Data/hora: 16/06/2024 09:19:51

Provedor de dados: | 21
País: | Germany
Título: | Below- and aboveground abundance and distribution of fungal entomopathogens in experimental conventional and organic cropping systems.
Autores: | Meyling, Nicolai V.; Thorup-Kristensen, Kristian; Eilenberg, Jørgen.
Data: | 2011
Ano: | 2011
Palavras-chave: | Soil biology; Biodiversity and ecosystem services.
Resumo: | The below- and aboveground communities of fungal entomopathogens (Ascomycota: Hypocreales) were investigated in an experimental conventional and organic vegetable cropping system over two seasons in Denmark. The experimental design allowed for evaluating differences between farming practices in the occurrence of soil-borne fungal entomopathogens and as natural infections aboveground in arthropod hosts. Belowground, Metarhizium anisopliae dominated the agricultural field with Beauveria bassiana, Metarhizium flavoviride and Isaria fumosorosea being present at lower frequencies. Abundances of M. anisopliae were not different between conventional and organic soils. Aboveground, B. bassiana was the most common fungal entomopathogen in arthropod host cadavers. Infections of M. flavoviride, Isaria farinosa and Gibellula spp. were also recorded. Most mycosed cadavers were recovered in August and September from conventionally farmed plots. Cadaver sizes ranged from 1.9 mm to 23.6 mm with means of 3.7 mm to 4.1 mm. Among host functional groups, predators dominated (47% - 63%) over herbivores, parasitoids and nectar-feeders. No occurrence of M. anisopliae was recorded among &gt;200 mycosed cadavers aboveground. The results therefore suggest that M. anisopliae is not involved in direct below- and aboveground interactions in the investigated agroecosystem. Conservation biological control strategies targeting M. anisopliae should thus be solely for controlling soil-dwelling pests in temperate regions as this fungus is unlikely naturally to infect aboveground hosts in the agroecosytem.
Tipo: | Journal paper
Idioma: | Inglês

Identificador:

http://orgprints.org/19301/4/19301.pdf

Meyling, Nicolai V.; Thorup-Kristensen, Kristian and Eilenberg, Jørgen (2011) Below- and aboveground abundance and distribution of fungal entomopathogens in experimental conventional and organic cropping systems. Biological Control, NA, pp. 1-7. [In Press]

info:doi/doi:10.1016/j.biocontrol.2011.07.017

Relação: | http://orgprints.org/19301/
Formato: | application/pdf