David R . Aguillón-Gutiérrez | Universidad Autónoma de Coahuila (original) (raw)

Papers by David R . Aguillón-Gutiérrez

JOURNAL OF ADVANCED VETERINARY AND ANIMAL RESEARCH, 2024

The objectives of this study were to determine the richness, abundance, and diversity of bacteria... more The objectives of this study were to determine the richness, abundance, and diversity of bacteria in stray dogs (Canis lupus familiaris) infested by ticks in Comarca Lagunera, northern Mexico, and to establish their pathogenic and or/zoonotic potential. Materials and Methods: Blood samples from 12 dogs were collected, and their deoxyribonucleic acid was extracted. The V3-V4 region of the 16S ribosomal ribunocleic acid gene was amplified by polymerase chain reaction. Next-generation sequencing (NGS) was performed on a MiSeq Illumina platform, and the data were analyzed using quantitative insights into microbial ecology. Results: The operational taxonomic units resulted in 23 phyla, 54 classes, 89 orders, 189 families, 586 genera, and 620 bacterial species; among them, 64 species and/or bacterial genera with pathogenic or zoonotic potential were identified, some of which have been reported in the literature as relevant to public health (Anaplasma phagocytophilum, Brucella spp., Clostridium spp., Corynebacterium affermentants, Cutibacterium spp., Dietzia spp., Ehrlichia canis, Fusobacterium necrophorum, Leptotrichia spp., Mycobacterium spp., Paracoccus spp., and Roseomonas gilardii). Conclusion: This research offers relevant information on the prevalence of tick-borne diseases as well as other potential zoonotic diseases in the blood of stray dogs parasitized by ticks in northern Mexico. New molecular biology and massive NGS techniques may play an important role in the study and documentation of bacterial profiles from animals in close proximity to humans.

Foods, 2023

Protein malnutrition is present in developing countries but also in developed ones due to actual ... more Protein malnutrition is present in developing countries but also in developed ones due to
actual eating habits involving insufficient protein intake. In addition to this, it is estimated by the
Food and Agricultural Organization of the United Nations that the world’s population will increase
to 9.1 billion people in less than 30 years. This poses a significant challenge in terms of nourishing the
population. Different strategies have been proposed to address this challenge, including exploring
novel protein sources such as plants. For instance, Prosopis alba pods have an 85.5% protein content.
Other examples are microorganisms, such as Halobacillus adaensis which produces 571 U/mL of
protease, and insects such as those belonging to the Orthoptera order, like grasshoppers, which have
a protein content of 65.96%. These sources have been found in dry lands and are being explored to
address this challenge.

Áreas Naturales Protegidas Scripta, 2023

Actualmente se vive una crisis de la biodiversidad, donde desde el nivel genético hasta el ecosis... more Actualmente se vive una crisis de la biodiversidad, donde desde el nivel genético hasta el ecosistémico el número de elementos se ha visto disminuido por diversos factores. Difícilmente se pueden enfocar los esfuerzos de conservación a todas las especies, poblaciones, comunidades y ecosistemas que han sufrido algún grado de deterioro, por lo que es de suma importancia priorizar en base a criterios ecológicos, sociales y económicos aquellos objetos de conservación socioambiental que tengan características como importancia económica, riesgo de desaparecer o sean endémicas. El Parque Estatal Cañón de Fernández (PECF) es un área natural protegida reconocida como sitio RAMSAR, lo que significa que es un humedal designado como de importancia internacional, con la particularidad de encontrarse en una zona semiárida. A través de la estandarización de los métodos de CONANP (Comisión Nacional de Áreas Naturales protegidas) y TNC (The Nature Conservancy) se llegó a la conclusión de que los Objetos de Conservación Socioambiental (OCSA) prioritarios para el PECF son la Noa (Agave victoriae reginae [Moore, 1875]), la comunidad de cactáceas, el caudal ecológico y la pesca sustentable.

