ÁREA DE ACTIVIDAD Y COMPORTAMIENTO DEL LAGARTO Tropidurus hispidus (Spix 1825) (SAURIA-TROPIDURIDAE) EN CERRO COLORADO. CUMANÁ, ESTADO SUCRE, VENEZUELA

El área de actividad y algunas pautas en el comportamiento de adultos del lagarto Tropidurus hispidus fueron estudiados en Cerro Colorado, estado Sucre, Venezuela. Para calcular el área de actividad se utilizaron los métodos del polígono convexo y el de la elipse. El área de actividad en los machos (334,81 m2) resultó ser cualitativamente mayor que el de las hembras (105,85 m2), no se detectaron diferencias significativas entre ambas. En las hembras entre el área de actividad y la masa corporal, se registró una relación negativa y significativa, pero no así en los machos. Se identificaron ocho pautas de posición, cinco de mantenimiento y siete de desplazamiento.   PALABRAS CLAVE: Tropidurus hispidus, área de actividad, comportamiento, noreste, Venezuela.   ABSTRACT Home range and other patterns of behavior of adult lizards, Tropidurus hispidus, were studied in their habitat in Cerro Colorado, state of Sucre, Venezuela. The minimum convex polygon method and that of the ellipse were used to calculate the lizards’ area of activity. Mean home range for males resulted qualitatively larger (334.81 m2) than that of females (105.85 m2). No significant differences were found. Home range negatively correlated with body mass in females but not in males. Twenty behavioral patterns were identified, eight of position, five of maintenance, and seven of locomotion.   KEY WORDS: Tropidurus hispidus, home range, behavior, northeastern Venezuela

HÁBITOS ALIMENTARIOS DEL LAGARTO Gonatodes vittatus (LICHTENSTEIN, 1856) (SAURIA: GEKKONIDAE) EN UN BOSQUE TROPÓFILO DEL ESTADO SUCRE, VENEZUELA.

Se evaluaron los hábitos alimentarios del lagarto Gonatodes vittatus de un bosque tropófilo de los alrededores de la Llanada Vieja, estado Sucre, Venezuela. La dieta se evaluó en los periodos de sequía y lluvia, utilizando los métodos de frecuencia de aparición y dominancia trófica en 64 estómagos para un total de 453 presas. Las presas más frecuentes fueron Hymenoptera Araneae, Coleoptera y Orthoptera, dominando Hymenoptera. En el periodo de sequía, Hymenoptera fue más frecuente y dominante. En el periodo de lluvia fueron muy frecuentes Hymenoptera, Coleoptera y Araneae. Los machos presentaron el mayor volumen estomacal en el periodo lluvioso. La similitud de la dieta de hembras y machos presentó diferencias entre los periodos climáticos. Los resultados indican que la especie es principalmente insectívora

FLORULA DE LA LAGUNA DE CHACOPATA, PENINSULA DE ARAYA, ESTADO SUCRE, VENEZUELA

Se presenta un estudio de las angiospermas (24 especies) litorales de la Laguna de Chacopata. La vegetación está claramente definida por un estrato superior arbóreo de manglares Avicennia germinans (L)L., Laguncularia racemosa (L.) Gaertn, f. y Rhizophora mangle L) y uno inferior de hierbas hidrófitas, halófilas y psamófilas asociadas (16 especies). En algunas áreas, cercanas a la laguna, 5 especies xerófilas se han establecido en la posición más elevada del gradiente salino. Se incluyen claves para familias y especies con ilustraciones de algunas de ellas.   PALABRAS CLAVES: Flora, manglar, laguna, halófila, hidrófita, psamófila, xerófila   ABSTRACT: Descriptions of littoral angiosperms (24 species) of the lagoon Chacopata are shown. The vegetation is clear defined by a high stratum of mangrove trees Avicennia germinans (L) L., Laguncularia racemosa (L.) Gaertn, f. y Rhizophora mangle L)) and a low stratum of associated hydrophytic and halophytic herbal (16 species). In some areas, close to these lagoons, 5 xerophytic species are found. Illustrations and keys to the families and species are shown.   KEY WORDS: Flora, mangrove, lagoon, halophytes, hidrophytes, psammophytes, xerophytes

Diagnosis of mycotoxigenic fungi instored grain corn

Fil: Maidana Ojeda, Marco. Universidad Autónoma Chapingo; México.Fil: Acosta Ramos, Marcelo. Universidad Autónoma Chapingo; México.Fil: Arámbula Villa, Gerónimo. Instituto Politécnico Nacional. Center for Research and Advanced Studies; México.Fil: Cabrera, María Graciela. Universidad Nacional del Nordeste; Argentina.Fungi in stored grains can cause harmful effects on the health of consumers due to the mycotoxins that they produce. aflatoxins are the most toxic and carcinogenic fungal metabolites that are frequently more found in nature. During 2014/2015 an investigation was conducted to analyze the interaction of storage conditions with the incidence of mycotoxigenic fungi and aflatoxin concentration in stored grain corn. 27 samples of stored corn grain from the main producers states of Mexico were taken, and the conditions in which they were stored were registered. Fungi and aflatoxins incidence were quantified in laboratory, and the interaction effect of seed conditions with those parameters. High incidence of Fusarium and Aspergillus species were found, with 32 and 8% respectively, but with low levels of Aflatoxins. Also, we found influence between the levels of aflatoxins with the storage time and Aspergillus incidence. A high influence of grain moisture and volumetric weight with Aspergillus incidence was observed. Also we found an influence with the level of aflatoxins, storage time and Aspergillus incidence

