scholarly journals Fuel, fasting, fear: routine metabolic rate and food deprivation exert synergistic effects on risk-taking in individual juvenile European sea bass

2011 ◽  
Vol 80 (5) ◽  
pp. 1024-1033 ◽  
Author(s):  
Shaun S. Killen ◽  
Stefano Marras ◽  
David J. McKenzie
Keyword(s):  
Metabolic Rate ◽  
Food Deprivation ◽  
Risk Taking ◽  
Synergistic Effects ◽  
Sea Bass ◽  
Routine Metabolic Rate ◽  
European Sea Bass

A relationship between metabolic rate and risk-taking behaviour is revealed during hypoxia in juvenile European sea bass

2011 ◽  
Vol 26 (1) ◽  
pp. 134-143 ◽  
Author(s):  
Shaun S. Killen ◽  
Stefano Marras ◽  
Mary R. Ryan ◽  
Paolo Domenici ◽  
David J. McKenzie
Keyword(s):  
Metabolic Rate ◽  
Risk Taking ◽  
Sea Bass ◽  
European Sea Bass

scholarly journals Transgenerational effects decrease larval resilience to ocean acidification and warming but juvenile European sea bass could benefit from higher temperatures in the NE Atlantic

2021 ◽  
Author(s):  
Sarah Howald ◽  
Marta Moyano ◽  
Amélie Crespel ◽  
Louise Cominassi ◽  
Guy Claireaux ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Ocean Acidification ◽  
Larval Growth ◽  
Sea Bass ◽  
Standard Metabolic Rate ◽  
Routine Metabolic Rate ◽  
Juvenile Growth ◽  
European Sea Bass ◽  
Larval Size ◽  
Size At Metamorphosis

The aim of this study was to investigate the effect of ocean acidification (OA) and warming (OW) as well as the transgenerational effect of OA on larval and juvenile growth and metabolism of a large economically important fish species with a long generation time. Therefore we incubated European sea bass from Brittany (France) for two generations (>5 years in total) under current and predicted OA conditions (PCO2: 650 and 1700 μatm). In the F1 generation both OA condition were crossed with OW (temperature: 15-18 °C and 20-23 °C). We found that OA alone did not affect larval or juvenile growth and OW increased developmental time and growth rates, but OAW decreased larval size at metamorphosis. Larval routine metabolic rate (RMR) and juvenile standard metabolic rate (SMR) were significantly lower in cold compared to warm conditioned fish and also lower in F0 compared to F1 fish. We did not find any effect of OA on RMR or SMR. Juvenile PO2crit was not affected by OA, OW or OAW in both generations. We discuss the potential underlying mechanisms resulting in beneficial effects of OW on F1 larval growth and RMR and in resilience of F0 and F1 larvae and juveniles to OA, but on the other hand resulting in vulnerability of F1, but not F0 larvae to OAW. With regard to the ecological perspective, we conclude that recruitment of larvae and early juveniles to nursery areas might decrease under OAW conditions but individuals reaching juvenile phase might benefit from increased performance at higher temperatures.

scholarly journals An investigation of links between metabolic rate and feed efficiency in European sea bass Dicentrarchus labrax

2021 ◽  
Author(s):  
Charles Rodde ◽  
Hugues de Verdal ◽  
Marc Vandeputte ◽  
François Allal ◽  
Julie Nati ◽  
...  
Keyword(s):  
Body Weight ◽  
Metabolic Rate ◽  
Feed Efficiency ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Effect Of Temperature ◽  
Routine Metabolic Rate ◽  
Intermittent Flow ◽  
European Sea Bass ◽  
Ad Libitum