40, 2023

Actualmente, existe una creciente preocupación ya que algunas especies de anfibios han mostrado ... more Actualmente, existe una creciente preocupación ya que
algunas especies de anfibios han mostrado un declive en sus
poblaciones por causa de diversos factores, entre ellos los metales
pesados; por esta razón, es importante realizar estudios sobre esta
problemática ambiental. El objetivo de este estudio fue determinar la
cantidad del plomo y arsénico que se concentra en los tejidos de la rana
Africana de uñas (Xenopus laevis) en etapa juvenil y de la rana
Leopardo (Lithobates berlandieri) en etapa larvaria y en el agua
después de 16 semanas expuestas a placas de plomo y arseniato de
sodio, con la finalidad de determinar si esta acumulación de metales
provoca eventualmente anomalías morfológicas en su desarrollo. Los
individuos fueron puestos en contacto con placas de plomo, arseniato
de sodio, agua de la red de abastecimiento de agua de consumo público
(grupos experimentales) y con agua potable (grupo control). Los
organismos fueron inspeccionados de manera externa para identificar
anomalías macroscópicas, además de realizarles análisis
morfométricos. Los análisis espectroquímicos (espectrofotometría de
absorción atómica, con la técnica de horno de grafito) mostraron que
hay un proceso de bioconcentración y bioacumulación de metales
cuando los organismos están en contacto con estos metales y con agua
de la red de abastecimiento público, la cual está contaminada también,
pues se detectaron cantidades altas de metales en los tejidos de las
larvas. Respecto a la morfometría hubo diferencias significativas en
algunas estructuras entre el grupo control y los grupos experimentales
en X. laevis. En L. berlandieri fueron detectadas anomalías
macroscópicas como curvatura de la cola, problemas de pigmentación,
protuberancias en el abdomen e inadecuada posición de los intestinos
en aquellos individuos que estuvieron en contacto con estos metales
pesados.

Animal Biodiversity and Conservation

In the present study, we characterized species of bacteria and fungi across a frog community in a... more In the present study, we characterized species of bacteria and fungi across a frog community in a seasonal tropical environment in the Natural Protected Area (NPA) Las Musas, Guanajuato, Mexico, using morphological and biochemical protocols. Our three main objectives were to: i) identify the species of microorganisms present in the frog community, ii) determine microorganism prevalence and how it changes throughout the year, and iii) detect diseases and injuries caused by pathogens (bacteria and fungi). Across 150 anurans analyzed, seven species of anurans especies (Anaxyrus compactilis, Incilius occidentalis, Dryophytes arenicolor, D. eximius, Hypopachus variolosus, Lithobates neovolcanicus y Spea multiplicata) hosted at least four genera of pathogenic fungi (Penicillium, Rhizopus, Aspergillus y Batrachochytrium) and two genera of pathogenic bacteria (Aeromonas hydrophila and Pseudomonas sp.). We found the prevalence of positive cases was higher in autumn (0.51) than in summer (0.1...

Southwestern Entomologist, 2023

Resumen. El maíz, Zea mays L., es de gran importancia económica, social y cultural en México. Su ... more Resumen. El maíz, Zea mays L., es de gran importancia económica, social y cultural en México. Su agroecosistema posee insectos fitófagos y entomófagos. Se estudió la diversidad de éstos en la Comarca Lagunera en 2020 y 2021. Se identificaron 38 especies de insectos entomófagos, tanto depredadores como parasitoides, siendo las más comunes Bariscapus sp., Orius leavigatus, Tetrastichus sp., Hippodamia convergens, Chrysoperla sp., y Collops vittatus. Se ha reportado que este complejo de insectos entomófagos juega un papel importante en el control biológico natural de los insectos plaga. Se encontraron 26 especies de insectos fitófagos, siendo las más comunes Chaetocnema ectypa, Diabrotica balteata, Rhopalosiphum maidis, y Dalbulus maidis. Este complejo de insectos fitófagos puede estar desempeñando un papel importante como factor limitante de la productividad del maíz o ser plagas potenciales. Con base en los valores de los índices de diversidad de Margalef, Simpson y Shannon-Wiener se encontró que la diversidad de insectos entomófagos fue más alta al principio del ciclo del cultivo; mientras que la diversidad de insectos fitófagos fue mayor de mediados a finales del mismo; de forma general se considera que la diversidad de la entomofauna en maíz fue intermedia.

