Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Detecting herbivory in two mosses from an Atlantic Forest, Brazil

Texto completo
Autor(es):
Maciel-Silva, Adaises S. [1] ; dos Santos, Nivea Dias
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Dept Plant Biol, Inst Biol, UNICAMP, BR-13081970 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF BRYOLOGY; v. 33, n. 2, p. 140-147, JUN 2011.
Citações Web of Science: 2
Resumo

We recorded evidence for herbivory in the mosses Hypopterygium tamarisci and Lopidium concinnum in a tropical rainforest (Sao Paulo State, Brazil). We described this herbivory quantitatively, measured the protein and phenol abundance, and identified potential herbivores in the laboratory. We sampled plants from 10 colonies of each species in the years 2007 and 2008. To quantify herbivory, we used an index of damage (ID), with six categories of injury from 0 (0%) to 5 (50-100%). Air-dried moss samples were weighed (100 mg) and used for protein and phenol detection by the Bradford and Folin-Ciocalteau methods, respectively. The plants were cultivated under controlled laboratory conditions and the identification of herbivores was performed from photographs. Injury was higher in H. tamarisci than in L. concinnum (68% and 38% in 2007 and 35% and 23% in 2008, respectively). H. tamarisci had higher mean ID (1.70 in 2007 and 1.09 in 2008); however, the ID values were low compared with ID values detected in angiosperms from tropical forests. Proteins were more abundant than phenol compounds for both species. H. tamarisci had the highest levels of protein and phenols. The phenol/protein ratios (ph/pt ratio) from H. tamarisci (0.42) and L. concinnum (0.40) were similar to those of other terrestrial plants. No correlation between ID and ph/pt ratio, proteins or phenols was detected. Lepidoptera larvae (Geometridae) and micro-snails (Charopidae) were found feeding mainly on the leaves of these mosses. Thus, H. tamarisci and L. concinnum are food sources for herbivores in the field, mainly as alternative food sources for some small and less mobile herbivores. (AU)

Processo FAPESP: 03/12595-7 - Composição florística, estrutura e funcionamento da Floresta Ombrófila Densa dos Núcleos Picinguaba e Santa Virgínia do Parque Estadual da Serra do Mar, estado de São Paulo, Brasil
Beneficiário:Carlos Alfredo Joly
Linha de fomento: Auxílio à Pesquisa - Programa BIOTA - Temático