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26 resultados encontrados para: TEMA: Minador de la hoja
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1.
- Tesis
Impacto de hormigas sobre Leucoptera coffeella (Lepidoptera: Lyonetiidae) en un cafetal en Chiapas / María Dina Estrada Marroquín
Estrada Marroquín, María Dina ; Rodríguez Leyva, Esteban (consejero) ; Lomelí Flores, J. Refugio (asesor) ; Gómez Ruiz, Jaime (asesor) ;
Texcoco, Estado de México, México : Colegio de Postgraduados. Institución de Enseñanza e Investigación en Ciencias Agrícolas , 2017
Resumen en español

El minador de la hoja de café es una plaga importante en los principales países productores de café; pero en México no lo es, lo que se atribuye a la presencia de enemigos naturales particularmente hormigas. En este estudio se evaluó el impacto de éstas en las poblaciones del minador. El estudio se realizó en Cacahoatán, Chiapas, durante dos temporadas del año (sin lluvias y con lluvias). Se determinó la composición de especies de hormigas en café y suelo, y por medio de centinelas y experimentos de exclusión se determinó el impacto de éstas sobre el minador. Se registraron 50 especies de hormigas, con mayor riqueza y abundancia en la época seca; 37 de ellas con hábitos depredadores donde Solenopsis, Pheidole y Azteca fueron los géneros más abundantes. La depredación fue significativamente menor en ausencia de hormigas, aunque no se presentó diferencias entre estratos. Los huevos y pupas resultaron más depredados y las larvas no presentaron diferencia en la depredación en ningún experimento. Estos resultados muestran la importancia de las hormigas en el control del minador en las condiciones de manejo del cafetal bajo estudio, mismo que fue representativo de la región.

Resumen en inglés

The coffee leaf miner is an important pest in main coffee producing countries, but in Mexico it is not a pest, which is attributed to the presence of natural enemies particularly ants. This study evaluated the impact of ants on coffee leaf miner population, and was conducted in a coffee field in Cacahoatán, Chiapas, during two seasons of the year (dry and raining seasons). Ant species composition was evaluated on the ground and on coffee plants; impact of these ants on the leaf miner in both layers was determined by means of experiments with sentinels and exclusion experiments. Fifty species of ants were registered, with greater richness and abundance in the dry season; 37 of them with predatory habits being Solenopsis, Pheidole and Azteca the most abundant genera. The percentage of predated individuals did not vary between ground and plant. Coffee leaf miner predation turned out to be significantly less in the absence of ants. Leaf miner eggs and pupae suffered higher rates of predation. These results showed the importance of the ants in the control of the coffee leaf miner under the management conditions of the coffee plantation, which was representative of the region.

Índice

Resumen
Abstract
Dedicatoria
Agradecimientos
Lista de Figuras
Lista de Cuadros
1.- Introducción
2.- Materiales y Métodos
2.1.- Área de estudio
2.2.- Experimento 1: Diversidad y riqueza de hormigas
2.3.- Experimento 2: Depredación de L. coffeella en planta y suelo
2.4.- Experimento 3: Depredación con exclusión de hormigas
2.5.- Análisis estadístico
3.- Resultados
3.1.- Recolección de hormigas
3.2.- Depredación de L. coffeella en -planta y suelo
3.3.- Depredación con exclusión de hormigas
4.- Discusión
5.- Conclusiones
6.- Literatura Citada


2.
Artículo
Impacts of weather, shade cover and elevation on coffee leafminer Leucoptera coffeella (Lepidoptera: Lyonetiidae) population dynamics and natural enemies
Lomelí Flores, J. Refugio ; Barrera, Juan F. (coaut.) ; Bernal, Julio S. (coaut.) ;
Contenido en: Crop Protection Vol. 29, no. 9 (September 2010), p. 1039-1048 ISSN: 0261-2194
Resumen en: Inglés |
Resumen en inglés

