title: Species mtDNA genetic diversity explained by infrapopulation size in a host-symbiont system.
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.
authors.affiliation: Department of Evolutionary Ecology Estación Biológica de Doñana (CSIC) Avda. Americo Vespucio s/n Sevilla Spain.
authors.forename: Jorge
authors.initials: J
authors.lastname: Doña
authors.affiliation: Department of Evolutionary Ecology Estación Biológica de Doñana (CSIC) Avda. Americo Vespucio s/n Sevilla Spain.
authors.forename: Marina
authors.initials: M
authors.lastname: Moreno-García
authors.affiliation: Department of Biology Texas A&M University 3258 TAMU College Station Texas 77843.
authors.forename: Charles D
authors.initials: CD
authors.lastname: Criscione
authors.affiliation: Department of Conservation Biology Estación Biológica de Doñana (CSIC) Avda Americo Vespucio s/n Sevilla Spain.
authors.forename: David
authors.initials: D
authors.lastname: Serrano
authors.affiliation: Department of Evolutionary Ecology Estación Biológica de Doñana (CSIC) Avda. Americo Vespucio s/n Sevilla Spain.
authors.forename: Roger
authors.initials: R
authors.lastname: Jovani
keywords: COI; demography; feather mites; genetic diversity; host‐parasite interactions; mtDNA
references.citation: Exp Appl Acarol. 2015 Oct;67(2):209-18
references.pmid: 26139533
references.citation: Genetics. 1989 Nov;123(3):585-95
references.pmid: 2513255
references.citation: Trends Parasitol. 2005 Oct;21(10):469-75
references.pmid: 16112615
references.citation: Exp Appl Acarol. 2015 Feb;65(2):163-79
references.pmid: 25342243
references.citation: Trends Parasitol. 2005 May;21(5):212-7
references.pmid: 15837609
references.citation: Mol Ecol. 2010 Nov;19(22):4852-62
references.pmid: 20849560
references.citation: Mol Phylogenet Evol. 2010 Jul;56(1):222-41
references.pmid: 20060051
references.citation: Proc Natl Acad Sci U S A. 2002 Dec 10;99(25):16122-7
references.pmid: 12451181
references.citation: Evolution. 2005 Nov;59(11):2333-42
references.pmid: 16396174
references.citation: Nat Rev Genet. 2011 Oct 04;12(11):756-66
references.pmid: 21969038
references.citation: Int J Parasitol. 2007 Mar;37(3-4):359-64
references.pmid: 17196596
references.citation: PLoS Biol. 2012;10(9):e1001388
references.pmid: 22984349
references.citation: Int J Parasitol. 1990 Feb;20(1):11-29
references.pmid: 2179149
references.citation: PLoS One. 2014 Sep 12;9(9):e107341
references.pmid: 25216248
references.citation: Mol Ecol Resour. 2015 Sep;15(5):1216-25
references.pmid: 25655349
references.citation: Mol Ecol. 2005 Jul;14(8):2247-57
references.pmid: 15969711
references.citation: Bioinformatics. 2010 Feb 1;26(3):419-20
references.pmid: 20080509
references.citation: Mol Ecol. 2006 Jan;15(1):161-71
references.pmid: 16367838
references.citation: Mol Biol Evol. 2013 Dec;30(12):2725-9
references.pmid: 24132122
references.citation: Mol Phylogenet Evol. 2011 Feb;58(2):365-73
references.pmid: 21167948
references.citation: Nucleic Acids Res. 2004 Mar 19;32(5):1792-7
references.pmid: 15034147
references.citation: Biotechniques. 2000 Jul;29(1):52, 54
references.pmid: 10907076
references.citation: Parasitology. 2011 Nov;138(13):1750-9
references.pmid: 21554840
references.citation: Nature. 2014 Nov 13;515(7526):261-3
references.pmid: 25141177
references.citation: Heredity (Edinb). 2012 Jul;109(1):50-6
references.pmid: 22434013
references.citation: Proc Biol Sci. 2014 Dec 22;281(1797):null
references.pmid: 25355471
references.citation: Proc Natl Acad Sci U S A. 2006 Jul 25;103(30):11211-6
references.pmid: 16844774
references.citation: Nature. 1999 Oct 28;401(6756):877-84
references.pmid: 10553904
references.citation: J Parasitol. 1997 Aug;83(4):575-83
references.pmid: 9267395
references.citation: Trends Ecol Evol. 2001 Jul 1;16(7):358-364
references.pmid: 11403868
references.citation: Am Nat. 2002 Dec;160(6):712-26
references.pmid: 18707460
references.citation: J Evol Biol. 2008 Jan;21(1):133-44
references.pmid: 18028353
references.citation: BMC Evol Biol. 2011 Oct 03;11:284
references.pmid: 21966954
references.citation: Proc Biol Sci. 2015 Jan 22;282(1799):20142476
references.pmid: 25621335
references.citation: Mol Biol Evol. 2002 Dec;19(12):2092-100
references.pmid: 12446801
references.citation: Heredity (Edinb). 1999 Sep;83 ( Pt 3):253-9
references.pmid: 10504422
references.citation: Annu Rev Entomol. 2003;48:185-209
references.pmid: 12208818