title: Long distance dispersal of zooplankton endemic to isolated mountaintops--an example of an ecological process operating on an evolutionary time scale.
abstract: Recent findings suggest a convergence of time scales between ecological and evolutionary processes which is usually explained in terms of rapid micro evolution resulting in evolution on ecological time scales. A similar convergence, however, can also emerge when slow ecological processes take place on evolutionary time scales. A good example of such a slow ecological process is the colonization of remote aquatic habitats by passively dispersed zooplankton. Using variation at the protein coding mitochondrial COI gene, we investigated the balance between mutation and migration as drivers of genetic diversity in two Branchipodopsis fairy shrimp species (Crustacea, Anostraca) endemic to remote temporary rock pool clusters at the summit of isolated mountaintops in central South Africa. We showed that both species colonized the region almost simultaneously c. 0.8 My ago, but exhibit contrasting patterns of regional genetic diversity and demographic history. The haplotype network of the common B. cf. wolfi showed clear evidence of 11 long distance dispersal events (up to 140 km) with five haplotypes that are shared among distant inselbergs, as well as some more spatially isolated derivates. Similar patterns were not observed for B. drakensbergensis presumably since this rarer species experienced a genetic bottleneck. We conclude that the observed genetic patterns reflect rare historic colonization events rather than frequent ongoing gene flow. Moreover, the high regional haplotype diversity combined with a high degree of haplotype endemicity indicates that evolutionary- (mutation) and ecological (migration) processes in this system operate on similar time scales.
authors.affiliation: Laboratory of Aquatic Ecology and Evolutionary Biology, Katholieke Universiteit Leuven, Leuven, Belgium. bram.vanschoenwinkel@bio.kuleuven.be
authors.forename: Bram
authors.initials: B
authors.lastname: Vanschoenwinkel
authors.forename: Joachim
authors.initials: J
authors.lastname: Mergeay
authors.forename: Tom
authors.initials: T
authors.lastname: Pinceel
authors.forename: Aline
authors.initials: A
authors.lastname: Waterkeyn
authors.forename: Hanne
authors.initials: H
authors.lastname: Vandewaerde
authors.forename: Maitland
authors.initials: M
authors.lastname: Seaman
authors.forename: Luc
authors.initials: L
authors.lastname: Brendonck
mesh_terms: D000818:Animals; D033202:Anostraca / Q000235:genetics*; D005075:Biological Evolution; D004272:DNA, Mitochondrial / Q000235:genetics; D004463:Ecology; D003576:Electron Transport Complex IV / Q000235:genetics*; D004641:Emigration and Immigration; D051456:Gene Flow; D005819:Genetic Markers / Q000235:genetics; D014644:Genetic Variation; D005843:Geography; D006239:Haplotypes / Q000235:genetics; D008957:Models, Genetic; D009154:Mutation / Q000235:genetics; D015048:Zooplankton / Q000502:physiology*
chemical_list: D004272:DNA, Mitochondrial; D005819:Genetic Markers; D003576:Electron Transport Complex IV
references.citation: Methods Mol Biol. 2000;132:365-86
references.pmid: 10547847
references.citation: Ecology. 2006 Jul;87(7):1616-26
references.pmid: 16922313
references.citation: Trends Ecol Evol. 2008 Nov;23(11):638-47
references.pmid: 18823680
references.citation: Trends Ecol Evol. 2008 Jun;23(6):311-7
references.pmid: 18439707
references.citation: BMC Evol Biol. 2007 Sep 13;7:161
references.pmid: 17854482
references.citation: Mol Ecol. 2008 Jul;17(13):3160-77
references.pmid: 18510585
references.citation: Biol Lett. 2008 Oct 23;4(5):494-6
references.pmid: 18628115
references.citation: Evol Bioinform Online. 2007 Feb 23;1:47-50
references.pmid: 19325852
references.citation: Mol Ecol. 2008 Apr;17(7):1789-800
references.pmid: 18284570
references.citation: Oecologia. 2000 Jun;123(4):506-515
references.pmid: 28308759
references.citation: Mol Ecol. 2000 Oct;9(10):1657-9
references.pmid: 11050560
references.citation: Am Nat. 2005 Feb;165(2):274-80
references.pmid: 15729656
references.citation: Mol Ecol Resour. 2009 May;9(3):767-70
references.pmid: 21564739
references.citation: Evolution. 1993 Feb;47(1):264-279
references.pmid: 28568097
references.citation: Trends Ecol Evol. 2008 Jan;23(1):38-44
references.pmid: 18006185
references.citation: Mol Biol Evol. 1999 Jan;16(1):37-48
references.pmid: 10331250
references.citation: Genetics. 1997 Oct;147(2):915-25
references.pmid: 9335623
references.citation: Mol Biol Evol. 1992 May;9(3):552-69
references.pmid: 1316531
references.citation: Heredity (Edinb). 1999 Apr;82 Pt 4:451-61
references.pmid: 10383664
references.citation: Mol Ecol. 2007 Apr;16(7):1533-44
references.pmid: 17391274
references.citation: Science. 2006 Aug 11;313(5788):786-8
references.pmid: 16902126
references.citation: Proc Natl Acad Sci U S A. 1994 Jul 5;91(14):6491-5
references.pmid: 8022810
references.citation: Genetics. 1992 Jun;131(2):479-91
references.pmid: 1644282
references.citation: Cancer Res. 1967 Feb;27(2):209-20
references.pmid: 6018555
references.citation: Science. 2004 Jan 16;303(5656):356-9
references.pmid: 14726588
references.citation: BMC Genet. 2005 Mar 11;6:13
references.pmid: 15760479
references.citation: Mol Mar Biol Biotechnol. 1994 Oct;3(5):294-9
references.pmid: 7881515
references.citation: PLoS One. 2010 Aug 04;5(8):e11932
references.pmid: 20694140