| Texto completo | |
| Autor(es): |
Bottcher, Claudia
;
Oliveira, Paulo S.
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF TROPICAL ECOLOGY; v. 30, p. 4-pg., 2014-11-01. |
| Resumo | |
Odontomachus chelifer ants collect fallen arillate seeds of Cabralea canjerana (Meliaceae), a bird-dispersed tree of the Atlantic rain forest. In the nest the larvae are fed with the lipid-rich aril, and the viable seed is discarded. Benefits from secondary seed dispersal by ants are well documented for tropical plants, but benefits to ants from consuming vertebrate-dispersed diaspores are uncertain. Twelve captive colonies of O. chelifer were used to investigate the effect of aril consumption on larval development. Treatment colonies were supplemented with 1 g of C. canjerana arils, whereas control colonies were supplemented with 1 g of synthetic diet. Egg and larval production did not differ between experimental colonies after 5 mo. Aril-fed larvae, however, grew 3.5 times larger than those in control colonies. Essential fatty acids in the arils possibly account for improved larval development. Consumption of lipid-rich arils may be critical under scarcity of arthropod prey. Improved larval development through aril consumption confirms that this ant-seed interaction is facultatively mutualistic. This result is meaningful given the predominantly carnivorous diet of O. chelifer, and the generalized nature of ant-seed/fruit interactions in tropical forests. Whether or not benefits to larvae translate into significant gains for ant colonies is uncertain. (AU) | |
| Processo FAPESP: | 12/23671-5 - Interações entre formigas e plantas com nectários extraflorais: padrões comunitários ao longo de um gradiente latitudinal no bioma do cerrado |
| Beneficiário: | Paulo Sergio Moreira Carvalho de Oliveira |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |