Influence of temperature, oxygen and salinity on the metabolism of the European sea bass

Claireaux, Guy; Lagardère, Jean-Paul

doi:10.1016/s1385-1101(99)00019-2

Cited by 258 publications

(224 citation statements)

References 32 publications

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“…By performing the study at 22°C, which is in the upper range of the temperature preferendum for sea bass (Claireaux and Lagardere, 1999), it is possible that at lower water temperatures V s could increase during swimming. Another concern is that fish only swam to 2·BL·s -1 and this resulted in a relatively small increase in Q (38%).…”

Section: E Sandblom and Othersmentioning

confidence: 99%

Cardiac preload and venous return in swimming sea bass (Dicentrarchus labraxL.)

Sandblom

Farrell

Altimiras

et al. 2005

Journal of Experimental Biology

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SUMMARY Cardiac preload (central venous pressure, Pcv), mean circulatory filling pressure (MCFP), dorsal aortic blood pressure(Pda) and relative cardiac output(Q̇) were measured in sea bass(Dicentrarchus labrax) at rest and while swimming at 1 and 2 BL s-1. MCFP, an index of venous capacitance and the upstream venous pressure driving the return of venous blood to the heart, was measured as the plateau in Pcv during ventral aortic occlusion. Compared with resting values, swimming at 1 and 2 BLs-1 increased Q̇ (by 15±1.5 and 38±6.5%, respectively), Pcv (from 0.11±0.01 kPa to 0.12±0.01 and 0.16±0.02 kPa,respectively), MCFP (from 0.27±0.02 kPa to 0.31±0.02 and 0.40±0.04 kPa, respectively) and the calculated pressure gradient for venous return (ΔPv, from 0.16±0.01 kPa to 0.18±0.02 and 0.24±0.02 kPa, respectively), but not Pda. In spite of an increased preload, the increase in Q̇ was exclusively mediated by an increased heart rate (fh, from 80±4 beats min-1 to 88±4 and 103±3 beats min-1,respectively), and stroke volume (Vs) remained unchanged. Prazosin treatment (1 mg kg-1Mb) abolished pressure and flow changes during swimming at 1 BL s-1, but not 2 BL s-1, indicating that other control systems besides an α-adrenoceptor control are involved. This study is the first to address the control of venous capacitance in swimming fish. It questions the generality that increased Q̇ during swimming is regulated primarily through Vs and shows that an increased cardiac filling pressure does not necessarily lead to an increased Vs in fish, but may instead compensate for a reduced cardiac filling time.

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Section: E Sandblom and Othersmentioning

confidence: 99%

Cardiac preload and venous return in swimming sea bass (Dicentrarchus labraxL.)

Sandblom

Farrell

Altimiras

et al. 2005

Journal of Experimental Biology

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“…Again, however, the exact interpretation of how aerobic scope is affected by temperature is strongly dependent on whether AAS or FAS is used to represent aerobic scope (Clark et al 2013). Hypoxia can also have a strong effect on aerobic scope by limiting oxygen supply and reducing MMR (Claireaux and Lagardère 1999). Given the importance of understanding how body size and environmental conditions interact to affect responses to climate change (Lefevre et al 2017;Lindmark et al 2018;Pauly and Cheung 2018), a consideration of how to best quantify changes in aerobic scope due to these factors is clearly warranted.…”

Section: Introductionmentioning

confidence: 99%

Exploring key issues of aerobic scope interpretation in ectotherms: absolute versus factorial