Revista de Biociencias, 2023

Plants traditionally used for medicinal use could be an alternative against SARS-CoV-2. In this s... more Plants traditionally used for medicinal use could be an alternative against SARS-CoV-2. In this study, the binding energy of 10 bioactive compounds of plants used in Mexico against COVID-19 was evaluated by molecular docking with two online servers: COVID-19 Docking Server and DockThor. Remdesivir was used as a control. The results showed that Cypellocarpin B, Cypellocarpin C, Luteolin 7-glucoside, and Syringetin glucopyranoside showed the highest binding energy towards Mpro and RdRp proteins with respect to Remdesivir. The comparison of molecular docking servers showed differences in the docking motors and proteins available on each server. The bioactive compounds evaluated can act as potential inhibitors against Mpro and RdRp proteins of COVID-19, according to in silico molecular docking.

Saudi Pharmaceutical Journal, 2023

This study is the first record of medicinal plants in the southwest of the Coahuila state, an ari... more This study is the first record of medicinal plants in the southwest of the Coahuila state, an arid zone where extreme dry conditions prevail. One hundred twenty-two residents (in sixteen communities) were interviewed. The residents were questioned with a questionnaire-guided ethnomedical survey protocol about the various plants used. Seventy-seven species of medicinal plants belonging to 36 botanical families were cited. The highest use-value (UV) was calculated for Lippia graveolens Kunth (0.30); Aloe vera (L.) Burm.f. (0.20); Eucalyptus abdita Brooker & Hopper, Chamaemelum nobile (L.) All. (0.16); Mentha spicata L. (0.15) and Salvia officinalis L. (0.10). Informant consensus factor (ICF) about usages of medicinal plants ranges from 0.41 to 0.80; the highest level of agreement was determined between the informants and Respiratory System Diseases (0.80). The highest fidelity level (FL) values (100%) were identified in Flourensia cernua DC., Artisia ludoviciana Nutt., and Parthenium incanum Kunth to Gastro-intestinal System Diseases; Eucalyptus abdita Brooker & Hopper, Bougainvillea berberidifolia Heimerl, and Lippia graveolens Kunth to Respiratory System Diseases (RSD) and Cyclolepis genistoides D.Don and Ephedra antisyphilitica Berland. ex C.A.Mey. to Obstetrics, Gynecology and Urinary tract Diseases. These last two medicinal plant species (''palo azul" and ''pitoreal") used by the rural communities in Viesca in the treatment of urinary tract infections and kidney stones have not been reported previously. These findings can provide new research directions for further phytochemical studies. The present study revealed that the residents are rich in ethno-medicinal knowledge and actively use medicinal plants to treat various diseases. New phytochemical and pharmacological research are needed to confirm the therapeutic potential and safety of the identified plants.

Animal Biodiversity and Conservation, 2023

Pathogens in anurans from a seasonal tropical environment in Guanajuato, Mexico. In the present s... more Pathogens in anurans from a seasonal tropical environment in Guanajuato, Mexico. In the present study, we characterized species of bacteria and fungi across a frog community in a seasonal tropical environment in the Natural Protected Area (NPA) Las Musas, Guanajuato, Mexico, using morphological and biochemical protocols. Our three main objectives were to: i) identify the species of microorganisms present in the frog community, ii) determine microorganism prevalence and how it changes throughout the year, and iii) detect diseases and injuries caused by pathogens (bacteria and fungi). Across 150 anurans analyzed, seven species of anurans especies (Anaxyrus compactilis, Incilius occidentalis, Dryophytes arenicolor, D. eximius, Hypopachus variolosus, Lithobates neovolcanicus y Spea multiplicata) hosted at least four genera of pathogenic fungi (Penicillium, Rhizopus, Aspergillus y Batrachochytrium) and two genera of pathogenic bacteria (Aeromonas hydrophila and Pseudomonas sp.). We found the prevalence of positive cases was higher in autumn (0.51) than in summer (0.125). Lesions such as peeling of the skin on the belly and swelling of the extremities (red leg) were observed in four of the seven species. This study confirms the presence of bacterial and fungal pathogenic agents in this frog community, and serves as a precedent for future work on monitoring the state of amphibian population health in Guanajuato. It also provides support for the implementation of conservation strategies for this group of vertebrates.

