oalib
Search Results: 1 - 10 of 84 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /84
Display every page Item
Mortalidad y repelencia en Eupalamides cyparissias (Lepidoptera: Castniidae), plaga de la palma aceitera Elaeis guineensis, por efecto de diez extractos botánicos Mortality and repellence of Eupalamides cyparissias (Lepidoptera: Castniidae), pest of oil palm Elaeis guineensis, by effect of ten botanical extracts  [cached]
Diana D. Pérez,José Iannacone O.
Revista de la Sociedad Entomol?3gica Argentina , 2008,
Abstract: Las plantas con actividad insecticida constituyen un importante componente del manejo integrado de plagas. Bajo esta premisa, el objetivo del presente estudio fue evaluar la mortalidad y repelencia larval de Eupalamides cyparissias Fab. (Lepidoptera: Castniidae), plaga de la palma aceitera Elaeis guineensis Jacquin; empleando diez plantas con potencial insecticida: Ucullucuysacha (Heliotropium indicum L., Boraginaceae), Floripondio (Brugmansia x candida Pers., Solanaceae), Oreja de Tigre (Tradescantia zebrina Hort ex Bosse, Commelinaceae), Pi ón Blanco (Jathropa curcas L., Euphorbiaceae), Sacha yoco (Paullinia clavigera Schltdl., Sapindaceae), Yuquilla (Euphorbia cotinifolia L., Euphorbiaceae), Achiote (Bixa orellana L., Bixaceae), Retama común (Cassia fistula L., Fabaceae), Huancahuisacha (Aristolochia pilosa Kunth, Aristolochiaceae) y Curare (Chondrodendron tomentosum Ruiz & Pavon, Menispermaceae). Los bioensayos con E. cyparissias abarcaron entre 1 h y 24 h, bajo condiciones estandardizadas de laboratorio. A 24 h de exposición, los mayores porcentajes de mortalidad de E. cyparissias se presentaron en los tratamientos con Sacha yoco (63,3 %: corteza y hojas en decocción), Achiote (63,3 %: semillas en licuado) y Yuquilla (48,3 %: hojas en licuado). En el caso de la repelencia, los mayores efectos se encontraron en los tratamientos con Achiote (83,30 %), Sacha yoco (75 %) y Floripondio (66,7 %: hojas en licuado). The plants with insecticide activities constitute a main compound of integrated pest management. Under this premise, the aim of the current research was to evaluate mortality and repellence of Eupalamides cyparissias Fab. (Lepidoptera: Castniidae) larvae, pest of oil palm Elaeis guineensis Jacquin, employing ten plants with insecticide potential: Indian heliotrope (Heliotropium indicum L., Boraginaceae), Angel′s trumpets (Brugmansia x candida Pers., Solanaceae), Wandering Jew (Tradescantia zebrina Hort ex Bosse, Commelinaceae), Nettles-purge (Jathropa curcas L., Euphorbiaceae), Soapberry (Paullinia clavigera Schltdl., Sapindaceae), Red spurge (Euphorbia cotinifolia L., Euphorbiaceae), Annato (Bixa orellana L., Bixaceae), Golden shower (Cassia fistula L., Fabaceae), Birthwort fruit (Aristolochia pilosa Kunth, Aristolochiaceae) and Pareira (Chondrodendron tomentosum Ruiz & Pavon, Menispermaceae). Bioessays with E. cyparissias were performed at 1 h and 24 h under standardized laboratory conditions. At 24 h exposure, the highest percentage of mortality of E. cyparissias was observed with Soapberry (63.3 %: bark and leaves in decoction), Annato (63.
