|
|
|
| Registros recuperados: 50 | |
|
|
| García López, Elvis. |
| La proliferación vegetativa y floral (PVF) del mango (Mangifera indica L.) inducida por Fusarium spp. es una de las principales limitantes fitosanitarias en México y el mundo. Con el propósito de identificar cultivares mono y poliembriónicos tolerantes a Fusarium spp. se realizó la presente investigación en un vivero experimental en Huamuxtitlán, Guerrero, México. La patogenicidad se verificó en plantas juveniles sanas de mango al infiltrar una suspensión conidial del hongo (2 x 106 conidios/mL) y reproducir los síntomas típicos de PVF. Una combinación de aislamientos de Fusarium subglutinans, F. proliferatum y F. oxysporum superó en severidad a una cepa de F. oxysporum en los cultivares más susceptibles (Haden y Cotaxtla-1). El tiempo de expresión de... |
|
Palavras-chave: Incidencia; Susceptibilidad; Patogenicidad; Histopatología; Incidence; Susceptibility; Pathogenicity; Histopathology; Fitopatología; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/718 |
| |
|
| |
|
|
| Ibarra Cortés, Karla Haydeé. |
| La cochinilla rosada del hibisco (CRH), Maconellicoccus hirsutus, es una plaga importante a nivel mundial que afecta diversos cultivos. Las estrategias más usadas para su control son el químico, y el biológico mediante parasitoides y depredadores. Sin embargo, el uso de hongos entomopatógenos a pesar de ser una herramienta muy importante, ha sido muy poco estudiado. Con base en esto, diversos experimentos fueron realizados para seleccionar un aislamiento para el control de esta plaga. Se estudió el efecto de la temperatura (15, 20, 25 y 30 °C) en el desarrollo in vitro de 16 aislamientos de las especies Beauveria bassiana, Metarhizium anisopliae, Lecanicillium lecanii y Paecilomyces fumosoroseus. Posteriormente, se estimó la susceptibilidad de ninfas de... |
|
Palavras-chave: CRH; Hongos entomopatógenos; Desarrollo in vitro; Susceptibilidad; PHM; Entomopathogenic fungi; In vitro development; Susceptibility; Maestría; Entomología y Acarología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/417 |
| |
|
|
| Negrete García, Román. |
| Las gallinas ciegas se encuentran entre las plagas de suelo de mayor importancia económica en el mundo, incluyendo México. Considerando que el suelo es el ambiente más favorable para los nematodos entomopatógenos (NEP), es posible recuperar aislamientos de NEP que puedan tener el potencial para ser desarrollados como agentes de control biológico de esta plaga. Por esta razón se llevó a cabo un muestreo en el estado de Guanajuato, una de las regiones agrícolas más importantes de México. La colecta de nematodos se realizó utilizando larvas de Galleria mellonella como cebo en lugares con grandes poblaciones de gallina ciega. Los nematodos obtenidos se identificaron utilizando métodos morfológicos y moleculares. Después, la susceptibilidad de la gallina ciega... |
|
Palavras-chave: Gallina ciega; Steinernema; Muestreo; Susceptibilidad; White grub; Survey; Susceptibility; Entomología y Acarología; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/1851 |
| |
|
|
| Salazar Ordaz, Liliana. |
| El presente trabajo se llevó a cabo para determinar la distribución e incidencia de Bremia lactucae en los estados de Guanajuato, Puebla y Zacatecas, asimismo se evaluó la resistencia a este patógeno y la calidad postcosecha en 18 variedades de lechuga: Yuma, Costello, Grizzly, Honcho II, Rhino, Top Billings, Warrior, Magnum, Annie, Cool Guard, Denver, Raider, Stallion, Top Gun, Sure Shot, Niner, Red Coach y 9852. Nuestros resultados permitieron confirmar la presencia del patógeno en los estados de Guanajuato, Zacatecas y Puebla donde la incidencia promedio fue 43.11%, 100% y 21.5% respectivamente. Las variedades de lechuga más cultivadas en estos estados fueron Sun Devil, Siskiyou y Coolguard. Sin embargo, las variedades con mayor intensidad de la... |
|
Palavras-chave: Lechuga; Bremia lactucae; Calidad postcosecha; Susceptibilidad; Lettuce; Postharvest quality; Susceptibility; Maestría; Fitopatología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/376 |
| |
|
|
| Ibarra Cortés, Karla Haydeé. |
| La cochinilla rosada del hibisco (CRH), Maconellicoccus hirsutus, es una plaga importante a nivel mundial que afecta diversos cultivos. Las estrategias más usadas para su control son el químico, y el biológico mediante parasitoides y depredadores. Sin embargo, el uso de hongos entomopatógenos a pesar de ser una herramienta muy importante, ha sido muy poco estudiado. Con base en esto, diversos experimentos fueron realizados para seleccionar un aislamiento para el control de esta plaga. Se estudió el efecto de la temperatura (15, 20, 25 y 30 °C) en el desarrollo in vitro de 16 aislamientos de las especies Beauveria bassiana, Metarhizium anisopliae, Lecanicillium lecanii y Paecilomyces fumosoroseus. Posteriormente, se estimó la susceptibilidad de ninfas de... |
