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  The effect of Echinorhynchus borealis (Acanthocephala) infection on the anti-predator behavior of a benthic amphipod

Benesh, D. P., Kitchen, J., Pulkkinen, K., Hakala, I., & Valtonen, E. T. (2008). The effect of Echinorhynchus borealis (Acanthocephala) infection on the anti-predator behavior of a benthic amphipod. Journal of Parasitology, 94(2), 542-545. doi:10.1645/GE-1380.1.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-000F-D6CA-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-68A3-E
Genre: Journal Article

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50169.pdf (Publisher version), 244KB
 
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 Creators:
Benesh, D. P.1, Author              
Kitchen, J., Author
Pulkkinen, K., Author
Hakala, I., Author
Valtonen, E. T., Author
Affiliations:
1Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445634              

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 Abstract: In benthic habitats, predators can generally not be detected visually, so olfaction may be particularly important for inducing anti-predation behaviors in prey organisms. Manipulative parasites infecting benthic hosts could suppress these responses so as to increase the probability of predation and thus trophic transmission. We studied how infection with the acanthocephalan Echinorhynchus borealis affects the response of the benthic amphipod Pallasea quadrispinosa to water conditioned by burbot (Lota lota), the parasite's definitive host. In normal lake water, refuge use by infected and uninfected amphipods was similar, but when exposed to burbot-conditioned water, uninfected amphipods spent much more time hiding than infected amphipods. Thus, rather than affecting ambient hiding behavior, E. borealis infection seems to alter host response to a predator. A group of amphipods sampled from a postglacial spring that is devoid of fish predators exhibited only a weak response to burbot-conditioned water, perhaps suggesting these anti-predator behaviors are costly to maintain. The hiding behavior of spring and infected amphipods was very similar. If the reduced refuge use by the spring amphipods reflects adaptation to a predator-free environment, this indicates that E. borealis severely weakens its host's anti-predator behavior. Presumably this increases the likelihood of parasite transmission.

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Language(s): eng - English
 Dates: 2008-04
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: -
 Identifiers: eDoc: 391471
DOI: 10.1645/GE-1380.1
Other: 2647/S 38921
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Title: Journal of Parasitology
  Alternative Title : J. Parasitol.
Source Genre: Journal
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Pages: - Volume / Issue: 94 (2) Sequence Number: - Start / End Page: 542 - 545 Identifier: ISSN: 0022-3395