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Search Results: 1 - 10 of 9760 matches for " SANDRA IDE "
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Longevidad de Orgilus obscurator Ness: (Hymenoptera: Braconidae) en presencia de diferentes fuentes de alimento
IDE,SANDRA; LANFRANCO,DOLLY;
Revista chilena de historia natural , 2001, DOI: 10.4067/S0716-078X2001000200020
Abstract: one of the tactics that improved the control of rhyacionia buoliana in chile was the introduction in 1987 of orgilus obscurator, a specific parasitoid. evaluations between the regions vii and x of chile during 1995 to 1997 have shown significant differences in the establishment and parasitism obtained by o. obscurator. several factors are involved in the success of control strategies, including the availability and access to food sources such as water, flower nectar and honey, and its effect over longevity of adult parasitoids. the objective of this study, conducted during 1996-1997 and 1997-1998 in valdivia province, x region, was to consider these factors. for the experiment, 295 males and females of o. obscurator were maintained with water, honey and flowers of four species (three belonging to apiaceae and one to asteraceae). the highest longevity was obtained using honey (23 days for males, 33 days for females) and flowers of conium maculatum l. and daucus carota l. with an average of 14.1 days. these results suggest that increasing the presence of food sources in plantations of pinus radiata, mainly in the vii and viii regions, will enhance levels of parasitism by o. obscurator
Longevidad de Orgilus obscurator Ness: (Hymenoptera: Braconidae) en presencia de diferentes fuentes de alimento Longevity of Orgilus obscurator Ness: (Hymenoptera: Braconidae) under the influence of different food sources
SANDRA IDE,DOLLY LANFRANCO
Revista chilena de historia natural , 2001,
Abstract: Una de las tácticas implementadas en el control de Rhyacionia buoliana Schiff. en Chile fue la introducción en 1987 de Orgilus obscurator Ness., un parasitoide específico. Evaluaciones realizadas entre la VII y X regiones de Chile, entre 1995 y 1997, mostraron diferencias significativas en el establecimiento y porcentaje de parasitismo alcanzados por O. obscurator. Aún cuando son múltiples los factores que inciden en el éxito de un biocontrolador, es importante considerar la disponibilidad y accesibilidad de fuentes de alimento, tales como el néctar de algunas flores y su efecto en la longevidad de los adultos. Este estudio fue realizado en la temporada 1996-1997 y 1997-1998 en la Provincia de Valdivia, décima región de Chile. Se utilizaron 295 individuos adultos, entre machos y hembras, manteniéndolos con agua, sin agua, agua-miel y con flores de cuatro especies de plantas, tres pertenecientes a la familia Apiaceae y otra a la familia Asteraceae. La mayor longevidad promedio se obtuvo usando agua miel (23 días en machos y 33 días en hembras) y flores de Conium maculatum y Daucus carota (14,1 días), las cuales permitieron aumentar dos veces la longevidad respecto al uso sólo de agua. Los resultados encontrados permiten sugerir la incorporación de algunas especies como C. maculatum y D. carota a las plantaciones de Pinus radiata D. Don, especialmente en la séptima y octava regiones del país, como una forma de aumentar la eficiencia de parasitación de O. obscurator One of the tactics that improved the control of Rhyacionia buoliana in Chile was the introduction in 1987 of Orgilus obscurator, a specific parasitoid. Evaluations between the regions VII and X of Chile during 1995 to 1997 have shown significant differences in the establishment and parasitism obtained by O. obscurator. Several factors are involved in the success of control strategies, including the availability and access to food sources such as water, flower nectar and honey, and its effect over longevity of adult parasitoids. The objective of this study, conducted during 1996-1997 and 1997-1998 in Valdivia Province, X region, was to consider these factors. For the experiment, 295 males and females of O. obscurator were maintained with water, honey and flowers of four species (three belonging to Apiaceae and one to Asteraceae). The highest longevity was obtained using honey (23 days for males, 33 days for females) and flowers of Conium maculatum L. and Daucus carota L. with an average of 14.1 days. These results suggest that increasing the presence of food sources in plantations of Pinus radia
Ensayos de eficacia cuarentenaria de tres formulaciones de antimanchas comercializadas en Chile para un proceso simulado de exportación de madera aserrada de Pinus radiata
VIVES,ISABEL; IDE,SANDRA; PEREDO,HERNAN;
Bosque (Valdivia) , 2004, DOI: 10.4067/S0717-92002004000300009
Abstract: three anti-sapstain products were tested on sawn pinus radiata timber in the eighth as well as in the tenth regions of chile. the fungicide products were combo antiblu (a mixture of antiblu 375 and antiblu cc), wolsin fl 12215 and sinesto b. results showed that the products were more effective in the tenth region than in the eighth region. of the three products tested, combo antiblu had the best characteristics in both regions.
