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162 resultados encontrados para: AUTOR: Mora, Francisco
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1.
Artículo
Comparación de novaluron, piriproxifeno, spinosad y temefos como larvicidas contra Aedes aegypti en Chiapas, México
Marina Fernández, Carlos Félix (autor) ; Bond Compeán, Juan Guillermo (autor) ; Muñoz, José (autor) ; Valle Mora, Javier Francisco (autor) ; Quiroz Martínez, Humberto (autor) ; Torres Monzón, Jorge Aurelio (autor) ; Williams, Trevor (autor) ;
Disponible en línea
Contenido en: Salud Pública de México Volumen 62, número 4 (julio-agosto de 2020), p. 424-431 ISSN: 0036-3634
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Resumen en: Español | Inglés |
Resumen en español

Objetivo. Comparar la eficacia de tres larvicidas modernos para el control de Aedes aegypti en tanques de agua doméstica en Chiapas. Material y métodos. Se comparó la eficacia de piriproxifeno, novalurón, dos formulaciones de spinosad (gránulos y tabletas) y temefos en ovitrampas y tanques domésticos de agua. Resultados. El piriproxifeno y el temefos proporcionaron de 2 a 3 semanas de control de larvas en ovitrampas, mientras que los gránulos de spinosad y novaluron proporcionaron de 7 a12 semanas. Los tanques de agua tratados produjeron una reducción significativa en la oviposición por Ae. aegypti en las casas (p<0.001). Se encontró gran cantidad de larvas en los tanques tratados con temefos y piriproxifeno en comparación con los tratados con novaluron y tabletas de spinosad durante la mayor parte del estudio. Conclusión. Las formulaciones de spinosad en tabletas y novaluron fueron larvicidas efectivos en esta región. El bajo desempeño de temefos puede indicar una susceptibilidad reducida en poblaciones de Ae. aegypti en Chiapas.

Resumen en inglés

Objective. To compare the efficacy of three modern larvicides with the organophosphate temephos for control of Aedes aegypti in water tanks in Chiapas. Materials and methods. Trials were performed to compare the efficacy of pyriproxyfen, novaluron, two formulations of spinosad (granules and tablets) and temephos in oviposition traps and domestic water tanks. Results. Pyriproxyfen and temephos provided 2-3 weeks of complete control of larvae in oviposition traps, whereas spinosad granules and novaluron provided 7-12 weeks of control. Treatment of water tanks resulted in a significant reduction in oviposition by Ae. aegypti in houses (p<0.001). Higher numbers of larvae were present in temephos and pyriproxyfen-treated water tanks compared to novaluron and spinosad tablet treatments during most of the study. Conclusion. Spinosad formulations and novaluron were effective larvicides in this region. The poor performance of temephos may be indicative of reduced susceptibility in Ae. aegypti populations in Chiapas.


