
Leonardo Alberto Ríos-OsorioUniversity of Antioquia | UdeA · Escuela de Microbiología
Leonardo Alberto Ríos-Osorio
PhD
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Publications (118)
p> Background. Bioremediation of soils contaminated with heavy metals is a vital area of research given the growing concern about environmental contamination. However, understanding of the ability of Cannabis sativa for this task has been limited. Objective . undertake a thorough analysis of the existing scientific literature to assess the role of...
p> Background: The sociodemographic characterization of milk producers allows knowing their particular conditions in terms of social, political and economic structure through indicators that describe them as social actors, interaction networks, conflict situations and events related to milk production. Objective: To characterize the diversity of da...
The excessive and irrational use of antibiotics to control bovine mastitis and the informal trade in milk with antibiotic residues are objects of great interest for public health, due to the problems associated with the consumption of milk with antibiotic residues on human, animal, and environmental health, and antibiotic resistance. The objective...
p> Background. The agroforestry parcels are processes of ecological succession that, through technical activities applied to the soil, the areas intervened by the intensive mining operation of deep alluvium are recovered and adapted to biodiverse areas that transform the intervened landscape into productive and environmentally healthy areas with a...
Los residuos agroindustriales son una problemática a nivel mundial ya que pueden producir contaminación de los cuerpos de agua o lixiviados al ser desechados en los rellenos sanitarios. Estos residuos, como las cáscaras de algunos frutos, son muy ricos en pectinas que no pueden ser fácilmente fermentables por levaduras como la Saccharomyces cerevis...
Introducción: Los biofertilizantes son productos de origen natural, cuya composición principal son microorganismos que provienen de una matriz ambiental en particular, y que tienen la capacidad de solubilizar o metabolizar diferentes compuestos orgánicos e inorgánicos favoreciendo la disponibilidad y captación de estos en el suelo por parte de las...
Understanding trust between dairy farmers and other actors in the dairy chain, as well as the reciprocity norms among them are fundamental to encouraging collective action and decision-making to improve milk production and udder health. The objective of this study was to understand the relationships of trust between dairy farmers and other actors i...
The excessive and irrational use of antimicrobials for the control of bovine mas-titis has been the subject of study throughout the world for many decades. Currently, the use of antimicrobials in livestock is of great interest from the "One Health" approach. Scientific research has revealed that the reasons for the inappropriate use of antimicrobia...
Background. The Fan of Ibagué is one of the most important livestock and agricultural regions in the country, which faces a sustainability crisis and whose origins can be a critical point for understanding it. Objective. To understand the historical processes of settlement of the Ibague fan and the development of the rice and livestock industries i...
This study aimed to determine the frequency of Babesia spp. infection in cattle, livestock farmers, and patients with acute febrile illness (AFI) from the Magdalena Medio region in Colombia using molecular and serological methods. PCR detected Babesia in 83.9% (161/192) of cattle and 14.8% (21/143) of farmers tested. Molecular analysis based on eig...
Background and Aim: Vector-borne diseases (VBDs) constitute a global problem for humans and animals. Knowledge related to the spatial distribution of various species of vectors and their relationship with the environment where they develop is essential to understand the current risk of VBDs and for planning surveillance and control strategies in th...
Cyanobacterial harmful algal blooms (CyanoHABs) in lentic, low tidal water bodies with high concentrations of easily assimilated nutrients have generated worldwide concern. However, CyanoHABs often formed from a variety of lesser-known taxa, such as nanocyanobacteria and picocyanobacteria, which are characterized as numerous and ubiquitous in diver...
p> Background: Dairy industry economics and public health are negatively impacted when udder health is compromised. Intramammary infection is the most important infectious problem generating economic losses to the milk production systems around the world. Affectations of animal generated diseases on public health are well known. Several categories...
Background and aim:
Udder health management is essential for the further development of milk production systems and public health. This process depends on the generation of knowledge regarding control, prevention, and promotion of health. In scientific literature, it is impossible to find a synthesis of the categories that would allow comprehensio...
