| Texto completo | |
| Autor(es): |
Nazareth, Tais M.
;
Sudatti, Daniela B.
;
Machado, Glauco
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Chemical Ecology; v. 42, n. 10, p. 1047-1051, OCT 2016. |
| Citações Web of Science: | 2 |
| Resumo | |
The expression of costly traits often depends on the amount of food available to the individuals. Chemical defenses are costly, thus their production should be condition-dependent. Here, we tested the hypothesis that an increase in food availability and an acetate-supplemented diet will increase the production of chemical defenses by the harvestman Magnispina neptunus, which releases alkylated benzoquinones biosynthesized using acetate as a precursor. We manipulated the diet of the individuals and created four experimental groups: well-fed with acetate, well-fed without acetate, poorly-fed with acetate, and poorly-fed without acetate. Well-fed individuals produced secretions with higher mass and concentration of benzoquinones than poorly-fed individuals, but we detected no significant effect of the acetate supplement. Thus, the production of benzoquinones is condition-dependent, and even short periods of dietary restriction may make individuals more vulnerable to predators, imposing fitness consequences to chemically-protected arthropods that biosynthesize their own defensive compounds. (AU) | |
| Processo FAPESP: | 12/50229-1 - Macro-ecologia da seleção sexual: influencia do clima sobre caracteres sexualmente selecionados em uma ampla escala geográfica |
| Beneficiário: | Glauco Machado |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 11/50800-8 - Defesa quimica em opilioes da familia gonyleptidae. |
| Beneficiário: | Taís Maria de Nazareth Gonçalves |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |