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Registros recuperados: 59
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A preliminary investigation of pre-dispersal seed predation by Acanthoscelides schrankiae Horn (Coleoptera: Bruchidae) in Mimosa bimucronata (DC.) Kuntze Trees Neotropical Entomology
Silva,Laura A.; Maimoni-Rodella,Rita C.S.; Rossi,Marcelo N..
This is the first record of Acanthoscelides schrankiae Horn. feeding in seeds of Mimosa bimucronata (DC.) Kuntze. We investigated the pattern of oviposition and seed exploitation by A. schrankiae, and the distribution of mature fruits and seed predation in the inflorescences. We also compared the percentage of predated seeds, the total dry weight of fruits and non-predated seeds, the percentage of aborted seeds, and the percentage of non-emergent insects, among different quadrants of the M. bimucronata canopy. To determine the occurring species, the emergence of bruchids and parasitoids was observed in the laboratory, resulting altogether, only in individuals of A. schrankiae and Horismenus sp. (Hymenoptera: Eulophidae) species, respectively. Mean number...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fabaceae; Mimosoideae; Herbivory; Insect-plant interaction.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2007000200005
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Activities and Novel Applications of Secondary Metabolite Coumarins Planta Daninha
HUSSAIN,M.I.; QAMAR ABBAS,S.; REIGOSA,M.J..
ABSTRACT: This review covers biological activity of secondary metabolites, coumarin and their derivatives on different organisms (pests, pathogens, weeds), as well as their applications in agriculture as eco-friendly pesticides and weed control agents. Naturally occurring coumarins have shown biological and allelopathic potential on a broad range of organisms. Coumarin inhibits seed germination, root growth, morphology, histology, water uptake, respiration, photosynthesis, cell elongation, cell división and differentiation. Coumarin demonstrate excellent insecticidal potential against eggs, larvae and adult insects. Coumarin showed antifeedent responses in a wide range of memebers from invertebrates to vertebrates. The information provided in this review...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coumarin; Secondary metabolites; Multifunctionality; Herbivory; Allelopathy; Phytotoxicity; Weed control.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100220
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Algal food processing by Stegastes nigricans, an herbivorous damselfish: differences between an undisturbed and a disturbed coral reef site (La Reunion, Indian Ocean) ArchiMer
Lison De Loma, Thierry; Harmelin-vivien, Mireille; Naim, Odile; Fontaine, Marie France.
There has, as yet, been little study of nutrient disturbance and its consequences on the functional biology of primary consumers in coral reefs. The processing of epilithic algal communities by the damselfish Stegastes nigricans was investigated at La Reunion, at two sites of a fringing reef, oligotrophic for one and eutrophic for the other. Differences between sites were analyzed in quantifying organic matter, organic carbon, nitrogen, and organic 'nutrients' (carbohydrate, lipid and protein) in the algal food, the digestive contents and the faeces of S. nigricans. In the disturbed site, algal turfs and digestive contents presented significantly higher organic matter, organic carbon, nitrogen and organic nutrient values. Absorption efficiency of total...
Tipo: Text Palavras-chave: Régime herbivore; Stegastes; Récif corallien; Eutrophisation; La Réunion; Herbivory; Stegastes; Coral reef; Eutrophication; La Reunion.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00323/43376/42835.pdf
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An experimental test of rainfall as a control agent of Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) on seedlings of Eucalyptus camaldulensis Dehn (Myrtaceae) Rev. Bras. entomol.
Oliveira,Karla N.; Jesus,Fabiene M. de; Silva,Jhonathan O.; Espírito-Santo,Mário M. do; Faria,Maurício L..
