Términos relacionados

27 resultados encontrados para: AUTOR: Santiesteban Hernández, Antonio
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1.
- Artículo con arbitraje
Host kairomones elicit area-restricted search by prorops nasuta, a parasitoid of the coffee berry borer
Chiu Alvarado, María del Pilar ; Santiesteban Hernández, Antonio (coaut.) ; Rojas, Julio C. (coaut.) ;
Contenido en: Open Entomology Journal Vol. 6 (2012), p. 17-21 ISSN: 1874-4079
PDF
Resumen en: Inglés |
Resumen en inglés

The bethylid wasp Prorops nasuta Waterston is a natural enemy of the coffee berry borer, Hypothenemus ham- pei Ferrari, the most devastating insect pest of coffee worldwide. Volatiles from H. hampei immature stages and dust/frass are used by P. nasuta as long-range cues during the host location process. In addition, host dust/frass extracts influenced the area-restricted search by P. nasuta females. In this study, we evaluated the effect of organic solvent extracts from H. hampei immature stages and adults on several parameters regarding locomotory behavior of P. nasuta females. P. nasuta females spent more time, covered greater distance, reduced their speed, and turned more per unit time in patches treated with hexanic, acetonic, and methanolic extracts from H. hampei immature stages and adults with respect to the solvent controls. The concentration of the methanolic extract from H. hampei immature stages clearly influenced the locomotory activity of P. nasuta.


2.
Libro - Memoria en extenso sin arbitraje
Resúmenes: x congreso internacional de manejo integrado de plagas y agroecología / Alfredo Castillo, Jaime Gómez, Helda Morales, Jorge Toledo y Ramón Jarquín, editores
Congreso Internacional de Manejo Integrado de Plagas y Agroecología (X : 2006 : Tapachula, Chiapas, México) ; Castillo Vera, Alfredo (editor) ; Gómez Ruiz, Jaime (editor) ; Morales, H. (editora) ; Toledo, Jorge (editor) ; Jarquín Gálvez, Ramón (editor) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2006
Disponible en línea
Clasificación: EE/632.909728 / C6
Bibliotecas: San Cristóbal , Tapachula
Cerrar
SIBE San Cristóbal
ECO010017204 (Disponible) , 41468-30 (Disponible) , ECO010003612 (Disponible)
Disponibles para prestamo: 3
Cerrar
SIBE Tapachula
41468-40 (Disponible) , ECO020011320 (Disponible)
Disponibles para prestamo: 2
PDF

3.
Libro
Entomología mexicana / editores: Jesús Romero Nápoles, Edith G. Estrada Venegas, Armando Equihua Martínez
Congreso Nacional de Entomología (38 : 2003 : Ixtapa, Zihuatanejo, Guerrero, México) ;
Distrito Federal, México : Sociedad Mexicana de Entomología , 2003
Clasificación: 595.7 / C6/2003
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020006283 (Disponible)
Disponibles para prestamo: 1

4.
- Artículo con arbitraje
PDF
Resumen en: Español | Inglés |
Resumen en español

En este estudio se investigó la presencia de tres anti-inflamatorios no esteroideos (AINEs: naproxeno [NPX], ketoprofeno [KFN] y el ibupofreno [IBF], en cuerpos de agua superficial receptores de aguas residuales no tratadas de la ciudad de Tapachula (sur de México). Las muestras fueron tomadas durante tres campañas de muestreo en dos ríos (Coatán y Texcuyupan), una corriente urbana (Coatancito) y en una laguna costera (Barra San Simón). Las muestras se analizaron por cromatografía de gases-espectrometría de masas. Los resultados mostraron altas concentraciones de NPX (17.83 a 142.50 μg L-1), KFN (5.30 a 67.87 μg L-1) y IBF (3.97 a 31.30 μg L-1), presente en la mayoría de las muestras. El análisis de correlación entre los compuestos de interés y los parámetros fisicoquímicos muestran que las descargas de aguas residuales son las principales fuentes de estos contaminantes. Por otra parte, los índices de riesgo estimados sugieren una posible amenaza para los organismos acuáticos (algas, microcrustáceos y peces) debido a las altas concentraciones del NPX e IBF en aguas superficiales.

Resumen en inglés

This study investigated the presence of three non-steroidal anti-inflammatory drugs (NSAIDs: naproxen [NPX], ketoprofen [KFN] and ibuprofen [IBF]), in surface water bodies receiving mostly untreated sewage from the city of Tapachula (South Mexico). Samples were taken during three sampling campaigns from two rivers (Coatán and Texcuyuapan), one urban stream (Coatancito), and one coastal lagoon (Barra San Simón), and the samples were analyzed by gas chromatography-mass spectrometry. Results showed high concentrations of NPX (17.83-142.50 μg L-1), KFN (5.30-67.87 μg L-1) and IBF (3.97-31.30 μg L-1), present in most samples. Correlation analysis between target compounds and physicochemical parameters supported the view that sewage discharge is the main source of these pollutants. Furthermore, estimated hazard indexes suggested a potential threat to aquatic organisms (algae, daphnids and fish) due to high concentrations of NPX and IBF in surface water.


