Isaura Banuelos-VargasAutonomous University of Sinaloa, Mexico · Aquaculture
Isaura Banuelos-Vargas
PhD
About
21
Publications
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Introduction
I study the metabolic responses and antioxidant defense of hybrid tilapia cultured in marine systems with biofloc and probiotics.
I am doing research about hematological characterization of farmed and wild green guapote Mayaheros beani, to develop a base data to help the development of its aquaculture.
Also, we evaluate commercial products with potential to improve the aquaculture production of shrimp and fish. So that companies and producers have scientifically certain information about the benefits they can obtain.
Publications
Publications (21)
This study evaluated the effects on the growth performance and physiological response (metabolism, hematology, and antioxidant capacity) of the juvenile hybrid red tilapia Oreochromis sp. (initial average weight of 2.82 ± 0.02 g) cultured in seawater with biofloc and fed commercial diets containing 25, 35 and 40% crude protein (P25, P35, and P40, r...
Se evaluó el efecto de inhibidores naturales y sintéticos de la enzima aromatasa sobre el crecimiento, supervivencia y masculinización en crías de tilapia del Nilo. Cinco flavonoides: crisina (CRI), 7-hidroxiflavona (7-HF), apigenina (NA), naringenina (NAR) y 7-metoxiflavona (7-MF) a 1 000, 1 500 y 2 000 mg kg-1; un compuesto no esteroideo: letrozo...
Objectives. To assess the effect of different farming methods on the condition factor and egg production of female tilapia brooders. Materials and methods. Three different brooder stocks were kept under three experimental treatments: TC - green water (control), T1 -aquamimicry, and T2 - biofloc. Each broodstock was repeated in each experimental tre...
The dairy industry traditionally uses aspartic proteases from bovine and microbial sources for cheese processing, but there is interest in alternative enzyme sources to supply the large global demand for rennet. This study investigated the biochemical characterization of a partially purified pepsin of yellowfin tuna with milk-clotting activity (MCA...
This paper aimed to evaluate the effects of feeding rate and the hormonal treatments for spawning induction on the condition factor, and the reproductive performance of the striped catfish, Pangasianodon hypophthalmus. A commercial diet with 35% of protein in three feeding rates-1%, 2%, and 3% biomass, were supplied for 184 days-and two hormonal me...
The Nile tilapia (Oreochromis niloticus) industry represent the 71% of aquaculture total world production and demands for novel feeds and better proteins. In this sense, Pacific thread herring (Ophistonema libertate) contains high-quality proteins suitable to produce protein hydrolysates (PH) with antioxidant activity for tilapia feeds. In this stu...
PurposeHigh amounts of rich-protein liquid wastes are produced during seafood processing. The effluent called stickwater resulting from the processing of Pacific thread herring (Ophistonema libertate) into fishmeal, was evaluated as protein source to produce bioactive protein hydrolysates by using Alcalase as enzyme source.Methods
The effect of deg...
Objetivo. El propósito del presente trabajo fue evaluar el efecto del ácido tánico y de las proteasas para eliminación de la capa adherente en huevos fecundados de bagre asiático, P. hypophthalmus, para mejorar las condiciones de incubación. Materiales y métodos. Se utilizó ácido tánico a 0.5 g L-1 por 5 min, proteasa a 5 mL L-1 por 8 min para la e...
This study aimed to assess the growth performance, antioxidant and immune responses of red tilapia (Oreochromis sp.) reared in seawater with two stocking densities (D1, 120 fish/m3; D2, 240 fish/m3) with biofloc plus probiotics. For each density, juvenile red tilapia (6.7 ± 0.2 g) were cultured under three different experimental conditions: clear s...
Purpose
High amounts of rich-protein liquid wastes are produced during seafood processing. The effluent called stickwater resulting from the processing of Pacific thread herring (Ophistonema libertate) into fishmeal, was evaluated as protein source to produce bioactive protein hydrolysates by using Alcalase as enzyme source.
Methods
The effect of...
Our research focused on the study of hematology, proximal and fatty acid (FA) composition of wild and farmed green guapote. Results showed no significant differences between wild and farmed fish in red blood cell count (1.77-2.57 ×106 cel μL-1), hemoglobin (11.6-15.1 g dL-1), glucose (68-115 mg dL-1) and the crude protein of whole body (51-58%). Ho...
Silicon dioxide has been used in aquaculture to increase the abundance of diatoms; however, its relationship with water quality or productive performance has not been investigated. Our study evaluated the effect of diatomite on water quality, growth performance and proximate composition of Penaeus vannamei reared in seawater (E1) and brackish water...
One way to know the health condition of cultured organisms is through application of hematological tools. An experiment was carried out with juveniles of red tilapia Oreochromis spp. reared in sea water at two densities in clear water (114 fish/m3 and 228 fish/m3) or with biofloc (B1 and B2, respectively) and probiotic (B+P1 and B+P2). At the end o...
Pepsin from stomach of Bagre panamensis was semi-purified and biochemically characterized. The acid proteolytic activity and purification fold were 3875 U/mg protein and 91.85, respectively, after purification process. The optimum pH and temperature for semi-purified protease were 2–3 and 65 °C, respectively. The enzyme activity was stable after he...
Tilapia is one of the most cultivated fish in the world, but the low availability of freshwater for aquaculture is one of the main problems for its expansion. Although its cultivation in salt water and biofloc could be viable alternatives, scientific studies should to be done to know their physiology adaptation at different conditions. Our main goa...
Litopenaeus vannamei juveniles were exposed to sublethal levels (2.33–18.03 µg/L) of inorganic mercury. Time of exposure (0, 24 and 168 h) was a source of DNA damage. Mean comet tail length not changed significantly with mercury concentrations and exposure time, and this parameter cannot be used to assess DNA damage in this shrimp. Total hemocyte c...
The objectives of the present study were to characterize biochemically the proteases present in gastric juices from adults of the southern king crab (Lithodes santolla) and the Chilean rock crab (Cancer edwardsii), to determine the classes of proteases using specific inhibitors, as well as to evaluate the effect of temperature and pH that affect th...
The effect of dietary inclusion of soy protein concentrate (SPC) and simultaneous supplementation with taurine on the growth, hematology, blood biochemistry, and liver histology of totoaba (Totoaba macdonaldi) juveniles was assessed. Four isoproteic and isolipidic diets were formulated containing either 30 or 60 % of SPC (diets S30 and S60), supple...
The ranges of concentrations of Cd, Cu, Pb and Zn of the soft tissues of C. corteziensis collected in seven coastal lagoons of NW Mexico were 1.55-7.45, 17.50-166.36, 4.13-9.49 and 245.34-2,304.12 microg/g (dry weight), respectively. Their distributions were not consistent and there were no seasonal trends, indicating different point sources of the...