We assessed the influences of ambient temperature, rainfall, shade cover and elevation on seasonal abundance of coffee leafminer Leucoptera coffeella (Guérin-Ménèville) and its natural enemies in coffee farms in the Soconusco region of Chiapas, Mexico. Mined coffee leaves were most abundant during the rainy season (i.e. historical average rainfall >200 mm/mo, April–November) compared to the dry season (<100 mm/mo, December–March), and at low (<600 m asl) relative to high (>900 m asl) elevations. The abundance of mined leaves increased with rainfall, and decreased with maximum daily temperatures. Coffee leafminer survivorship was highest during the dry season (>40%), when predation was lowest (<10%). Predation was the main source of coffee leafminer mortality, and was greatest during the rainy season (>25%) when coffee leafminer incidence was highest (>30% mined leaves per plant). None of the weather variables that were evaluated (viz. maximum and minimum temperatures, and rainfall) significantly impacted parasitism ratios.

Shade cover moderated on-farm temperatures, by reducing maximum daily temperatures and any potential, direct impacts of rainfall on coffee leafminer, by providing partial shelter from rainfall, but did not significantly affect coffee leafminer incidence. In 48 h laboratory trials, coffee leafminer oviposition was highest at 28 °C (not, vert, similar15 eggs/female), minimal at 25 °C (not, vert, similar3 eggs) and nil at 20 °C, and higher during night-time hours (>8 eggs/female/day) compared to day-time hours (<1 egg). Historical average temperatures were higher at low elevation (yearly average ca. 25 °C; range = 18.0–32.0 °C) than at high elevation (ca. 21 °C; 13.5–28.5 °C), and we predicted that physical environmental conditions (i.e. night-time hours with temperatures > 20 °C) were permissive of coffee leafminer oviposition during twice as many hours each year at low elevation (4060 h) compared to high elevation (2081 h). Overall, our results suggested that evident differences in the abundance of coffee leafminer between elevations may be due in considerable part to differences in ambient temperatures, particularly night-time temperatures, rather than rainfall, shade cover, or elevation per se.


3.
- Artículo con arbitraje
Chemical analysis of female volatiles and field response of the coffee leafminer moth (Lepidoptera: Lyonetiidae), to stereoisomers of its major sex pheromone component
Malo Rivera, Edi Álvaro ; Rojas, Julio C. (coaut,) ; López Guillén, Guillermo (coaut.) ; Barrera, Juan F. (coaut.) ;
Contenido en: Florida Entomologist Vol. 92, no. 4 (December, 2009), p. 548-553 ISSN: 1938-5102
PDF PDF
Resumen en: Español | Inglés |
Resumen en español

Nosotros estudiamos los volátiles emitidos por hembras del minador de la hoja del café, Leucoptera coffeella, colectados en plantaciones de café de la región del Soconusco, Chiapas, México. Nuestros resultados confirman los resultados previos que la hembra de L. coffeella emite (5,9)-dimetilpentadecano como compuesto mayoritario y (5,9)-dimetilhexadecano como minoritario. Los resultados de la evaluación en campo de los estereoisómeros del compuesto mayoritario mostraron que las trampas delta cebadas con (5 S ,9 R )-dimetilpentadecano presentaron capturas significativamente mayores comparadas con las capturas de trampas cebadas con (5 R ,9 R )-dimetilpentadecano, (5 R ,9 S )-dimetilpentadecano y el control. El número promedio de minadores capturados en trampas cebadas con (5 S ,9 S )-dimetilpentadecano fue similar al capturado con (5 R ,9 R )-dimetilpentadecano. Los resultados de este trabajo son discutidos considerando la posibilidad que algunos de estos estereoisómeros puedan ser usados como cebo para el monitoreo del minador de la hoja del café.

Resumen en inglés

We analyzed the volatiles emitted by Mexican populations of the female coffee leafminer moth Leucoptera coffeella that were collected in coffee plantations located in the Soconusco region of Chiapas. Our results confirmed previous results that L . coffeella females emitted 5,9-dimethylpentadecane as the major and 5,9-dimethylhexadecane as the minor component. Field response of the coffee leafminer moth to stereoisomers of the major component showed that delta traps baited with (5 S ,9 R )-dimethylpentadecane caught a significantly greater number of coffee leafminer males when compared to those captured by traps baited with (5 R ,9 R )-dimethylpentadecane, (5 R ,9 S )-dimethylpentadecane and the control. The number of coffee leafminer captured by traps baited with (5 S ,9 S )-dimethylpentadecane was not significantly different from the number captured by traps baited with (5 R ,9 R )-dimethylpentadecane. The results are discussed in view of the possibility of using stereoisomers as bait for monitoring the leafminer moth.


