Document Detail

Food-environment mediates the outcome of specific interactions between a bumblebee and its trypanosome parasite.
MedLine Citation:
PMID:  21967438     Owner:  NLM     Status:  In-Data-Review    
Specific host-parasite interactions, where the outcome of exposure to a parasite depends upon the genotypic identity of both parties, have implications for understanding host-parasite coevolution and patterns of genetic diversity. Thus, grasping the extent to which these interactions are mediated by environmental changes in a spatially and temporally heterogeneous world is vital. In this study, it is shown that the environment can influence specific host-parasite interactions in the well-studied system of the bumblebee Bombus terrestris and its trypanosome parasite Crithidia bombi. Naturally relevant variation in the quality of the food environment formed a three-way interaction with both host and parasite identity in determining the outcome of infection, with regard to the resistance of the host and the transmission of the parasite. The demonstration of such a host-genotype by parasite-genotype by environment interaction (G(H) x G(P) x E) shows the importance of considering environmental variation when investigating host-parasite interactions. Moreover, such interactions may to some extent explain levels of genetic diversity in natural host-parasite systems owing to the fact that they will create selection mosaics when environments are heterogeneous.
Ben M Sadd
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Publication Detail:
Type:  Journal Article     Date:  2011-06-07
Journal Detail:
Title:  Evolution; international journal of organic evolution     Volume:  65     ISSN:  1558-5646     ISO Abbreviation:  Evolution     Publication Date:  2011 Oct 
Date Detail:
Created Date:  2011-10-04     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373224     Medline TA:  Evolution     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2995-3001     Citation Subset:  IM    
Copyright Information:
© 2011 The Author(s). Evolution© 2011 The Society for the Study of Evolution.
Institute of Integrative Biology, ETH Zurich, Universitätstrasse 16, 8092, Zurich, Switzerland E-mail:
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