Tick infestation affects about 80% of livestock globally while transmitting various pathogens causing high economic losses. This study aimed to determine the degree of tick infestation in two regions, North and Middle Magdalena in Antioquia, Colombia, to identify the ixodid tick species found and the associated risk factors. A cross-sectional study...
Background. In Colombia, people have intended to increase food production by using new alternatives in under-used areas, such as the dry Caribbean soils, where practical evaluation methods for cultivated soils are required. Objective. To evaluate the association and reliability of in situ methods to measure soil quality indicators, in comparison to...
Introducción: las cianobacterias poseen la capacidad de fijar nitrógeno, producir vitaminas y aminoácidos que estimulan el crecimiento vegetal, particularmente forman asociaciones con plantas vasculares y no vasculares, actuando como biofertilizantes, y convirtiéndose en una alternativa para disminuir la aplicación de agroquímicos que afectan la ca...
Introduction:
The prevalence of occupational diseases in the agricultural sector is higher than in other industries, since agricultural workers are at higher risk of exposure to different chemicals and pesticides, and are more prone to occupational accidents.
Objective:
To conduct a review of recent literature on occupational health and risk in ag...
Agroecology was born as a competing theory to sciences derived from the Green Revolution like conventional agronomy or modernized animal husbandry. In recent years, several theoretical models or approaches have been developed in order to explain this science. However, any of them can explain its change or difference with its rival theories in a rat...
Background and Aims. An excessive and prolonged use of fertilizers undermines soils’ quality and, consequently, that of the crops they support, thus reducing the content of organic matter and generating environmental damages and problems to human health. Therefore, the use of biofertilizers such as cyanobacteria becomes a promising alternative. How...
Coxiella burnetii causes Q fever in humans and coxiellosis in animals. In humans, it causes acute febrile illnesses like influenza, pneumonia, hepatitis, and chronic illnesses such as endocarditis, vascular infection, and post-infectious fatigue syndrome. It is widely distributed worldwide, and its main reservoirs are sheep, goats, and cattle. This...
p> Background. In Colombia, people have intended to increase food production by using new alternatives in under-used areas, such as the dry Caribbean soils, where practical evaluation methods for cultivated soils are required. Objective. To evaluate the association and reliability of in situ methods to measure soil quality indicators, in comparison...
La educación para el desarrollo sostenible tiene el propósito de generar cambios en los conocimientos, las actitudes y las prácticas de las personas, para promover transiciones hacia la sostenibilidad. Los estudios de Conocimientos Actitudes y Prácticas (CAP) pueden ser una herramienta útil, oportuna y pertinente, para valorar los logros de la educ...
p>The mango ( Mangifera indica L.) is one of the most produced tropical fruits in the world, however, during post-harvest it is affected by pathogens such as Colletotrichum gloeosporioides , which causes mango anthracnose. Synthetic fungicides are generally used to control this disease, but prolonged use can cause health and environmental effects;...
Introduction: According to the World Health Organization, livestock farming is one of the anthropic activities in which workers are exposed to various zoonotic agents.
Objectives: To establish the frequency of seropositivity (IgG antibodies) against some zoonotic agents in people with occupational exposure to livestock in San Pedro de los Milagros...
Introducción: el objetivo de esta investigación fue describir el papel de los hongos micorrízicos en los procesos de biorremediación de suelos contaminados con metales pesados a partir de una revisión sistemá-tica de la literatura científica. Métodos: se realizó una revisión sistemática de la literatura científica publicada entre 2003 y 2014 en las...
Introducción: En el mundo actual de la industria de alimentos una de las obligaciones más importantes es poder garantizar la inocuidad de los productos; por esto, se hace necesario el uso de conservantes. El conservante natural de mayor potencial utilizado en matrices alimentarias es la nisina, siendo un péptido antimicrobiano producido por cepas d...