4.
Capítulo de libro - Memoria en extenso
*Solicítelo con su bibliotecario/a
Hormigas depredadoras del minador de la hoja del café, Leucoptera coffeella (Lepidoptera: Lyonetiidae) en el Soconusco, Chiapas, México
Lomelí Flores, J. Refugio ; Bernal, Julio S. (coaut.) ; Barrera, Juan F. (coaut.) ; Quiroz Robledo, Luis N. (coaut.) ;
Contenido en: XXXI congreso nacional de control biológico: memoria Zacatecas, Zacatecas, México : Universidad Autónoma de Zacatecas, Sindicato del Personal Académico, 2008 p. 313-316 ISBN:968-9099-10-8
Nota: Solicítelo con su bibliotecario/a

5.
Artículo
*En hemeroteca, SIBE-Tapachula
Impact of natural enemies on coffee leafminer Leucoptera coffeella (Lepidoptera: Lyonetiidae) population dynamics in Chiapas, Mexico
Lomeli Flores, J. Refugio ; Barrera, Juan F. (coaut.) ; Bernal, Julio S. (coaut.) ;
Contenido en: Biological Control Vol. 51, no. 1 (October 2009), p. 51-60 ISSN: 1049-9644
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
44448-30 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Tapachula
Resumen en: Inglés |
Resumen en inglés

Coffee leafminer, Leucoptera coffeella, is a pest in many New World coffee growing areas. Previous studies suggested that its population dynamics were strongly affected by natural enemies, particularly of larvae, and physical environmental conditions. Our study documented through field surveys and life table analyses (i) the natural enemy complex associated with coffee leafminer and (ii) the impacts of natural enemies on the population dynamics of coffee leafminer, on coffee (Coffea arabica) at two elevations and two rainfall levels in the Soconusco region of Chiapas, Mexico. Twenty-two larval parasitoid species (including 14 morphospecies) were collected. Egg and pupal parasitoids were not recovered. Life table analyses showed that parasitism contributed 10% of real mortality, and parasitism rates were 8–10-fold higher at the low (<550 m) versus high (>950 m) elevation; parasitism rates were similar under low (<100 mm) and high (>400 mm) rainfall. Seventeen predator species (including five morphospecies) were collected, of which most were ants (Formicidae, 14 species) that contributed >58% of real mortality.

Life table analyses showed that predation rates were higher at high versus low elevation and under high versus low rainfall. Independently of elevation and rainfall, egg predation (likely by ants) was the most important source of indispensable mortality (range = 0.13–0.30), except at low elevation and high rainfall where pupal predation (=0.14) was similarly important. Also, predation was the main source of coffee leafminer larval and pupal mortality during a 13-month period in a low elevation coffee farm and was highest during the rainy season (>400 mm rainfall/month), when coffee leafminer prevalence was highest. Overall, predation of eggs and pupae (the latter particularly at low elevation), mostly by ants, were the most important sources of coffee leafminer mortality. Because ants were the main source of coffee leafminer egg and pupal mortality, their importance and potential role in coffee pest management strategies were discussed.


