The inclusion of thyme essential oil in the feed of gilthead seabream (Sparus aurata) promotes changes in the frequency of lymphocyte aggregates in gut-associated lymphoid tissue

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.

Download Full-text

Nanoencapsulated clove essential oil applied in low dose decreases stress in farmed gilthead seabream (Sparus aurata L.) during slaughter by hypothermia in ice slurry

Aquaculture ◽

10.1016/j.aquaculture.2019.02.003 ◽

2019 ◽

Vol 504 ◽

pp. 437-445 ◽

Cited By ~ 3

Author(s):

Amanda E. López-Cánovas ◽

Isabel Cabas ◽

María Ros-Chumillas ◽

Laura Navarro-Segura ◽

Antonio López-Gómez ◽

...

Keyword(s):

Essential Oil ◽

Low Dose ◽

Sparus Aurata ◽

Gilthead Seabream ◽

Ice Slurry ◽

Clove Essential Oil ◽

Farmed Gilthead Seabream

Download Full-text

Genetic parameters for quality traits by non-invasive methods and their G x E interactions in ocean cages and estuaries on gilthead seabream (Sparus aurata)

Aquaculture ◽

10.1016/j.aquaculture.2021.736462 ◽

2021 ◽

Vol 537 ◽

pp. 736462

Author(s):

I. Elalfy ◽

H.S. Shin ◽

D. Negrín-Báez ◽

A. Navarro ◽

M.J. Zamorano ◽

...

Keyword(s):

Genetic Parameters ◽

Sparus Aurata ◽

Gilthead Seabream ◽

Quality Traits ◽

Non Invasive

Download Full-text

Preparation and characterization of gellan gum-chitosan polyelectrolyte complex films with the incorporation of thyme essential oil nanoemulsion

Food Hydrocolloids ◽

10.1016/j.foodhyd.2020.106570 ◽

2021 ◽

Vol 114 ◽

pp. 106570

Author(s):

Xinhui Zhang ◽

Donghong Liu ◽

Tony Z. Jin ◽

Weijun Chen ◽

Qiao He ◽

...

Keyword(s):

Essential Oil ◽

Polyelectrolyte Complex ◽

Gellan Gum ◽

Thyme Essential Oil

Download Full-text

Genetic parameters for Photobacterium damselae subsp. piscicida resistance, immunological markers and body weight in gilthead seabream (Sparus aurata)

Aquaculture ◽

10.1016/j.aquaculture.2021.736892 ◽

2021 ◽

pp. 736892

Author(s):

Antonio Vallecillos ◽

Rubén Perez ◽

Elena Chaves-Pozo ◽

Marta Arizcun ◽

Juan M. Afonso ◽

...

Keyword(s):

Body Weight ◽

Genetic Parameters ◽

Sparus Aurata ◽

Gilthead Seabream ◽

Immunological Markers ◽

Photobacterium Damselae

Download Full-text

Thyme Essential Oil as an Antimicrobial and Biofilm Inhibitory Agent against Abscesses with P. mirabilis Infections

Journal of Herbal Medicine ◽

10.1016/j.hermed.2021.100446 ◽

2021 ◽

pp. 100446

Author(s):

Kemal Beksac ◽

Gulcan Sahal ◽

Hanife Guler Donmez

Keyword(s):

Essential Oil ◽

Thyme Essential Oil

Download Full-text

Effects of subcutaneous injection of λ/κ‐carrageenin on the immune and liver antioxidant status of gilthead seabream ( Sparus aurata )

Journal of Fish Diseases ◽

10.1111/jfd.13452 ◽

2021 ◽

Author(s):

José Carlos Campos‐Sánchez ◽

Francisco A. Guardiola ◽

José María García Beltrán ◽

Diana Ceballos‐Francisco ◽

María Ángeles Esteban

Keyword(s):

Subcutaneous Injection ◽

Antioxidant Status ◽

Sparus Aurata ◽

Gilthead Seabream

Download Full-text

Aflatoxicosis Dysregulates the Physiological Responses to Crowding Densities in the Marine Teleost Gilthead Seabream (Sparus aurata)