Introducción: los lodos activados son utilizados comúnmente durante el tratamiento de aguas residuales municipales e industriales, donde los microorganismos convierten sustancias orgánicas (sustrato) en CO2 y H2O a través de la respiración aeróbica. Existen diferentes parámetros físico-químicos que pueden influir en la calidad de los lodos como los...
Bacteria belonging to Anaplasma, Ehrlichia, Rickettsia and Coxiella genera are considered emerging pathogens and livestock is one of the contexts where the transmission of these microorganisms can occur. The goal of this study was to determine serological evidence for the exposure to these bacteria in cattle and humans with occupational exposure to...
This research was carried out in the Porce river basin, Antioquia (Colombia) with nine coffee growing families in charge of conventional systems and in transition to the organic production of coffee. The farms were characterized from an agroecological perspective, while evaluating the social, economic and technical-productive dimensions. It was det...
For any transition towards sustainability to be successful, it is necessary to understand the knowledge, attitudes and practices (KAP) – related to sustainability – in different populations. A systematic review was conducted to identify and analyse KAP studies on sustainability that were reported in the scientific literature during the period of 19...
Studies on the physical and chemical effects of extensive grazing on soils have been performed in Colombia, but the effects of dairy cattle rearing on the biological properties of soils are not well known. The objective of this study was to evaluate microorganisms in 48 soils from livestock farms in the highland and lowland tropics in the Northern...
The term ‘sustainability science’ has been employed to refer to a scientific trend, movement or program aimed at studying problems related to human–nature interactions. However, since it does not have its own set of principles for knowledge building and lack of a definition of a study object, sustainability science is not a science, at least in the...
Resumen Diversos autores han presentado a la agroecología como una ciencia que se funda en principios. No obstante, no existe un consenso alrededor de cuáles son y algunos de los que son formulados no se corresponden con lo que es un principio científico, mientras otros no están redactados de manera adecuada impidiendo determinar de manera clara cu...
En gran medida la investigación del espacio agrario se ha centrado en aspectos productivos y económicos de los agroecosistemas, sin embargo se requieren estudios y prácticas multidisciplinares con enfoque de sistemas complejos que integren aspectos sociales y ecológicos relacionados con la producción y con la vida en el campo. En este artículo se p...
Sustainability science has emerged as a research program and a scientific trend that directs all efforts to promote transition of societies toward sustainability. The style of research proposed to tackle unsustainability issues should be characterized by the application of a systems approach, as well as transdisciplinarity, participation, generatio...
Microbiology has contributed to sustainability through the study of microorganisms and their possible use in solving environmental problems. However, no studies have been reported that explore the problems, concepts, and branches of microbiology that are relevant when analyzing a corpus of sustainability studies related to microbiology. This study...
p>El fósforo, el nitrógeno, el hierro y el potasio son
algunos compuestos necesarios para el crecimiento
y desarrollo vegetal. Los fertilizantes químicos
empleados para aumentar su concentración afectan
significativamente el medioambiente y los ecosistemas
del suelo. De acuerdo con la literatura científica, los
microorganismos con potencial biofert...
Bovine trypanosomiasis is a hemoparasitic disease transmitted in Latin America mainly by biting flies of the family Tabanidae. The study aimed to evaluate infection by Trypanosoma vivax and Trypanosoma evansi in cattle specialized in milk production on a farm and their potential vectors. A direct parasitological and entomological study was performe...
The aim of this paper was to characterize agroecological family units in the West of Santa Catarina/Brazil, with emphasis on milk production. Was using ethnographic tools and was do an integrative methodological approach with application of cross descriptive investigation methods using mixed tools, in six family units. The main characteristics of u...
Evaluación agroecológica de sistemas hortícolas de dos zonas del oriente antioqueño, Colombia Agroecological evaluation of horticultural systems of two zones in Eastern Antioquia, Colombia SILVIA JOSEFINA SILVA-LAYA 1 SIMÓN PÉREZ-MARTÍNEZ 2 LEONARDO ALBERTO RÍOS-OSORIO 3,4 Cultivo de hortalizas en el Oriente Antioqueño. Foto: S.J. Silva-Laya RESUME...