Detección de superparasitismo y multiparasitismo sobre larvas de Rhyacionia buoliana (Lepidoptera-Tortricidae) en las Regiones VIII y IX de Chile
Ide,Sandra; Lanfranco,Dolly; Ruiz,Cecilia;
Bosque (Valdivia) , 2007, DOI: 10.4067/S0717-92002007000100009
Abstract: during 2000 and 2001 a sampling period in five forest localities of the bio-bio (viii region) and malleco provinces (ix region) of chile was carried out. population density of the pine shoot moth rhyacionia buoliana was determined with a fluctuation between 19 and 207 mean number of larvae per tree in the first year of evaluation and 6.4 to 137 during 2001. the parasitism over larvae by orgilus obscurator varied between 50% and 80% during the year 2000 and 57% and 96% in the second year. superparasitism by o. obscurator and multiparasitism by venturia sp. (hym.: ichneumonidae) were detected during both years of parasitism evaluation. although the data do not reveal that the parasitism of o. obscurator is interfered by other agents; this approach can be changed by new detected native and introduced biocontrollers as it is discussed. to evaluate periodically the program using the same methodology is a good practice for monitoring the control of the pine shoot moth implemented in chile since 1987.
Detección de superparasitismo y multiparasitismo sobre larvas de Rhyacionia buoliana (Lepidoptera-Tortricidae) en las Regiones VIII y IX de Chile Superparasitism and multiparasitism detection on Rhyacionia buoliana (Lepidoptera-Tortricidae) larvae in the VIII and IX Regions in Chile
Sandra Ide,Dolly Lanfranco,Cecilia Ruiz
Bosque (Valdivia) , 2007,
Abstract: Cinco predios en las provincias de Bío-Bío (VIII Región) y Malleco (IX Región) fueron muestreados, en los a os 2000 y 2001, para establecer los niveles de parasitismo por Orgilus obscurator en Rhyacionia buoliana. Se determinó que la densidad poblacional de R. buoliana fluctuó entre 19 y 207 larvas promedio por árbol en el primer a o de evaluación, y entre 6,4 y 137 en el a o 2001. El parasitismo por O. obscurator fluctuó entre 50 y 88% (a o 2000) y entre 57 y 96% en el segundo a o, lo que indica un avance de los niveles del control biológico. En los dos a os de evaluación se detectó superparasitismo por O. obscurator y multiparasitismo por Venturia sp. (Hym.: Ichneumonidae). Ello con la disección de las larvas recolectadas en ambas regiones. Aún cuando las cifras que derivan de este estudio sobre la interferencia en el parasitismo con O. obscurator no son preocupantes, nuevos biocontroladores tanto nativos como introducidos, ya detectados, pueden cambiar este escenario, lo que se discute. De allí la importancia de evaluar periódicamente y con la misma metodología el programa de control de la polilla del brote del pino implementado en Chile ya en el a o 1987. During 2000 and 2001 a sampling period in five forest localities of the Bio-Bio (VIII Region) and Malleco provinces (IX Region) of Chile was carried out. Population density of the pine shoot moth Rhyacionia buoliana was determined with a fluctuation between 19 and 207 mean number of larvae per tree in the first year of evaluation and 6.4 to 137 during 2001. The parasitism over larvae by Orgilus obscurator varied between 50% and 80% during the year 2000 and 57% and 96% in the second year. Superparasitism by O. obscurator and multiparasitism by Venturia sp. (Hym.: Ichneumonidae) were detected during both years of parasitism evaluation. Although the data do not reveal that the parasitism of O. obscurator is interfered by other agents; this approach can be changed by new detected native and introduced biocontrollers as it is discussed. To evaluate periodically the program using the same methodology is a good practice for monitoring the control of the pine shoot moth implemented in Chile since 1987.