An experimental test of rainfall as a control agent of Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) on seedlings of Eucalyptus camaldulensis Dehn (Myrtaceae). Glycaspis brimblecombei is one the greatest threats to eucalyptus plantations in Brazil. The effects of rainfall to reduce the abundance of lerp of Glycaspis brimblecombei on experimentally infested seedlings of Eucalyptus camaldulensis were assessed. The number of lerps on the adaxial and abaxial surfaces of every leaf of 60 seedlings was recorded, before and after submission to the following treatments: "artificial rain", "leaf wetting" and control. A drastic reduction in lerp abundance per plant was observed after the treatments "leaf wetting" and artificial rain (F = 53.630; p <...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbivory; Pest management; Red gum lerp psyllid.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262012000100016
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Are gall midge species (Diptera, Cecidomyiidae) host-plant specialists? Rev. Bras. entomol.
Carneiro,Marco Antonio A.; Branco,Cristina S. A.; Braga,Carlos E. D.; Almada,Emmanuel D.; Costa,Marina B. M.; Maia,Valéria C.; Fernandes,Geraldo Wilson.
Despite the speciose fauna of gall-inducing insects in the Neotropical region, little is known about their taxonomy. On the other hand, gall morphotypes associated with host species have been extensively used as a surrogate of the inducer species worldwide. This study reviewed the described gall midges and their galls to test the generalization on the use of gall morphotypes as surrogates of gall midge species in the Brazilian fauna. We compiled taxonomic and biological data for 196 gall midge species recorded on 128 host plant species. Ninety two percent of those species were monophagous, inducing galls on a single host plant species, whereas only 5.6% species were oligophagous, inducing galls on more than one congeneric host plant species. Only four...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Cecidomyiids; Herbivory; Insect galls; Species richness.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000300010
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Association of the borer Spermophthorus apuleiae (Coleoptera; Curculionidae; Scolytinae) with the "pau-ferro" tree Caesalpinia ferrea (Leguminosae) Biota Neotropica
Suesdek,Lincoln; Lima,Flávio Cesar Thadeo.
The weevil subfamily Scolytinae includes beetles which may feed on the bark, trunk or roots of both live and dead trees and are sometimes considered forest and silvicultural pests. Less frequently, some species feed on seeds and may be cause economic losses when associated to plant cultivars. Spermophthorus apuleiae Costa-Lima is a Neotropical Scolytinae formerly recorded to be "associated" with seeds of Caesalpinia ferrea var. leiostachya Benth, a Brazilian tree popularly known in Portuguese as "pau-ferro". Hitherto, it was not clear whether these beetles actually feed on the seeds of that plant. In order to investigate the ability of S. apuleiae to feed on seeds of "pau-ferro", observations were done and colonies of these beetles were established. Both...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beetle; Herbivory; Seed; Neotropical region.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032011000200001
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Building of Leaf Shelters by Stenoma scitiorella Walker (Lepidoptera: Elachistidae): Manipulation of Host Plant Quality? Neotropical Entomology
COSTA,ALEXANDRE A.; VARANDA,ELENICE M..
Building of leaf shelters is a widespread behavior among microlepidopteran larvae. Apparently, these shelters provide refuge to caterpillars against bad weather and reduce the risks of predation and parasitism. Recent studies about nutritional ecology of insects have suggested that such behavior would actually be an strategy evolutionarily selected to maximize the quality of the host plant consumed by them. Stenoma scitiorella Walker caterpillars tie together young Xylopia aromatica (Lam.) Mart. (Annonaceae) leaves to build a shelter in which they retreat, feeding exclusively on inner leaves. The accumulation of damage and excrement in leaf shelters with several caterpillars may lead to a decline in larval development and survivorship. For providing the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Herbivory; Caterpillar; Tannin; Xylopia aromatica.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000400005
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Diet and feeding behavior of Kyphosus spp. (Kyphosidae) in a Brazilian subtropical reef BABT
Silvano,Renato Azevedo Matias; Güth,Arthur Ziggiatti.
