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Data for research article 'Establishment, spread and impact of an invasive planthopper on its invasive host plant: Prokelisia marginata (Homoptera: Delphacidae) exploiting Spartina anglica (Poales: Poaceae) in Britain'

dataset
posted on 20.07.2020 by Claire Harkin, Alan Stewart
Data for paper published in Ecological Entomology July 2020


Data contains arthropod community composition observational surveys and impact of P. marginata colonisation on performance metrics of S. anglica host plants under field and glasshouse experimental conditions.

For details, please read the methods in the published paper.

Abstract

1. Since its recent arrival in Britain, the planthopper Prokelisia marginata has spread widely around saltmarshes on the east and south coast of England and south Wales, feeding on Common Cordgrass, Spartina anglica, itself an invasive non-native species.

2. Results suggest that P. marginata populations in Britain are benefitting from a degree of natural enemy release. No evidence of parasitism was found in over 71,000 eggs, nymphs and adults inspected. The only potential natural enemy control was suggested by a positive correlation between the densities of planthoppers and generalist spiders.

3. Experimental exposure under both glasshouse and field conditions to typical field densities of planthoppers resulted in significant negative effects on a number of host plant performance metrics.

4. S. anglica is important for stabilising estuarine sediments and has been deliberately planted for this purpose in the past. Its weakening as a result of heavy planthopper herbivory could have serious consequences for the long-term stability of Britain’s vulnerable saltmarsh habitats.




Funding

Zoology ESRC/NERC Training Grant 2011

Economic and Social Research Council

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University of Sussex School of Life Sciences

Gilchrist Educational Trust

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