Introduction: Chlamydia trachomatis presents clinical consequences and it is barely studied in Colombia. Objective: To compare the C. trachomatis infection in Bogota and Medellin with specific frequencies by gender and age group, between 2012-2015. Methods: Descriptive study of multiple groups, with 1,660 people in Bogota and 1,087 in Medellin. Ant...
Introduction:
Chlamydia trachomatis presents clinical consequences and it is barely studied in Colombia.
Objective:
To compare the C. trachomatis infection in Bogotá and Medellín with specific frequencies by gender and age group, between 2012-2015.
Methods:
Descriptive study of multiple groups, with 1,660 people in Bogotá and 1,087 in Medellin...
A systematic review was conducted with the objective of determining the key concepts that are currently used in theoretical work in agroecology. They were obtained from titles and keywords of theoretical articles and books that included the term agroecology in the title. Fifteen terms with occurrences higher than three were obtained. They show that...
Introducción: Los hidrocarburos aromáticos policíclicos (HAP) son un tipo de contaminantes ambientales, formados a partir de la ignición incompleta de los combustibles fósiles, durante eventos naturales y/o actividades humanas; por tanto están siendo constantemente acumulados en el ambiente. La principal forma de eliminar estos HAP es mediante la b...
Este artículo es el resultado de investigación realizada a 87 empresas que reportaron bajo la metodología Global Reporting Initiative (GRI) G4, capítulo Colombia, entre el 01 de enero y 31 de diciembre del año 2015 con el objetivo de describir el nivel de sostenibilidad social, económica y ambiental, teniendo en cuenta el concepto definido por ella...
Pollination is an essential processfor the correct performance ofecosystems andfood production, and has been extremely affected by human activities; understanding this process has been the subject of an increasing number of studies. The purpose of this work is to describe the key functions ofpollinators and their effects through a systematic review...
Introducción.
Uno de los mayores avances en microbiología ha sido el conocimiento del crecimiento de microorganismos sobre diferentes superficies, formando biopelículas, en donde su comportamiento y fisiología es significativamente diferente de aquellos microorganismos que crecen de forma individual o planctónica. En este estudio se describen las p...
p>Las garrapatas duras son ectoparásitos hematófagos de la familia Ixodidae. Estos ácaros han sido considerados siempre como agentes disruptores de los sistemas ganaderos, en los que se les reconoce como causantes de pérdidas económicas y productivas. Sin embargo, su función ecológica es importante para el equilibrio dinámico del sistema de producc...
Para citar este artículo: Polanco-Echeverry DN, Ríos-Osorio LA. Aspectos biológicos y ecológicos de las garrapatas duras. Corpoica Cienc Tecnol Agropecuaria. 17(1):81-95 Resumen Las garrapatas duras son ectoparásitos hematófagos de la familia Ixodidae. Estos ácaros han sido considerados siempre como agentes disruptores de los sistemas ganaderos, en...
Este trabajo de investigación tuvo como objetivo indagar por los conocimientos, actitudes y prácticas sobre Responsabilidad Social Empresarial (RSE) en las pymes del sector aseo en el Área Metropolitana de Medellín. Para realizar este trabajo se elaboró un instrumento tipo encuesta basado en la norma ISO 26000 aplicado a los representantes de 24 em...
The purpose of this paper was to conduct a systematic review of indicators to study and evaluate agro coffee smallholders. Within the found literature, two frames of reference were observed: the technical-environmental areas in which indicators and practical protection of the environment and production are derived; and social areas with indicators...
El objetivo del estudio fue determinar la prevalencia de nematodos gastrointestinales en sistemas de producción de ganado ovino y caprino en el trópico de Antioquia, Colombia, mediante un estudio descriptivo transversal. Se incluyeron 17 apriscos de 9 municipios y 302 animales (ovejas y cabras). Se evaluó la frecuencia de parasitismo gastrointestin...