Biotecnia, 2023

Yerba mate (Ilex paraguariensis A.St. Hil) and jarilla (Larrea divaricata Cav.) leaves are commo... more Yerba mate (Ilex paraguariensis A.St. Hil) and jarilla
(Larrea divaricata Cav.) leaves are commonly used as tea infusions in some Latin American countries. This study was conducted to evaluate the antioxidant activity (FRAP, ABTS, and
DPPH) and the inhibitory potential of yerba mate and jarilla
extracts on the 3CL protease (Mpro) from coronavirus SARSCOV-2 by a molecular docking approach. The main bioactive
compounds present in the plant extracts were identified by
HPLC-MS. According to the results, the extracts of yerba mate
and jarilla showed high antioxidant activity in DPPH (> 91 %),
ABTS (> 90 %), and FRAP (> 47 mg TE/g) assays. Additionally,
the phenolic compounds present in yerba mate, quercetin3-O-rutinoside (rutin) (-9.60 kcal/mol) and 3,4-dicaffeoylquinic acid (- 8.20 kcal/mol) were more effective on Mpro than
the antiviral drugs remdesivir and ribavirin. The compounds
rutin and 3,4-dicaffeoylquinic acid have a high affinity and
interaction with one of the catalytic residues Cys145 of Mpro.
The glycosylation of phenolic compounds affects biological
activities: positively anti-COVID-19 and negatively antioxidant. The results suggest that extracts of yerba mate and
jarilla leaves could enhance the body’s antioxidant defenses
and can be used to improve health.

Abanico Veterinario

El objetivo del presente estudio fue estimar la prevalencia e identificar los parásitos con poten... more El objetivo del presente estudio fue estimar la prevalencia e identificar los parásitos con potencial zoonótico presentes en las heces fecales de perros domiciliarios y callejeros de Gómez Palacio, Durango, México. Se colectaron 50 muestras de heces fecales de perros domiciliarios, así como 50 muestras de heces fecales de perros callejeros. Las muestras se analizaron mediante las técnicas de flotación por sacarosa y de McMaster. Los análisis estadísticos mostraron diferencia significativa entre las prevalencias de perros domiciliarios y callejeros (p= 0.021). La mayor prevalencia la obtuvieron los perros callejeros con 22% (11/50), mientras que los perros domiciliarios obtuvieron una prevalencia del 6% (3/50). Los parásitos de perros domiciliarios identificados morfológicamente correspondieron a Cystoisospora canis (6%) y Trichuris vulpis (4%), mientras que los parásitos de perros callejeros correspondieron a Ancylostoma spp. (12%), Cystoisospora canis (10%), Toxocara spp. (4%), Trichuris vulpis (4%) y Taenia spp. (2%). El análisis de Chi-cuadrada (X2) mostró que la prevalencia de parásitos en perros callejeros presentó diferencia significativa entre edades (p= 0.002), el 100% de los cachorros resultó parasitado. En Gómez Palacio se encuentran parásitos con potencial zoonótico presentes en las heces de perros domiciliarios y callejeros lo que representa un riesgo de infección para la población humana.

Biología y Sociedad, 2021

La generación de conocimiento y productos académicos es el reflejo de la calidad de los investiga... more La generación de conocimiento y productos académicos es el reflejo de la calidad de los investigadores e instituciones. Sin embargo, debido al alto número de doctores egresados de los programas de doctorado y, a la limitada disponibilidad de plazas académicas en instituciones públicas y privadas, además de la falta de condiciones adecuadas para la jubilación de investigadores, el crecimiento de las líneas de generación y aplicación del conocimiento (LGAC), es limitado y, por lo tanto, la producción científica baja. En este escrito se hace una reflexión sobre la formación y la importancia de generar grupos académicos, llamados Cuerpos Académicos (CAs) de trabajo sólidos con metas comunes para plantear y resolver problemas enfocados a las LGAC del grupo. Cualquier resultado en la dinámica de los CAs, se implementa con la incorporación en estos a jóvenes investigadores a las instituciones, los que enriquecen y promueven nuevas LGAC, formación de recursos humanos y, por lo tanto, producción científica del CA de la institución. La formación académica de un alumno, desde la licenciatura, y especialmente en los niveles de posgrado, es fundamental para el estudiante, y con ello el cumplimiento de las actividades por parte de los investigadores (formación de recursos humanos). La dinámica continua de producción y colaboración de pares académicos dentro y fuera de la institución refuerza en muchos casos el conocimiento generado en el interior de los grupos. Esta actividad, se desarrolla mejor al incluir a investigadores jóvenes que generen conocimiento innovador, que fortalezca a cada investigador, al grupo de investigadores y, a las instituciones educativas. Las redes académicas apoyan el trabajo científico, especialmente los grupos multidisciplinarios que incorporan no solo investigadores nacionales, sino también internacionales. En la actualidad, solo queda que las autoridades reconozcan la necesidad de crear redes y mantenerlas económicamente para consolidarlas, así como la creación de programas y un mayor presupuesto para la incorporación y contratación de nuevos investigadores a ellas.

Scientia Fungorum, 2021

Antecedentes: A nivel mundial se han realizado varios estudios relacionados con macrohongos y met... more Antecedentes: A nivel mundial se han realizado varios estudios relacionados con macrohongos y metales pesados, pero en México existen pocos registros al respecto. Anteriormente en la zona de la Comarca Lagunera se han registrado niveles de metales pesados en diversos organismos. Objetivos: Este trabajo tiene como objetivo determinar la concentración de metales pesados (Cd, Cu, Pb y Zn) en especies fúngicas en la zona metropolitana de la Comarca Lagunera, México. Métodos: Se realizaron dos recolectas anuales (2017-2018) en 30 sitios pertenecientes a principales áreas verdes y avenidas de tres municipios de la Comarca Lagunera. La identificación de los ejemplares se realizó mediante técnicas de micología básica y literatura especializada. En cuanto a la medición de metales se empleó la espectroscopía de absorción atómica con aspiración directa. Resultados y conclusiones: Se obtuvieron un total de 32 muestras, pertenecientes a nueve especies. Los resultados mostraron concentraciones altas en las nueve especies analizadas, sobrepasando los parámetros de límites permisibles por estándares europeos.

Sylwan, 2020

In this study, concentrations of heavy metals (Ni, Cd, Pb, Cr, and Zn) were determined in water, ... more In this study, concentrations of heavy metals (Ni, Cd, Pb, Cr, and Zn) were determined in water, sediment and tissues (intestine, gills and liver) of the anuran amphibian Dryophytes plicatus (tadpoles) from a lake in Mineral El Chico, Hidalgo, Mexico. The metal concentrations were obtained by spectrochemical analysis. Results showed that in water, the concentration of Cd exceeded the maximum allowable concentration specified in the Mexican Official Standard on water quality. In sediments, the concentrations of Cd exceeded Environmental Protection Agency (USA-EPA) regulations. In tadpole tissues, concentrations of Cd and Zn were higher in the gills and concentrations of Ni, Pb and Cr were higher in the liver. No metal had its highest concentration in water or sediment, while all five metals (Ni, Cd, Pb, Cr and Zn) had their highest concentrations in tadpole tissues, so a biomagnification process is occurring. High concentrations of heavy metals put the survival of this species at risk.