The present study analyzed and compared diet and feeding behavior (substrate use, position in water column, interactions with other fishes) of Kyphosus spp. (sea chubs) in a Brazilian subtropical reef. Juveniles (< 160 mm) of Kyphosus incisor consumed both algae and invertebrates, which were mainly calanoid copepods. Juvenile and small adults of also observed foraging in the water column. We thus provide the first record of omnivory for Kyphosids in the southwest Atlantic Ocean.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbivory; Kyphosidae; Omnivory; Ontogenetic diet shift; Coastal fishes.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000500012
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Distribution and frequency of galls induced by Anisodiplosis waltheriae Maia (Diptera: Cecidomyiidae) on the invasive plant Waltheria indica L. (Sterculiaceae) Neotropical Entomology
Almeida,Felipe V.M.; Santos,Jean C.; Silveira,Fernando A.O.; Fernandes,Geraldo W..
The frequency of galls induced by Anisodiplosis waltheriae Maia, a recently described species, on Waltheria indica L. was studied. W. indica is an invasive weed in regeneration areas of Atlantic Forest in southeastern Brazil. Plants were collected in May 2004 and above-ground biomass, main stem length, number of leaves, number of galls per leaf and leaf area of each individual were recorded. Nearly 90% of all plants and 25% of all leaves were attacked by the gall midge, with an average of 0.67 galls/leaf. Leaf area had a weak effect on gall abundance while the number of leaves had no effect on gall abundance. Only 31% of the variation in gall abundance was explained by plant biomass. Natural enemies killed one third of the sampled galls. Predation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aimorés; Atlantic Forest; Insect gall; Herbivory; Mortality factor; Biological invasion.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000400002
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Distribution pattern of herbivorous insects in a remnant of Brazilian Atlantic Forest Neotropical Entomology
Barbosa,Veralucia S.; Leal,Inara R.; Iannuzzi,Luciana; Almeida-Cortez,Jarcilene.
In this study we selected three habitats that correspond to a light gradient, and consequently a proportion of pioneer plant species gradient edges, trails and forest core and described their herbivorous insect assemblage. We tested five hypothesis about the herbivorous assemblage: (1) there is a different distribution of abundance and richness of order between habitats, (2) species similarity between habitats is smaller than within habitat, (3) in forest edge the herbivores are more abundant than in trails and interior of the forest, (4) in nuclear areas herbivore richness and diversity are higher than in the trails and edge, and (5) the abundance and richness of herbivores are different between seasons. Herbivorous were sampled during November 2000 - May...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fragmentation; Herbivorous insect assemblage; Herbivory; Insect diversity; Plant defense; Plant-insect interaction.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000500001
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Does mechanical damage on soybean induces the production of flavonoids? Anais da ABC (AABC)
SILVA,PAULO LUIZ DA; CORDEIRO,GLÁUCIA; SILVA,CAROLINA R. DA; BARROS,RAFAEL A.; SILVA,CAMILA R. DA; ZANUNCIO,JOSÉ C.; CAMPOS,WELLINGTON G.; OLIVEIRA,MARIA G.A..
Abstract The response of plants to grazing includes the production of chemical defense compounds such as proteases inhibitors and secondary metabolites as flavonoids, which makes them less palatable to feeding and negatively affecting the physiology of insects. The aim of this study was to evaluate the phytochemical response of soybean cultivars (Glycine max (L.) Merrill) resistant (IAC-17, IAC-24) and susceptible (IAC-P1) to insects after mechanical damage. These cultivars were mechanically injured, and after 24 hours samples of these plants were analyzed by HPLC to identify and quantify flavonoids. The flavonoids daidzein, quercetin, and rutin were quantified, with the highest concentration of daidzin in soybean cultivars after mechanical damage. Rutin...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Flavonoid; Herbivory; Mechanical damage; Secondary metabolite.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703415
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DROUGHT LIMITS INDUCED TWINING BY LEAF DAMAGE IN THE CLIMBING PLANT IPOMOEA PURPUREA (L.) ROTH (CONVOLVULACEAE) Gayana Botánica
Atala,Cristian; Gianoli,Ernesto.