El objetivo de esta investigación fue caracterizar agroecológicamente, los sistemas de producción de cacao en el municipio de Tumaco – Pacífico colombiano, tanto sistemas de producción tradicional como convencional. La metodología diseñada se basó en un análisis de contexto donde todas las dimensiones de la sostenibilidad proporcionaron una mirada...
The aim of this research was the agroecological characterization of the cocoa crop production systems in the municipality of Tumaco - Nariño, Colombian Pacific. Both traditional and conventional production systems. The methodology designed was based on the analysis of context where all dimensions of sustainability provided a holistic view of realit...
The objective of this research was to propose a theoretical model of agroecological process as a tool to understand the socio-ecological dynamics in family units. The study was conducted under the approach of complex systems for studies of socio-ecological systems through the use of mixed methods with theoretical and empirical bases, by following t...
Scholars have established sustainability as the goal of environmental sciences. The objective of this research was to establish definitions regarding the concept of sustainability and its place within agroecology theory. For that, a systematic review was conducted in global scientific databases, complemented with specialized journals and books. It...
Dentro de la teoría de las ciencias ambientales, se ha dicho que ellas tienen como propósito lograr la sostenibilidad de diferentes sistemas de referencia. El objetivo de la presente investigación es determinar los planteamientos que existen alrededor de la sostenibilidad y su lugar dentro de la teoría agroecológica. Se realizó una revisión sistemá...
Cattle ranching systems have traditionally been studied based on Cartesian research models that break them down into each of their constitutive parts. For this reason, definition of biophysical and technical-productive parameters dominates knowledge in this area, but does not allow a complex vision of the production systems to be obtained. The emer...
En Colombia poco se han estudiado las parasitosis intestinales en caninos, y los perros de la calle constituyen un grupo de elevado riesgo para la adquisición de enfermedades zoonóticas parasitarias. Por medio de un estudio descriptivo transversal realizado en 2014 se determinó la prevalencia de parasitosis intestinal en 68 caninos de ambos sexos d...
Agroecology proposes a new epistemological and methodological paradigm to understand the reality of farming and livestock production systems that are in turn nature-society systems. The research questions around these have traditionally been resolved from two methodological approaches: quantitative and qualitative. Although each complements the oth...
Relacionar el estado nutricional y los niveles de inmunoglobulinas
y citocinas en niños maláricos de dos zonas
con diferente riesgo para malaria.
Agroecology makes its appearance as a science that seeks epistemological bases different from those of conventional science. However, literature has not been reviewed nor have theoretical reflections been written that explicitly establish the alternatives proposed in agroecology. The objective of this essay was to determine the principal epistemolo...
Esta investigación tuvo como objetivo analizar diferentes agroecosistemas existentes en una región del departamento de Putumayo (Colombia) y su relación sociocultural con los contextos productivos y de conservación del territorio, con base en los elementos conceptuales y metodológicos que ofrece la agroecología. Para ello se diseñó un estudio de mé...
El artículo describe las tendencias que en Responsabilidad Social Universitaria están implementando las Instituciones de Educación Superior (IES) de distintas partes del mundo, sean de carácter público o privado. El objetivo de este trabajo fue describir los diferentes enfoques y estrategias de implementación de la Responsabilidad Social Universita...
In Colombia, there are very few studies about intestinal parasitosis in dogs, and street dogs constitute a high-risk group for the acquisition of parasitic zoonotic diseases. Through a cross-sectional descriptive study carried out in 2014, the prevalence of intestinal parasitosis and its associated factors were determined in 68 dogs of both sexes f...
Introduction: it has been reported, in Latin America, highs parasitism prevalent activities in indigenous communities, considered as a health public problem. In Colombia, studies in these offerings are few, but these studies show similar prevalence. Objective: To determine the general and specific gastrointestinal parasite prevalence, and related f...
En Colombia son exiguas las investigaciones sobre ehrlichiosis canina y en Medellín son nulas. Esta investigación tuvo como objetivo determinar la seroprevalencia de Ehrlichia canis y su distribución según sexo, edad, raza y tamaño en caninos diagnosticados en un laboratorio veterinario de Medellín, entre 2012 y 2014. Para ello se diseñó un estudio...
