Abstract
One of the major objectives of research on invasive species is to determine the relative importance of different evolutionary and ecological forces in the invasion process. It was recently suggested that post-introduction intraspecific hybridization between previously isolated genotypes could produce novel and/or heterotic progeny that might express enhanced invasiveness. We tested this hypothesis with Silene latifolia, a European native that has successfully invaded North America and has previously been shown to have undergone genetic change since its introduction. In a common garden experiment we compared the performance of plants derived from within and between population crosses from eight European and 18 North American populations. Results showed that there was no significant effect of crossing distance on progeny phenotype. Furthermore, progeny from within or between population crosses did not differ in size, reproductive output or survival. Collectively, these results suggest that the invasive phenotype of S. latifolia is likely the result of natural selection and/or genetic drift rather than intraspecific hybridization.
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References
Arnold ML (1997) Natural hybridization and evolution. Oxford S. Eco, Evo
Arnold ML, Bulger MR, Burke JM et al (1999) Natural hybridization: how low can you go and still be important? Ecology 80:371–381
Barrett SCH (2000) Microevolutionary influences of global change on plant invasions. In: Mooney HA, Hobbs RK (eds) The impact of global change on invasive species. Covelo, California
Blair AC, Wolfe LM (2004) The evolution of an invasive plant: an experimental study with Silene latifolia. Ecology 85:3035–3042
Blossey B, Notzold R (1995) Evolution of increased competitive ability in invasive nonindigenous plants— a hypothesis. J Ecol 83:887–889
Broyles SB, Wyatt R (1991) Effective pollen dispersal in a natural-population of Asclepias exaltata—the influence of pollinator behavior, genetic similarity, and mating success. Am Nat 138:1239–1249
Burke JM, Arnold ML (2001) Genetics and the fitness of hybrids. Ann Rev Genet 35:31–52
Cox GW (2004) Alien species and evolution: the evolutionary ecology of exotic plants, animals, microbes, and interacting native species. Washington, DC
Crawley MJ (1987) The population biology of invaders. Phil Trans Roy Soc Lond B 314:711–731
Eckert CG, Manicacci D, Barrett SCH (1996) Genetic drift and founder effect in native versus introduced populations of an invading plant, Lythrum salicaria (Lythraceae). Evolution 50:1512–1519
Edmands S (1999) Heterosis and outbreeding depression in interpopulation crosses spanning a wide range of divergence. Evolution 53:1757–1768
Edmands S, Feaman HV, Harrison JS et al (2005) Genetic consequences of many generations of hybridization between divergent copepod populations. J Hered 96:114–123
Ellstrand NC, Schierenbeck KA (2000) Hybridization as a stimulus for the evolution of invasiveness in plants? Proc Nat Acad Sci 97:7043–7050
Facon B, Jarne P, Pointier JP et al (2005) Hybridization and invasiveness in the freshwater snail Melanoides tuberculata: hybrid vigour is more important than increase in genetic structure. J Evol Biol 18:524–535
Fenster CB, Galloway LF (2000) Inbreeding and outbreeding depression in natural populations of Chamaecrista fasciculata (Fabaceae): consequences for conservation biology. Con Biol 14:1406–1412
Galloway LF, Etterson JR (2005) Population differentiation and hybrid success in Campanula americana: geography and genome size. J Evol Biol 18:81–89
Gaskin JF, Schaal BA (2002) Hybrid Tamarix widespread in US invasion and undetected in native Asian range. Proc Nat Acad Sci 99:11256–11259
Hardner CM, Potts BM, Gore PL (1998) The relationship between cross success and spatial proximity of Eucalyptus globulus ssp. globulus parents. Evolution 52:614–618
Irwin RE (2001) Field and allozyme studies investigating optimal mating success in two sympatric spring-ephemeral plants, Trillium erectum and T. grandiflorum. Heredity 87:178–189
Keller M, Kollmann J, Edwards PJ (2000) Genetic introgression from distant provenances reduces fitness in local weed populations. J Appl Ecol 37:647–659
Kliber A, Eckert CG (2005) Interaction between founder effect and selection during biological invasion in an aquatic plant. Evolution 59:1900–1913
