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| Registros recuperados: 28 | |
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| Santos,Jean C.; Viana,Leonardo R.; Silveira,Fernando A. O.; Penteado-Dias,Angélica M.; Fernandes,G. Wilson. |
| The oviposition behaviour of the braconid parasitoid, Compsobracon mirabilis ( Szépligeti, 1901) is described. Observations were conducted in a cerrado region located in Três Marias, Minas Gerais, Brazil. The oviposition occurred in a branch of Alibertia concolor (Cham.) K. Schum. 1889 (Rubiaceae), inside of which there were thirteen larvae of an unidentified species of Lepidoptera. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alibertia concolor; Braconidae; Hymenoptera; Oviposition behaviour; Parasitism. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000100024 |
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| Fernandes,G. Wilson; Fagundes,Marcílio; Greco,Magda K. Barcelos; Barbeitos,Marcos Soares; Santos,Jean Carlos. |
| The effects of ants on the insect community on inflorescences of Byrsonima crassifolia (Malpighiaceae) were tested in an ant exclusion experiment in a cerrado vegetation in southeastern Brazil. Forty-four species of insects (23 families) and nine species of ants (6 genera and 3 subfamilies) were found on the inflorescences of B. crassifolia. The exclusion of ants, primarily Camponotus sericeiventris and Camponotus spp., reduced the treehopper population to 20% of the original abundance. Ant exclusion and time influenced the abundance of chewing (Exclusion, P<0.001; Time, P<0.002), and sucking insects (Exclusion, P<0.02; Time, P<0.01). Twice as many chewing and sucking insects were found on ant-excluded inflorescences as compared to control... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ant-treehopper mutualism; Cerrado; Community structure; Insect herbivory. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262005000200011 |
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| Coelho,Marcel Serra; Almada,Emmanuel D.; Fernandes,G. Wilson; Carneiro,Marco Antonio A.; Santos,Rubens M. dos; Quintino,André V.; Sanchez-Azofeifa,Arturo. |
| Highly diverse forms of galling arthropods can be identified in much of southeastern Brazil's vegetation. Three fragments of a Seasonally Dry Tropical Forest (SDTF) located in the southern range of the Espinhaço Mountains were selected for study in the first survey of galling organisms in such tropical vegetation. Investigators found 92 distinct gall morphotypes on several organs of 51 host plant species of 19 families. Cecidomyiidae (Diptera) was the most prolific gall-inducing species, responsible for the largest proportion of galls (77%) observed. Leaves were the most frequently galled plant organ (63%), while the most common gall morphotype was of a spherical shape (30%). The two plant species, Baccharis dracunculifolia (Asteraceae) and Celtis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biodviersity; Biogeography; Host plant family; Herbivory; Insect galls; Richness. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000300015 |
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| Leite,Germano Leão Demolin; Veloso,Ronnie Von dos Santos; Silva,Farley Willian Souza; Guanabens,Rafael Eugênio Maia; Fernandes,G. Wilson. |
| For the first time, we identified the insect herbivore that induces one of the most conspicuous galls on the leaves of Caryocar brasiliense Camb. (Caryocaraceae), a widespread, typical cerrado woody plant of large economic importance. The gall inducing organism is a new and undescribed species of Eurytoma sp. (Hymenoptera, Eurytomidae). Furthermore, we recorded its spatial distribution within C. brasiliense trees. More Eurytoma galls were found on the eastern tree slope, followed the southern and northern slopes. More galls were found in the interior of the tree crown, i.e., on the proximal portion of the stems compared to the terminal portion. At the leaf level, more galls were found on the median region compared to the distal or proximal, perhaps due to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Insect distribution; Insect galls; Pequi; Trichomes. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000400015 |
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| Santos,Jean C.; Silveira,Fernando A. O.; Pereira,Ellen C.; Fernandes,G. Wilson. |
| Pattern of attack of a galling insect reveals an unexpected preference-performance linkage on medium-sized resources. The Plant Vigor Hypothesis (PVH) predicts oviposition preference and higher offspring performance on longer and fast-growing shoots, and although several studies have tested its predictions, long-term studies concerning the patterns of host selection by galling species are still lacking. The PVH was tested in this study using Bauhinia brevipes (Fabaceae) as the host of a leaf gall midge, Asphondylia microcapillata (Diptera, Cecidomyiidae) during three consecutive years. Shoots were collected from the same 80 plants between 2001 and 2003 and shoot length, number of healthy and galled leaves, gall number, and mortality factors were recorded.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Host selection; Insect galls; Mortality factors; Plant Vigor Hypothesis; Top-down effect. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000100012 |
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| Leite,Germano Leão Demolin; D'Ávila,Vinicius de Abreu; Cerqueira,Vinicius Matheus; Nascimento,Aline Fonseca do; Fernandes,G. Wilson. |
| We obtained the first data on spatial distribution of a spherical galling insect (Hymenoptera, Eulophidae) at the Caryocar brasiliense Camb. (Caryocaraceae) tree level. This work was developed in two pastures in Montes Claros, Minas Gerais State, Brazil. The areas studied were: pasture 1 (in activity) and pasture 2 (abandoned pasture = savanna in recovery). We evaluated the distribution of spherical galls in: foliage orientation (slope), among leaves (border and interior of the tree crown), among leaflets (right, central, left), distal, median, and proximal as well as border, central area, and adjacent to the mid leaf vein of the leaflet, and difference between areas in 10 infested trees per area. The smaller number of spherical gall/leaflet was observed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Galling insects; Insect distribution; Pequi. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262011000300013 |
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| Lara,Daniela P.; Oliveira,Lázaro A.; Azevedo,Islaine F. P.; Xavier,Márcia F.; Silveira,Fernando A. O.; Carneiro,Marco Antonio Alves; Fernandes,G. Wilson. |
| The plant architecture hypothesis predicts that variation in host plant architecture influences insect herbivore community structure, dynamics and performance. In this study we evaluated the effects of Macairea radula (Melastomataceae) architecture on the abundance of galls induced by a moth (Lepidoptera: Gelechiidae). Plant architecture and gall abundance were directly recorded on 58 arbitrarily chosen M. radula host plants in the rainy season of 2006 in an area of Cerrado vegetation, southeastern Brazil. Plant height, dry biomass, number of branches, number of shoots and leaf abundance were used as predicting variables of gall abundance and larval survival. Gall abundance correlated positively with host plant biomass and branch number. Otherwise, no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Insect galls; Plant size; Structural complexity. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000100014 |
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| Maia,Valéria Cid; Fernandes,G. Wilson; Magalhães,Henrique; Santos,Jean Carlos. |
| Two new species of Lopesia Rübsaamen (Diptera, Cecidomyiidae) associated with Mimosa hostilis (Mimosaceae) in Brazil Two new species of Lopesia Rübsaamen (Diptera, Cecidomyiidae, Lopesiini), L. mimosae Maia, sp. nov. and L. pernambucensis Maia, sp. nov., that induce galls on Mimosa hostilis Benth. (Mimosaceae) are described and illustrated based on material from "caatinga" in Pernambuco, Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caatinga; Cecidomyiidae; Diptera; Lopesia; Mimosaceae. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000400007 |
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| Registros recuperados: 28 | |
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