As climate change marches on, rapidly rising temperatures shatter records every year, presenting ... more As climate change marches on, rapidly rising temperatures shatter records every year, presenting ever-growing physiological challenges to organisms worldwide. Ectotherms rely on behavioral and physiological plasticity to contend with environmental fluctuations. Nonetheless, our understanding of thermal plasticity has been largely limited to laboratory settings. Here, we test whether aspects of thermal physiology respond to interannual shifts in thermal environment in a natural population of Phrynosoma orbiculare, a montane horned lizard, from Hidalgo, Mexico. At our field site, 2019 was markedly warmer than the year that preceded it. We detected population-level increases in three key thermal physiological traits: preferred temperature, the critical thermal minimum, and the critical thermal maximum. Thus, thermal phenotypes appear to shift in tandem in response to environmental fluctuations. A subset of individuals were resampled across years, allowing insight into plastic shifts within an organism's lifetime. We detected parallel increases in these lizards for the preferred temperature and the critical thermal minimum, but not for the critical thermal maximum. Our results support a growing body of literature indicating that preferred conditions and cold tolerance can be highly labile over the course of an organism's lifetime, whereas hardening over shorter time periods is more common for heat tolerance. Given that heat tolerance increased at the population-level, but not in resampled individuals, it is possible that rapid evolution occurred due to temperature increases. In short, physiological shifts can be observed in natural populations over relatively short timespans, and these shifts might reflect a combination of evolutionary and acclimatory responses. K E Y W O R D S body temperature, critical thermal limits, phenotypic plasticity, physiological acclimatization, preferred body temperature, thermal physiology

Journal of Citology and Tissue Biology

The effects of bioregulators purified from mammalian blood serum and bone tissue on amphibian lim... more The effects of bioregulators purified from mammalian blood serum and bone tissue on amphibian limb regeneration have been studied. The bioregulators from blood serum at a high concentration (10-1 mg/mL) has a strong morphogenetic effect on Xenopus laevis limb regeneration following amputation through the proximal part of the femur and a protective effect on the tissues of newt (Pleurodeles waltl) limb regenerates cultured in a roller system. The bioregulators purified from the bone tissue at an ultralow concentration (10-12 mg/ mL) also has a strong protective effect on the cultured newt limb regenerates, especially with respect to the viability and structure of the cartilaginous tissue. The results show that hind limb regeneration in metamorphosing Xenopus laevis depends on the level of amputation along the proximodistal axis. Stimulation of limb regeneration by either of the bioregulators has been found to decrease with an increase in the regeneration capacity of amphibians.

Revista Mexicana de Biodiversidad, 2020

We present an updated checklist of native Mexican freshwater gastropods with data on their genera... more We present an updated checklist of native Mexican freshwater gastropods with data on their general distribution, hotspots of endemicity, threats, and for the first time, their estimated conservation status. The list contains 193 species, representing 13 families and 61 genera. Of these, 103 species (53.4%) and 12 genera are endemic to Mexico, and 75 species are considered local endemics because of their restricted distribution to very small areas. Using NatureServe Ranking, 9 species (4.7%) are considered possibly or presumably extinct, 40 (20.7%) are critically imperiled, 30 (15.5%) are imperiled, 15 (7.8%) are vulnerable and only 64 (33.2%) are currently stable. With 61 species in 21 genera, the Cochliopidae are the most diverse family, followed by the Planorbidae (37 species) and Pachychilidae (31). Pachychilus is the most species-rich genus with 30 species. Despite the high number of imperiled species (84), only 7 species (3.6%) are currently listed as endangered by the Mexican Secretariat of Environment and Natural Resources. We identified 3 hotspots and 2 potential centers of gastropod endemicity. Our research serves as a first step for determining priority areas for conservation of imperiled Mexican freshwater gastropods.

