7 documents found, page 1 of 1
Antioxidant capacity and lipid composition of Brachionus plicatilis and Artemia...
Galindo, A.; Pérez, J. A.; Almansa, E.; Rosa, G. P.; Jiménez, I. A.; Venuleo, M.; Acosta, N. G.; Rodríguez, C.Live prey used by the aquaculture industry are usually poor in some essential nutrients including long chain polyunsaturated fatty acids (LC-PUFA) and must be enriched to improve their nutritional value prior to larval feeding. Standard enrichment protocols are commonly based on lipid emulsions, being associated to a high oxidative stress condition. The combination of microalgae and lipid emulsion can palliate ...
In vivo metabolism of unsaturated fatty acids in Sepia officinalis hatchlings
Reis, Diana; Rodriguez, C.; Acosta, N. G.; Almansa, E.; Tocher, D. R.; Andrade, José Pedro; Sykes, António V.The transition of Sepia officinalis culture to industrial large scale has been hampered due to bottlenecks related to the limited knowledge on nutritional physiology of the species. Determination of the endogenous ability of S. officinalis hatchlings to metabolise unsaturated fatty acids (FA) may provide new insight on the capability of hatchlings to biosynthesise different FA, as well as lipid classes containi...
An insight on Octopus vulgaris paralarvae lipid requirements under rearing cond...
Reis, Diana; García-Herrero, I.; Riera, R.; Felipe, B. C.; Rodríguez, C.; Sykes, António V.; Martín, M. V.; Andrade, José Pedro; Almansa, E.In this study, two new alternative preys: Grapsus adscensionis zoeae (as sole prey) and Palaemon elegans zoeae (in cofeeding with Artemia sp.), as well as, Artemia sp. juveniles were used as feed for octopus paralarvae, as a way to understand its lipid requirements. Total lipid (TL) content, lipid class (LC) and fatty acid (FA) profiles of preys, octopus hatchlings and 9-day-old paralarvae were analysed. Growth...
In vivo metabolism of unsaturated fatty acids in Octopus vulgaris hatchlings de...
Reis, Diana; Acosta, N. G.; Almansa, E.; Navarro, J. C.; Tocher, D. R.; Monroig, O.; Andrade, José Pedro; Sykes, António V.; Rodríguez, C.The highmortalities observed during Octopus vulgaris paralarvae culture have been associated with a nutritional imbalance, with long-chain polyunsaturated fatty acids (LC-PUFA) appearing to have a critical role. In order to determine the in vivo capability of O. vulgaris hatchlings to incorporate and metabolise unsaturated fatty acids (FA), hatchlings were incubated in flat-bottom 6-well tissue culture plates a...
A general survey of the feasibility of culturing the mysid Gastrosaccus roscoff...
Escanez, A.; Riere, R.; Marquez, L.; Skalli, A.; Felipe, B. C.; Garcia-Herrero, I.; Reis, D.; Rodriguez, C.; Almansa, E.The effects of culture conditions on growth, survival, predation, and nutritional composition of the mysid Gastrosaccus roscoffensis were studied. Light had a negative effect on the predation rates of G roscoffensis and predator size was important to prey on Artemia nauplii and rotifers (Brachionus plicatilis). Growth rates were higher in the first three weeks and measured individuals increased almost 7 mm in l...
Enzymatic surface hydrolysis of PET enhances bonding in PVC coating
Almansa, E.; Heumann, S.; Eberl, A.; Fischer-Colbrie, Gudrun; Martinkova, L.; Marek, J.; Paulo, Artur Cavaco; Guebitz, G. M.The effect of polyesterase preparations from Thermomyces lanuginosus and Beauveria brongniartii on the hydrophilicity of PET materials was assessed. As a result of polyesterase treatment the hydrophilicity of PET fabrics was increased by up to 8 cm in terms of rising height with increases in surface tension from 6.2 mNm (heat-inactivated control samples) to above 8 mNm. Both enzymes were able to increase the am...
Effects of culture density and live prey on growth and survival of juvenile cut...
Domingues, P.; Poirier, R.; Dickel, L.; Almansa, E.; Sykes, António V.; Andrade, José PedroThe European cuttlefish, Sepia offıcinalis Linnaeus 1758, has a number of characteristics, such as a fast growth rate and benthic life style, which make this one of the most promising species for large-scale culture (Domingues 1999). One of the key factors in large-scale aquaculture is to optimise growth while minimizing the culture space required (Forsythe et al. 2002). Until now, only Nabhitabhata (1999) and ...