2.
- Artículo con arbitraje
Biodiversity recovery of Neotropical secondary forests
Rozendaal, Danaë M. A. (autora) ; Bongers, Frans (coaut.) ; Aide, T. Mitchell (coaut.) ; Álvarez Dávila, Esteban (autor) ; Ascarrunz, Nataly (autora) ; Balvanera, Patricia (autora) ; Becknell, Justin M. (coaut.) ; Bentos, Tony V. (coaut.) ; Brancalion, Pedro H. S. (autor) ; Cabral, George A. L. (coaut.) ; Calvo Rodríguez, Sofía (autora) ; Chave, Jerome (coaut.) ; César, Ricardo G. (autor) ; Chazdon, Robin L. (autor) ; Condit, Richard (autor) ; Dallinga, Jorn S. (coaut.) ; Almeida Cortez, Jarcilene Silva (coaut.) ; De Jong, Bernardus Hendricus Jozeph (autor) ; Oliveira, Alexandre A. de (autor) ; Denslow, Julie S. (autor) ; Dent, Daisy H. (coaut.) ; DeWalt, Saara J. (autora) ; Dupuy, Juan Manuel (autor) ; Durán, Sandra M. (autora) ; Dutrieux, Loïc P. (coaut.) ; Espírito Santo, Mario M. (autor) ; Fandino, María C. (autora) ; Fernandes, G. Wilson (autor) ; Finegan, Bryan (coaut.) ; García, Hernando (autor) ; González Valdivia, Noel Antonio (autor) ; Granda Moser, Vanessa (autora) ; Hall, Jefferson S. (autor) ; Hernández Stefanoni, José Luis (autor) ; Hubbell, Stephen (autor) ; Jakovac, Catarina C. (autora) ; Hernández, Alma Johanna (autora) ; Junqueira, André B. (autor) ; Kennard, Deborah (coaut.) ; Larpin, Denis (autora) ; Letcher, Susan G. (autora) ; Licona, Juan Carlos (autor) ; Lebrija Trejos, Edwin (autor) ; Marín Spiotta, Erika (autora) ; Martínez Ramos, Miguel (autor) ; Massoca, Paulo E. S. (autor) ; Meave, Jorge A. (autor) ; Mesquita, Rita C. G. (autora) ; Mora, Francisco (autor) ; Müller, Sandra C. (autora) ; Muñoz, Rodrigo (autor) ; Nolasco de Oliveira Neto, Silvio (autor) ; Norden, Natalia (autora) ; Nunes, Yule R. F. (coaut.) ; Ochoa Gaona, Susana (autora) ; Ortiz Malavassi, Edgar (autor) ; Ostertag, Rebecca (autora) ; Peña Claros, Marielos (autor) ; Pérez García, Eduardo A. (autor) ; Piotto, Daniel (autor) ; Powers, Jennifer S. (autora) ; Aguilar Cano, José (autor) ; Rodríguez Buritica, Susana (autora) ; Rodríguez Velázquez, Jorge (autor) ; Romero Romero, Marco Antonio (autor) ; Ruíz, Jorge (autor) ; Sánchez Azofeifa, Gerardo Arturo (autor) ; Silva de Almeida, Arlete (autor) ; Silver, Whendee L. (coaut.) ; Schwartz, Naomi B. (coaut.) ; Thomas, William Wayt (coaut.) ; Toledo, Marisol (autora) ; Uriarte, María (autora) ; Valadares de Sá Sampaio, Everardo (autor) ; van Breugel, Michiel (autor) ; Van Der Wal, Hans (coaut.) ; Martins, Sebastião Venâncio (autor) ; Veloso, María D. M. (autor) ; Vester, Hans F. M. (coaut.) ; Vicentini, Alberto (autor) ; Vieira, Ima C. G. (coaut.) ; Villa, Pedro (autor) ; Williamson, G. Bruce (autor) ; Zanini, Kátia J. (autora) ; Zimmerman, Jess (coaut.) ; Poorter, Lourens (coaut.) ;
Disponible en línea
Contenido en: Science Advances Vol. 5, no. 3, eaau3114 (March 2019), p. 1-10 ISSN: 2375-2548
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Resumen en: Inglés |
Resumen en inglés

Old-growth tropical forests harbor an immense diversity of tree species but are rapidly being cleared, while secondary forests that regrow on abandoned agricultural lands increase in extent. We assess how tree species richness and composition recover during secondary succession across gradients in environmental conditions and anthropogenic disturbance in an unprecedented multisite analysis for the Neotropics. Secondary forests recover remarkably fast in species richness but slowly in species composition. Secondary forests take a median time of five decades to recover the species richness of old-growth forest (80% recovery after 20 years) based on rarefaction analysis. Full recovery of species composition takes centuries (only 34% recovery after 20 years). A dual strategy that maintains both old-growth forests and species-rich secondary forests is therefore crucial for biodiversity conservation in human-modified tropical landscapes.


3.
- Artículo con arbitraje
The biology of Antiteuchus innocens (Hemiptera: Pentatomidae) under field conditions
Holguín Meléndez, Francisco (autor) ; González Gómez, Rebeca (autora) ; Valle Mora, Javier Francisco (autor) ; Infante, Francisco (autor) ; Huerta Palacios, Graciela (autora) ;
Disponible en línea
Contenido en: Florida Entomologist Vol. 102, no. 1 (April 2019), p. 85-89 ISSN: 0015-4040
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Resumen en: Español | Inglés |
Resumen en español

