scholarly journals Long-term exposure to near-future ocean acidification does not affect the expression of neurogenesis- and synaptic transmission-related genes in the olfactory bulb of European sea bass (Dicentrarchus labrax)

2020 ◽  
Vol 190 (2) ◽  
pp. 161-167 ◽  
Author(s):  
David Mazurais ◽  
Arianna Servili ◽  
Nicolas Le Bayon ◽  
Sebastien Gislard ◽  
Lauriane Madec ◽  
...  
Keyword(s):  
Olfactory Bulb ◽  
Synaptic Transmission ◽  
Ocean Acidification ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass ◽  
Near Future

scholarly journals Long-term effects of ocean acidification upon energetics and oxygen transport in the European sea bass (Dicentrarchus labrax, Linnaeus)

2019 ◽  
Vol 166 (9) ◽  
Author(s):  
Amélie Crespel ◽  
Katja Anttila ◽  
Pernelle Lelièvre ◽  
Patrick Quazuguel ◽  
Nicolas Le Bayon ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Oxygen Transport ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Long Term Effects ◽  
European Sea Bass

scholarly journals Is the perceived resiliency of fish larvae to ocean acidification masking more subtle effects?

2013 ◽  
Vol 10 (10) ◽  
pp. 17043-17070 ◽  
Author(s):  
E. C. Pope ◽  
R. P. Ellis ◽  
M. Scolamacchia ◽  
J. W. S. Scolding ◽  
A. Keay ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Early Life ◽  
Fish Larvae ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Life Stages ◽  
Daily Mortality ◽  
Early Life Stages ◽  
European Sea Bass ◽  
Near Future

Abstract. Ocean acidification, caused by rising concentrations of carbon dioxide (CO2), is widely considered to be a major global threat to marine ecosystems. To investigate the potential effects of ocean acidification on the early life stages of a commercially important fish species, European sea bass (Dicentrarchus labrax), 12 000 larvae were incubated from hatch through metamorphosis under a matrix of two temperatures (17 and 19 °C) and two seawater pCO2s (400 and 750 μatm) and sampled regularly for 42 days. Calculated daily mortality was significantly affected by both temperature and pCO2, with both increased temperature and elevated pCO2 associated with lower daily mortality and a significant interaction between these two factors. There was no significant pCO2 effect noted on larval morphology during this period but larvae raised at 19 °C possessed significantly larger eyes and lower carbon:nitrogen ratios at the end of the study compared to those raised under 17 °C. These results suggest that D. labrax larvae are resilient to near-future oceanic conditions. However, when the incubation was continued to post-metamorphic (juvenile) animals (day 67–69), fish raised under a combination of 19 °C and 750 μatm pCO2 were significantly heavier and exhibited lower aerobic scopes than those incubated at 19 °C and 400 μatm. Most other studies investigating the effects of near-future oceanic conditions on the early life stages of marine fish have used incubations of relatively short durations and suggested these animals are resilient to ocean acidification. We propose the durations of these other studies may be insufficient for more subtle effects, such as those observed in this study, to become apparent. These findings may have important implications for both sea bass in a changing ocean and also for the interpretation of results from other studies that have shown resiliency in marine teleosts exposed to higher atmospheric concentrations of CO2.

scholarly journals European sea bass show behavioural resilience to near-future ocean acidification

2016 ◽  
Vol 3 (11) ◽  
pp. 160656 ◽  
Author(s):  
M. Duteil ◽  
E. C. Pope ◽  
A. Pérez-Escudero ◽  
G. G. de Polavieja ◽  
I. Fürtbauer ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Ambient Conditions ◽  
European Sea Bass ◽  
Agent Based ◽  
Automated Tracking ◽  
Individual Fitness ◽  
Commercially Important ◽  
Near Future

Ocean acidification (OA)—caused by rising concentrations of carbon dioxide (CO 2 )—is thought to be a major threat to marine ecosystems and has been shown to induce behavioural alterations in fish. Here we show behavioural resilience to near-future OA in a commercially important and migratory marine finfish, the Sea bass ( Dicentrarchus labrax ). Sea bass were raised from eggs at 19°C in ambient or near-future OA (1000 µatm p CO 2 ) conditions and n  = 270 fish were observed 59–68 days post-hatch using automated tracking from video. Fish reared under ambient conditions, OA conditions, and fish reared in ambient conditions but tested in OA water showed statistically similar movement patterns, and reacted to their environment and interacted with each other in comparable ways. Thus our findings indicate behavioural resilience to near-future OA in juvenile sea bass. Moreover, simulated agent-based models indicate that our analysis methods are sensitive to subtle changes in fish behaviour. It is now important to determine whether the absences of any differences persist under more ecologically relevant circumstances and in contexts which have a more direct bearing on individual fitness.