Abstract Feed efficiency (FE) is the amount of body weight gain for a given feed intake. Improving FE through selective breeding is key for sustainable finfish aquaculture but its evaluation at individual level is technically challenging. We therefore investigated whether individual routine metabolic rate (RMR) was a predictor of individual FE in the European sea bass Dicentrarchus labrax, a major species in European mariculture. The European sea bass has three genetically distinct populations across its geographical range, namely Atlantic Ocean (AT), West Mediterranean (WM) and East Mediterranean (EM). We compared FE and RMR of fish from these three populations at 18°C or 24°C. We held 200 fish (62 AT, 66 WM and 72 EM) in individual aquaria and fed them from ad libitum down to fasting. Feed efficiency was assessed for an ad libitum feeding rate and for a fixed restricted ration (1% of metabolic body weight.day -1, with metabolic body weight = body weight 0.8). After being refed 12 weeks in a common tank, individual RMR was measured over 36h by intermittent flow respirometry. There was a significant effect of temperature whereby fish at 18°C had greater mean FE (P < 0.05) and lower RMR (P < 0.001). There was also a significant effect of population, where AT fish had lower FE (P < 0.05) and greater RMR (P < 0.001) than WM and EM, at both temperatures. Despite these differences in temperature and population means, individual FE and RMR were not significantly correlated (P > 0.05). Therefore, although the results provide evidence of an association between metabolic rate and FE, RMR was not a predictor of individual FE, for reasons that require further investigation.

scholarly journals Physiological mechanisms underlying individual variation in tolerance of food deprivation in juvenile European sea bass, Dicentrarchus labrax

2014 ◽  
Vol 217 (18) ◽  
pp. 3283-3292 ◽  
Author(s):  
D. J. McKenzie ◽  
A. Vergnet ◽  
B. Chatain ◽  
M. Vandeputte ◽  
E. Desmarais ◽  
...  
Keyword(s):  
Food Deprivation ◽  
Individual Variation ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Physiological Mechanisms ◽  
European Sea Bass

scholarly journals Food deprivation reduces social interest in the European sea bass Dicentrarchus labrax

2019 ◽  
Vol 222 (3) ◽  
pp. jeb190553 ◽  
Author(s):  
Cassandre Aimon ◽  
Nicolas Le Bayon ◽  
Stéphane Le Floch ◽  
Guy Claireaux
Keyword(s):  
Food Deprivation ◽  
Social Interest ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass

scholarly journals Body length rather than routine metabolic rate and body condition correlates with activity and risk-taking in juvenile zebrafish Danio rerio

2016 ◽  
Vol 89 (5) ◽  
pp. 2251-2267 ◽  
Author(s):  
G. Polverino ◽  
D. Bierbach ◽  
S. S. Killen ◽  
S. Uusi-Heikkilä ◽  
R. Arlinghaus
Keyword(s):  
Metabolic Rate ◽  
Body Length ◽  
Body Condition ◽  
Danio Rerio ◽  
Risk Taking ◽  
Routine Metabolic Rate

scholarly journals Temperature and O2, but not CO2, interact to affect aerobic performance of European sea bass (Dicentrarchus labrax)

2021 ◽  
Author(s):  
Daniel W. Montgomery ◽  
Stephen D. Simpson ◽  
William Davison ◽  
Harriet R. Goodrich ◽  
Georg H. Engelhard ◽  
...  
Keyword(s):  
Metabolic Rate ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Blood Chemistry ◽  
Interactive Effects ◽  
Hypoxia Tolerance ◽  
Performance Standard ◽  
Aerobic Performance ◽  
Aerobic Scope ◽  
European Sea Bass

AbstractClimate change causes warming, decreased O2, and increased CO2 in marine systems and responses of organisms will depend on interactive effects between these factors. We provide the first experimental assessment of the interactive effects of warming (14 to 22°C), reduced O2 (∼3 – 21 kPa O2), and increased CO2 (∼400 or ∼1000 µatm ambient CO2) on four indicators of aerobic performance (standard metabolic rate, SMR, maximum metabolic rate, MMR, aerobic scope, and hypoxia tolerance, O2crit), blood chemistry, and O2 transport (P50) of a marine fish, the European sea bass (Dicentrarchus labrax). Warming increased SMR and O2crit (i.e. reduced hypoxia tolerance) as well as MMR in normoxia but there was an interactive effect with O2 so that hypoxia caused larger reductions in MMR and aerobic scope at higher temperatures. Increasing CO2 had minimal effects on SMR, MMR and O2crit and did not show interactive effects with temperature or O2 for any measured variables. Aerobic performance was not linked to changes in blood chemistry or P50. Despite lack of effects of CO2 on aerobic performance, increased CO2 induced 30% mortality of fish exercised in low O2 at 22°C indicating important threshold effects independent of aerobic performance. Overall, our results show temperature and O2, but not CO2, interact to affect aerobic performance of sea bass, disagreeing with predictions of the oxygen- and capacity-limited thermal tolerance hypothesis.

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