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| Registros recuperados: 52 | |
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| Butignol,C. A.; Pedrosa-Macedo,J. H.. |
| Biology of the leaf gall inducer Neotrioza tavaresi Crawford, 1925 (Hemiptera, Psyllidae) on strawberry guava tree (Psidium cattleianum). A field study was conducted in Curitiba region, State of Paraná, southern Brazil, to describe the life cycle of Neotrioza tavaresi Crawford, 1925, a leaf galling insect in strawberry guava trees (Psidium cattleianum). Three cycles were observed (1997, 1998, 1999) during regular field trips and the insects were observed in Piraquara municipality, where 15 samples with 50 infested leaves were sampled in the 1997-98 cycle. Galls were dissected for detailed studies. Neotrioza tavaresi has a univoltine cycle in which adult individuals were found inside the galls from August onwards. The sexually mature insects with sex ratio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insect/plant relationship; Life cycle; Natural enemies; Psyllidae. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262003000100001 |
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| Rojas Rojas, Patricia. |
| El psílido de la papa [Bactericera cockerelli (Sulc)] es una de las plagas más importantes de las solanáceas, causa daños no sólo por la alimentación sino además por el papel como vector de enfermedades en papa y tomate, lo cual ocasiona pérdidas millonarias en Estados Unidos de América, México y Centroamérica. Debido a esto el uso de plaguicidas contra este insecto se ha incrementado, y con ello los posibles problemas de resistencia a insecticidas, brotes de plagas secundarias y daños al ambiente; entonces es necesario implementar un programa de manejo integrado de esta plaga, donde el control biológico se convierta en una de las herramientas principales, para ello es necesario incrementar el conocimiento de la biología de los enemigos naturales de este... |
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Palavras-chave: Psílido de la papa; Enemigos naturales; Control biológico; Potato psyllid; Natural enemies; Biological control; Maestría; Entomología y Acarología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/263 |
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| MONNERAT,R.G.; KIRK,A.A.; BORDAT,D.. |
| The genus Diadegma have some species able to parasite Plutella xylostella (L.) (DBM). Laboratory studies were carried out on a Diadegma sp. from Reunion Island to elucidate its ability to parasite DBM larvae, and to determine the influence of the temperature on its fecundity, longevity, oviposition and the consumption of cabbage leaves by parasitized DBM larvae. Parasitism rates were close to 70% for the L2 and L3 instar, and 53% for the L4. At 15°C, there were no progeny. At 20°C and 25°C, the percentage of parasitism was near 70%. At 29°C, the percentage parasitism was similar but the number of males produced was higher. Parasitized DBM larvae consumed 35% less leaf surface than non parasitized larvae. This Diadegma sp. is a possible candidate for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Natural enemies; Cabbage; Temperature; Parasitism; Diamondback moth. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000200015 |
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| Storck,Lindolfo; Antúnez,Claudia Carolina Cabral; Guedes,Jerson Vanderlei Carús; Cargnelutti Filho,Alberto; Alvarez,Jimmy Walter Rasche. |
| ABSTRACT Estimates of diversity indices provide information on distribution, richness and abundance of species within a community. The aim of the current study was to estimate faunistic indices (richness, constancy, dominance and abundance) of the species collected by beat cloth and entomological net sampling methods in different soybean crops and to determine the sample size necessary to estimate faunistic indices. Fauna density from 100 soybeans crops located in nine municipalities in Rio Grande do Sul, Brazil, were evaluated. Thirty points, 20 meters apart from one another, were marked in the crops. At each point, insect pests and natural enemies were collected using the two sampling methods. Faunistic indices, including the average and interval... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Resampling; Sample size; Natural enemies; Sampling methods. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000600559 |
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| Rinaldi,Isabela Maria Piovesan; Mendes,Beatriz do Prado; Cady,Alan Bruce. |
