RT journal article
T1 Antimicrobial and Toxic Activity of Citronella Essential Oil (Cymbopogon nardus), and Its Effect on the Growth and Metabolism of Gilthead Seabream (Sparus aurata L.)
A1 García Márquez, Jorge
A1 Barany Ruiz, Andre
A1 Broz Ruiz, Álvaro
A1 Costas, Benjamín
A1 Arijo Andrade, Salvador
A1 Mancera Romero, Juan Miguel
A2 Biología
K1 acute toxicity
K1 lemongrass
K1 Sparidae
K1 Aeromonas hydrophila
K1 Photobacterium damselae subsp. piscicida
K1 Vibrio fischeri
K1 Vibrio harveyi
AB Aquaculture procedures usually induce stress that affects the physiological status of fish. For this reason, the inclusion of additives in fish feeds to palliate stress might be a good alternative. This study aimed to assess the antimicrobial activity of citronella (Cymbopogon nardus) essential oil (CEO) against bacterial pathogens and to determine its dietary impact on the growth performance of Sparus aurata. In vitro tests confirmed that CEO possesses antimicrobial activity against several fish-specific pathogens. For the in vivo tests, three experimental groups were fed for 60 days with different concentrations of CEO: CTRL (0 mL kg(-1) fish feed); CEO1 (1 mL kg(-1) fish feed); and CEO2 (2 mL kg(-1) fish feed). At the end of the experiment, the physiological status was characterized. Subsequently, the specimens of the CTRL and CEO2 groups were subjected to a challenge with an injection of Poly I:C for immune stimulation. Although S. aurata individuals tolerated CEO inclusion without compromising growth performance, it significantly reduced glycogen in the CEO2 group, concomitant to an increment of total peripheral leucocytes. Moreover, different hematological profiles' responsive patterns against an inflammatory stimulus were observed. In conclusion, our results suggest that the use of CEO as a fish feed additive can prevent bacterial outbreaks and improve potential in vivo disease resistance in S. aurata without negatively affecting growth.
PB MDPI
SN 2410-3888
YR 2021
FD 2021-12
LK http://hdl.handle.net/10498/26431
UL http://hdl.handle.net/10498/26431
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 21-sep-2026