scholarly journals Early exposure to chronic hypoxia induces short- and long-term regulation of hemoglobin gene expression in European sea bass (Dicentrarchus labrax)

2017 ◽  
Vol 220 (17) ◽  
pp. 3119-3126 ◽  
Author(s):  
Laura Cadiz ◽  
Arianna Servili ◽  
Patrick Quazuguel ◽  
Lauriane Madec ◽  
José-Luis Zambonino-Infante ◽  
...  
Keyword(s):  
Gene Expression ◽  
Chronic Hypoxia ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Early Exposure ◽  
European Sea Bass ◽  
Hemoglobin Gene ◽  
Short And Long Term

Growth improvement by probiotic in European sea bass juveniles (Dicentrarchus labrax, L.), with particular attention to IGF-1, myostatin and cortisol gene expression

Aquaculture ◽  
2006 ◽  
Vol 258 (1-4) ◽  
pp. 430-438 ◽  
Author(s):  
Oliana Carnevali ◽  
Luisa de Vivo ◽  
Roberto Sulpizio ◽  
Giorgia Gioacchini ◽  
Ike Olivotto ◽  
...  
Keyword(s):  
Gene Expression ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
European Sea Bass

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 Using Glycerol to Produce European Sea Bass Feed With Oleaginous Microbial Biomass: Effects on Growth Performance, Filet Fatty Acid Profile, and FADS2 Gene Expression

2021 ◽  
Vol 8 ◽  
Author(s):  
Genciana Terova ◽  
Federico Moroni ◽  
Micaela Antonini ◽  
Stefano Bertacchi ◽  
Chiara Pesciaroli ◽  
...  
Keyword(s):  
Gene Expression ◽  
Dicentrarchus Labrax ◽  
Sea Bass ◽  
Biodiesel Production ◽  
Human Consumption ◽  
Nutritional Regulation ◽  
European Sea Bass ◽  
Heterotrophic Cultivation ◽  
Best Value ◽  
Δ6 Desaturase

Using a circular economy concept, the present study investigated the use of crude glycerol, a primary by-product of biodiesel production, as a low-priced nutrient source for heterotrophic cultivation of the fungus-like protist Schizochytrium limacinum SR21 strain. The whole biomass of this oleaginous microorganism, rich in docosahexaenoic acid (DHA) and high-quality proteins, was then paired with a vegetable oil (VO) source and used to replace fish oil (FO) in European sea bass (Dicentrarchus labrax) feeds. Four nutritionally balanced diets were formulated: diet FO (a FO-based diet), diet VO + 0 (a VO-based diet without S. limacinum), and diets VO + 5 and VO + 10 that were VO-based feeds supplemented with 5 and 10% of S. limacinum, respectively. After a 3-month feeding trial, fish of all dietary groups tripled their initial weight, but growth and feeding efficiencies of D. labrax were not significantly different among treatments. Although the formulated diets were balanced for polyunsaturated fatty acids (PUFAs), fish fed with feeds containing either VO or VO plus 5 and 10% of S. limacinum biomass had significantly higher levels of PUFAs in the flesh than fish fed the FO-based diet. Values of health-related lipid indexes, such as atherogenicity index, thrombogenicity index, and flesh lipid quality as well as n-6/n-3 and PUFAs/SFAs ratios confirmed the high nutritional value of sea bass filet, thus representing a healthy product for human consumption. Although the PUFAs/SFAs ratio showed a significantly higher value in fish fed with VO-based diets supplemented with S. limacinum than in those fed with FO diet, suggesting a better filet quality, the n-6/n-3 ratio clearly indicated that filet quality of dietary group FO was best (value of 0.55) and that of group VO + 10 second best (value of 0.98). We also evaluated the nutritional regulation of Δ6-desaturase (or fads2) gene expression in European sea bass liver. European sea bass fed the VO + 0 diet had the highest number of mRNA copies for Δ6-desaturase (or fads2), fish fed with diet VO + 10 the lowest. Our study adds to the growing body of literature concerning the use of thraustochytrid biomass as a valid alternative to marine-derived raw materials for European sea bass feeds.

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.

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