| The spider fauna (Araneae) of a sugar eane plantation was surveyed monthly by hand colteetion and beating vegetation in sugar cane fields across Botucatu, State of São Paulo, Brazil. Composition and rchness (family and species where identifieation to species was possible) microhabitat preferenees were reeorded, and diversity and evenness indices were calculated. A total of 1291 spiders belonging to 73 species and 20 families were collected. The most diverse families were Theridiidae, Salticidae, and Araneidae, and the most abundant ones were Theridiidae, Saltieidae, Anyphaenidae, and Araneidae, Seven species represented 58.6% of the total fauna, with Crysso pulcherrima (Mello-Leitão,1917) (Theridiidae) composing 28.2%. About 65% of the spiders occupied the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Araneae; Sugar cane plantation; Spider fauna; Spider diversity; Natural enemies. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752002000500021 |
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| SCHOENINGER,Karine; SOUZA,Jorge L.P.; KRUG,Cristiane; OLIVEIRA,Marcio L.. |
| ABSTRACT We surveyed parasitoid wasps (Hymenoptera) in two guarana plantations in the central Brazilian Amazon (one conventionally, and one organically managed), as well as in adjacent forest and edge areas between crop and forest. We evaluated differences between management systems in parasitoid diversity and abundance, and assessed the importance of the surrounding matrix as a source of parasitoid wasps for guarana cultivation. Parasitoid wasp richness, abundance and taxonomic composition (at family level) were compared between plantations, and among habitats within plantations. Wasps were sampled using Malaise and Moericke traps. A total of 25,951 parasitoid wasps (10,828 in the conventional, and 15,123 in the organic crop area) were collected, and were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroecosystem; Chalcidoidea; Crop management; Encyrtidae; Natural enemies. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672019000400283 |
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| Leite,Germano Leão Demolin; Picanço,Marcelo; Zanuncio,José Cola; Gusmão,Marcos Rafael. |
| The control of Aphis gossypii Glover (Hemiptera: Aphididae) on okra Abelmoschus esculentus (L.) (Malvaceae) consist primarily in the use of insecticides, due to the lack of information on other mortality factors. The objective of this study was to determine the effects of predators and parasitoids, height of canopy, plant age, leaf areas, organic compounds leaves, levels of leaf nitrogen and potassium, density of leaf trichomes, total rainfall and median temperature on attack intensity of A. gossypii on two successive A. esculentus var. Santa Cruz plantations. Monthly number estimates of A. gossypii and natural enemies (visual inspection) occurred on bottom, middle and apical parts of 30 plants/plantation (one leaf/plant). Plants senescence, leaf areas and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abelmoschus esculentus; Aphid; Natural enemies; Leaf area; Nitrogen. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000200011 |
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| Leite,Germano Leão Demolin; Picanço,Marcelo; Zanuncio,José Cola; Ecole,Carvalho Carlos. |
| The objective of this study was to evaluate effects of total rainfall, mean temperature, natural enemies, chemical composition of leaves, levels of nitrogen and potassium on leaves and density of leaf trichomes on attack intensity of Thrips palmi Karny (Thysanoptera: Thripidae) and Aphis gossypii (Glover) (Homoptera: Aphididae) on plantations of the eggplant (Solanum melongena) in two regions of Minas Gerais, Brazil. Higher numbers of A. gossypii/leaf and T. palmi/leaf were observed in plantations of this eggplant in the Municipalities of Viçosa and Guidoval, respectively. Guidoval had a rainy and hotter weather than Viçosa. T. palmi was almost positivelly correlated with rainfall (r= 0.49, P= 0.0538) while A. gossypii seemed to be more affected by mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aphis gossypii; Natural enemies; Plant nutrition; Solanum melongena; Thrips palmi. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000400002 |
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| Maia,Valéria Cid. |
| Abstract Many gall-inducing insects have been reported as pests in the Old World and North America, although few such examples are known from South America. A list of gall-inducing insects of potential economic importance, with a focus on those of restinga environments, was compiled using Maia (2013a) as starting point and updated with the database “Thompson ISI”, using ‘Insect (title) and gall (topic)’ as keywords. Botanical names were updated using the site “Flora do Brasil, 2020”, while potential economic significance of host plant species was acquired from Santos et al. (2009) and the site “Useful Tropical Plants”. Fifty-eight galling species were associated with 29 economically important plant species of 18 families in Brazilian restingas. The gallers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cecidomyiidae; Diptera; Hemiptera; Natural enemies; Geographic distribution. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100248 |
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| Registros recuperados: 52 | |
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