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| Registros recuperados: 13 | |
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| Финенко, Г. А.; Романова, З. А.; Аболмасова, Г. И.; Аннинский, Б. Е.; Губарева, Е. С.; Бат, Л.; Кидейс, А.. |
| Изучен эффект условий питания (концентрации пищи, объема экспериментальных сосудов) на скорость потребления, фильтруемый объем и время переваривания у лопастного гребневика-вселенца в Черное море Mnemiopsis leidyi. Установлено, что связь между скоростью питания (I, экз экз -1 ) и концентрацией пищи (С, экз л -1) описывается уравнением прямой 1 = 0.374 С + 1.731 с высоким коэффициентом детерминации 0.869. Объем воды, освобожденный животным от пищевых организмов в единицу времени, практически остается постоянным в широком диапазоне исследованных концентраций, составляя в среднем 0.294±0.076 л г -1 сырой массы час -1 у животных длиной 20 - 30 мм. У крупных гребневиков 40-50 мм он вдвое ниже-0.129±0.038 лг -1 сырой массы час -1. В диапазоне исследованных... |
| Tipo: Journal Contribution |
Palavras-chave: Mnemiopsis leidyi; Скорость питания; Интенсивность фильтрации; Время переваривания; Черное море; Ingestion rate; Clearance rate; Digestion time; Ctenophore Ingestion Digestion Digestion http://aims.fao.org/aos/agrovoc/c_2271. |
| Ano: 2005 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/195 |
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| Финенко, Г. А.; Павловская, Т. В.; Романова, З. А.; Аболмасова, Г. И.; Дацык, Н. А.. |
| Изучено влияние условий питания (вид и концентрация пищи, размер хищника и жертвы, количество жертв в кишечнике) на время переваривания и скорость потребления пищи у личинок лопастного гребневика Mnemiopsis leidyi. Время переваривания у личинок длиной 0.5 – 9.5 мм при потреблении пищевых объектов 9 видов, различающихся по размерам более чем на порядок (от 0.15 – науплии акарции до 1.8 мм – личинки креветок), зависело от вида пищи и размеров личинок, снижаясь по мере роста личинок и уменьшения размера жертв. Связь между скоростью питания (R, экз.–1) и концентрацией пищи (N, экз. л–1) описывалась линейным уравнением R = 0.04N – 0.71 и R = 0.02N + 2.4 при потреблении науплий Acartia sp. 5 и 9 мм личинками мнемиопсиса соответственно. В диапазоне... |
| Tipo: Journal Contribution |
Palavras-chave: Mnemiopsis leidyi; Время переваривания; Микрозоопланктон; Освобождённый объём; Скорость питания; Суточный рацион; Digestion time; Microzooplankton; Clearance rate; Ingestion rate; Feeding rate; Daily ration; Час травлення; Мікрозоопланктон; Звільнений об’єм; Швидкість живлення; Добовий раціон. |
| Ano: 2008 |
URL: http://repository.ibss.org.ua/dspace/handle/99011/822 |
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| Barille, Laurent; Prou, Jean. |
| Ecophysiological experiments conducted in situ in the Bay of Marennes-Oléron during a spring and neap tide cycle in May 1991 , were designed to get a better representation of 2 important components of the energy budget of the Japanese oyster Crassostrea gigas : clearance rate and selection efficiency. The relationships previously established by Raillard et al. ( 1993) are re-evaluated by integrating the effects of high seston loads, typical of tidal effect within estuaries, on the physiological processes. For the clearance rate, the re-evaluated parameterization includes: - a negative effect of turbidity. - a clogging threshold set to 192 mg/l. Selection efficiency parameterizations are modified by incorporating : - a constant inorganic ingestion for... |
| Tipo: Text |
Palavras-chave: Matematical model; Oyster; Crassostrea gigas; Clearance rate; Seclection efficency; Marennes Oleron; Charente Maritime. |
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00102/21299/18913.pdf |
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| Le Moullac, Gilles; Cheize, Marie; Gastineau, Olivier; Daniel, Jean-yves; Le Coz, Jean-rene; Huvet, Arnaud; Moal, Jeanne; Pouvreau, Stephane; Van Wormhoudt, A; Samain, Jean-francois. |
| The purpose of this study is to examine the response of the oyster Crassostrea gigas to sulphide at different biological scales. A first experiment was designed to measure for 20 h the clearance (CR) and oxygen consumption (OC) rates of oysters exposed at different concentrations of sulphide (0, 3, 6, 12, 20, and 40 mu M). The second experiment was carried out to evaluate the metabolic adaptations to chronic sulphide exposure for 10 days by measuring PK and PEPCK enzyme activities, succinate and alanine content, the adenylate energy charge (AEC), and the activity of the electron transport system (ETS)in whole oysters at above 20 mu M. PK and PEPCK mRNAs and enzyme activities have been measured in adductor muscle. When exposed to sulphide above 20 mu M, CR... |