Halsey

Killen

Clark

et al. 2018

Rev Fish Biol Fisheries

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Aerobic scope represents an animal's capacity to increase its aerobic metabolic rate above maintenance levels (i.e. the difference between standard (SMR) and maximum (MMR) metabolic rates). Aerobic scope data can be presented in absolute or factorial terms (AAS or FAS, respectively). However, the robustness of these calculations to noise or variability in measures of metabolic rate can influence subsequent interpretations of patterns in the data. We explored this issue using simple models and we compared the predictions from these models to experimental data from the literature. First, we investigated the robustness of aerobic scope calculations as a function of varying SMR when MMR is fixed, and vice versa. While FAS is unexpectedly robust to variability in SMR, even in species with low aerobic scopes, AAS is less sensitive to variation in SMR than is FAS. However, where variation in MMR is the main concern, FAS is more robust than AAS. Our findings highlight the equal importance of minimising variability in MMR, rather than just the variability in SMR, to obtain robust aerobic scope estimates. Second, we analysed metabolic rate accounting for locomotor speed and body mass for swimming fish. The interactions among these factors in relation to AAS and FAS are complex and the appropriate metric is dependent on the specific ecophysiological context of the research question. We conclude with qualified recommendations for using and interpreting AAS and FAS.

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“…Sonu [41] reported that the effects of beneficial bacteria in an aquaculture system can be explained by various mechanisms such as improvement of water quality, antagonism towards pathogens including competition for adhesion sites, enzymatic contribution to digestion in the host, and stimulation of the host immune response [42]. Grati [43] reported that although sea bass is known as a euryhaline species, and alterations in metabolic rate with varying salinity seem to be small [44], post larvae usually aggregate in brackish waters of shallow tidal lagoons and estuaries [44,45] and then migrate offshore as they grow [46]. Environmental variables, such as water temperature, salinity, and oxygen concentration, are reported as driving factors which may govern the behavioral processes that determine spatial and temporal distribution pattern of this species [44].…”

Section: Resultsmentioning

confidence: 99%

“…Grati [43] reported that although sea bass is known as a euryhaline species, and alterations in metabolic rate with varying salinity seem to be small [44], post larvae usually aggregate in brackish waters of shallow tidal lagoons and estuaries [44,45] and then migrate offshore as they grow [46]. Environmental variables, such as water temperature, salinity, and oxygen concentration, are reported as driving factors which may govern the behavioral processes that determine spatial and temporal distribution pattern of this species [44]. The difference of temperature between the reef site and inshore areas was negligible (around 1-2 °C).…”

Section: Resultsmentioning

confidence: 99%

Effect of European seabass (Dicentrarchus labrax) fry source (Wild, NIOF and GAFRD K21) on its growth performance and physiology

et al. 2018

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THE present study aimed to evaluate the impacts of different sources on the European seabass (D. labrax) fry growth and physiology. One thousand and five hundreds fry from 3 sources were transferred to the lab., the 1st fry group was collected from the wild habitat in El-Meadya region, El-Behira Gov. from the wild fry capture fisheries. The 2nd fry group was 94 (dph) day post hatching produced in the Marine NIOF Hatchery, El-Anfoushy from induced spawning and the 3rd group fry was 94 dph produced in the Marine GAFRD Hatchery from induced spawning. Fry samples were randomly collected to statistically determine the length, weight growth and physiology performances. The comparative effects of European seabass (D. labrax) fry sources (wild and two hatcheries) and their impacts on length and weight growth parameters, total length, standard length, body width, total weight, gutted weight, hepatosomatic and vesrosomatic indexes. The wild collected fry achieved the best significant (P < 0.05) results in all this growth parameters while the NIOF marine hatchery produced fry achieved the best significant (P < 0.05) results in all these physiology parameters. In conclusion, this study explained why fish farmers prefer wild collected European seabass (D. labrax) fry than hatchery produced fry. Egypt marine hatcheries need more efforts and technology transfer to help marine aquaculture and fisheries development, that need ranching and restocking with hatchery produced fry.

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Influence of temperature, oxygen and salinity on the metabolism of the European sea bass

Cited by 258 publications

References 32 publications

Cardiac preload and venous return in swimming sea bass (Dicentrarchus labraxL.)

Cardiac preload and venous return in swimming sea bass (Dicentrarchus labraxL.)

Exploring key issues of aerobic scope interpretation in ectotherms: absolute versus factorial

Effect of European seabass (Dicentrarchus labrax) fry source (Wild, NIOF and GAFRD K21) on its growth performance and physiology

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