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The potential for arms race and Red Queen coevolution in a protist host-parasite system.

Råberg, Lars LU ; Alacid, Elisabet; Garces, Esther and Figueroa, Rosa LU (2014) In Ecology and Evolution 4(24). p.4775-4785
Abstract
The dynamics and consequences of host-parasite coevolution depend on the nature of host genotype-by-parasite genotype interactions (G × G) for host and parasite fitness. G × G with crossing reaction norms can yield cyclic dynamics of allele frequencies ("Red Queen" dynamics) while G × G where the variance among host genotypes differs between parasite genotypes results in selective sweeps ("arms race" dynamics). Here, we investigate the relative potential for arms race and Red Queen coevolution in a protist host-parasite system, the dinoflagellate Alexandrium minutum and its parasite Parvilucifera sinerae. We challenged nine different clones of A. minutum with 10 clones of P. sinerae in a fully factorial design and measured infection... (More)
The dynamics and consequences of host-parasite coevolution depend on the nature of host genotype-by-parasite genotype interactions (G × G) for host and parasite fitness. G × G with crossing reaction norms can yield cyclic dynamics of allele frequencies ("Red Queen" dynamics) while G × G where the variance among host genotypes differs between parasite genotypes results in selective sweeps ("arms race" dynamics). Here, we investigate the relative potential for arms race and Red Queen coevolution in a protist host-parasite system, the dinoflagellate Alexandrium minutum and its parasite Parvilucifera sinerae. We challenged nine different clones of A. minutum with 10 clones of P. sinerae in a fully factorial design and measured infection success and host and parasite fitness. Each host genotype was successfully infected by four to ten of the parasite genotypes. There were strong G × Gs for infection success, as well as both host and parasite fitness. About three quarters of the G × G variance components for host and parasite fitness were due to crossing reaction norms. There were no general costs of resistance or infectivity. We conclude that there is high potential for Red Queen dynamics in this host-parasite system. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Ecology and Evolution
volume
4
issue
24
pages
4775 - 4785
publisher
Wiley-Blackwell
external identifiers
  • pmid:25558368
  • wos:000346736200017
  • scopus:84919848217
ISSN
2045-7758
DOI
10.1002/ece3.1314
language
English
LU publication?
yes
id
a9ba90d9-6df2-448e-842b-5dac8b396b3f (old id 5041202)
date added to LUP
2015-02-10 13:54:18
date last changed
2017-05-07 03:51:48
@article{a9ba90d9-6df2-448e-842b-5dac8b396b3f,
  abstract     = {The dynamics and consequences of host-parasite coevolution depend on the nature of host genotype-by-parasite genotype interactions (G × G) for host and parasite fitness. G × G with crossing reaction norms can yield cyclic dynamics of allele frequencies ("Red Queen" dynamics) while G × G where the variance among host genotypes differs between parasite genotypes results in selective sweeps ("arms race" dynamics). Here, we investigate the relative potential for arms race and Red Queen coevolution in a protist host-parasite system, the dinoflagellate Alexandrium minutum and its parasite Parvilucifera sinerae. We challenged nine different clones of A. minutum with 10 clones of P. sinerae in a fully factorial design and measured infection success and host and parasite fitness. Each host genotype was successfully infected by four to ten of the parasite genotypes. There were strong G × Gs for infection success, as well as both host and parasite fitness. About three quarters of the G × G variance components for host and parasite fitness were due to crossing reaction norms. There were no general costs of resistance or infectivity. We conclude that there is high potential for Red Queen dynamics in this host-parasite system.},
  author       = {Råberg, Lars and Alacid, Elisabet and Garces, Esther and Figueroa, Rosa},
  issn         = {2045-7758},
  language     = {eng},
  number       = {24},
  pages        = {4775--4785},
  publisher    = {Wiley-Blackwell},
  series       = {Ecology and Evolution},
  title        = {The potential for arms race and Red Queen coevolution in a protist host-parasite system.},
  url          = {http://dx.doi.org/10.1002/ece3.1314},
  volume       = {4},
  year         = {2014},
}