A5053392585- Plant and soil sciences
- Marine Bivalve and Aquaculture Studies
- Aquaculture Nutrition and Growth
- Aquaculture disease management and microbiota
- Avian ecology and behavior
- Species Distribution and Climate Change
- Wildlife Conservation and Criminology Analyses
- Plant tissue culture and regeneration
- Botanical Research and Applications
- Seed Germination and Physiology
- Invertebrate Immune Response Mechanisms
- Soil Science and Environmental Management
- Business, Innovation, and Economy
- Growth and nutrition in plants
- Plant Stress Responses and Tolerance
- Plant pathogens and resistance mechanisms
- Insect Utilization and Effects
- Cocoa and Sweet Potato Agronomy
- Fisheries and Aquaculture Studies
- Groundwater and Watershed Analysis
- Rabies epidemiology and control
- Plant Growth Enhancement Techniques
- Social Issues and Policies in Latin America
- Wildlife Ecology and Conservation
- Bird parasitology and diseases
Universidad Técnica Estatal de Quevedo
2016-2025
Pronatura Noroeste
2015-2017
Consejo Superior de Investigaciones Científicas
2007-2009
La presente investigación tuvo como objetivo evaluar el efecto de cinco cepas Pseudomonas spp. (P. putida BMR 2-4, P. PB 3-6, BO 4-4, protegens CHAO y veronii R4) en crecimiento desarrollo radicular plantas Nicotiana tabacum L. Para ello, se realizaron inoculaciones cultivadas bajo condiciones controladas invernadero, midieron las variables peso fresco, longitud raíz, pelos radiculares área radicular. metodología incluyó un diseño experimental al azar con control sin inoculante. Los...
Nylanderia fulva is an aggressive invasive ant that has entered continental Ecuador and constitutes ecological economic threat because it reduces arthropod diversity, especially in native assemblages. In the present work, potential geographic distribution of N. was modeled to identify areas greatest risk for its invasion. Records ant's presence worldwide were compiled with maximum entropy algorithm using bioclimatic variables. The favorable area ~110 227 km2, distributed a large part Coastal...
Mortality from vibriosis in mollusk production is attributed to pathogenic bacteria, particularly Vibrio alginolyticus. Use of increasingly potent antibiotics has led bacterial resistance and increased pathogenicity. Alternatives sanitation, safety, environmental sustainability are currently under analysis. To-date, homeopathy been investigated aquaculture freshwater fish, but not marine mollusks. The effect the homeopathic complexes growth, survival, immune response Catarina scallop...
La calidad del agua en las cuencas hídricas depende de varios factores y Ecuador muchos ríos se encuentran contaminados por impacto antrópico. Este estudio evaluó la influencia diferentes usos suelo fragmentación paisaje sobre características físicas químicas río Teaone, Ecuador. Se ubicaron ocho puntos muestreo uso (ganadería, sistemas agroforestales, bosques zonas urbanas) donde midieron temperatura, turbiedad, sólidos disueltos totales (SDT), pH, conductividad eléctrica, oxígeno disuelto...
In bivalve aquaculture, selecting suitable probiotic treatments can be crucial for improving hatchery-rearing of larvae and juveniles. We assessed the potential five bacterial strains, previously selected in vitro, to improve survival, growth resistance catarina scallop Argopecten ventricosus during early late larval juvenile developmental stages, as well exposure pathogen Vibrio alginolyticus. Hatchery-reared juveniles were treated with eight single or combined strains Bacillus...
Marine bivalve hatchery productivity is continuously challenged by apparition and propagation of new diseases, mainly those related to vibriosis. Disinfectants antibiotics are frequently overused prevent pathogen presence, generating a potential negative impact on the environment. Recently, use highly diluted compounds with immunostimulant properties in marine organisms has been trailed successfully activate self-protection mechanisms bivalves. Despite their as immunostimulants, little known...
We isolated microbiota from the digestive tract of Nodipecten subnodosus and Pteria sterna determined in vitro their haemolytic activity, antagonism against Vibrio spp., bacterial hydrophobicity, production extracellular enzymes molecular identification. Five strains were selected: RL5 C3 (Lactobacillus spp.) PB1-1, PB1-5 PB1-6 (Bacillus spp.). The isolates showed antimicrobial activity spp. enzymatic for amylase, protease, lipase cellulose; highly hydrophobic. selected bacteria tested vivo...
The future of the bivalve mollusk production sector worldwide is still challenged by emergence and propagation new diseases, mainly vibriosis, conventional methods that have been used to eradicate pathogens from hatcheries, such as antibiotics chemotherapies shown collateral effects.In order reduce use methods, homeopathy for aquaculture emerges a novel solution strengthen marine organism's defense against diseases.This study evaluated effect five homeopathic treatments on immunomodulatory...
Objetivo. Evaluar el efecto de medicamentos homeopáticos sobre la supervivencia y actividad enzima superóxido dismutasa (SOD) del camarón Litopenaeus vannamei sometido a infección con Vibrio parahamolyticus. Materiales Métodos. Se determinó dosis letal media (DL50) para cepa patógena en juveniles L. vannamei, bajo los método inmersión (Inm), inyección (Iny) e incisión + (Inc+Inm).Luego cuatro retados parahaemolyticus fue evaluado usando índice SOD. aplicaron tratamientos: (1) Mezcla CIB®-HOM...