The environment may limit the expression of induced responses to herbivory, such as increased chemical or physical defenses. Recent studies in climbing plants have shown that leaf damage induces twining. This response may confer protection against ground herbivores in the field. We addressed the effect of drought on the induced twining of the annual vine Ipomoea purpurea (Convolvulaceae), which can experience drought stress in natural conditions. In a greenhouse experiment, we recorded twining rate (proportion of plants successfully climbing at a given time) of damaged and undamaged individuals of I. purpurea subjected to control watering and water shortage treatments. We also estimated stem growth rate and stem water content in experimental plants, just...
Tipo: Journal article Palavras-chave: Induced responses; Drought; Ipomoea purpurea; Resource limitation; Herbivory.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432009000200005
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Ecological strategies of Al-accumulating and non-accumulating functional groups from the cerrado sensu stricto Anais da ABC (AABC)
Souza,Marcelo C. de; Bueno,Paula C.P.; Morellato,Leonor P.C.; Habermann,Gustavo.
The cerrado's flora comprises aluminum-(Al) accumulating and non-accumulating plants, which coexist on acidic and Al-rich soils with low fertility. Despite their existence, the ecological importance or biological strategies of these functional groups have been little explored. We evaluated the leaf flushing patterns of both groups throughout a year; leaf concentrations of N, P, K, Ca, Mg, S, Al, total flavonoids and polyphenols; as well as the specific leaf area (SLA) on young and mature leaves within and between the groups. In Al-accumulating plants, leaf flushed throughout the year, mainly in May and September; for non-accumulating plants, leaf flushing peaked at the dry-wet seasons transition. However, these behaviors could not be associated with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aluminum; Community; Herbivory; Mineral nutrition; Phenology; Specific leaf area.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000200813
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Effect of Bt genetic engineering on indirect defense in cotton via a tritrophic interaction. Repositório Alice
MORAES, M. C. B.; LAUMANN, R. A.; AQUINO, M. F. S.; PAULA, D. P.; BORGES, M..
bitstream/item/181867/1/Moraes2011-Article-EffectOfBtGeneticEngineeringOn.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Tritrophic interaction; Biosafety analysis; Natural enemy; Herbivory; Cotton.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/872850
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Effect of the larval density of Chrysodeixis includens (LEPIDOPTERA, NOCTUIDAE) on cotton yield. Repositório Alice
RODRIGUES, S. M. M.; PITTA, R. M.; SANTOS, N. C..
The cultivation of soybean near to cotton areas has favored the migration of lepidopteran pests between those crops, including the soybean looper, Chrysodeixis includens, which usually attacks soybean leaves but can also attack cotton plants. The objective of this study is to identify the density of C. includens larvae capable of decreasing cotton productivity. Six treatments (0, 2, 4, 6, 8 and 16 larvae.meter-1) with five replications were arranged in a completely randomized block design. Plants of cultivar FM 944GL at stage F2 were protected by PVC cages (length, 1.0 m; width, 1.0 m, height, 1.6 m) covered with organza fabric and infested with third-instar larvae. Crop yield and defoliation data were subjected to analysis of variance using the F-test and...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Herbivory; Management; Falsa-medideira; Herbivoria; Soybean looper; Gossypium Hirsutum; Manejo; Herbivores; Pseudoplusia includens virus.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1118778
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Elevated Levels of Herbivory in Urban Landscapes: Are Declines in Tree Health More Than an Edge Effect? Ecology and Society
Christie, Fiona J; University of Sydney; christie@bio.usyd.edu.au; Hochuli, Dieter F; University of Sydney; dieter@bio.usyd.edu.au.
Urbanization is one of the most extreme and rapidly growing anthropogenic pressures on the natural world. Urban development has led to substantial fragmentation of areas of natural habitat, resulting in significant impacts on biodiversity and disruptions to ecological processes. We investigated the levels of leaf damage caused by invertebrates in a dominant canopy species in urban remnants in a highly fragmented urban landscape in Sydney, Australia, by assessing the frequency and extent of chewing and surface damage of leaves in urban remnants compared to the edges and interiors of continuous areas of vegetation. Although no difference was detected in the frequency of leaves showing signs of damage at small, edge, and interior sites, small sites suffered...
