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| Pessoa-Queiroz,Rosevaldo; Morais,Helena Castanheira de; Diniz,Ivone Rezende. |
| The seasonal characteristics of the Cerrado region strongly influence food resource predictability and vegetal tissue nutritional content. The aims of this work were to record the abundance and temporal distribution of Gonioterma exquisita Duckworth, 1964 (Lepidoptera, Elachistidae) and its relation with phenological, physical, and chemical traits of the host plant Byrsonima pachyphylla Griseb. (Malpighiaceae). Four nutritional quality parameters were determined for new and mature leaves: gross protein and nitrogen content, dry matter, and in vitro digestibility. We inspected 200 plants per month, searching for G. exquisita caterpillars. About 35.8% of the 2,400 plants inspected presented caterpillars, with an abundance peak in the wet season. Caterpillar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Leaf phenology; Mechanical defense; Nutritional quality; Restricted diet. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262008000100011 |
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| Paiva,Élder Antônio Sousa e; Morais,Helena Castanheira de; Isaias,Rosy Mary dos Santos; Rocha,Dulce Maria Sucena da; Oliveira,Paulo Eugênio. |
| Extrafloral nectaries (EFNs) are structurally variable and widely spread among the angiosperms. The occurrence of EFNs in leaves of Pterodon polygalaeflorus Benth. and Pterodon pubescens Benth. (Fabaceae: Papilionoideae) were detected in adult specimens, at the time of production of new buds and flowers. The goals of the present study are to register the occurrence of the EFNs in P. pubescens and P. polygalaeflorus, and provide comparative data on the anatomical structures. The EFNs occur in the rachis and are located under the insertion of each petiolule. Each nectary consists of a small elevation whose apical portion is deeply invaginated, resulting in a depression (secretory pole), a common characteristic of both species. Unicellular, nonglandular... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nectaries; Plant anatomy; Plant secretions; Nectar; Plant protection; Herbivores; Plant animal relations. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2001000200002 |
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