RESUMO

In the present study, the nematicidal and acaricidal activity of three biosurfactants (BS) produced by strains of the Bacillus genus was evaluated. The BS produced by the Bacillus ROSS2 strain presented a mortality of 39.29% in juveniles (J2) of Nacobbus aberrans at a concentration of 30 mg/mL, this same strain is the one that presented the highest mortality in Tyrophagus putrescentiae, which was 57.97% at a concentration of 39 mg/mL. The BS were qualitatively identified by thin layer chromatography and are lipid in nature based on the retention factor (Rf). While the GC-MS analysis identified two main compounds that are 4,7-Methano-1H-indene-2,6-dicarboxylic acid, 3a,4,7,7a-tetrahydro-1, and Methyl 4-(pyrrol-1-yl)-1,2,5-oxadiazole-3-carboxylate1, which is the polar part indicated by the presence of dicarboxylic acid and carboxylate groups; while the non-polar portion can be interpreted as a hydrocarbon chain of variable length. Based on the present results, BS can be an alternative for the biocontrol of the root-knot nematode N. aberrans and the mite T. putrescentiae.

Assuntos

RESUMO

PURPOSE: In the present study, the nematicidal activity of the chemical fractionation of the spent substrate of the edible mushroom Pleurotus ostreatus against eggs and L3 larvae of Haemonchus contortus was evaluated. METHODS: The hydroalcoholic extract of the spent substrate was subjected to a bipartition with ethyl acetate giving two fractions: one aqueous (F. Ac) and one organic (F. AcOET). Both fractions were evaluated against eggs and L3 larvae at different concentrations (5, 2.5, 1.25, 0.625 and 0.3125 mg/mL) and 2% methanol, PBS and thiabendazole (5 mg/mL) as controls. Chemical fractionation of F. AcOET was performed in open column chromatography where 76 fractions were obtained and when analyzed by thin layer chromatography (TLC) were grouped into 11 mixtures (R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11). These mixtures were evaluated at 10 mg/mL against eggs and L3 larvae. The data obtained were analyzed by ANOVA and a Tukey test in the SAS V9 program. RESULTS: The results showed that, in the evaluation of F. AcOET and F. Ac, for the inhibition of egg hatching, the highest percentages were 78.80 and 76.89% at 5 mg/mL, respectively. As for the percentage of larval mortality, F. AcOET obtained 60.91 and F. Ac 29.77% at 5 mg/mL. The results of the evaluations of the mixtures showed that mixtures R4, R5 obtained 100 and 95.41% larval mortality and mixtures R6 and R7 presented 100% inhibitory activity of egg hatching, so these were analyzed by gas chromatography mass spectrometry finding compounds such as vanillin, ß-sitosterol, ρ-methyl ρ-hydroxycinnamate and ρ-hydroxybenzaldehyde. CONCLUSION: The results of the present study demonstrate that the spent substrate of P. ostreatus has potential anthelmintic activity against H. contortus. Moreover, by reusing and taking advantage of this substrate, its environmental pollution effects can be reduced.

Assuntos

RESUMO

Resumen El objetivo de este trabajo fue sistematizar las especies apropiadas, formas de apropiación y valores de uso asignados a la fauna silvestre en comunidades de la Reserva de la Biosfera Sierra de Huautla, México, mediante un análisis documental y trabajo de campo. Se registraron 46 especies con valor de uso pertenecientes a 31 familias. La clase con mayor número de especies apropiadas son las aves (42.5%), seguidas de los mamíferos (34%). El 64% de las especies se apropian con fines alimentarios y el 38.3% se utilizan para el tratamiento de enfermedades en la medicina tradicional. Otros usos son adornos, amuletos, elaboración de herramientas y como animal de compañía. La apropiación de fauna silvestre se realiza por medio de la cacería, la recolección y la pesca. Las armas de fuego como la escopeta es el principal instrumento para la cacería. También se utilizan perros, machetes, resorteras, tarrayas, anzuelos, nudos corredizos y se capturan manualmente. La apropiación puede ser una actividad oportunista u organizada por medio de las arreadas, espiadas, lampareadas, campeadas, acorralamiento y recolección manual. La apropiación de fauna silvestre es una actividad culturalmente arraigada en las comunidades de la reserva. Sin embargo, el análisis de la relación sociedad-fauna en la región es limitado, por lo que es necesario generar información que promueva el manejo sostenible del recurso faunístico.