5.
- Artículo con arbitraje
Response of Epitragus sallaei (Champion) (Coleoptera : Tenebrionidae) to the odor of Mangifera indica flowers
Cruz López, Leopoldo Caridad (coaut.) ; Jímenez Zuñiga, José Alfredo (coaut.) ; Santiesteban Hernández, Antonio (coaut.) ; Virgen Sánchez, Armando (coaut.) ;
Clasificación: AR/634.44 / R4
Contenido en: Southwestern Entomologist Vol. 26, no. 2 (June 2001), p. 165-170 ISSN: 0147-1724
Bibliotecas: Campeche , San Cristóbal , Tapachula
Cerrar
SIBE Campeche
ECO040006407 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
ECO010000718 (Disponible) , ECO010000717 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Tapachula
ECO020008663 (Disponible) , ECO020005996 (Disponible)
Disponibles para prestamo: 2
Resumen en: Inglés |
Resumen en inglés

Field observations showed that mango flowers, Mangifera indica var. Ataulfo, attract a variety of insect species. These flowers are white in color and emit a strong odor. Floral extracts and field-trapped volatiles of mango flowers were tested for their ability to attract Epitragus sallaei (Champion), a beetle which feeds on the flowers. Analysis of volatile chemicals emmited from mango flowers yielded a mixture of fourteen terpenoid compounds. The most abundant compound was 3-carene, followed by alpha -pinene and limonene. In two-choice olfactometer tests, bath male and female E. sallaei were attracted to floral extract, to a synthetic formulation of six mango flower odor components, and to 3-carene alone. Insect response to alpha -pinene, myrcene, limonene, beta -ocimene and terpinolene was poor. Based on theseresults, 3-carene appears to be the most important attractant for E. sallaei and may be useful in the manufacture of artificial lures in the field.


6.
Artículo
Analysis of the fragrance produced by the Epiphytic orchid Anathallis (Pleurothallis) racemiflora (Orchidaceae) in the Soconusco region, Chiapas, Mexico
Damon, Anne Asbhy ; Santiesteban Hernández, Antonio (coaut.) ; Rojas, Julio C. (coaut.) ;
Clasificación: AR/584.15097275 / D36
Contenido en: Lindleyana Vol. 17, no. 2 (June 2002), p. 93-97 ISSN: 0889-258X
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020006176 (Disponible)
Disponibles para prestamo: 1

7.
Artículo
Effect of Euphorbia hirta nectar and its component sugars, upon the survival of bethylid parasitoids of the coffee berry borer
Damon, Anne Asbhy ; Segura Pacheco, Héctor Ramón (coaut.) ; Valle Mora, Javier Francisco (coaut.) ; Santiesteban Hernández, Antonio (coaut.) ;
Clasificación: AR/633.7397 / E3
Contenido en: Southwestern Entomologist Vol. 24, no. 1 (Mar. 1999), p. 49-59
Bibliotecas: San Cristóbal , Tapachula
Cerrar
SIBE San Cristóbal
ECO010019113 (Disponible) , SER001283 (Disponible)
Disponibles para prestamo: 2
Cerrar
SIBE Tapachula
ECO020010408 (Disponible)
Disponibles para prestamo: 1
Resumen en: Inglés |
Resumen en inglés

In the south of Mexico, attempts to control severe infestations of the coffee berry borer Hypothenemus hampei Ferrari (Coleoptera: Scolytidae), by means of two imported African parasitoids, Cephalonomia stephanoderis Betrem and Prorops nasuta Waterston (Hymenoptera: Bethylidae), have been less than satisfactory. The lack of a suitable alternative food source in the field, such as floral nectar, could be one reason for this result. Both parasitoids have been shown to feed upon the nectar of Euphorbia hirta L. (Euphorbiaceae) under laboratory conditions. In these experiments, females of C. stephanoderis and P. nasuta survived up to 55 and 17 days, respectively, when provided daily with a fresh E. hirta flower. Survival time with diluted honey was 41 and 8 days maximum and in the case of the control (no food or water), 7 and 4 days, respectively. Qualitative analysis of the nectar showed the presence of saccharose, fructose and glucose. Parasitoids, isolated in test tubes, were daily given drops of 1M, 2.5M and 5M solutions of the three sugars (5M, saccharose and glucose only) until death. Saccharose, at a concentration of 2.5M, gave the best survival rates for both parasitoids, up to 59 and 28 days for C. stephanoderis and P. nasuta, respectively.