Efectividad de Extractos Botánicos de Diez Plantas Sobre la Mortalidad y Repelencia de Larvas de Rhynchophorus palmarum L., Insecto Plaga del Pijuayo Bactris gasipaes Kunth en la Amazonía del Perú Effectiveness of Botanical Extracts from Ten Plants on Mortality and Larval Repellency of Rhynchophorus palmarum L., an Insect Pest of the Peach Palm Bactris gasipaes Kunth in Amazonian Peru
Diana Perez D,José Iannacone O
Agricultura Técnica , 2006,
Abstract: La resistencia de las plagas a los insecticidas químicos se ha incrementado en los últimos a os, motivo por el que se buscan métodos alternativos, como extractos de plantas con actividad larvicida. El objetivo del presente trabajo fue evaluar el efecto sobre la mortalidad y repelencia de larvas de Rhynchophorus palmarum L. (Curculionidae), plaga del pijuayo Bactris gasipaes Kunth, de diez plantas con potencial biocida: ucullucuysacha (Heliotropium indicum L., Boraginaceae), floripondio (Brugmansia sp., Solanaceae), oreja de tigre (Tradescantia zebrina Hort. ex Bosse, Commelinaceae), pi on blanco (Jathropa curcas L., Euphorbiaceae), sacha yoco (Paullinia clavigera Schltdl., Sapindaceae), yuquilla (Euphorbia cotinifolia L., Euphorbiaceae), achiote (Bixa orellana L., Bixaceae), retama común (Cassia fistula L., Fabaceae), huancahuisacha (Aristolochia pilosa Kunth, Aristolochiaceae) y curare (Chondrodendron tomentosum Ruiz & Pavon, Menispermaceae). Los bioensayos con R. palmarum se realizaron a 1, 4, 8, 12 y 24 h, usando 660 larvas bajo condiciones de laboratorio, empleando extractos botánicos acuosos mayormente a la proporción 1:3 (p/v). A 24 h de exposición, los mayores porcentajes de mortalidad de R. palmarum se presentaron con huancahuisacha (73,30%: hojas y tallo licuados), oreja de tigre (70%: hojas y tallo licuados) y curare (60%: madera y corteza en decocción). En el caso de la repelencia, los mayores efectos se encontraron para huancahuisacha (80%), curare (73,30%) y oreja de tigre (71,70%). En adición, pi on blanco (semillas licuadas) produjó sólo 3,3% de mortalidad y significativamente un 55% de repelencia. Se analizan las posibilidades de empleo de estos extractos botánicos en el manejo integrado de R. palmarum. Pest resistance to chemical insecticides has grown in recent years, which is the motive for the search for alternative methods, such as plants with larvicidal activity. The objective of this research was to evaluate mortality and larval repellency of Rhynchophorus palmarum L. (Curculionidae), a pest of the Peach palm Bactris gasipaes Kunth to ten plants with biocide potential: india heliotrope (Heliotropium indicum L., Boraginaceae), angels’ trumpets (Brugmansia sp., Solanaceae), wandering jew (Tradescantia zebrina Hort. ex Bosse, Commelinaceae), nettles-purge (Jathropa curcas L., Euphorbiaceae), soapberry (Paullinia clavigera Schltdl., Sapindaceae), red spurge (Euphorbia cotinifolia L., Euphorbiaceae), annato (Bixa orellana, Bixaceae), golden shower (Cassia fistula L., Fabaceae), birthwort fruit (Aristolochia pilosa Kunth, Aristolochiace
El yoco del cielo es cultivado: perspectivas sobre Paullinia yoco en el chamanismo airo-pai (secoya-tucano occidental)  [cached]
Luisa Elvira Belaunde,Juan Alvaro Echeverri
Anthropologica , 2008,
