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Doña J, Moreno-García M, Criscione CD, et al. Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system. Ecol Evol. 2015;5(24):5801-9doi: 10.1002/ece3.1842.
Doña, J., Moreno-García, M., Criscione, C. D., Serrano, D., & Jovani, R. (2015). Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system. Ecology and evolution, 5(24), 5801-9. https://doi.org/10.1002/ece3.1842
Doña, Jorge, et al. "Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system." Ecology and evolution vol. 5,24 (2015): 5801-9. doi: https://doi.org/10.1002/ece3.1842
Doña J, Moreno-García M, Criscione CD, Serrano D, Jovani R. Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system. Ecol Evol. 2015 Nov 24;5(24):5801-9. doi: 10.1002/ece3.1842. eCollection 2015 Dec. PMID: 26811755; PMCID: PMC4717341.
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Ecol Evol. 2015 Nov 24;5(24):5801-9. doi: 10.1002/ece3.1842. eCollection 2015 Dec.

Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system.

Ecology and evolution

Jorge Doña, Marina Moreno-García, Charles D Criscione, David Serrano, Roger Jovani

Affiliations

  1. Department of Evolutionary Ecology Estación Biológica de Doñana (CSIC) Avda. Americo Vespucio s/n Sevilla Spain.
  2. Department of Biology Texas A&M University 3258 TAMU College Station Texas 77843.
  3. Department of Conservation Biology Estación Biológica de Doñana (CSIC) Avda Americo Vespucio s/n Sevilla Spain.

PMID: 26811755 PMCID: PMC4717341 DOI: 10.1002/ece3.1842

Abstract

Understanding what shapes variation in genetic diversity among species remains a major challenge in evolutionary ecology, and it has been seldom studied in parasites and other host-symbiont systems. Here, we studied mtDNA variation in a host-symbiont non-model system: 418 individual feather mites from 17 feather mite species living on 17 different passerine bird species. We explored how a surrogate of census size, the median infrapopulation size (i.e., the median number of individual parasites per infected host individual), explains mtDNA genetic diversity. Feather mite species genetic diversity was positively correlated with mean infrapopulation size, explaining 34% of the variation. As expected from the biology of feather mites, we found bottleneck signatures for most of the species studied but, in particular, three species presented extremely low mtDNA diversity values given their infrapopulation size. Their star-like haplotype networks (in contrast with more reticulated networks for the other species) suggested that their low genetic diversity was the consequence of severe bottlenecks or selective sweeps. Our study shows for the first time that mtDNA diversity can be explained by infrapopulation sizes, and suggests that departures from this relationship could be informative of underlying ecological and evolutionary processes.

Keywords: COI; demography; feather mites; genetic diversity; host‐parasite interactions; mtDNA

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