Ensayos de eficacia cuarentenaria de tres formulaciones de antimanchas comercializadas en Chile para un proceso simulado de exportación de madera aserrada de Pinus radiata Quarantine efficacy of three anti-bluestain formulas sold in Chile, in a simulated export process involving sawn Pinus radiata timber
ISABEL VIVES,SANDRA IDE,HERNAN PEREDO
Bosque (Valdivia) , 2004,
Abstract: Se ensayaron tres productos antimancha en madera aserrada de Pinus radiata tanto en la Octava como en la Décima Región de Chile. Los productos fungicidas fueron Combo Antiblu (mezcla de Antiblu 375 y Antiblu CC), Wolsin FL 12215 y Sinesto B. De los resultados obtenidos se pudo comprobar que los productos utilizados fueron más efectivos en la Décima que en la Octava Región. De los tres productos ensayados Combo Antiblu tuvo el mejor resultado en ambas regiones al proteger la madera. Three anti-sapstain products were tested on sawn Pinus radiata timber in the Eighth as well as in the Tenth Regions of Chile. The fungicide products were Combo Antiblu (a mixture of Antiblu 375 and Antiblu CC), Wolsin FL 12215 and Sinesto B. Results showed that the products were more effective in the Tenth Region than in the Eighth Region. Of the three products tested, Combo Antiblu had the best characteristics in both Regions.
Caracterización fitosanitaria de astillas de Eucalyptus spp. y de especies nativas
LANFRANCO,DOLLY; IDE,SANDRA; RUIZ,CECILIA; VIVES,ISABEL; PEREDO,HERNAN;
Bosque (Valdivia) , 2003, DOI: 10.4067/S0717-92002003000100004
Abstract: this study lists and discusses the occurrence of insects and fungi in eucalyptus (eucalyptus globulus and e. nitens) chips, as well as on chips from native forest species, for export from chilean ports. eight shipments were inspected and analyzed. the main problem was the establishment of ceratocystis spp. fungi during chip storage. although no insect species were found, empty galleries were present in the native hardwoods, albeit at very low frequencies (0.05-0.43%). there were no detectable problems with eucalyptus chips.
Evaluación física y económica de pérdidas en volumen debido al da?o de Rhyacionia buoliana (Schiff.) en plantaciones de Pinus radiata (D. Don) en la Novena y Décima Regiones de Chile
ALZAMORA M,ROSA; APIOLAZA,LUIS A; IDE,SANDRA;
Bosque (Valdivia) , 2002, DOI: 10.4067/S0717-92002002000200004
Abstract: the study presents a physical and economic evaluation of commercial volume losses due to the attack of rhyacionia buoliana (schiff) on pinus radiata (d. don) plantations in the ix and x regions of chile in 1995. the economic impact of the insect on the optimal rotation of stands is evaluated using the land expectation value criterion. different conditions of damage are related to stem defects caused by the insect. three plantation ages and two site indices are considered with information about diameter, total height and defect height. volume yields were projected with moth damage (defined as one or more defects below the commercial height of the stem) and without moth damage (no defects due to the moth). this methodology allows us to represent the impacts of the defects as a commercial volume differential. yield projections were made using silvicultural regimes commonly used in private industrial plantations. the results are presented in three stages. first, a statistical analysis to determine the influence of the site index, the age of the plantation and the region on total height, frequency and type of defects. second, calculation of volume differentials between a healthy plantation and one with r. buoliana damage. finally, the economic impact of the moth is determined by comparing the land expectation values.