8.
- Artículo con arbitraje
*En hemeroteca, SIBE-Tapachula
A new blend of white sapote fruit volatiles as potential attractant to Anastrepha ludens (Diptera : tephritidae)
González, Ricardo ; Toledo, Jorge (coaut.) ; Cruz López, Leopoldo Caridad (coaut.) ; Virgen Sánchez, Armando (coaut.) ; Santiesteban Hernández, Antonio (coaut.) ; Malo Rivera, Edi Álvaro (coaut.) ;
Contenido en: Journal of Economic Entomology Vol. 99, no. 6 (December 2006), p. 1994-2001 ISSN: 0022-0493
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
41786-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Tapachula
Resumen en: Inglés |
Resumen en inglés

The behavioral and electrophysiological responses of nonirradiated male and female Anastrepha ludens (Loew) (Diptera: Tephritidae), to white sapote, Casimiroa edulis Oerst. (Rutaceae), volatiles were investigated. Females ßew upwind and landed more often on fruit than on artiÞcial fruit in wind tunnel bioassays. Males ßew upwind (but not landed) more frequently on fruit than on artiÞcial fruit. Porapak Q volatile extracts of white sapote also elicited upwind ßight and landing on artiÞcial fruit for both sexes. Gas chromatography-electroantennographic detection analysis of white sapote extracts revealed that antennae of both sexes responded to eight compounds. Two peaks were unidentiÞed because they did not separate from the solvent. Subsequent peaks were identiÞed by gas chromatography-mass spectrometry as styrene, myrcene, 1,2,4-trimethylbenzene, 1,8-cineole, and linalool in a proportion of 50: 21: 0.5: 27: 1.5, respectively. Eight peaks were tentatively identiÞed as -trans-ocimene. The number of A. ludens captured in multilure traps baited with the synthetic white sapote blend was higher than the ßies captured by the multilure unbaited traps (control) in Þeld cages. However, the number of ßies captured by traps baited with the white sapote blend was not different from that of ßies captured by traps baited with hydrolyzed protein. Using standard chemical ecology techniques, we found potential attractants from wild sapote fruit for monitoring and management of A. ludens population.


9.
Artículo
*En hemeroteca, SIBE-Tapachula
Removal of chlorothalonil, methyl parathion and methamidophos from water by the fenton reaction
Gutiérrez, R. F. ; Santiesteban Hernández, Antonio (coaut.) ; Cruz López, Leopoldo Caridad (coaut.) ; Bello Mendoza, Ricardo (coaut.) ;
Contenido en: Environmental Technology Vol. 28, no. 3 (Mar 2007), p. 267-272 ISSN: 1479-487X
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
43195-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Tapachula
Resumen en español

The efficiency of a dark Fenton system (H2O2/Fe2+) to remove chlorothalonil from water, alone and in the presence of the organophosphorous pesticides methyl parathion and methamidophos, was evaluated. Here we show that the process is rapid and efficient. Nearly complete degradation of chlorothalonil and methyl parathion (98%) was observed in less than 10 min whereas methamidophos showed similar levels of efficiency only after 40 to 90 min. Formulating agents did not appear to impair the degradation of active ingredients. Interactions during the degradation of mixtures of the three pesticides only appeared to affect methamidophos degradation.


10.
Artículo
Comparative ecological risks of pesticides used in plantation production of papaya: application of the SYNOPS indicator
Hernández Hernández, Carlos Noé Alejandro ; Valle Mora, Javier Francisco (coaut.) ; Santiesteban Hernández, Antonio (coaut.) ; Bello Mendoza, Ricardo (coaut.) ;
Contenido en: Science of The Total Environment Vol. 381, no. 1-3 (August 2007), p. 112-125 ISSN: 0048-9697
Resumen en: Inglés |
Resumen en inglés

Pesticides are used intensively for crop protection in tropical fruit plantations. Assessments of the relative risks posed by pesticides are needed to assist in the development of management plans that minimize ecological impacts. In this study, the risk indicator SYNOPS_2 was used to compare risks to aquatic ecosystems by pesticides commonly used in papaya plantations. Plant interception and spray drift were measured during six applications of three pesticides (chlorothalonil, chloropyrifos, and malathion) using a turbo fan driven sprayer. Plant interception was estimated to be higher (42.6 ± 12.7%; p = 0.04) in late (8–14 months old) than in early (4 months old) trees (20.1 ± 25.3%). Chlorothalonil concentrations of up to 11.0 μg L− 1 were found in water from an adjacent ditch after field application. Concentrations of this pesticide (7.4 ± 4.1 μg L− 1) in runoff water were also significantly (p < 0.01) higher than those of malathion (2.4 ± 1.9 μg L− 1) and chlorpyrifos (0.8 ± 0.5 μg L− 1). Good correlation between measured and predicted values (r2 = 0.56–0.85, p < 0.01) showed that SYNOPS_2 is able to describe trends in runoff pollution in papaya plantations.

Linear equations were obtained in order to correct numerical disagreement between measured and calculated runoff concentrations. An independent test showed a reasonable agreement between measured chlorothalonil concentrations and the predicted values using the proposed equations. Fifteen pesticides used in papaya cultivation were ranked according to their calculated chronic biological risk index. Pesticides with the highest risk index for non-target organisms were: chlorothalonil for algae, lambda cyahalotrin for Daphnia and fish, and malathion for earthworms. Chlorothalonil was the pesticide with the highest exposure level in water and therefore represents a high risk for aquatic life. Results show that SYNOPS_2 can be used as a pesticide risk indicator on papaya and possibly other tropical fruit plantations.