Boletín de la Sociedad Geológica Mexicana, 2019

RESUMEN El declive de la diversidad de especies dulceacuícolas es un fenómeno mundial, pero es es... more RESUMEN El declive de la diversidad de especies dulceacuícolas es un fenómeno mundial, pero es especialmente pro-nunciado en las regiones áridas como en el Desierto Chihuahuense de Coahuila y Durango, norte-centro de México. Existen pocos datos históricos sobre la distribución y ninguna información sobre extinciones de gasterópodos dulceacuícolas mexicanos. En tales casos, los datos paleontológicos pueden ser muy útiles y, a menudo, son la única forma de documentar las distribuciones pasadas y los eventos locales de extin-ción u extirpación. Este nuevo enfoque paleoecológico, llamado Paleobiología de Conservación, puede propor-cionar perspectivas importantes para los esfuerzos de conservación de ecosistemas análogos recientes. El sitio de estudio contiene depósitos fósiles (Holoceno Tardío) del Distrito Laguna, un área pequeña en Coahuila y Durango. De estos depósitos fósiles describimos una nueva especie y reportamos varios registros nuevos de gasterópodos cochliópidos, hidróbidos, planórbidos y neritidos. La mayoría de estas especies y algunos géne-ros no se conocen como fósiles de México y todos ellos desaparecieron en tiempos muy recientes. En conjunto con datos de nuestros estudios paleomalacológicos anteriores, presentamos aquí un ejemplo de una extir-pación local "silenciosa" en el norte de México la cual comenzó en el Holoceno Medio. Esta pérdida de espe-cies aumentó rápidamente en la segunda mitad del siglo XX. De las 32 especies de caracoles dulceacuícolas presentes en el área de estudio durante el Holoceno, solo 4 (12.5%) aún existen. Al menos 24 (75.0%) de ellos desaparecieron del área en el siglo XX debido a la pérdida de hábitat causada por actividades antropogé-nicas. Nuestros resultados muestran que especialmente los hidróbidos con intervalos geográficos pequeños (especies endémicas locales) son altamente sensibles y vulnerables a tales acontecimientos de extirpación. La extirpación de los caracoles dulceacuícolas en el área de estudio ocurrió silenciosamente (sin registros), mien-tras que al mismo tiempo unos doscientos kilómetros más al norte, uno de los mayores focos de diversidad de gasterópodos en América del Norte permaneció en la cuenca de Cuatrociénegas. Las mismas amenazas que llevaron a la extirpación local en nuestra área de estudio aún amenazan a las comunidades de caracoles dulceacuícolas del valle de Cuatrociénegas. Palabras clave: Paleobiología, extirpación, gasterópodos, dulceacuícolas, pérdida de hábitat.

Arido Ciencia, 2018

Anuran amphibians are vertebrate animals, which have a process of metamorphosis and spend part o... more Anuran amphibians are vertebrate animals, which have a process of metamorphosis and spend part of their lives in water and another on land. In land, most of them remain close to wet areas, although some species have adapted to arid environments, characterized by low levels of humidity, saline soils and high temperatures. The anurans have high phenotypic plasticity, with which they manage to develop various mechanisms of ecophysiological adaptation because of the adverse conditions of this type of environment, including phenotypic plasticity, acceleration of development, formation of burrows and cocoons, estivation, osmoregulation (where the hydric balance, formation of urine and excretion of nitrogen are involved), and thermoregulation (obtained by the reflectance, coloration of the skin, decrease of metabolism and the corporal posture). Each type of anuran that lives in arid zones presents one or several ecophysiological mechanisms that favor its adaptation to that ecosystem. Therefore, this contribution aims to explain in a general way the main mechanisms of ecophysiological adaptation of anuran amphibians to arid zones. The information synthesized in this work is fundamental to understand these mechanisms and could be very useful in the conservation of such species and the ecosystems where they live.