|
Palavras-chave: CRH; Hongos entomopatógenos; Desarrollo in vitro; Susceptibilidad; PHM; Entomopathogenic fungi; In vitro development; Susceptibility; Maestría; Entomología y Acarología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/417 |
| |
|
| |
|
|
| Dias-Arieira,Cláudia Regina; Cunha,Tatiana PL da; Chiamolera,Fernando Marcelo; Puerari,Heriksen H; Biela,Fabio; Santana,Simone de M. |
| For this research we used 15 day-old seedlings which were transplanted to 2 L pots and inoculated with 4,000 nematode eggs plus juveniles (J2). After 60 days, the root systems were removed and the number of galls and eggs evaluated and used to calculate the nematode reproduction factor (RF). The tomato cv. Santa Cruz was used as a susceptible control. The experimental design was completely randomized, with six replications. Averages were compared using the Tukey or Scott-Knott test at 5%. For lettuce, Salad Bowl (Mimosa type), Elizabeth and Elisa (Lisa) and Vera cultivars (crisphead), the number of galls and the RF for M. javanica were statistically higher than for the control, whereas, for the other vegetable crops, the highest number of galls and eggs... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Vegetables; Susceptibility; Resistance; Root-knot nematodes. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000200023 |
| |
|
| |
|
|
| Segarra, Amelie; Mauduit, Florian; Faury, Nicole; Trancart, Suzanne; Degremont, Lionel; Tourbiez, Delphine; Haffner, Philippe; Barbosa-solomieu, Valerie; Pepin, Jean-francois; Travers, Marie-agnes; Renault, Tristan. |
| Background: Massive mortality outbreaks affecting Pacific oyster (Crassostrea gigas) spat in various countries have been associated with the detection of a herpesvirus called ostreid herpesvirus type 1 (OsHV-1). However, few studies have been performed to understand and follow viral gene expression, as it has been done in vertebrate herpesviruses. In this work, experimental infection trials of C. gigas spat with OsHV-1 were conducted in order to test the susceptibility of several bi-parental oyster families to this virus and to analyze host-pathogen interactions using in vivo transcriptomic approaches. Results: The divergent response of these oyster families in terms of mortality confirmed that susceptibility to OsHV-1 infection has a significant... |
| Tipo: Text |
Palavras-chave: Interactions; Ostreid herpesvirus 1; Gene expression; Susceptibility; Crassostrea gigas. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00199/31029/29431.pdf |
| |
|
|
| Kissel, Catherine; Laj, Carlo; Kienast, Markus; Bolliet, Timothe; Holbourn, Ann; Hill, Paul; Kuhnt, Wolfgang; Braconnot, Pascale. |
| Magnetic and grain size properties of a sediment core located in the western equatorial Pacific, off the southeastern tip of the Philippine island of Mindanao, are presented in an effort to reconstruct past changes in the East Asian Monsoon and deep ocean circulation during the last 160 kyrs. The sedimentary concentration of magnetic particles, interpreted to reflect past changes in runoff from Mindanao, varies almost in antiphase with Northern Hemisphere insolation. This suggests that precipitation was lower in the western equatorial Pacific region during boreal insolation maxima and thus corroborates model results showing opposing trends in precipitation between land and the marine realm there. Variations in the grain size distribution of the inorganic... |
| Tipo: Text |
Palavras-chave: North atlantic; Grain size; Water; Core; Mindanao; Paleoceanography; Susceptibility; Anisotropy; Remanence; Iceland. |
| Ano: 2010 |
URL: https://archimer.ifremer.fr/doc/00207/31854/30262.pdf |
| |
|
|
| Pechenik, Jan; Blanchard, Michel; Rotjan, Randi. |
| The slipper shell snail Crepidula fornicata forms dense assemblages along much of the European coast, where it co-occurs with oysters. We examined the susceptibility of slipper shell larvae to predation by suspension-feeders, including adults of their own species. In particular, we compared filtration rates on phytoplankton with those on larvae, and determined the extent to which consumption of larvae varied with adult size, larval size, and with the presence of alternative food (phytoplankton). We also examined the ability of competent larvae to metamorphose successfully in the presence of feeding adults. For each experiment, adults were held in plastic jars with seawater or phytoplankton suspension and allowed to graze on larvae (101 larvae per jar) for... |