Abstract: Este artículo asocia la cosmovisón chamánica y onírica de los airo-pai (secoya) con su manejo silvicultural del yoco (Paullinia yoco), una liana silvestre rica en cafeína, endémica del refugio del pleistocénico del Napo. Según las nociones etnobotánicas airo-pai,el yoco tiene la propiedad de dar consejo a quienes lo consumen. A partir del análisis de un canto chamánico de yajé (Banisteriopsis caapi), mitos e interpretación de sue os, mostramos cómo el manejo de esta especie es concebido según perspectivas contrastantes: para los espíritus celestiales el yoco es una planta cultivada, que crece en las chagras del cielo; para cuacuiyó ( el due o del yoco), ave dispersora de su semilla, el yoco es su propio cultivo; y para los seres humanos terrestres, la recolección de yoco silvestre es parecida a la cacería (asociada oníricamente con el paujil (Nothocrax urumutum). De esta manera, este estudio ilustra la relevancia de un abordaje perspectivista para comprender los conocimientos etnobotánicos subyacentes al manejo y extracción de especies silvestres de importancia ritual y práctica. -- This article associates Airo-pai shamanistic vision and interpretation of dreams with their silvicultural management of yoco (Paullinia yoco), a wild vine rich in caffeine, endemic to the pleistocene refuge of Napo. According to Airo-pai ethnobotanic notions, yoco is a plant that gives advice to those who intake it. From the analysis of a shamanic chant of yajé (Banisteriopsis caapi), myths and interpretation of dreams, we show how the management of this species is conceived from contrasting perspectives: for celestial beings, yoco is a domesticated plant that grows in the celestial gardens; for cuacuiyó (yoco’s Master ), a seed-dispersing bird, yoco is its own plantation; and for terrestrial human beings, the collection of wild yoco is like hunting, associated in dreams with the nocturnal curassow (Nothocrax urumutum). This study thus illustrates the relevance of a perspectivist approach to understand the ethnobotanic lore underlying the management and extraction of a wild species of ritual and practical importance.
Mortalidad y repelencia en Eupalamides cyparissias (Lepidoptera: Castniidae), plaga de la palma aceitera Elaeis guineensis, por efecto de diez extractos botánicos
Pérez,Diana D.; Iannacone O.,José;
Revista de la Sociedad Entomol?3gica Argentina , 2008,
Abstract: the plants with insecticide activities constitute a main compound of integrated pest management. under this premise, the aim of the current research was to evaluate mortality and repellence of eupalamides cyparissias fab. (lepidoptera: castniidae) larvae, pest of oil palm elaeis guineensis jacquin, employing ten plants with insecticide potential: indian heliotrope (heliotropium indicum l., boraginaceae), angel′s trumpets (brugmansia x candida pers., solanaceae), wandering jew (tradescantia zebrina hort ex bosse, commelinaceae), nettles-purge (jathropa curcas l., euphorbiaceae), soapberry (paullinia clavigera schltdl., sapindaceae), red spurge (euphorbia cotinifolia l., euphorbiaceae), annato (bixa orellana l., bixaceae), golden shower (cassia fistula l., fabaceae), birthwort fruit (aristolochia pilosa kunth, aristolochiaceae) and pareira (chondrodendron tomentosum ruiz & pavon, menispermaceae). bioessays with e. cyparissias were performed at 1 h and 24 h under standardized laboratory conditions. at 24 h exposure, the highest percentage of mortality of e. cyparissias was observed with soapberry (63.3 %: bark and leaves in decoction), annato (63.3 %: liquefied seeds) and red spurge (48.3 %: liquefied leaves). in the case of repellence, the highest effects were found in annato (83.3 %), soapberry (75 %) and angels′ trumpets (66.7 %: liquefied leaves).
Herbertia Zebrina (Iridaceae, Tigridieae, Cipurinae) a new species from Rio Grande do Sul State (Brazil)
Paz Deble,Leonardo;
Darwiniana , 2010,
Abstract: herbertia zebrina, a new species from serra do sudeste, rio grande do sul state (brazil) is described and illustrated, and its taxonomic affinities are discussed. comments about geographic distribution, conservation and a key to the brazilian species of herbertia are also provided.