Antiteuchus innocens Engleman & Rolston (Hemiptera: Pentatomidae) es una chinche fitófaga que se alimenta de varias especies de pinos en las montañas de Chiapas, México. Hasta ahora se desconoce la biología y ecología de esta especie en los ecosistemas de pinos. En el presente trabajo se presenta información relacionada con el ciclo de vida de A. innocens con el objetivo de proporcionar información que permita esclarecer su papel como plaga de los pinos. Nuestras observaciones de campo verificaron que, los primeros adultos de A. innocens, típicamente aparecen en abril de cada año y alcanzan la abundancia más alta en mayo. Posteriormente, los adultos disminuyen gradualmente y para noviembre ya no son detectables. Las masas de huevos de esta chinche son puestas en la parte abaxial de las ramas primarias, y sobre los estróbilos femeninos de los pinos. Después de la eclosión de huevos, la hembra permanece con sus crías, presuntamente para brindarles cuidado maternal. Determinamos que A. innocens es una chinche oligófaga que se alimenta sobre Pinus oocarpa Shiede, Pinus maximinoi H.E. Moore, y Pinus devoniana Lindley (todos Pinaceae). Esta especie es univoltina bajo las condiciones climáticas de Chiapas, con un ciclo de vida de aproximadamente 310 d de huevo a adulto. Los tiempos para el desarrollo de inmaduros de A. innocens son como sigue (media ± ES): 8 (0.66), 8 (0.92), 41 (7.5), 79 (8.1), 122 (5.9), y 52 (6.9) días, para la incubación de huevos, primero, segundo, tercero, cuarto, y quinto instar, respectivamente. La longevidad de adultos fue estimada en 54 d. La duración más larga (> 4 meses) of A. innocens en el cuarto instar, indica la posibilidad de pasar por una diapausa, sin embargo, este hecho no fue verificado.

Resumen en inglés

Antiteuchus innocens Engleman & Rolston (Hemiptera: Pentatomidae) feeds on several species of pines in the highlands of Chiapas, Mexico. The biology and ecology of this species in pine ecosystems is unknown. In this paper, information concerning the life cycle of A. innocens is presented with the objective of providing information that elucidates its role as a pest of pines. Our field observations verified that the first adults of A. innocens typically appear by Apr of each year and reach the highest abundance in May. Afterwards, adults decrease gradually and are undetectable by Nov. Egg masses are laid on abaxial regions of primary branches, and on female strobili of pines. Following egg-hatching, the female remains with its brood, presumably for maternal care. We determined that A. innocens is an oligophagous species, feeding on Pinus oocarpa Shiede, Pinus maximinoi H.E. Moore, and Pinus devoniana Lindley (all Pinaceae). This species is univoltine under the climatic conditions of Chiapas, with a life cycle of about 310 d from egg to adult. Juvenile development of A. innocens is as follows (mean ± SE): 8 (0.66), 8 (0.92), 41 (7.5), 79 (8.1), 122 (5.9), and 52 (6.9) d for egg incubation, first, second, third, fourth, and fifth instar, respectively. The longevity of adults was estimated as 54 d. The longest duration (> 4 mo) of A. innocens occurred in the fourth instar, suggesting the possibility of diapause in this instar; however, this was not verified.


4.
- Artículo con arbitraje
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Does Beauveria bassiana (Hypocreales: Cordycipitaceae) affect the survival and fecundity of the parasitoid Coptera haywardi (Hymenoptera: Diapriidae)?
Martínez Barrera, Olga Yaneth (autora) ; Toledo, Jorge (autor) ; Liedo Fernández, Pablo (autor) ; Gómez Ruiz, Jaime (autor) ; Valle Mora, Javier Francisco (autor) ; Cancino Díaz, Jorge Luis (autor) ; Montoya Gerardo, Pablo Jesús (autor) ;
Contenido en: Environmental Entomology Vol. 48, no. 1 (February 2019), p. 156–162 ISSN: 0046-225X
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Resumen en español