Long-term exposure to continuous light inhibits precocity in juvenile male European sea bass (Dicentrarchus labrax, L.). I. Morphological aspects

Aquaculture ◽  
2004 ◽  
Vol 241 (1-4) ◽  
pp. 539-559 ◽  
Author(s):  
Ideal Begtashi ◽  
Lucinda Rodríguez ◽  
Gregorio Moles ◽  
Silvia Zanuy ◽  
Manuel Carrillo
Keyword(s):  
Dicentrarchus Labrax ◽  
Continuous Light ◽  
Sea Bass ◽  
Juvenile Male ◽  
European Sea Bass ◽  
Morphological Aspects

scholarly journals The development of contemporary European sea bass larvae (Dicentrarchus labrax) is not affected by projected ocean acidification scenarios

2017 ◽  
Vol 164 (7) ◽  
Author(s):  
Amélie Crespel ◽  
José-Luis Zambonino-Infante ◽  
David Mazurais ◽  
George Koumoundouros ◽  
Stefanos Fragkoulis ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass ◽  
Sea Bass Larvae

scholarly journals Epidemiology of Cryptosporidium molnari in Spanish Gilthead Sea Bream (Sparus aurata L.) and European Sea Bass (Dicentrarchus labrax L.) Cultures: from Hatchery to Market Size

2005 ◽  
Vol 71 (1) ◽  
pp. 131-139 ◽  
Author(s):  
A. Sitj�-Bobadilla ◽  
F. Padr�s ◽  
C. Aguilera ◽  
P. Alvarez-Pellitero
Keyword(s):  
Sparus Aurata ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Gilthead Sea Bream ◽  
Sea Bream ◽  
European Sea Bass ◽  
Different Types ◽  
Aquaculture Facilities ◽  
Marketable Size

ABSTRACT A long-term epidemiological study of Cryptosporidium molnari in aquacultured European sea bass (ESB) and gilthead sea bream (GSB) was performed in different types of facilities on the Atlantic, Cantabric, and Mediterranean coasts. Four types of studies were carried out. In study A, fish raised from juveniles to marketable size (ongrowing stage) were periodically sampled in three different types of cultures. Studies B and C focused on hatchery and nursery facilities. In study D, occasional samplings were performed during mortality or morbidity outbreaks. As a general trend, C. molnari was more prevalent in GSB than in ESB. Data on the distribution pattern of C. molnari in total sampled GSB (studies A, B, and D) had a variance higher than the mean (overdispersion). In GSB (study A), the type of ongrowing system (sea cages, earth ponds, or indoor tanks) was found to have no significant effect. There was a significant relationship between the presence of the parasite and both fish weight and season. The highest infection values were recorded in spring. Prevalence and intensity had convex weight profiles, with a peak in 30- to 100-g fish. In study D, the prevalence of infection was higher in fish recently introduced in sea cages and in preongrowing systems. In studies B and C, fish were almost never infected before entering the postlarval and nursery facilities. The parasite seems to enter the host mainly through the water in production steps with less stringent water treatment. Recirculation systems and fish cannibalism could contribute to oocyst concentration and dispersion in aquaculture facilities.

scholarly journals European sea bass, <i>Dicentrarchus labrax</i>, in a changing ocean

2014 ◽  
Vol 11 (9) ◽  
pp. 2519-2530 ◽  
Author(s):  
E. C. Pope ◽  
R. P. Ellis ◽  
M. Scolamacchia ◽  
J. W. S. Scolding ◽  
A. Keay ◽  
...  
Keyword(s):  
Ocean Acidification ◽  
Early Life ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Life Stages ◽  
Daily Mortality ◽  
Early Life Stages ◽  
European Sea Bass ◽  
Carbon Dioxide Co2 ◽  
Global Threat

Abstract. Ocean acidification, caused by rising concentrations of carbon dioxide (CO2), is widely considered to be a major global threat to marine ecosystems. To investigate the potential effects of ocean acidification on the early life stages of a commercially important fish species, European sea bass (Dicentrarchus labrax), 12 000 larvae were incubated from hatch through metamorphosis under a matrix of two temperatures (17 and 19 °C) and two seawater pCO2 levels (ambient and 1,000 μatm) and sampled regularly for 42 days. Calculated daily mortality was significantly affected by both temperature and pCO2, with both increased temperature and elevated pCO2 associated with lower daily mortality and a significant interaction between these two factors. There was no significant pCO2 effect noted on larval morphology during this period but larvae raised at 19 °C possessed significantly larger eyes and lower carbon:nitrogen ratios at the end of the study compared to those raised under 17 °C. Similarly, when the incubation was continued to post-metamorphic (juvenile) animals (day 67–69), fish raised under a combination of 19 °C and 1000 μatm pCO2 were significantly heavier. However, juvenile D. labrax raised under this combination of 19 °C and 1000 μatm pCO2 also exhibited lower aerobic scopes than those incubated at 19 °C and ambient pCO2. Most studies investigating the effects of near-future oceanic conditions on the early life stages of marine fish have used incubations of relatively short durations and suggested that these animals are resilient to ocean acidification. Whilst the increased survival and growth observed in this study supports this view, we conclude that more work is required to investigate whether the differences in juvenile physiology observed in this study manifest as negative impacts in adult fish.

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