Estudo da fauna fitonematológica na Mata Atlântica do estado de São Paulo e na Floresta Amazônica do estado do Mato Grosso / Study of the plant parasitic nematode fauna in the Atlantic Forest from São Paulo state and the Amazon Forest from Mato Grosso state, Brazil

AUTOR(ES)

Rosangela Aparecida da Silva

DATA DE PUBLICAÇÃO

2008

RESUMO

A study about plant parasitic nematode fauna was conducted in two municipalities from São Paulo State (Pariquera-Açu and Cananéia in the Atlantic Forest) and two from Mato Grosso State (Nova Maringá and Guarantã do Norte in the Amazon Forest), Brazil. The aims of this study were to evaluate the diversity of plant-parasitic nematode fauna in locations of primary and to evaluate the effect of agricultural land use on the plant parasitic nematode communities. Nematodes were extracted from 200 cm³ of soil and 10 grams of roots by a sieving and sugar flotations technique and fixed with formalin. Nematodes were counted for determination of abundances of each taxon and the taxonomic identification was based on morphological and morphometric features. The following variables were obtained: abundance, frequency and similarity indexes (Jaccard and Bray e Curtis). A total number of 34 genera were recorded and 22 taxons were identified at species level. Concerning Aorolaimus banoae species, new morphological and morphometric features were presented. It was observed that, after removal of primary vegetation and implantation of perennial or annual crops, occurred a conspicuous reduction of plant parasitic nematode diversity, associated with introduction of exotic species, resulting in low similarity between location of primary vegetation and the cultivated ones. The results demonstrated that the agricultural practices affect strongly the plant parasitic nematode communities.

ASSUNTO(S)

plant-parasitic nematodes fauna pratylenchus loosi amazonia management nematóides parasitos de plantas. atlântic forest dolichodorus miradvulvus biodversidade diversity edaphic fauna aorolaimus amazon forest xiphinema luci. trophurus lomus abundance fauna edáfica florestas tropicais

Documentos Relacionados

• Diversidade de cianobactérias na filosfera da mata atlântica do estado de São Paulo
• Reasons of Atlantic Forest recovery in the state of São Paulo
• Fertilidade das camadas superficiais do solo em diferentes estágios sucessionais, no domínio da Mata Atlântica, no nordeste do estado de São Paulo
• Fitoquímica e ensaios biológicos de óleos essenciais de Pimenta pseudocaryophyllus e Hedychium coronarium da Mata Atlântica do Estado de São Paulo
• Diversity of pteridophytes along altitudinal gradients in the Atlantic Rain Forest of the Paraná State, Brazil