HERBERTIA ZEBRINA (IRIDACEAE, TIGRIDIEAE, CIPURINAE) A NEW SPECIES FROM RIO GRANDE DO SUL STATE (BRAZIL)  [cached]
Leonardo Paz Deble
Darwiniana , 2010,
Abstract: Se describe e ilustra Herbertia zebrina, una nueva especie para Serra do Sudeste, Rio Grande do Sul (Brasil), y se discuten sus relaciones taxonómicas. Se incluyen comentarios sobre su distribución geográfica y conservación, y se provee una clave para identificar las especies brasile as de Herbertia.
Efectividad de Extractos Botánicos de Diez Plantas Sobre la Mortalidad y Repelencia de Larvas de Rhynchophorus palmarum L., Insecto Plaga del Pijuayo Bactris gasipaes Kunth en la Amazonía del Perú
Perez D,Diana; Iannacone O,José;
Agricultura Técnica , 2006, DOI: 10.4067/S0365-28072006000100003
Abstract: pest resistance to chemical insecticides has grown in recent years, which is the motive for the search for alternative methods, such as plants with larvicidal activity. the objective of this research was to evaluate mortality and larval repellency of rhynchophorus palmarum l. (curculionidae), a pest of the peach palm bactris gasipaes kunth to ten plants with biocide potential: india heliotrope (heliotropium indicum l., boraginaceae), angels? trumpets (brugmansia sp., solanaceae), wandering jew (tradescantia zebrina hort. ex bosse, commelinaceae), nettles-purge (jathropa curcas l., euphorbiaceae), soapberry (paullinia clavigera schltdl., sapindaceae), red spurge (euphorbia cotinifolia l., euphorbiaceae), annato (bixa orellana, bixaceae), golden shower (cassia fistula l., fabaceae), birthwort fruit (aristolochia pilosa kunth, aristolochiaceae) and pareira (chondrodendron tomentosum ruiz & pavon, menispermaceae). bioassays with r. palmarum were performed at 1, 4, 8, 12 and 24 h exposure, employing 660 larvae under laboratory conditions and aqueous botanical extracts of the plants at a 1:3 (w/v) ratio. at 24 h exposure, the highest mortality percentage of r. palmarum was observed with birthwort fruit (73.30%: liquefied leaves and stems), wandering jew (70%: liquefied leaves and stems) and pareira (60%: wood and bark in decoction). in the case of repellency, the highest effects were found in birthwort fruit (80%), pareira (73.30%) and wandering jew (71.70%). in addition, nettles-purge (liquefied seeds) produced only 3.3% mortality but significantly 55% repellency. the possibility of employing these botanical extracts in integrated management of r. palmarum is analyzed.
Oil Road Effects on the Anuran Community of a High Canopy Tank Bromeliad (Aechmea zebrina) in the Upper Amazon Basin, Ecuador  [PDF]
Shawn F. McCracken, Michael R. J. Forstner
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0085470
Abstract: Tropical forest canopies are among the most species-rich terrestrial habitats on earth and one of the remaining relatively unexplored biotic frontiers. Epiphytic bromeliads provide microhabitat for a high diversity of organisms in tropical forest canopies and are considered a keystone resource. A number of amphibians inhabit these phytotelmata, yet their ecological role and status in forest canopies remains unknown. For this study, anurans were collected from an upper canopy tank bromeliad (Aechmea zebrina) at ~20–45 m (xˉ = 33 m) above the forest floor. Bromeliads were sampled from trees located near trails in undisturbed primary rainforest and oil access roads in the Yasuní Biosphere Reserve of Amazonian Ecuador. We collected 95 anurans representing 10 species from 160 bromeliads in 32 trees. We used generalized linear mixed models to assess the effects of disturbance and habitat factors on the occupancy and abundance of anurans collected. Bromeliads in forest along oil roads had a lower occupancy and abundance of anurans than those in undisturbed forest, a somewhat unexpected result due to the intactness and quality of forest adjacent to the roads. Recorded habitat variables had no relationship with occupancy or abundance of anurans, and did not differ significantly between treatments. Our findings reveal that even the minimal footprint of natural resource extraction operations, primarily roads, in rainforest environments can have significant negative impacts on the unique upper canopy anuran community. Based on these results, we recommend that natural resource development treat rainforest habitat as an offshore system where roads are not used, employ industry best practice guidelines, and current access roads be protected from colonization and further deforestation.
