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Insect-plant interactions: new pathways to a better comprehension of ecological communities in Neotropical savannas Neotropical Entomology
Del-Claro,Kleber; Torezan-Silingardi,Helena M.
The causal mechanisms shaping and structuring ecological communities are among the most important themes in ecology. The study of insect-plant interactions in trophic nets is pointed out as basic to improve our knowledge on this issue. The cerrado tropical savanna, although extremely diverse, distributed in more than 20% of the Brazilian territory and filled up with rich examples of multitrophic interactions, is underexplored in terms of biodiversity interaction. Here, this ecosystem is suggested as valuable to the study of insect-plant interactions whose understanding can throw a new light at the ecological communities' theory. Three distinct systems: extrafloral nectary plants or trophobiont herbivores and the associated ant fauna; floral...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Community; Ecological interaction; Herbivory.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000200001
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Pollination of Adenocalymma bracteatum (Bignoniaceae): floral biology and visitors Neotropical Entomology
Almeida-Soares,Stela; Polatto,Leandro P; Dutra,João C S; Torezan-Silingardi,Helena M.
Adenocalymma bracteatum is a shrub of dense foliage and yellow flowers, easily found on grasslands areas in Central Brazil. The aim of this study was to determine the reproductive biology and the flower visitors of A. bracteatum in a pasture area nearby Ivinhema city, MS (Brazil). The flowering peak occurs in winter. The flower reflects ultraviolet light. Anthesis begins at 6:30h, and pollen and nectar are the resources to visitors. We captured 1,038 floral visitors. The bees Apis mellifera (L.), Trigona sp., Trigona spinipes (Fabricius), (Hymenoptera: Apoidea) and the ant Cephalotes sp. (Hymenoptera: Formicidae) were the main visitors. The reproductive tests indicate that A. bracteatum is self compatible, justifying its expansion in altered environments;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Floral trait; Pillager; Pollinator; Bee.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000600015
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