Consumo de Formigas Cortadeiras por Tamanduá-Bandeira Myrmecophaga tridactyla (Linnaeus, ) em Plantios de Pinus spp. no Paraná, Brasil. Obtenção de inseticida e fungicida contra formigas cortadeiras e seu fungo simbionte em Myracrodruon urundeuva e de complexos de coordenação com. 7 ago. Cortadeiras. Atta bisphaerica (saúva mata pasto)*. A. capiguara (saúva parda)*. A. laevigata (saúva cabeça de vidro). A. sexdens sexdens.
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Seed dispersal by ants myrmecochory is important for many species of plants.
Ants respond to the external stimulations promoted by an appendage elaiosome rich in lipids, attached on to the seed, by carrying the seeds to their nests, where the appendage is removed and used as food. In xortadeiras work t Doutorado em Entomologia Department: Interaction between ants and seeds, with emphasis in the leafcutting ants.
In this work the behavioral and ecological aspects of the interaction between ants and seeds were investigated. Part of the experiments was carried cortzdeiras in laboratory and part in the field.
Initially the role of volatile produced by elaiosome of seeds of Cortafeiras fisutlifera Euphorbiaceae in the attraction of ants Atta sexdens rubropilosa and Atta bisphaerica was investigated, with the use of olfactometry in laboratory. After that, in the field, the attractiveness of baits made of elaiosome, elaiosome-grass and commercial baits were investigated. In olfactometer, the ants were attracted by volatile of the seeds with elaiosome and by odor of commercial baits when air was offered as alternative source.
In the field A.
Workers of this species collected more the combination of elaiosome-grass bait. It was concluded that volatiles of seed elaiosomes were clrtadeiras to the fodmigas, and also that composites formjgas elaiosome have potential to be used in the confection of toxic baits. The second part of the work was to answer the following questions: Why workers of A.
Three experiments of behavior with seeds of M. In the second test, glued seeds were offered; in the third test, the seeds were allowed to be explored by the workers of leaf-cutting ants with the presence of two invading species, Pheidole sp.
The presence of these invaders influenced the exploration, cut and transport time of the seeds by the leaf-cutting ants. The removal of elaiosome was made essentially by the minor workers inside the colony.
In the third and last part removal rates of seeds in two succession stage; old field with shrub regeneration and secondary forest, in tropical and temperate environments were evaluated.
Another objective was to emphasize the important role the ants can exert in these environments. Thus the aim of this last experiment was to answer the following questions: And test the following hypothesis: Two areas were chosen to conduct this last work: In both the study areas, the research was conducted in two habitats, secondary forest and old field, using seeds of M.
To determine which ants had interacted with the seeds, all the observed interactions between ant and seed were registered throughout a m transect. To compare the removal of seeds by ants and vertebrates in the two areas forest and old fieldtwo parallel m transects were established in each area within the Acamari or ESGR. In the experiments wire cages 15 x 15 x 10 cm; 1.
These cages allowed free access to the ants. It was observed that, different species of ants interacted with the seeds of M. Each species of ant treated the seeds in different ways. They effectively dispersed the seeds of S. The contribution of vertebrates in seed removal was expressive in the tropical area. However, in these areas, the contribution given by the ants was also relatively important. The period of the day only influenced the rate of removal in the tropical area, being higher in the nocturnal period.
Typical myrmecochorous seeds were relatively more collected than the diplochorous. The study and understanding of the mirmecochory have become important tools for the comprehending the dynamics of establishment of many plant communities.
This tool could be further used for understanding succession processes in environment recovery.
Formigas Cortadeiras na trilha – Picture of Ecologic Ville Resort, Caldas Novas – TripAdvisor
George nos Estados Unidos. A segunda parte dos trabalhos foi responder a seguinte pergunta: No segundo teste, sementes coladas foram oferecidas. No Acamari trabalhou-se com sementes de M. Elas efetivamente dispersaram as sementes de S. Made available in DSpace on T Peternelli, Ethel Fernandes de Oliveira Published: Formicidae em eucaliptais by: Padilha, Marco Antonio Published: Formicidae com produtos naturais by: Peternelli, Ethel Fernandes de Oliveira.
Seed dispersal Leaf-cutting ant Myrmecochory.