Positive and negative effects of phoretic mites on the reproductive output of an invasive bark beetle

Hodgkin, Lisa K., Elgar, Mark A. and Symonds, Matthew R. E. 2010, Positive and negative effects of phoretic mites on the reproductive output of an invasive bark beetle, Australian journal of zoology, vol. 58, no. 3, pp. 198-204, doi: 10.1071/ZO10034.

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Title Positive and negative effects of phoretic mites on the reproductive output of an invasive bark beetle
Author(s) Hodgkin, Lisa K.
Elgar, Mark A.
Symonds, Matthew R. E.ORCID iD for Symonds, Matthew R. E. orcid.org/0000-0002-9785-6045
Journal name Australian journal of zoology
Volume number 58
Issue number 3
Start page 198
End page 204
Total pages 7
Publisher CSIRO Publishing
Place of publication Collingwood, Vic.
Publication date 2010-09
ISSN 0004-959X
1446-5698
Keyword(s) Acari
commensalism
ectoparasite
host reproduction
mutualism
Scolytinae
symbiosis
Summary When multiple species coexist upon a single host, their combined effect on the host can be unpredictable. We explored the effect of phoretic mites on the reproductive output of the five-spined bark beetle, Ips grandicollis. Using correlative approaches and experimental manipulation of mite numbers we examined how mite load affected the number, size and condition of bark beetle offspring produced. We found that mites have both negative and positive consequences on different aspects of bark beetle reproduction. Females from which mites were removed were more fecund and produced larger offspring than females with mites, implying a cost of mite loads. However, when mites were present on females, those bearing the highest mite loads produced offspring that were larger and in better condition, indicating a beneficial effect of mites. These data suggest that phoretic interactions between mites and bark beetles differ over the course of the host’s lifespan, with either the mites interacting in different ways with different life stages of the host (parasitic on adult, mutualistic with larvae), and/or the beetles being host to different mite assemblages over their lifetime.
Language eng
DOI 10.1071/ZO10034
Field of Research 060201 Behavioural Ecology
060808 Invertebrate Biology
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, CSIRO
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039054

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