6.
Artículo
*En hemeroteca, SIBE-San Cristóbal
Arboreal ant abundance and leaf miner damage in coffee agroecosystems in Mexico
De la Mora, Aldo ; Livingston, George A. (coaut.) ; Philpott, Stacy M. (coaut.) ;
Contenido en: Biotropica Vol. 40, no. 6 (November 2008), p. 742-746 ISSN: 0006-3606
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
46895-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-San Cristóbal
PDF
Resumen en: Español | Inglés |
Resumen en español

Agroecosistemas de café con sombra tradicionalmente tienen pocos problemas de plagas debido potencialmente a la alta abundancia y diversidad de depredadores. Sin embargo, con la intensificación de cafetales (e.g. remoción o poda de la sombra), algunos problemas de plagas aumentan. Por ejemplo, erupciones del minador de la hoja del café están vinculadas con manejo de sombra más intensivo e aumentos en el uso de agroquímicos. Evidencia demuestra que avispas parasitoides controlan al minador de la hoja del café, pero pocos estudios han examinado la función de los depredadores, como las hormigas, que son abundantes y diversas en cafetales. Acá, examinamos vinculaciones entre comunidades de hormigas arbóreas e incidencia del minador de la hoja del café en cafetales en el sur de México. Examinamos la relación entre incidencia y severidad de ataque del minador y (1) variabilidad en cobertura del dosel, densidad de árboles, diversidad de árboles, abundancia relativa de árboles de Inga spp., (2) presencia de Azteca instabilis, una hormiga arbórea y dominante, y (3) el numero de especies y de nidos de hormigas arbóreas que habitan en las ramas de café. Encontramos que diferencias en vegetación entre parcelas no correlacionaron con daño del minador. Además, presencia de A. instabilis no influyó en la presencia o severidad de daño del minador. La proporción de hojas con daño del minador bajó significativamente en áreas en donde la abundancia de hormigas que habitan en las ramas de café era mayor pero no en donde la riqueza era mayor. Estos resultados indican que la abundancia de hormigas que habitan en las ramas de café en cafetales de sombra quizás contribuye en mantener bajas las poblaciones del minador, además que hormigas proveen servicios al ecosistema importantes en agroecosistemas del café.

Resumen en inglés

Shaded coffee agroecosystems traditionally have few pest problems potentially due to higher abundance and diversity of predators of herbivores. However, with coffee intensification (e.g., shade tree removal or pruning), some pest problems increase. For example, coffee leaf miner outbreaks have been linked to more intensive management and increased use of agrochemicals. Parasitic wasps control the coffee leaf miner, but few studies have examined the role of predators, such as ants, that are abundant and diverse in coffee plantations. Here, we examine linkages between arboreal ant communities and coffee leaf miner incidence in a coffee plantation in Mexico. We examined relationships between incidence and severity of leaf miner attack and: (1) variation in canopy cover, tree density, tree diversity, and relative abundance of Inga spp. shade trees; (2) presence of Azteca instabilis, an arboreal canopy dominant ant; and (3) the number of arboreal twig-nesting ant species and nests in coffee plants. Differences in vegetation characteristics in study plots did not correlate with leaf miner damage perhaps because environmental factors act on pest populations at a larger spatial scale. Further, presence of A. instabilis did not influence presence or severity of leaf miner damage. The proportion of leaves with leaf miner damage was significantly lower where abundance of twig-nesting ants was higher but not where twig-nesting ant richness was higher. These results indicate that abundance of twig-nesting ants in shaded coffee plantations may contribute to maintenance of low leaf miner populations and that ants provide important ecosystem services in coffee agroecosystems.


7.
Tesis
Natural enemies and mortality factors of the coffee leafminer Leucoptera coffeella (Guérin-Ménèville) (Lepidoptera: Lyonetiidae) in Chiapas, Mexico / Lomeli Flores, J. Refugio
Lomelí Flores, J. Refugio ; Barrera, Juan F. (asesor) ;
Texas : Texas A&M University , 2007
Clasificación: TE/633.739780972 / L6
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020010517 (Disponible)
Disponibles para prestamo: 1
PDF
Resumen en: Inglés |
Resumen en inglés

