5 documents found, page 1 of 1
Effect of bile salts on intestinal epithelial function in gilthead seabream (Sp...
Fuentes, J.; Gregorio, Silvia; F. Fonseca; Robles-Arozarena, R.; Martos-Sitcha, J. A.; Moyano, F. J.In the context of modern aquaculture, the effort to reduce the reliance on fishmeal/marine ingredients in fish diets has led to the exploration of plant-based protein sources as potential substitutes, a dietary shift that disrupts the bile acid profile in fish. Therefore, bile salts are being sought as additives. However, artificially increased intestinal levels of bile acids may significantly impact mucosal fu...
Health status in gilthead seabream (Sparus aurata) juveniles fed diets devoid o...
Reis, B.; Ramos-Pinto, L.; Martos-Sitcha, J. A.; Machado, M.; Azeredo, R.; Fernandez-Boo, S.; Engrola, S.; Unamunzaga, C.; Calduch-Giner, J.To enhance fish general health, feeds can be supplemented with health-promoting additives, reducing the need to use chemotherapeutics. Incorporation of marine algae biomasses in aquafeeds has been shown to improve fish immune status by enhancing innate immune response. This study evaluated the effects of Phaeodactylum tricornutum incorporation in feed by two different processes, either as freeze-dried biomass o...
Characterization of the peripheral thyroid system of gilthead seabream acclimat...
Ruiz-Jarabo, I.; Klaren, P. H. M.; Louro, Bruno; Martos-Sitcha, J. A.; Pinto, P. I.; Vargas-Chacoff, L.; Flik, G.; Martinez-Rodriguez, G.Thyroid hormones are involved in many developmental and physiological processes, including osmoregulation. The regulation of the thyroid system by environmental salinity in the euryhaline gilthead seabream (Sparus aurata) is still poorly characterized. To this end seabreams were exposed to four different environmental salinities (5, 15, 40 and 55 ppt) for 14 days, and plasma free thyroid hormones (fT3, ff4), ou...
AVT is involved in the regulation of ion transport in the intestine of the sea ...
Martos-Sitcha, J. A.; Gregorio, Silvia; Carvalho, Edison Samir Mascarelhas; Canario, Adelino V. M.; Power, Deborah; Mancera, J. M.The intestine of marine fish plays a crucial role in ion homeostasis by selective processing of ingested fluid. Although arginine vasotocin (AVT) is suggested to play a role in ion regulation in fish, its action in the intestine has not been demonstrated. Thus, the present study investigated in vitro the putative role of AVT in intestinal ion transport in the sea bream (Sparus aurata). A cDNA encoding part of a...
Physiological responses of Senegalese sole (Solea senegalensis Kaup, 1858) afte...
Costas, B.; Conceição, L. E. C.; Aragão, C.; Martos-Sitcha, J. A.; Ruiz-Jarabo, I.; Mancera, J. M.; Afonso, A.Physiological responses after an acute handling stress and their subsequent effects on innate immune parameters, plasma free amino acids (AA) and liver energy substrates were assessed in Senegalese sole (Solea senegalensis). Eight groups of six specimens (136.1± 58.4 g wet weight) were maintained undisturbed, while other eight groups of six specimens were used for acute stress challenge (air exposed during 3 mi...