Evaluación física y económica de pérdidas en volumen debido al da o de Rhyacionia buoliana (Schiff.) en plantaciones de Pinus radiata (D. Don) en la Novena y Décima Regiones de Chile Physical and economic evaluation of volume losses due to Rhyacionia buoliana (Schiff.) damage in Pinus radiata (D. Don) plantations in Southern Chile
ROSA ALZAMORA M,LUIS A APIOLAZA,SANDRA IDE
Bosque (Valdivia) , 2002,
Abstract: Se presenta un estudio con la evaluación física y económica de las pérdidas, debido al ataque de Rhyacionia buoliana (Schiff) sobre Pinus radiata (D. Don) en la IX y X Regiones de Chile en el a o 1995. El impacto económico del insecto se evalúa al momento de la rotación económica, mediante el criterio del Valor Potencial del Suelo. Diferentes condiciones de da o son relacionadas con los defectos fustales ocasionados por la polilla. Para ello, en el bosque se registró información de diámetros, alturas y tipos de defectos, en tres edades y dos calidades de sitio. Después se proyectó el rendimiento volumétrico en la condición con y sin da o de polilla (uno o más defectos en la altura comercial). Esta metodología permitió representar el impacto físico del da o como diferencial de volumen comercial. Las proyecciones de los rendimientos volumétricos consideraron los esquemas de manejo que las empresas corrientemente contemplan para estos rodales. Los resultados son presentados en tres categorías de análisis. Primero, un análisis estadístico para determinar la influencia del índice de sitio, la edad de la plantación y la Región en las variables, altura total, frecuencia de defectos y tipo de defectos. Segundo, la cuantificación de los diferenciales en volumen por tipo de producto entre una plantación sana y una con da o debido a R. buoliana y, finalmente, la determinación del impacto económico de la polilla, comparando el Valor Potencial del Suelo entre escenarios con y sin da o. The study presents a physical and economic evaluation of commercial volume losses due to the attack of Rhyacionia buoliana (Schiff) on Pinus radiata (D. Don) plantations in the IX and X regions of Chile in 1995. The economic impact of the insect on the optimal rotation of stands is evaluated using the Land Expectation Value criterion. Different conditions of damage are related to stem defects caused by the insect. Three plantation ages and two site indices are considered with information about diameter, total height and defect height. Volume yields were projected with moth damage (defined as one or more defects below the commercial height of the stem) and without moth damage (no defects due to the moth). This methodology allows us to represent the impacts of the defects as a commercial volume differential. Yield projections were made using silvicultural regimes commonly used in private industrial plantations. The results are presented in three stages. First, a statistical analysis to determine the influence of the site index, the age of the plantation and the region on total height, f
Caracterización fitosanitaria de astillas de Eucalyptus spp. y de especies nativas Phytosanitary characterization of Eucalyptus spp. and native species chips
DOLLY LANFRANCO,SANDRA IDE,CECILIA RUIZ,ISABEL VIVES
Bosque (Valdivia) , 2003,
Abstract: Se entregan los primeros antecedentes sobre el estado sanitario de astillas de Eucalyptus globulus, E. nitens y de especies nativas. Se estudiaron ocho embarques de astillas, en los cuales el principal problema debido principalmente al tiempo de acanchado del producto fue la presencia de hongos manchadores pertenecientes al género Ceratocystis. No existen problemas ocasionados por insectos, sólo se detectó la presencia de galerías, en un porcentaje muy bajo de astillas de especies nativas (0,05-0,43%), no detectándose problemas en astillas de Eucalyptus spp. This study lists and discusses the occurrence of insects and fungi in eucalyptus (Eucalyptus globulus and E. nitens) chips, as well as on chips from native forest species, for export from Chilean ports. Eight shipments were inspected and analyzed. The main problem was the establishment of Ceratocystis spp. fungi during chip storage. Although no insect species were found, empty galleries were present in the native hardwoods, albeit at very low frequencies (0.05-0.43%). There were no detectable problems with Eucalyptus chips.
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