Tipo: Peer-Reviewed Reports Palavras-chave: Urban landscapes; Herbivory; Invertebrates; Urbanization; Remnant vegetation; Fragmentation; Leaf damage; Australia.
Ano: 2005
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Feeding habits of capybaras (Hydrochoerus hydrochaeris, Linnaeus 1766), in the Ecological Reserve of Taim (ESEC - Taim) - south of Brazil BABT
Borges,Lucélia do Valle; Colares,Ioni Gonçalves.
The aim of this study was to determine feeding habitats of capybaras in the ESEC-Taim (RS, Brazil), using microhistological analyses of feces. Data were analyzed seasonally. In 172 samples analyzed, 17 species were identified, with predominance of Poaceae. Zizaniopsis bonariensis was the most frequent species in winter (38%), spring (32%) and summer (26.5%) and Paspalum disthichum in fall (31.5%). A observed increase in vegetation consumption during summer might be due to the food quality. Capybaras showed an opportunistic behavior in the winter and summer and a more selective behavior in spring and fall. Capybaras from the ESEC-Taim varied diet according to the season and alimentary availability.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capybara; Rodent; Herbivory; Diet; Poaceae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300007
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Feeding preferences of the willow sawfl y Nematus oligospilus (Hymenoptera: Tenthredinidae) for commercial Salix clones Rev. Soc. Entomol. Argent.
Loetti,Verónica; Rubio,Alejandra; Bellocq,María Isabel.
Nematus oligospilus Förster (Hymenoptera: Tenthredinidae) is a willow sawfly native to the Northern Hemisphere which became a serious defoliator in willow plantations (Salix spp.) of the Southern Hemisphere after being introduced in the early 1980´s. Studies on host preferences provide useful information for the development of pest management strategies where the willow sawfly may produce tree damage and economic loss. Feeding preferences of N. oligospilus larvae were evaluated in laboratory trials by simultaneously offering leaves from four willow tree clones commonly used in commercial plantations in Argentina (Salix babylonica var sacramenta Hortus, Salix nigra Marsch., S. babylonica L. x Salix alba L. 131-27 and Salix matsudana Koidz. x S. alba L....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Defoliation; Herbivory; Salicaceae; Willow sawfly.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802012000100014
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Field diet of the grasshopper Abracris dilecta Walker (Orthoptera, Acrididae) Zoologia
Sperber,Carlos Frankl.
Abracris dilecta Walker, 1870 (Orthoptera, Acrididae, Ommatolampinae) ate leafs of at least 14 plant species, in the families Asteraceae, Lamiaceae, Malvales (Sterculiaceae, Tiliaceae or Malvaceae), Poaceae, Fabaceae, Verbenaceae, Aristolochiaceae, Rubiaceae and Melastomataccae. Elephantopus mollis H.B.K. (Asteraceae) and Hyptis suaveolens Poit. (Lamiaceae) comprised 50% of the diet. The diet breadth of A. dilecta was compared to that of other 11 grasshopper species of the same sub-family, with rarefaction curves. The number of plant species eaten by A. dilecta was greater than that of nine other grasshopper species of the same sub-family (Rhachicreagra spp.) but was lower then two others (Microptylopteryx hebardi Rehn, 1905 and Rhachicreagra astytophallus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Herbivory; Diet breadth; Tropical dry forest edge; Neotropical region; Brazil.
Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000100012
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Field evaluation of Bt cotton crop impact on nontarget pests: cotton aphid and boll weevil. Repositório Alice
SUJII, E. R.; TOGNI, P. H. B.; RIBEIRO, P. de A.; BERNARDES, T. de A.; MILANE, P. V. G. N.; PAULA, D. P.; PIRES, C. S. S..
bitstream/item/156260/1/art3A10.10072Fs13744-012-0094-0.pdf
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cry toxin; Herbivory; Nontarget organism; Sustainable pest management; Biosafety.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/963907
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