| Tipo: Text |
Palavras-chave: ATP; AEC; Electron transport system; Succcinate; Alanine; Phosphoenolpyruvate carboxykinase; Pyruvate kinase; Oxygen consumption; Clearance rate; Crassostrea gigas; Sulphide; Oyster. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-3924.pdf |
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| Denis, L; Desroy, Nicolas; Ropert, Michel. |
| 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... |
| Tipo: Text |
Palavras-chave: Recirculating flume; Feeding activity; Terebellidea; Polychaetes; Clearance rate; Lanice conchilega. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3418.pdf |
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| Strohmeier, Tore; Strand, Oivind; Alunno-bruscia, Marianne; Duinker, Arne; Cranford, Peter J.. |
| Seasonal variation in blue mussel, Mytilus edulis, retention efficiency (RE) responses to natural seston concentrations were investigated in the Lysefjord, Norway. The smallest particles shown to be effectively retained (100%) were approximately 7 μm and this was observed on only one occasion. The most common response was for RE to progressively increase from small to large particles with maximum RE at 30 to 35 μm (8 of 12 experiments). Temporal changes in the seston size distribution towards a dominance of smaller particles coincided with a decrease in the RE maxima to particles between 7 and 15 μm diameter. The RE of 1 μm and 4 μm diameter particles ranged between 14–64% and 12–86%, respectively, showing that small particles occasionally serve as a... |
| Tipo: Text |
Palavras-chave: Bivalve feeding physiology; Retention efficiency; Clearance rate; Marine ecophysiology; Seston; Suspension feeding; Mytilus edulis. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00054/16509/14024.pdf |
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| François, Cyrille; Haure, Joel; Billy, Jean-christophe; Renault, Tristan. |
| Background The Quality Assurance and Laboratory Standards Committee of the American Society for Veterinary Clinical Pathology and the guidelines of the Clinical and Laboratory Standards Institute provide a framework for establishing reference intervals of physiological parameters in reputedly healthy individuals, humans, and terrestrial animals, respectively. This framework was applied for the first time to the Pacific cupped oyster, Crassostrea gigas. Reference intervals (RIs) would, first, be of interest for research purposes, including pathophysiology studies. RI determination is the first step before considering the use of RIs for field applications by farmers and marine shellfish health services. Objectives The purpose of this study was to propose... |
| Tipo: Text |
Palavras-chave: Bivalvia; Clearance rate; Health; Ostreidae; Oxygen consumption rate; Reference values. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00627/73913/73286.pdf |
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| Pouvreau, Stephane; Bodoy, Alain; Buestel, Dominique. |
| In situ clearance rate (CR) and biodeposition of the black pearl oyster, Pinctada margaritifera, were followed during several field experiments from 1996 to 1998 in the lagoon of Takapoto. Serial measurements of total particulate matter (TPM, mg l(-1)), particulate inorganic matter (PLM, mg l(-1)), and particulate organic matter (POM, mg l(-1)) were related to meteorological conditions, especially wind speed. As a general case, POM and PLM increased with wind speed. Nevertheless, PLM increased faster than POM so that the organic content (OC, %) of the TPM decreased progressively when wind speed increased. These TPM variations induced direct changes in feeding processes of P. margaritifera. CR (l h(-1)) averaged 22 l h(-1) for a pearl oyster of 1 g dry... |
| Tipo: Text |
Palavras-chave: Biodeposition; Clearance rate; Seston; Filter feedings behaviour; Tropical lagoon; Tropical bivalve. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/publication-382.pdf |
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| Registros recuperados: 13 | |
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