Data/hora: 09/06/2024 05:58:33

Provedor de dados: | 82
País: | Brazil
Título: | Distribution and frequency of galls induced by Anisodiplosis waltheriae Maia (Diptera: Cecidomyiidae) on the invasive plant Waltheria indica L. (Sterculiaceae)
Autores: | Almeida,Felipe V.M.; Santos,Jean C.; Silveira,Fernando A.O.; Fernandes,Geraldo W.
Data: | 2006-08-01
Ano: | 2006
Palavras-chave: | Aimorés; Atlantic Forest; Insect gall; Herbivory; Mortality factor; Biological invasion.
Resumo: | The frequency of galls induced by Anisodiplosis waltheriae Maia, a recently described species, on Waltheria indica L. was studied. W. indica is an invasive weed in regeneration areas of Atlantic Forest in southeastern Brazil. Plants were collected in May 2004 and above-ground biomass, main stem length, number of leaves, number of galls per leaf and leaf area of each individual were recorded. Nearly 90% of all plants and 25% of all leaves were attacked by the gall midge, with an average of 0.67 galls/leaf. Leaf area had a weak effect on gall abundance while the number of leaves had no effect on gall abundance. Only 31% of the variation in gall abundance was explained by plant biomass. Natural enemies killed one third of the sampled galls. Predation accounted for 22.9% of gall mortality, unknown factors killed 7.6%, microhymenopteran parasitoids killed 2.5% and fungi only 1%. Mortality factors were not influenced by leaf area or gall density.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000400002
Editor: | Sociedade Entomológica do Brasil
Relação: | 10.1590/S1519-566X2006000400002
Formato: | text/html
Fonte: | Neotropical Entomology  v.35 n.4 2006
Fonte: | info:eu-repo/semantics/openAccess