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| Registros recuperados: 13 | |
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| Barbosa,Marcela Silva; Borges,Lucas Rodrigues; Vilela,Diogo Silva; Venâncio,Henrique; Santos,Jean Carlos. |
| Abstract Dragonflies and damselflies (Insecta: Odonata) are widely distributed among freshwater ecosystems of tropical and temperate environments. They are also particularly sensitive to anthropogenic changes. The objective of this study was to inventory the odonate fauna of a section of the Sucupira Reservoir on Rio Uberabinha, Uberlândia, Minas Gerais, Brazil, and to document the species composition of the odonate fauna during the dry and rainy seasons. The study also aimed to describe the distribution of the sampled species in Brazilian states. Sampling took place in August and September of 2017 (dry season) and in February and March of 2018 (rainy season), and recorded 860 individuals of 43 species belonging to 26 genera and six families. Six new... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Inventory; Damselfly; Dragonfly; Odonata. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100222 |
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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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| 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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| Hilarino,Mariana Patrícia Amorim; Silveira,Fernando Augusto de Oliveira e; Oki,Yumi; Rodrigues,Leonardo; Santos,Jean Carlos; Corrêa Junior,Ary; Fernandes,Geraldo Wilson; Rosa,Carlos Augusto. |
| Endophytic fungi represent large, yet unexplored components of biodiversity. This work evaluated the richness and the distribution of endophytes in the leaves of Bauhinia brevipes (Fabaceae). A total of 1110 colonies were recovered from the samples and grouped by their morphological traits into 126 taxa. The total number of taxa according to leaf development was: 102 in mature leaves, 93 in recently expanded leaves and 79 for unfolded leaves. The major endophyte genera were Phomopsis, followed by Dothiorella, Pestalotiopsis and Acremonium. The richness and the isolate numbers of endophytes were not statistically affected by leaf region. However, some taxa were leaf-age specific; six were isolated only from unfolded leaves, nine from recently expanded... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant-endophyte interaction; Phomopsis; Tissue-recurrence; Endophyte richnes. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062011000400008 |
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| Venâncio,Henrique; Alves-Silva,Estevao; Santos,Jean Carlos. |
| ABSTRACT For pioneer plants, shaded habitats represent a stressful condition, where sunlight exposure is below the optimum level and so leaves expand in order to intercept a greater amount of light. We investigated changes in both phenotypic variation and stress of Bauhinia brevipes in sunny and shaded microhabitats. Leaf area was used as a measure of phenotypic variation, whereas leaf asymmetry (difference between right and left sides of leaves), was used as a measure of stress. We hypothesized an increase in leaf area and stress in shaded locations, which might indicate that B. brevipes was compensating for low light absorption, and elevated levels of stress, respectively. Plants in the sun fitted a fluctuating asymmetry pattern (normal distribution of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antisymmetry; Bauhinia brevipes; Fluctuating asymmetry; Leaf morphometry; Sunlight exposure. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000200296 |
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| Silveira,Fernando Augusto Oliveira; Santos,Jean Carlos; Fernandes,Geraldo Wilson. |
| In this study we investigated the effects of light, temperature, and storage on seed germination of the wild pineapple Ananasananassoides, an understorey species found in cerrado woodlands. Seeds were germinated at temperatures of 15, 20, 25, 30 and 35 ºC and a 12-hr photoperiod and continuous darkness for 30-d. Seeds were photoblastic and the optimum temperatures for germination were 25 and 30 ºC. Seeds stored for 12-mo at room temperature and at 4 ºC were set to germinate at optimum conditions. Germinability of stored seeds did not differ from that of recently collected seeds, regardless of storage temperature, indicating their physiological potential for seed bank formation. Our results suggest that as in tropical rainforests, light may be an important... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cerrado; Photoblastism; Recruitment; Seed bank; Seed storage. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062010000400026 |
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| Borges,Lucas Rodrigues; Barbosa,Marcela Silva; Carneiro,Marco Antônio Alves; Vilela,Diogo Silva; Santos,Jean Carlos. |
| Abstract: Odonata is considered, among the aquatic insect orders, the second largest group in number of species. Its global richness is estimated in about 6,000 described species. The Brazilian richness represents around 14% of the world's odonatofauna, however, the knowledge on Brazilian dragonflies distribution is still poor. This study purpose an inventory of the dragonflies species present in aquatic habitats from a Preserved Area according to the Brazilian Forest Code, located in the Cerrado biome at Triângulo Mineiro, Minas Gerais. In the dry season, from April to June of 2017, we collected 680 specimens belonging to 36 species and six families. Among the collected species, Elasmothemis williamsoni was observed by the first time in Minas Gerais... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Inventory; Biodiversity; Vereda; Odonata. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100304 |
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| Registros recuperados: 13 | |
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