Diagnosis of mycotoxigenic fungi instored grain corn

Fungi in stored grains can cause harmful effects on the health of consumers due to the mycotoxins that they produce. aflatoxins are the most toxic and carcinogenic fungal metabolites that are frequently more found in nature. During 2014/2015 an investigation was conducted to analyze the interaction of storage conditions with the incidence of mycotoxigenic fungi and aflatoxin concentration in stored grain corn. 27 samples of stored corn grain from the main producers states of Mexico were taken, and the conditions in which they were stored were registered. Fungi and aflatoxins incidence were quantified in laboratory, and the interaction effect of seed conditions with those parameters. High incidence of Fusarium and Aspergillus species were found, with 32 and 8% respectively, but with low levels of Aflatoxins. Also, we found influence between the levels of aflatoxins with the storage time and Aspergillus incidence. A high influence of grain moisture and volumetric weight with Aspergillus incidence was observed. Also we found an influence with the level of aflatoxins, storage time and Aspergillus incidence

HÁBITOS ALIMENTARIOS DEL LAGARTO NOCTURNO Phyllodactylus ventralis (O’SHAUGHNESSY, 1875) (SAURIA: GEKKONIDAE) EN UN BOSQUE TROPÓFILO DEL ESTADO SUCRE, VENEZUELA

RESUMENSe evaluaron los hábitos alimentarios y la similitud de la dieta entre sexos de Phyllodactylus ventralis, mediante el método de frecuencia de aparición y dominancia trófica, abarcando períodos de sequía y lluvia. La captura se realizo en un bosque tropófilo de los alrededores de la Llanada Vieja, estado Sucre, Venezuela. Se analizaron 35 estómagos, encontrándose un total de 91 presas. En ambos períodos existe una mayor frecuencia y dominancia trófica de Coleoptera adulto, Araneae, Hymenoptera y Homoptera. La dieta de hembras y machos presentó diferencias en la frecuencia y dominancia de los ítems consumidos y el mayor volumen estomacal se observó en los machos. Los resultados sugieren que la especie es principalmente insectívora.SUMMARYFood habits and similarity of diets between sexes of Phyllodactylus ventralis were evaluated by the ocurrency frequency and the trophic dominance methods during periods of rain and drought in a tropophic forest in La Llanada Vieja, Sucre State, Venezuela. Ninety-five prey items were identified in 35 stomachs analyzed. Frequencies and dominances for both periods were high for the prey items adult Coleoptera, Araneae, Hymenoptera, and Homoptera. Although males showed had higher stomach volumes values than females, males and females showed differences in frequency and dominance of prey items consumed. Results suggest the species is mainly insectivorous

El desarrollo del pensamiento matemático básico del nivel Medio Superior con Khan Academy, en el Centro de Estudios Tecnológicos del Mar No. 19, Frontera, Tabasco [Presentación en congreso]

Este estudio profundiza en la aplicación de la plataforma Khan Academy para mejorar el Pensamiento Matemático en estudiantes de primer semestre del CETMar No. 19 de Frontera, Tabasco, como respuesta a los desafiantes resultados en matemáticas del PLANEA Media Superior 2022. Analiza el rendimiento previo y actual, integra tecnologías educativas en la currícula, y evalúa el impacto de estas estrategias en el aprovechamiento académico, proporcionando un plan de acción replicable para instituciones de educación media superior enfrentadas a retos similares. Destacando términos clave como Pensamiento Matemático , Rendimiento Académico , Khan Academy , y Tecnologías de la Información en Educación ,https://digitalcommons.njit.edu/stemresources/1059/thumbnail.jp

New-onset geriatric epilepsy in a Latin American country: a multi-centric study from Mexico

Background: In Latin America, epilepsy in the elderly is a neglected issue that has never been studied. The epidemiological transition has significantly altered the demographics of epilepsy, and therefore, we would like to draw attention to this topic. Objective: We require local real-world evidence, as the literature often depicts a different scenario, including pharmacological management. Methods: From 2007 to 2018, we recruited all patients with new-onset geriatric epilepsy (first seizure after the age of 60) tracked from ten Mexican hospitals, adding them to patients with similar characteristics from a previously published study. The diagnosis was confirmed in all patients by a certified neurologist, and they were also studied using a conventional electroencephalogram and imaging workup. Results: A diagnosis of new-onset geriatric epilepsy (Elderly patients was established in 100 cases. No specific cause was found in 26% of patients, while 42% had a stroke and 10% had neurocysticercosis (NCC). Monotherapy was the choice in 83 patients, and phenytoin was the most used drug (50%), followed by carbamazepine (25%). Conclusion: NCC remains a frequent cause of new-onset geriatric epilepsy. This distribution is not seen in the literature, mainly representing patients from wealthy economies. In our setting, financial constraints influence the choice of the drug, and newer antiepileptic drugs should be made more affordable to this population with economic and physical frailty