Se estudió bajo condiciones de laboratorio el efecto del hongo entomopatógeno Beauveria bassiana (Balsamo) Vuillemin sobre el desarrollo de estados inmaduros, supervivencia y fecundidad de los adultos de Coptera haywardi (Oglobin). El hongo se aplicó como conidio seco sobre pupas de Anastrepha obliqua (Macquart) (Diptera: Tephritidae) parasitadas y en adultos de dos grupos de edad (1–4 d y 5–10 d). El hongo no ocasionó efectos negativos en el desarrollo de los estados inmaduros, dado que en la emergencia de adultos no hubo diferencias con el testigo. Ambos sexos y grupos de edades de los adultos fueron susceptibles al hongo. Los machos tuvieron una vida más corta que las hembras incluso en los individuos no tratados. La infección del hongo incrementó la mortalidad, pero no hubo efecto sobre la fecundidad durante los primeros 18 días de vida adulta, ya que la fecundidad neta fue de 26.7 y 26.3 parasitoides por hembra tratada y no tratada, respectivamente. Nuestros resultados sugieren que dada la baja susceptibilidad de la pupa parasitada y el no efecto sobre la fecundidad neta durante los primeros 18 días de vida adulta, es posible desarrollar estrategias de manejo usando estos dos enemigos naturales en el control biológico de A. obliqua.

Resumen en inglés

The effect of the entomopathogenic fungus Beauveria bassiana (Balsamo) Vuillemin on the development of immature stages, and survival and fecundity of Coptera haywardi (Oglobin) adults was studied under laboratory conditions. The fungus was applied as dry conidia on parasitized pupae of Anastrepha obliqua (Macquart) (Diptera: Tephritidae) and on parasitoid adults of two different age groups (1- to 4-d-old, and 5- to 10-d-old). The fungus caused no negative effects on the development of the immature stages, since there were no differences on the emergence of adults compared with the untreated control. Adults were susceptible to the fungus on both sexes and age groups. Males showed shorter lifespan than females, even in untreated individuals. Despite the increased adult mortality produced by the fungus there was no effect on fecundity during first 18 d of adult life, as the net fecundity was 26.7 and 26.3 parasitoids per female treated and untreated, respectively. Our results suggest that, given the low susceptibility of parasitized pupae and the no effect on fecundity during the first 18 d of adult life, it is possible to develop management strategies using these two natural enemies in the biological control against A. obliqua.


5.
Artículo - Nota científica con arbitraje
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Effect of spinosad combined with Beauveria bassiana (Hypocreales: Clavicipitaceae) on Hypothenemus hampei (Coleoptera: Curculionidae) under laboratory conditions
Morales, Arcadio D. (autor) ; Castillo Vera, Alfredo (autor) ; Cisneros Hernández, Juan (autor) ; Valle Mora, Javier Francisco (autor) ; Gómez Ruiz, Jaime (autor) ;
Contenido en: Journal of Entomological Science Vol. 54, no. 1 (January 2019), p. 106-109 ISSN: 0749-8004
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6.
Artículo
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Efficacy of selected insecticides against Frankliniella spp. (Thysanoptera: Thripidae) in mango orchards
Lucero, Fidel ; Infante, Francisco (coaut.) ; Pérez López, Elsa Jeanneth (coaut.) ; Valle Mora, Javier Francisco (coaut.) ; Esquinca Avilés, Héctor Armando (coaut.) ; Castillo Vera, Alfredo (coaut.) ; Ortíz, José A. (coaut.) ;
Contenido en: Journal of Entomological Science Vol. 54, no. 2 (April 2019), p. 94-97 ISSN: 1366-638X
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7.
Artículo
Fertility life tables of Raoiella indica (Trombidiformes: Tenuipalpidae) at different temperature and humidity levels
Martínez Mejía, David (autor) ; Otero Colina, Gabriel (autor) ; González Gómez, Rebeca (autora) ; Pérez Panduro, Alejandro (autor) ; Valle Mora, Javier Francisco (autor) ;
Disponible en línea
Contenido en: Revista Colombiana de Entomología Volumen 45, número 1, e7810 (2019), p. 1-8 ISSN: 2665-4385
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Resumen en: Español | Inglés |
Resumen en español

