The coastal area of Arinaga is located at the Eastern coast of Gran Canaria island. This area is ... more The coastal area of Arinaga is located at the Eastern coast of Gran Canaria island. This area is influenced by the alisios winds which is the trade wind duhg most of the year. These winds affect the general climatology and hydrodinamic conditions in this area. Based on a twa years study, a bionornical protile is provided for both the intertidal and subtidal communities do~n to 30 meten depth. In this study, the principal bionomical features of the area are presented. Several representative speues of the Eastern c~asts of Gran Canaria can be observed in this area. Some new records are reported for the Canarian Archipelago or Gran Canaria island.
Meagre (Argyrosomus regius; Figure 5.4.1) are distributed throughout the Mediterranean Sea, altho... more Meagre (Argyrosomus regius; Figure 5.4.1) are distributed throughout the Mediterranean Sea, although they are uncommon in many parts of their range, although has not been very common in the wildness until it was farmed and some reiterate escape events increased its presence in the commercial catches during the last 5 years (Sánchez-Jerez et al. 2011). In the Atlantic, meagre are distributed from the southern coast of Sweden to the Guinean gulf, including Madeira and the Canary Islands. They are a large predatory fish and can grow up to 2 m and reach more than 50 kg.
The overall aims of the project is to identify, in sea bream, sea bass, oyster, and rainbow trout... more The overall aims of the project is to identify, in sea bream, sea bass, oyster, and rainbow trout, genes of which expression is associated with disease and stress resistance and to develop genetic approaches that allow characterisation of genetic markers for marker-assisted selective breeding of disease and/or stress resistant individuals. For such project, the following main objectives have to be reached: Characterisation of stress-and disease-responsive genes as potential candidate gene markers for desirable traits. Identification of ...
The objective of the present study was to investigate the combined effect of several dietary cont... more The objective of the present study was to investigate the combined effect of several dietary contents of vitamin E and polyunsaturated fatty acids (PUFA), mainly docosahexaenoic acid (DHA), on growth, survival, biochemical composition and tissue morphology of sea bass along early development. A feeding experiment was conducted in sea bass larvae using five different diets with the same proximate composition and different ratios of DHA concentrated fish oil [10, 30 and 50 g kg−1 dry weight (DW)] and vitamin E (α-tocopherol acetate) (1500 and 3000 mg kg−1 DW). DHA was readily deposited in fish tissues and associated with higher sea bass mortalities probably because of increased peroxidation risks. Besides, the elevation of dietary DHA contents up to 5% severely increased the incidence of muscular lesions and the presence of ceroid pigment within hepatocytes. However, elevation of dietary vitamin E levels markedly reduced the incidence of these symptoms in sea bass, increasing the tissue content in several PUFA and improving growth and stress resistance. Moreover, when sea bass was fed diets containing high vitamin E levels, fish showed a significant improvement in growth when dietary DHA was raised from 1% to 3%. Therefore, in sea bass larvae, a ratio of 30 g kg−1 DHA and 3000 mg kg−1 vitamin E seems to be adequate to achieve a good larval performance and to avoid muscular lesions.
European Journal of Lipid Science and Technology, 2010
Impact on proximate and fatty acids patterns of partial and complete dietary replacement of fish ... more Impact on proximate and fatty acids patterns of partial and complete dietary replacement of fish oil (FO) by linseed oil (LO) within on-growing period was evaluated on marketable-size gilthead sea bream (Sparus aurata) during 17 days of ice storage. The practical diets were ...
The rearing of Octopus vulgaris paralarvae during its planktonic life stage is a major challenge,... more The rearing of Octopus vulgaris paralarvae during its planktonic life stage is a major challenge, as mortality is currently very high and unpredictable. In this study, we examined the survival and growth rates, as well as the fatty acid composition, of O. vulgaris paralarvae ...
The coastal area of Arinaga is located at the Eastern coast of Gran Canaria island. This area is ... more The coastal area of Arinaga is located at the Eastern coast of Gran Canaria island. This area is influenced by the alisios winds which is the trade wind duhg most of the year. These winds affect the general climatology and hydrodinamic conditions in this area. Based on a twa years study, a bionornical protile is provided for both the intertidal and subtidal communities do~n to 30 meten depth. In this study, the principal bionomical features of the area are presented. Several representative speues of the Eastern c~asts of Gran Canaria can be observed in this area. Some new records are reported for the Canarian Archipelago or Gran Canaria island.
Meagre (Argyrosomus regius; Figure 5.4.1) are distributed throughout the Mediterranean Sea, altho... more Meagre (Argyrosomus regius; Figure 5.4.1) are distributed throughout the Mediterranean Sea, although they are uncommon in many parts of their range, although has not been very common in the wildness until it was farmed and some reiterate escape events increased its presence in the commercial catches during the last 5 years (Sánchez-Jerez et al. 2011). In the Atlantic, meagre are distributed from the southern coast of Sweden to the Guinean gulf, including Madeira and the Canary Islands. They are a large predatory fish and can grow up to 2 m and reach more than 50 kg.
The overall aims of the project is to identify, in sea bream, sea bass, oyster, and rainbow trout... more The overall aims of the project is to identify, in sea bream, sea bass, oyster, and rainbow trout, genes of which expression is associated with disease and stress resistance and to develop genetic approaches that allow characterisation of genetic markers for marker-assisted selective breeding of disease and/or stress resistant individuals. For such project, the following main objectives have to be reached: Characterisation of stress-and disease-responsive genes as potential candidate gene markers for desirable traits. Identification of ...
The objective of the present study was to investigate the combined effect of several dietary cont... more The objective of the present study was to investigate the combined effect of several dietary contents of vitamin E and polyunsaturated fatty acids (PUFA), mainly docosahexaenoic acid (DHA), on growth, survival, biochemical composition and tissue morphology of sea bass along early development. A feeding experiment was conducted in sea bass larvae using five different diets with the same proximate composition and different ratios of DHA concentrated fish oil [10, 30 and 50 g kg−1 dry weight (DW)] and vitamin E (α-tocopherol acetate) (1500 and 3000 mg kg−1 DW). DHA was readily deposited in fish tissues and associated with higher sea bass mortalities probably because of increased peroxidation risks. Besides, the elevation of dietary DHA contents up to 5% severely increased the incidence of muscular lesions and the presence of ceroid pigment within hepatocytes. However, elevation of dietary vitamin E levels markedly reduced the incidence of these symptoms in sea bass, increasing the tissue content in several PUFA and improving growth and stress resistance. Moreover, when sea bass was fed diets containing high vitamin E levels, fish showed a significant improvement in growth when dietary DHA was raised from 1% to 3%. Therefore, in sea bass larvae, a ratio of 30 g kg−1 DHA and 3000 mg kg−1 vitamin E seems to be adequate to achieve a good larval performance and to avoid muscular lesions.
European Journal of Lipid Science and Technology, 2010
Impact on proximate and fatty acids patterns of partial and complete dietary replacement of fish ... more Impact on proximate and fatty acids patterns of partial and complete dietary replacement of fish oil (FO) by linseed oil (LO) within on-growing period was evaluated on marketable-size gilthead sea bream (Sparus aurata) during 17 days of ice storage. The practical diets were ...
The rearing of Octopus vulgaris paralarvae during its planktonic life stage is a major challenge,... more The rearing of Octopus vulgaris paralarvae during its planktonic life stage is a major challenge, as mortality is currently very high and unpredictable. In this study, we examined the survival and growth rates, as well as the fatty acid composition, of O. vulgaris paralarvae ...
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