| Tipo: Text |
Palavras-chave: Larvae; Susceptibility; Predation. |
| Ano: 2004 |
URL: https://archimer.ifremer.fr/doc/2004/publication-755.pdf |
| |
|
| |
|
| |
|
|
| Fornazari,F; Guimarães,FF; Teixeira,CR; Langoni,H. |
| The orange-spined hairy dwarf porcupine (Sphiggurus villosus) is a rodent species common in most parts of South America, and little is known about the pathologies that can afflict it. A specimen was delivered at the Wildlife Research and Medical Center (CEMPAS), School of Veterinary Medicine and Animal Husbandry, UNESP, Botucatu, SP, Brazil. The animal showed intense apathy, with purulent secretion in the nasal cavity and fracture of the lumbar spine. Due to the unfavorable prognosis, the porcupine was euthanized and microbiological culture of nasal discharge showed Staphylococcus epidermidis. The antimicrobial resistance test revealed sensitivity to all tested antimicrobials (ampicillin, oxacillin, tetracycline, penicillin G, neomycin, cephalexin,... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Staphylococcus epidermidis; Orange-spined hairy dwarf porcupine; Sphiggurus villosus; Antimicrobials; Susceptibility. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000400016 |
| |
|
| |
|
|
| Okaiyeto, S.O; Akerejola, O.O; Umoh, J.U; Abdullahi, S.U. |
| The susceptibility of the West African dwarf goats to experimental Cowdria ruminantium infection was studied over a period of 9 weeks using 10 infected and 4 control animals. All the 10 goats reacted to intravenous inoculation of C. ruminantium infected blood. Two died hyperacutely 12 days post infection (pi) with rectal temperature of 41.0 ± 5℃ as the main clinical sign presented, 3 died 15 days pi exhibiting various clinical signs, the remaining 5 recovered from the infection after maintaining high rectal temperature (41℃ ± 0.5) for 8-9 days. The study shows that West African Dwarf goats are highly susceptible to experimental Cowdria ruminantium infection. |
|
Palavras-chave: Heartwater; Susceptibility; Ehrlichia ruminantium; West African dwarf goat. |
| Ano: 2009 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2497 |
| |
|
|
| Silva, Paulo Henrique Müller da; Paula, Rinaldo Cesar de; Miranda, Aline Cristina; Moraes, Mario Luiz Teixeira de; Furtado, Edson Luiz; Pieri, Cristiane de; Branwer, Jeremy; Lee, David. |
| The present study investigated myrtle rust and gall wasp from non-commercial eucalypt taxa with potential to hybridization. We selected 38 genotypes from 18 species of Corymbia and Eucalyptus (Symphyomyrtus) genus. Two rust inoculations were evaluated using inoculums from rose apple and eucalypt, and natural gall occurrence in a high pest infestation condition. Corymbia was more susceptible to rust than Eucalyptus genus, and it was observed severity variation due to the sources of rust inoculum. Species that belong to Exsertaria and Transversaria (Latoangulatae) sections were more susceptible to gall wasp, and Corymbia species showed no development of gall. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Melhoramento; Proteção Florestal Eucalyptus; Corymbia; Susceptibility; Puccinia psidii; Leptocybe invasa Eucalyptus; Corymbia; Suscetibilidade; Puccinia psidii; Leptocybe invasa. |
| Ano: 2015 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/746 |
| |
|
|
| Sosa-Gómez,Daniel Ricardo; Silva,Jovenil José da. |
| The objective of this work was to evaluate the soybean neotropical brown stink bug (Euschistus heros) resistance to methamidophos through laboratory bioassays. Bioassays were carried out using populations of adults and nymphs of Euschistus heros in the last instar collected in soybean crops in Paraná State. Highest frequencies of genotypes resistant to methamidophos were observed in Alvorada do Sul, Toledo and Nova Santa Rosa, PR. Populations from Bela Vista do Paraíso, Araruna, Campo Mourão, Mariluz, Cascavel, São João do Ivaí, and Mamboré were more susceptible to methamidophos. However, an increase on resistant genotypes in this locations cannot be discarded. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Chemical control; Insecticide resistance; Susceptibility. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010000700019 |
| |
|
| |
| Registros recuperados: 50 | |
|
|
|
