Influence of urbanisation and plants on the diversity and abundance of aphids and their ladybird and hoverfly predators in domestic gardens

Title:

Influence of urbanisation and plants on the diversity and abundance of aphids and their ladybird and hoverfly predators in domestic gardens

Creator:

Rocha, Elise A, Souza, Estevão N.F, Bleakley, Lewis A.D, Burley, Christopher, Mott, Jade L, Rue-Glutting, Gloria, and Fellowes, Mark D.E

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:b3a5cf32-b91b-4ff0-ae37-693129d08881
uuid:b3a5cf32-b91b-4ff0-ae37-693129d08881
issn:1210-5759
doi:10.14411/eje.2018.013

Subject:

polokřídlí, mšicovití, dvoukřídlí, slunéčkovití, pestřenkovití, životní prostředí měst, Hemiptera, Aphididae, Coccinellidae, Diptera, Syrphidae, urban ecology, Coleoptera, species interactions, diversity, abundance, 2, and 59

Type:

model:article and TEXT

Format:

print, počítač, and online zdroj

Description:

Urban gardens can harbour a high diversity of insects, which are critically important components of urban ecosystems. In this work, we investigate the richness and diversity of a major taxon of economic and ecological importance, the aphids (Hemiptera: Aphididae), and their main insect predators, the hoverflies (Diptera: Syrphidae) and ladybirds (Coleoptera: Coccinellidae), in urban gardens. We examined how variation in environmental factors associated with urbanisation (garden host plant abundance, garden plant richness, garden size, proportion of impervious surfaces in the surrounding area) directly and indirectly (via prey and predator abundance) influence the local diversity and abundance of aphids, ladybirds, and hoverflies. Sixty-seven domestic gardens located in southern England were surveyed during the peak period of aphid abundance, and the numbers and identity of aphids and their predators were recorded. We observed 45 aphid species (179917 individuals in total), 15 hoverfly species (494 individuals) and 8 ladybird species (173 individuals). We found that aphid species richness and abundance were positively associated with utilised host plant abundance and garden plant species richness. Hoverfly abundance was positively correlated with garden plant richness. The abundance of ladybirds was positively correlated with aphid abundance and garden plant species richness, and negatively associated to the proportion of impervious surfaces in the surrounding environment. The difference in responses between the two major taxa of aphid predators may reflect differences in their behaviour and natural history. Our results indicate that overall increases in urban land cover are not favourable for ladybirds as a group, and that fine scale habitat variables that are determined by garden owners have the potential to greatly affect the diversity of aphids and their primary predators., Elise A. Rocha, Estevão N.F. Souza, Lewis A.D. Bleakley, Christopher Burley, Jade L. Mott, Gloria Rue-Glutting, Mark D.E. Fellowes., and Obsahuje bibliografii

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2018 Volume:115 | Number:1

Harvested from:

CDK

Metadata only:

false