Se realizó un estudio de tablas de vida y fecundidad de Raoiella indica en foliolos de palma de coco (Cocos nucifera) a temperatura y humedad relativa (HR) controladas, en Texcoco, México, con el objetivo de estimar los parámetros de incremento poblacional de este ácaro. Cohortes de 50 huevos de Raoiella indica de 12 horas de edad se incubaron a 22,5, 25, 27,5 o 30 °C y 40-50 % de HR, así como a 27,5 °C con 30-40, 60-70 u 80-90 % de HR. Se les observó diariamente hasta que murió el último. A las hembras que alcanzaron el estado adulto se les proporcionaron dos machos para promover su apareamiento y luego se registró diariamente su oviposición. Machos de un día de edad se pusieron diariamente en contacto cada uno con una deutoninfa quiescente hembra para observar cuántas veces un macho podía copular, cuando las deutoninfas alcanzaran el estado adulto. Con todas las temperaturas y HR’s, la mortalidad se distribuyó uniformemente a lo largo de las observaciones. Tasa de desarrollo, reproducción y, consecuentemente, parámetros de incremento poblacional, estuvieron significativamente asociados con la temperatura. La mayor tasa intrínseca de incremento poblacional ocurrió a 27,5 °C y 40-50 % de HR. Por sí sola, la HR no afectó significativamente a dichas variables, aunque sus valores extremos tuvieron ligeros efectos negativos. Se observaron aproximadamente cuatro hembras por cada macho. Los machos copularon en promedio con 4,56 hembras; ello sugiere que entre 20 y 30 % de machos bastan para fecundar a todas las hembras presentes.

Resumen en inglés

A study of fertility life tables of Raoiella indica was carried out on coconut (Cocos nucifera) leaflets at controlled temperature and relative humidity (RH) in Texcoco, Mexico, with the objective of estimating the parameters of population increase of this mite. Cohorts of 12-hour-old Raoiella indica eggs were incubated at 22.5, 25, 27.5 or 30 °C and 40-50 % RH, as well as 27.5 °C with 30-40, 60-70 or 80-90 % RH. They were observed daily until the last mite died. Females that attained adulthood were provided with two males to promote mating and their oviposition was recorded daily. Each one-day-old male was put in contact with a female quiescent deutonymph daily to determine how many times a male could copulate after the deutonymph became an adult. With all temperatures and RH’s, mortality was evenly distributed throughout the observations. Developmental rate, reproduction, and, consequently, parameters of population increase were significantly associated with temperature. The highest rate of population increase took place at 27.5 °C and 40-40 RH. By itself, RH did not significantly affect those variables, although its extreme values showed slight negative effects. Approximately four females per male were observed. Males copulated with 4.56 females on average; this suggests that between 20 and 30 % of the males are enough to fertilize all females present.


8.
- Artículo con arbitraje
Fine-tuned intruder discrimination favors ant parasitoidism
Pérez Lachaud, Gabriela (autora) ; Rocha, Franklin H. (autor) ; Valle Mora, Javier Francisco (autor) ; Hénaut, Yann (autor) ; Lachaud, Jean Paul (autor) ;
Disponible en línea
Contenido en: PLoS One Vol. 14, no. 1, art. no. e0210739 (January 2019), p. 1-21 ISSN: 0187-6376
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Resumen en: Inglés |
Resumen en inglés

diversity of arthropods (myrmecophiles) thrives within ant nests, many of them unmolested though some, such as the specialized Eucharitidae parasitoids, may cause direct damage to their hosts. Ants are known to discriminate between nestmates and non-nestmates, but whether they recognize the strength of a threat and their capacity to adjust their behavior accordingly have not been fully explored. We aimed to determine whether Ectatomma tuberculatum ants exhibited specific behavioral responses to potential or actual intruders posing different threats to the host colony and to contribute to an understanding of complex ant-eucharitid interactions. Behavioral responses differed significantly according to intruder type. Ants evicted intruders that represented a threat to the colony’s health (dead ants) or were not suitable as prey items (filter paper, eucharitid parasitoid wasps, non myrmecophilous adult weevils), but killed potential prey (weevil larvae, termites). The timing of detection was in accordance with the nature and size of the intruder: corpses (a potential source of contamination) were detected faster than any other intruder and transported to the refuse piles within 15 min. The structure and complexity of behavioral sequences differed among those intruders that were discarded. Workers not only recognized and discriminated between several distinct intruders but also adjusted their behavior to the type of intruder encountered.