Currently, the international scientif ic community is increasingly promoting use of alternatives eco-friendly to environment solve agricultural problems, such as soil salinization. The homeopathy, one these alternatives, has increased because its safety and proven effectiveness. This study assessed effect attenuating salinity stress (NaCl) homeopathic medicine Natrum muriaticum (NaM) on photosynthetic rate (TF) morphometric variables common bean plant (Phaseolus vulgaris L.) variety white...
Ultra-diluted bioactive compounds have emerged as an alternative to enhance marine organism performance and improve broodstock gonad maturation. This study evaluated for the first time effect of three homeopathically ultra-diluted (HUBC's) authorized by health authority medicines humans, on general reproductive physiology Argopecten ventricosus, a commercially important scallop species. The experiment included HUBC's treatments at centesimal dilution assessed in triplicate under laboratory...
Abstract Highly diluted bioactive compounds (HDBC) and highly immunomodulatory (HDIC) are treatments that cover a wide variety of concentrations, starting from molar to yoctomolar concentrations or even lower where the presence nanoparticles has been detected. The prophylactic use these improved nutrition, growth, overall condition, defence mechanisms regulation increased marine organism survival during challenge against pathogens. HDBC used in organisms formulated Vibrio spp. lysates,...
Microalgae diets supplemented with cornstarch at a rate of 0.15% live weight to the conditioning broodstock and spat growth Pacific calico scallop Argopecten ventricosus were tested.To determine reproductive condition beginning end experiment, gonads adults analyzed by stereological methods.For juveniles, weekly percent increase was estimated from biomass volume.The microalgae diet Tisochrysis lutea Chaetoceros calcitrans, cornstarch, substantially improved status scallop, particularly...
The effect of homeopathic medicines on germination and initial growth Salicornia bigelovii (Torr.) was evaluated under controlled conditions. A completely randomized experimental design applied with three treatments, Natrum muriaticum 7CH (NaM-7CH); Phosphoricum acidum 13CH (PhA-13CH); 31CH (NaM-31CH); distilled water as control (AD) six replicates per treatment. response variables were the percentage rate, stem radicle length, fresh dry biomass aerial parts. An analysis variance subsequent...
The application of bioactive substances in a minimum dose is an alternative to reduce the harmful agrochemicals agriculture, particularly vegetables. objective this research was evaluate effect four homeopathic medicines during germination, emergence, and vegetative development cucumber plants (Cucumis sativus L.). experimental design included two centesimal dynamizations (7CH 13CH) Silicea terra (SiT), Natrum muriaticum (NaM), Magnesia phosphorica (MaP), Arsenicum album (ArA) control...
Objective. To study the effect of homeopathic medicines on growth, survival and gastrointestinal (GIT) microbiota Catarina scallop Argopecten ventricosus. Materials methods. Five treatments (T1) ViP-ViA 1D, (T2) 7C, (T3) AcF-MsS (T4) PhA-SiT (T5) ViT 31C three controls: (C1) diluted ethanol 1:99, (C2) diluted/succussed 1C (C3) distilled water were evaluated (21 days) in triplicate. Microbiota was analysed by sequencing V3-V5 region 16S rRNA genes. Results. The best growth shell-length...
Agrochemical use in horticultural cultivations generates negative effects, thus the need for searching to decrease or eliminate its by means of other less toxic techniques. Agricultural homeopathy represents an alternative ecological agriculture, impacting positively cultivation development. The effect four homeopathic medicines human were assessed two centesimal dynamizations (7CH and 13CH) [(Silicea Terra (SiT), Natrum muriaticum (NaM), Zincum phosphoricum (ZiP) Phosphoricum acidum (PhA)],...
The production of the turnip (Brassica napus L.) in Ecuador, depends largely on use agrochemicals, whose indiscriminate causes negative effects environment. Agricultural homeopathy has emerged as an ecological alternative to improve health status plants. In order help sustainable vegetables, effect two centesimal dynamics (7CH and 31CH) three homeopathic medicines for human was evaluated: Silicea terra (SiT), Natrum muriaticum (NaM) Phosphoricum acidum (PhA ), germination, emergence...
The response of Phaseolus vulgaris L. variety Quivican to the application homeopathic medicines as growth promoters was assessed during its initial plant development. A completely randomized experimental design applied with three treatments: TH1 [MgM-31CH (Magnesium metallicum 31 CH)], TH2 [MaMnP-3CH (Magnesium-Manganum phosphoricum)], TH3 [TH1 + TH2), and distilled water Control group. analyses showed best results in plants that received a significant increase (P ≤ 0.05) respect control...
En Ecuador las especies exóticas invasoras (EEI) provocan consecuencias negativas en los aspectos ecológicos, económicos y de seguridad alimentaria. Los agroecosistemas hacen parte sectores productivos a nivel mundial, pero son vulnerables sufrir invasiones biológicas por la constante actividad humana el traslado vegetación, tierra semillas, lo que deben ser constantemente monitoreados, pues desempeñan un papel importante economía al fuente empleo. El objetivo esta investigación fue evaluar...
espanolGrus canadensis nesiotes (grulla cubana) es una subespecie endemica de Cuba que se encuentra en peligro extincion. A pesar estar directamente relacionada con los humedales, no existen estudios contribuyan a su gestion y conservacion. Por ello, registraron parametros reproductivos la durante ocho temporadas reproductivas entre 2005 2015 un humedal Cuba; asimismo, modelo caracterizo distribucion geografica potencial las areas anidacion, analizo representacion dentro protegidas (AP)....