Natural Enemies and Mortality Factors of the Coffee Leafminer Leucoptera coffeella (Guérin-Ménèville) (Lepidoptera: Lyonetiidae) in Chiapas, Mexico. (December 2007) J. Refugio Lomeli Flores, B.S.; M.S., Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, México Chair of Advisory Committee: Dr. Julio S. Bernal Through field surveys and laboratory experiments, this study assessed in part the impacts of host plant, natural enemies, and weather variables on coffee leafminer Leucoptera coffeella distribution and abundance at two elevations and two rainfall levels in coffee farms in Chiapas, Mexico. In addition, a checklist of Neotropical coffee leafminer parasitoids was assembled from field collections and literature review. Coffee leafminer field incidence was positively correlated with leaf nitrogen content and age, but in laboratory experiments coffee leafminers grew larger, developed faster, and had higher survivorship on leaves with moderate (2.9±0.01%) versus low (2.5±0.04%) or high (3.4±0.01%) nitrogen level, and on tough versus soft leaves. Ovipositional preference was not generally for leaves that maximized offspring performance. Coffee leafminer incidence was higher during the rainy versus dry season, and at low versus high elevation. Shade cover reduced ambient temperatures within coffee farms, but did not significantly affect coffee leafminer incidence.

The coffee leafminer predator complex included 16 morphospecies, ~88% of them ants (Formicidae), and contributed >58% of real mortality. Predation rates were higher at high versus low elevation, and under high versus low rainfall. Predation was the main source of coffee leafminer mortality throughout the year, and was highest during the rainy season, when coffee leafminer incidence was highest. Neotropical coffee leafminer parasitoids included 23 species of Eulophidae and seven of Braconidae. In Chiapas, 22 larval parasitoid morphospecies were collected. Egg and pupal parasitoids were not recovered. Parasitism accounted for <10% of real mortality, and rates were 8-10-fold higher at low versus high elevation. Parasitism rates were not significantly influenced by temperature or rainfall. Coffee leafminer oviposited mostly during the night, and less under low versus high temperatures. Average monthly temperature minima, which occur during the night, were generally lower at high (~18 oC) versus low (~20 oC) elevation farms. The incidence and abundance of coffee leafminer may differ between elevations due to differences in temperature, because at high elevation lower temperatures likely reduced coffee leafminer oviposition, and may have increased its mortality rate as a consequence of longer development time and exposure to natural enemies.


8.
Folleto - Artículo de divulgación de la ciencia publicado en revista
El minador de la hoja del café: una plaga explosiva regulada por enemigos naturales / Juan Francisco Barrera, Refugio Lomelí, Julio S. Bernal, ... [et al.]
Barrera, Juan F. (autor) ; Lomelí, Refugio (autor) ; Bernal, Julio S. (autor) ; Herrera Múñoz, Joel (autor) ; Malo Rivera, Edi Álvaro (autor) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2006
Clasificación: EE/633.73976 / M5
Bibliotecas: San Cristóbal , Tapachula
Cerrar
SIBE San Cristóbal
ECO010017211 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Tapachula
ECO020009144 (Disponible) , ECO020013699 (Disponible)
Disponibles para prestamo: 2

9.
Capítulo de libro
Parasitoides del minador de la hoja del café Leucoptera coffeella (lepidoptera: lyonetiidae) en el Soconusco, Chiapas, México
Lomeli Flores, Regufio ; Bernal, Julio S. ; Barrera, Juan F. ;
Clasificación: AR/633.739780972 / L6
Contenido en: XXIX congreso nacional de control biológico (Manzanillo, Colima, México : 05 al 10 de Noviembre de 2006) Manzanillo, Colima, México, : Universidad de Colima : Sociedad Mexicana de Control Biológico, 2016 p. 469-473
PDF

10.
Capítulo de libro - Memoria en extenso sin arbitraje
Respuesta electrofisiológica y de campo de Leucoptera coffeella a los estereoisomeros del compuesto mayoritario de su feromona sexual
Malo Rivera, Edi Álvaro (autor) ; Santiesteban Hernández, Antonio (autor) ; Valle Mora, Javier Francisco (autor) ;
Clasificación: AR/633.739780972 / M3
Contenido en: Entomología Mexicana 2006 / editores: Edith G. Estrada Venegas, Jesús Romero Nápoles, Armando Esquihua Martínez, Cándido Luna León, José Luis Rosas Acevedo Distrito Federal, México : Sociedad Mexicana de Entomología, 2006 Vol. 5, tomo 1, p. 312-316
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010019401 (Disponible)
Disponibles para prestamo: 1