Animals ◽

10.3390/ani11030753 ◽

2021 ◽

Vol 11 (3) ◽

pp. 753

Author(s):

Andre Barany ◽

Juan Fuentes ◽

Gonzalo Martínez-Rodríguez ◽

Juan Miguel Mancera

Keyword(s):

Mrna Expression ◽

Sparus Aurata ◽

Stocking Density ◽

Head Kidney ◽

Dietary Exposure ◽

Experimental Period ◽

Gilthead Seabream ◽

Marine Teleost ◽

Lipid Metabolites ◽

Period Duration

Several studies in fish have shown that aflatoxin B1 (AFB1) causes a disparity of species-dependent physiological disorders without compromising survival. We studied the effect of dietary administration of AFB1 (2 mg AFB1 kg−1 diet) in gilthead seabream (Sparus aurata) juveniles in combination with a challenge by stocking density (4 vs. 40 g L−1). The experimental period duration was ten days, and the diet with AFB1 was administered to the fish for 85 days prior to the stocking density challenge. Our results indicated an alteration in the carbohydrate and lipid metabolites mobilization in the AFB1 fed group, which was intensified at high stocking density (HSD). The CT group at HSD increased plasma cortisol levels, as expected, whereas the AFB1-HSD group did not. The star mRNA expression, an enzyme involved in cortisol synthesis in the head kidney, presented a ninefold increase in the AFB1 group at low stocking density (LSD) compared to the CT-LSD group. Adenohypophyseal gh mRNA expression increased in the AFB1-HSD but not in the CT-HSD group. Overall, these results confirmed that chronic AFB1 dietary exposure alters the adequate endocrinological physiological cascade response in S. aurata, compromising the expected stress response to an additional stressor, such as overcrowding.

Download Full-text

Influence of Genetic Selection for Growth and Broodstock Diet n-3 LC-PUFA Levels on Reproductive Performance of Gilthead Seabream, Sparus aurata

Animals ◽

10.3390/ani11020519 ◽

2021 ◽

Vol 11 (2) ◽

pp. 519

Author(s):

Shajahan Ferosekhan ◽

Serhat Turkmen ◽

Cathaysa Pérez-García ◽

Hanlin Xu ◽

Ana Gómez ◽

...

Keyword(s):

Reproductive Performance ◽

Egg Quality ◽

Sparus Aurata ◽

Genetic Selection ◽

Growth Trait ◽

High Growth ◽

Gilthead Seabream ◽

Commercial Diet ◽

Selection For ◽

Broodstock Diet

Genetic selection in gilthead seabream (GSB), Sparus aurata, has been undertaken to improve the growth, feed efficiency, fillet quality, skeletal deformities and disease resistance, but no study is available to delineate the effect of genetic selection for growth trait on GSB reproductive performance under mass spawning condition. In this study, high growth (HG) or low growth (LG) GSB broodstock were selected to evaluate the sex steroid hormones, sperm, egg quality and reproductive performance under different feeding regime of commercial diet or experimental broodstock diet containing either fish oil (FO) or vegetable oil (VO) based diet. Under commercial diet feeding phase, broodstock selected for either high growth or low growth did not show any significant changes in the egg production per kg female whereas egg viability percentage was positively (p = 0.014) improved by the high growth trait broodstock group. The experimental diet feeding results revealed that both growth trait and dietary fatty acid composition influenced the reproductive performance of GSB broodstock. In the experimental diet feeding phase, we observed high growth trait GSB males produced a higher number of sperm cells (p < 0.001) and also showed a higher sperm motility (p = 0.048) percentage. The viable egg and larval production per spawn per kg female were significantly improved by the broodstock selected for high growth trait and fed with fish oil-based diet. This present study results signifies that gilthead seabream broodstock selected on growth trait could have positive role in improvement of sperm and egg quality to produce viable progeny.

Download Full-text