Intraguild interactions between the entomopathogenic fungus Pandora neoaphidis and an aphid predator and parasitoid at the population scale

A - Papers appearing in refereed journals

Baverstock, J., Clark, S. J., Alderson, P. G. and Pell, J. K. 2009. Intraguild interactions between the entomopathogenic fungus Pandora neoaphidis and an aphid predator and parasitoid at the population scale. Journal of Invertebrate Pathology. 102 (2), pp. 167-172.

AuthorsBaverstock, J., Clark, S. J., Alderson, P. G. and Pell, J. K.
Abstract

The interactions that occur between the entomopathogenic fungus Pandora neoaphidis and a predator (Coccinella septempunctata) and a parasitoid (Aphidius ervi) were assessed in microcosm and polytunnel experiments. Transmission of P. neoaphidis to the pea aphid, Acyrthosiphon pisum, was enhanced in the presence of both C. septempunctata and A. ervi in microcosm experiments done under fixed abiotic conditions. In contrast, the reproductive success of A. ervi was reduced in the presence of P. neoaphidis. Despite the increased fungal transmission in the presence of C. septempunctata, there was no additional decrease in the aphid population indicating that P. neoaphidis is functionally redundant in the presence of the coccinellid. In polytunnel experiments the reproductive success of A. ervi was not affected by P. neoaphidis. These results do not support those of the microcosm and may be due to the more natural abiotic conditions in the polytunnel reducing the competitive advantage of the fungus. Microcosms therefore provide an arena in which the interactions between fungal pathogens and other aphid-natural enemies can be assessed however, further assessments at increased spatial scales under more natural abiotic conditions are also required to accurately determine the outcome of these interactions.

KeywordsPandora neoaphidis; Aphidius ervi; Coccinella septempunctata; Intraguild predation
Year of Publication2009
JournalJournal of Invertebrate Pathology
Journal citation102 (2), pp. 167-172
Digital Object Identifier (DOI)doi:10.1016/j.jip.2009.07.014
Open accessPublished as non-open access
FunderDepartment of Environment, Food and Rural Affairs
Biotechnology and Biological Sciences Research Council
Funder project or codeSEF
MCB
Arable crops ecosystems - habitat diversification, crop management and natural enemies for crop protection and biodiversity
Bio Nano Consult (Rocre Tenant)
Output statusPublished
Publication dates
Online12 Aug 2009
Publication process dates
Accepted31 Jul 2009
Copyright licensePublisher copyright
ISSN0022-2011
PublisherElsevier

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