JOURNAL OF ADVANCED VETERINARY AND ANIMAL RESEARCH, 2024

Foods, 2023

Áreas Naturales Protegidas Scripta, 2023

40, 2023

Animal Biodiversity and Conservation

Southwestern Entomologist, 2023

Revista de Biociencias, 2023

Saudi Pharmaceutical Journal, 2023

Animal Biodiversity and Conservation, 2023

Biotecnia, 2023

Abanico Veterinario

Biología y Sociedad, 2021

Scientia Fungorum, 2021

Sylwan, 2020

Journal of Citology and Tissue Biology

Revista Mexicana de Biodiversidad, 2020

Boletín de la Sociedad Geológica Mexicana, 2019

Arido Ciencia, 2018

MÉXICO MEGADIVERSO VISTO A TRAVÉS DE SUS JARDINES Y SUS PROTAGONISTAS, 2023

El Centro de Investigación y Jardín Etnobiológico del Semidesierto de Coahuila (CIJE) es un espac... more El Centro de Investigación y Jardín Etnobiológico del Semidesierto
de Coahuila (CIJE) es un espacio que combina la protección
de la biodiversidad de la región semiárida del estado,
la conservación del medio ambiente y la educación de la comunidad.
Utilizando un enfoque biocultural, rescata saberes
ancestrales, integra a la comunidad y fortalece la educación
ambiental. En el CIJE se han implementado y puesto en marcha
estrategias de adaptación al cambio climático, como gestión
de agua eficiente y diversificación económica. Además, a
través de la educación ambiental y la diversificación económica,
busca garantizar un futuro sostenible y prosperidad en una
región marginada. A diferencia de la mayoría de los jardines
etnobiológicos mexicanos, el CIJE está integrado a un centro
de investigación lo que potencializa el estudio de flora y fauna
viva local y regional con el fin de resguardar el conocimiento
relativo a ellas, que se recuperen y visibilicen los conocimientos
etnobiológico locales y/o regionales y aquellos relacionados
con la riqueza biocultural de la región lagunera y del semidesierto
de Coahuila, promoviendo la difusión y el acceso
universal a este conocimiento, así como su intercambio.

Micro y macrodiversidad, 2023

The taxonomic determination of fecal bacteria is an important starting point to improve the strat... more The taxonomic determination of fecal bacteria is an important starting point to improve the strategies
of management and conservation of wildlife. Here we report an approach to the fecal bacteria of the American
bison (Bison bison) in Chihuahua, Mexico (Janos Biosphere Reserve). We used 16S rRNA (V3-V4) next
generation massive sequencing (ngs) in Illumina. The results were analyzed in qiime (Quantitative Insights
into Microbial Ecology; EzBioCloud database was used as taxonomical reference. The OTUs (Operational
Taxonomic Unit) resulted in 14 phyla, 21 classes, 24 orders, 45 families, 171 genera and 204 species. Firmicutes
and Bacteroidetes were the most abundant phyla; they are commonly associated with healthy intestinal communities.
Most of the bacterial genera reported here for B. bison were reported for other bison populations,
and for other bovine species. This is the first study reporting the fecal bacteria of B. bison in Mexico using ngs.

Microbial Biodiversity, Biotechnology and Ecosystem Sustainability, 2023

Drylands are ecosystems whose biodiversity has developed the ability to adapt to extreme conditio... more Drylands are ecosystems whose biodiversity has developed the ability to
adapt to extreme conditions, such as scarcity of water and high temperatures, and has
evolved to survive in an environment where biomass and energy flow are limited.
Microorganisms are a fundamental part of biodiversity in drylands since they have
ecological and functional interactions with plants and animals, maintain the adequate
soil conditions where other organisms live and grow and participate in the biogeochemical cycles of some elements. Also, dryland microorganisms can be used as
bioindicators of environmental health, especially in arid zones that are particularly
sensitive to anthropogenic impact. Furthermore, from the point of view of biotechnology, the biochemical and physiological processes of dryland microorganisms can
be exploited with industrial and research purposes in the production of enzymes,
antioxidants, antimicrobials, biosurfactants, growth promoters, antifungals, polysaccharides, and lipids. Therefore, in this chapter, we provide a general overview
of the microbial ecology in drylands and its biotechnological potential. The use of
microorganisms and/or their metabolites in biotechnological industries represents a
sustainable and efficient process with a huge number of plausible applications.

ADVANCES IN ANIMAL SCIENCE AND ZOOLOGY VOLUME 14 , 2019

A bioindicator is an organism sensitive to environmental changes and, therefore, its absence or s... more A bioindicator is an organism sensitive to environmental changes and, therefore, its absence or scarcity indicates that there is some factor that is modifying the normal conditions of the environment. Amphibians are excellent bioindicators for several reasons: they are sensitive to contaminants such as heavy metals or pesticides, being a good model for endocrinological or ecotoxicological studies, also, in some species a very representative number of individuals can be obtained, since some frogs lay thousands of eggs, besides, it is relatively cheap to keep them in the laboratory, they are easily manipulated (in general they do not represent harm to people), do not require much space and in some species, their embryos and larvae are transparent and large enough to be handled. An additional advantage for amphibians is that they are vertebrates, so that the alterations or pathologies that affect their development by adverse phenomena or contact with toxic substances can be compared with human development.

Reptiles and amphibians, 2018