Our results confirm the previously documented recognition capabilities of E. tuberculatum workers and reveal a very fine-tuned intruder discrimination response. Colony- level prophylactic and hygienic behavioral responses through effective removal of inedible intruders appears to be the most general and flexible form of defense in ants against a diverse array of intruders. However, this generalized response to both potentially lethal and harmless intruders might have driven the evolution of ant-eucharitid interactions, opening a window for parasitoid attack and allowing adult parasitoid wasps to quickly leave the natal nest unharmed.


9.
- Artículo con arbitraje
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Resumen en: Español | Inglés |
Resumen en español

Purpureocillium lilacinum (Thom) Luangsa-ard, Houbraken, Hywel-Jones & Samson (Hypocreales: Ophiocordycipitaceae) es un hongo comúnmente utilizado en el control de nematodos y ha sido reportado como patógeno de insectos. Sin embargo, son poco conocidos los efectos que causa sobre los insectos. Aquí se evaluó la patogenicidad de nueve aislamientos y la virulencia y efectos subletales de dos aislamientos en adultos de Anastrepha ludens (Loew) (Diptera: Tephritidae). Los ensayos demostraron que los nueve aislamientos fueron patogénicos, y causaron porcentajes de mortalidad que oscilaron entre 28.8 y 52.4% y un TL50 de 18 d o más. La cepa CFFSUR-A53 fue más virulenta que la cepa CFFSUR-A60, con valores de CL50 de 7.62 × 106 y 5.2 × 109 conidios por mL, respectivamente. Ambos aislamientos redujeron en 65 y 37% la esperanza de vida de las moscas, disminuyeron en 78 y 36% la fecundidad de las hembras, y en 31.4 y 18.5% la eclosión de los huevos, respectivamente.

Resumen en inglés

Purpureocillium lilacinum (Thom) Luangsa-ard, Houbraken, Hywel-Jones & Samson (Hypocreales: Ophiocordycipitaceae) is a fungus commonly used for controlling nematodes, and also has been reported as an insect pathogen. However, little is known about its effects on insects. Here, the pathogenicity of 9 isolates and the virulence and sublethal effects of 2 isolates were evaluated to control adult Anastrepha ludens (Loew) (Diptera: Tephritidae). The pathogenicity assays demonstrated that the 9 isolates were pathogenic, with mortality percentages ranging from 28.8 to 52.4% and LT50 values were 18 d or more. The strain CFFSUR-A53 was more virulent than CFFSUR-A60, with LC50 values of 7.62 × 106 and 5.2 × 109 conidia per mL, respectively. The isolates reduced the life expectancy of the flies by 65 and 37%, decreased fecundity by 78 and 36%, and reduced egg hatching by 31.4 and 18.5%, respectively.


10.
- Artículo con arbitraje
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Resumen en: Inglés |
Resumen en inglés

The conservation of pollinator diversity is fundamental to maintaining sustainable agricultural systems and food security. Some agricultural systems support pollinator diversity, while others may lead to their decline. Previous studies have evaluated the impacts of agricultural intensification on pollinators in temperate climates regions, but in tropical regions these impacts have been evaluated by only very few studies. We conducted a study in southeastern Mexico, in order to understand the effects of three agricultural systems on bee diversity in a tropical landscape. We compared 18 sites at two different scales (plot scale and landscape scale). We found a link between agricultural system intensity level at the plot scale and forest proportion at the landscape scale: land use intensity was low at both scales in 7 polycultures, low at plot scale and high at landscape scale in 4 pastures, and high at both scales in 7 monocultures. We collected bees at all sites, and found an overall high bee richness, with a total of 127 species. Bee richness was compared across agricultural systems using diversity accumulation curves with iNEXT package. Both polycultures and pastures had significantly higher richness as monocultures. We constructed bee species guilds according to ecological and life-history traits (i.e. size, sociality and nesting) and found that whatever the trait considered, the species richness in the different agricultural systems was most often affected in the same way than the complete community richness.

Our results show, for the first time in tropical conditions that agricultural systems with low-intensity farming practices and forested landscape allow the preservation of a significantly higher diversity of bees than agricultural systems with high-intensity farming practices and highly deforested landscape. Considering that bee diversity is key to maintaining crop productivity, these findings can help scientists, policy-makers, and community members design policies that support both agricultural production and biodiversity conservation in the tropics.