Changes in the proteomes of the hemocytes and fat bodies of the flesh fly Sarcophaga bullata larvae after infection by Escherichia coli
Alice Masova, Miloslav Sanda, Jiri Jiracek, Irena Selicharova
Proteome Science , 2010, DOI: 10.1186/1477-5956-8-1
Abstract: We analyzed the proteomes of the hemocytes and fat bodies of Sarcophaga bullata larvae after infection by Escherichia coli. The 2-DE gels of the hemocytes and fat bodies of infected larvae were compared with those of aseptically injured larvae. Our analysis included the construction of protein maps of the hemocyte cells and cells from fat bodies, the identification of the changed proteins, in response to infection, using LC-MS/MS, and the estimation of the trends in expression of these proteins at three time points (30 min, 6 hours and 22 hours) after infection. In total, seven changed spots were found in the hemocytes, and four changed spots were found in the fat bodies. Three types of trends in protein expression were observed. Cofilin and transgelin were undetectable at 30 min after infection but were continuously up-regulated in the induced larvae after 22 hours. A prophenoloxidase isoform and lectin subunit α were slightly up-regulated at 30 min after infection, and their protein levels reached the highest points after 6 hours but decreased after 22 hours. T-Complex subunit α, GST, ferritin-like protein and an anterior fat body protein (regucalcin homologue) were down-regulated at 22 hours after infection.Many proteins identified in our study corresponded to the proteins identified in other insects. Compared to the former studies performed in insects, we presented 2-D protein maps of the hemocytes and fat bodies and showed the trends in expression of the immune-elicited proteins.Insects are a major group of arthropods and the most diverse group of animals on Earth. One of the reasons that insects prosper on Earth is their efficient self-defense system, which is based on innate immunity [1]. Innate immunity involves both cellular and humoral reactions, including phagocytosis, the activation of proteolytic cascades and the synthesis of potent antimicrobial peptides [2]. Many parallels between human and insect innate immunity have been disclosed, and simultaneousl
Development of Melittobia australica Girault and M. digitata Dahms (Parker) (Hymenoptera: Eulophidae) parasitizing Neobellieria bullata (Parker) (Diptera: Sarcophagidae) puparia
Silva-Torres, Christian S.A.;Matthews, Robert W.;
Neotropical Entomology , 2003, DOI: 10.1590/S1519-566X2003000400015
Abstract: the development of melittobia australica girault and m. digitata dahms were studied parasitizing blow fly puparia neobellieria (=sarcophaga) bullata (parker) using from one to five foundress females per host. aspects of parasitoids biology such as number of descendents produced, longevity, and progeny body size can be affected as the number of foundress increases per host. the percentage of puparia parasitized was higher overall for m. digitata than for m. australica. regardless of foundress numbers, the average total number of descendents produced was significantly higher for m. digitata (66.5 158.0) than for m. australica (10.9 55.5). the number of descendents produced per female was inversely proportional to the number of foundresses on a host for both species. developmental time increased for m. australica and decreased for m. digitata, as the number of foundresses increased. life spans of adult progeny of both species, deprived of host and food, were longer for progeny derived from fewer foundresses. body size as measured by forewing and hind-tibia lengths of descendents showed significant reduction as number of foundresses increased for both species, except for the forewing of m. digitata. changing foundress number did not affect offspring sex ratios (0.95 0.98 for m. australica, and 0.95 0.97 for m. digitata). these results indicated that m. digitata achieved better performance parasitizing n. bullata compared to m. australica, and both parasitoid species had their performance affected by increasing the parasitoid densities per host, suggesting that progeny competition occurred.
Page 1 /84
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.