Introduction: Imported malaria is a problem of public and individual health, due to its high mortality and presentation of nonspecific signs and symptoms that hinder early diagnosis and timely treatment. Objective: To characterize the distribution of imported malaria cases in nonendemic municipality of Northeast of Antioquia, 2008-20013. Methods: C...
Research is meager on canine ehrlichiosis in Colombia and it is absent in Medellín. This research aims to determine the seroprevalence of Ehrlichia canis and its distribution by sex, age, race and size in dogs diagnosed in a veterinary laboratory in Medellín, between 2012 and 2014. To the effect, a cross-sectional study was designed in 781 dogs. Ov...
El objetivo de esta investigación fue analizar la sostenibilidad de la política de control de malariaen el municipio de El Bagre durante el año 2011. Se llevó a cabo un estudio de diseño mixtode modelo dominante CUAL→cuan, de carácter exploratorio. Se hicieron catorce entrevistasy una revisión documental, para identificar procesos sociales y ecológ...
Introducción En los ecosistemas acuáticos, el intercambio de agua ya no se considera una opción adecuada para la gestión en la acuicultura, siendo entonces el interés particular evitar este recambio de agua en la generación de compuestos que contienen nitrógeno, la mejor opción para lograr evitar este recambio de agua es el ciclo biológico del nitr...
This reflective theoretical article seeks to continue the discussion on an epistemological approach in which agroecology is circumscribed as a science of complexity, transdisciplinary and systemic in nature, aimed at responding to the problems of agroecosystems. To do this, the socio-ecological resilience is proposed as an object of study and the a...
Babesia sp. is a protozoan hemoparasite that affects livestock worldwide. The Colombian Middle Magdalena is an enzootic region for babesiosis, but there is no previous research providing detail on its transmission cycle. This study aims to assess some Babesia sp. infection indicators in cattle and ticks from the area, by using direct microscopic an...
Introducción La babesiosis bovina es una infección causada por un hemoparásito del género Babesia, el cual es transmitido por garrapatas Rhipicephalus (Boophilus) microplus. En la dinámica de transmisión del parásito se tienen en cuenta las condiciones geográficas, ambientales y epidemiológicas de la zona en estudio, factores indispensables para co...
Dentro de diferentes campos académicos, como los de corte ecologista o posmoderno, se han hecho fuertes críticas a las bases epistemológicas de la ciencia moderna convencional. Sin embargo, dichas bases se encuentran esparcidas en la literatura con pocos intentos de presentarlas de manera sistemática y relativamente completa. En consecuencia, el pr...
RESUMEN
Objetivo. Determinar la frecuencia de infección por nemátodos gastrointestinales en ovinos y caprinos de apriscos de algunos municipios de Antioquia. Materiales y métodos. Estudio descriptivo de corte realizado entre febrero y junio del 2011 en muestras de materia fecal de 84 caprinos y 11 ovinos distribuidos entre 2 y 132 meses de edad en...
Objetivo. Determinar la frecuencia de infección por nemátodos gastrointestinales en ovinos y caprinos de apriscos de algunos municipios de Antioquia. Materiales y métodos. Estudio descriptivo de corte realizado entre febrero y junio del 2011 en muestras de materia fecal de 84 caprinos y 11 ovinos distribuidos entre 2 y 132 meses de edad en 6 aprisc...
La transición hacia la sostenibilidad es el conjunto de cambios y decisiones que toma un grupo humano para resolver problemas de insostenibilidad. Para encarar estos problemas ha surgido una tendencia científica denominada ciencia de la sostenibilidad, la cual se ha considerado que debe ser una ciencia inspirada en el uso del conocimiento y debe te...
Sustainability science is at an early stage of development. Among many other obstacles, there are two prominent issues hindering its advance. There is both a lack of a set of principles for knowledge construction, and a need to implement research to solve real problems. This paper proposes a typology of scientific reflections for meeting these two...