Abstract The aims of this paper were the systematization of appropriated species, appropriation forms and assigned use values of wildlife species in the Biosphere Reserve of the Sierra de Huautla, Mexico, by means of documentary analysis and field work. We recorded 46 species with use value pertaining to 31 families. Birds accounted for the highest number of appropriated species (42.5%), followed by mammals (34%). Of the total species, 64% are appropriated for alimentary purposes and are used in the treatment of diseases in traditional medicine. Others are used as ornaments, talismans, in tool manufacture and as pet animals. Wildlife appropriation is achieved by hunting, collection and fishing. Fire arms such as shotguns are the main instrument used in hunting. Dogs, machetes, slingshots, nets, hooks, slipknots, are also used, or they are captured by hand. Appropriation can be an opportunistic or organized activity by means of "arreadas" (herding), "espiadas" (opportunistic observation), "lampareadas" (spotlighting), "campeadas" (scouring), "acorralamiento" (cornering) and manual collection. Wildlife appropriation is a culturally rooted activity in the reserve communities. Nevertheless, the analysis of the relationship society-fauna in the region is limited and this is why the generation of information that may enable a sustainable management of the faunistic resource is necessary.

RESUMO

Resumen El objetivo de la investigación fue analizar el conocimiento etnozoológico que conservan de los vertebrados silvestres los habitantes de la comunidad Bonifacio García en Morelos, México. Se aplicaron entrevistas semiestructuradas a 30 informantes clave, mediante la observación participante y recorridos guiados se buscaron rastros como huellas, excretas, madrigueras, pieles y observación in vivo para la identificación de las especies citadas y se calcularon los siguientes índices: valor de diversidad de uso para cada especie (VDE) y de uso medicinal (VDM), así como el índice de diversidad de las enfermedades tratadas (IVDE). Se reportan 41 especies de vertebrados que los entrevistados reconocen, de los cuales 28 son aprovechados: mamíferos 39.3%, aves 32%, reptiles 18%, peces 7.1% y anfibios 3.6%. Los principales valores de uso fueron alimentario (0.54), medicinal (0.46) y ornamental (0.43). El venado cola blanca, la iguana negra y la víbora de cascabel registraron 0.57 de VDE y un VDM de 0.19. Las principales enfermedades tratadas son: cáncer, afecciones respiratorias, enfermedades de la piel y reumatismo con un IVDE de 0.17. La apropiación de los vertebrados silvestres se lleva a cabo por medio de la cacería de subsistencia en el campo (50%), terrenos de cultivo (43%) y el traspatio (7%) utilizando con mayor frecuencia escopeta como arma de captura. Se concluye que la apropiación de vertebrados permite complementar necesidades básicas de alimentación y salud; por lo que los conocimientos etnozoológicos deben de integrarse a políticas públicas que permitan la conservación y manejo de la fauna silvestre en la comunidad.

Abstract The aim of this study was to analyze the ethnozoological knowledge that the inhabitants of the Bonifacio García community, Morelos, Mexico, conserve about wild vertebrate. Semi-structured interviews were applied to 30 key informants, through participant observation and guided tours, traces such as footprints, excreta, burrows and pelts and in vivo observation were researched for the identification of the mentioned species and the following indexes were calculated: value of diversity of use for each species (VDS) and of medicinal uses (DVM), as well as the diversity index of the treated diseases (DITD). The study recorded a total of 42 wild vertebrate species, of these 28 are used: mammals 39.3%, birds 32%, reptiles 18%, fish 7.1% and amphibia 3.6%. The main use values were alimentary (0.54), medicinal (0.46) and ornamental (0.43). The white-tailed deer, the black iguana and the rattlesnake registered 0.57 of VDS and a DVM of 0.19. The main diseases treated are cancer, respiratory and skin diseases and rheumatism with an DITD of 0.17. The animals are obtained by means of subsistence hunting in the fields (50%), croplands (43%) and backyards (7%), using most frequently shotguns as arms for capture. We conclude that the appropriation of vertebrates complements basic needs for food and health; therefore, ethnozoological knowledge must be integrated into public policies that enable the conservation and management of wild fauna in the community.

RESUMO

La pérdida de los procesos productivos tradicionales vigentes en los huertos familiares tradicionales debido a los emplazamientos mineros pone en riesgo la producción de las plantas con valor de uso medicinal y alimentario, cuya cosecha permite mitigar la pobreza entre las familias de las comunidades campesinas e indígenas. El objetivo del presente trabajo fue determinar las plantas con valores de uso que mitigan la desigualdad social de los habitantes de Coatetelco, Morelos, México. Mediante técnicas etnobiológicas, se registró una riqueza de 99 especies de plantas correspondientes a 88 géneros y 48 familias botánicas. Se registraron ocho valores de uso, de los cuales destaca el medicinal con 49.5% y el alimentario con 47.5%. Además de los usos antes mencionados, destacan funciones ecosistémicas que aseguran agua, aire limpio y alimentos orgánicos del territorio a las zonas urbanas del sur del estado. Los conocimientos tradicionales expresados en los valores de uso de las plantas aportan elementos susceptibles de integrarse a políticas públicas que garanticen la conservación de la diversidad biológica y cultural para la reproducción social de las comunidades nahuas del Poniente de Morelos, México.

Assuntos