovincialis. I. Response to extreme chlorophyll ranges

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