Kolbe J, Glor R, Schettino L et al (2004) Genetic variation increases during biological invasion by a Cuban lizard. Nature 431:177–181
Lande R (1988) Genetics and demography in biological conservation. Science 241:1455–1460
Lee CE (2002) Evolutionary genetics of invasive species. TREE 17:386–391
Leger EA, Rice KJ (2003) Invasive California poppies (Eschscholzia californica Cham.) grow larger than native individuals under reduced competition. Ecol Lett 6:257–264
Lynch M (1991) The genetic interpretation of inbreeding depression and outbreeding depression. Evolution 45:622–629
McNeil J (1977) The biology of Canadian weeds. Can J Bot 57:1103–1114
Nolte AW, Freyhof J, Stemshorn KC et al (2005) An invasive lineage of sculpins, Cottus sp (Pisces, Teleostei) in the Rhine with new habitat adaptations has originated from hybridization between old phylogeographic groups. Proc Roy Soc 272:2379–2387
Novak SJ, Mack RN (2005) Genetic bottlenecks in alien plant species: influence of mating systems and introduction dynamics. In: Sax DF, Stachowicz JJ, Gaines SD (eds) Species invasions: insights into ecology, evolution, and biogeography. Sunderland, MA
Price MV, Waser NM (1989) Pollen dispersal and optimal outcrossing in Delphinium nelsoni. Nature 277:294–297
Rieseberg LH, Raymond O, Rosenthal DM et al (2003) Major ecological transitions in annual sunflowers facilitated by hybridization. Science 301:1211–1216
Rigney LP, Thomson JD, Cruzan MB et al (1993) Differential success of pollen donors in a self-compatible lily. Evolution 47:915–924
Sakai AK, Allendorf FW, Holt JS et al (2001) The population biology of invasive species. Ann Rev Ecol Sys 32:305–332
Schierenbeck K, Symonds V, Gallagher K et al (2005) Genetic variation and phylogeographic analyses of two species of Carpobrotus and their hybrids in California. Mol Ecol 14:539–547
Seehausen O (2004) Hybridization and adaptive radiation. TREE 19:198–207
Siemann E, Rogers WE (2003) Reduced resistance of invasive varieties of the alien tree Sapium sebiferum to a generalist herbivore. Oecologia 135:451–457
Souto CP, Aizen MA, Premoli AC (2002) Effects of crossing distance and genetic relatedness on pollen performance in Alstroemeria aurea (Alstroemeriaceae). Am J Bot 89:427–432
Stacey EA (2001) Cross-fertility in two tropical tree species: evidence of inbreeding depression within populations and genetic divergence among populations. Am J Bot 88:1041–1051
Stebbins GL (1959) The role of hybridization in evolution. Proc Am Phil Soc 103:231–251
Taylor DR, Keller SR (2006) Historical range expansion influences the genetics of two contemporary species invasions. Evolution (in press)
Tsutsui ND, Suarez AV, Holway DA et al (2000) Reduced genetic variation and the success of an invasive species. Proc Nat Acad Sci 97:5948–5953
USDA-ARS (1965) Report Agricultural Research Service. USDA, Washington, DC
Vila M, D’Antonio CM (1998) Fitness of invasive Carpobrotus (Aizoaceae) hybrids in coastal California. Ecoscience 5:191–199
Waser NM, Price MV (1989) Optimal outcrossing in Ipomopsis aggregata—seed set and offspring fitness. Evolution 43:1097–1109
Wolfe LM (2002) Why alien invaders succeed: support for the escape-from-enemy hypothesis. Am Nat 160:705–711
Wolfe LM, Elzinga JA, Biere A (2004) Increased susceptibility to enemies following introduction in the invasive plant Silene latifolia. Ecol Lett 7:813–820
Acknowledgements
We thank J. Antonovics, J. Burns, G. Greenwood, M. Hood, J. Partain, D. Sowell and D. Taylor for help with field work; University of Virginia’s Mountain Lake Biological Station for providing research space and facilities, D. Baker for help with GIS; R. Chandler for statistical advice, and J. Antonovics, K. Burgess, R. Hufbauer, S. Keller, and two anonymous reviewers for discussion and/or for providing comments on an earlier draft of the manuscript. This study was supported by grants from National Science Foundation (DEB 0349553) and United States Department of Agriculture (Weedy and Invasive Species) to L.M.W.
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Wolfe, L.M., Blair, A.C. & Penna, B.M. Does intraspecific hybridization contribute to the evolution of invasiveness?: an experimental test. Biol Invasions 9, 515–521 (2007). https://doi.org/10.1007/s10530-006-9046-0
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DOI: https://doi.org/10.1007/s10530-006-9046-0