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  Immune defence strategies of generalist and specialist insect herbivores

Barthel, A., Kopka, I., Vogel, H., Zipfel, P., Heckel, D. G., & Groot, A. T. (2014). Immune defence strategies of generalist and specialist insect herbivores. Proceedings of the Royal Society B: Biological Sciences, 281: 20140897. doi:10.1098/rspb.2014.0897.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-0019-90F0-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-810C-D
Genre: Journal Article

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https://www.ncbi.nlm.nih.gov/pubmed/24943370 (Publisher version)
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 Creators:
Barthel, Andrea1, 2, Author           
Kopka, Isabell, Author
Vogel, Heiko1, Author           
Zipfel, Peter, Author
Heckel, David G.1, Author           
Groot, Astrid T.1, Author           
Affiliations:
1Department of Entomology, Prof. D. G. Heckel, MPI for Chemical Ecology, Max Planck Society, ou_421895              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              

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 Abstract: Ecological immunology examines the adaptive responses of animals to pathogens in relation to other environmental factors and explores the consequences of trade-offs between investment in immune function and other life-history traits. Among species of herbivorous insects, diet breadth may vary greatly, with generalists consuming a wide variety of plant families and specialists restricted to a few species. Generalists may thus be exposed to a wider range of pathogens exerting stronger selection on the innate immune system. To examine whether this produces an increase in the robustness of the immune response, we compared larvae of the generalist herbivore Heliothis virescens and the specialist Heliothis subflexa challenged by entomopathogenic and non-pathogenic bacteria. Heliothis virescens larvae showed lower mortality, a lower number of recoverable bacteria, lower proliferation of haemocytes and higher phagocytic activity. These results indicate a higher tolerance to entomopathogenic bacteria by the generalist, which is associated with a more efficient cell-mediated immune response by mechanisms that differ between these closely related species. Our findings provide novel insights into the consequences of diet breadth and related environmental factors, which may be significant in further studies to understand the ecological forces and investment trade-offs that shape the evolution of innate immunity.

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 Dates: 2014-05-232014-07-182014
 Publication Status: Issued
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 Identifiers: Other: HEC275
DOI: 10.1098/rspb.2014.0897
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Title: Proceedings of the Royal Society B: Biological Sciences
  Abbreviation : Proc. R. Soc. B
Source Genre: Journal
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Publ. Info: London : Royal Society
Pages: - Volume / Issue: 281 Sequence Number: 20140897 Start / End Page: - Identifier: ISSN: 0962-8452
CoNE: https://pure.mpg.de/cone/journals/resource/110975500577295_2