title: Discrepancy in the degree of population differentiation between color-morph frequencies and neutral genetic loci in the damselfly Ischnura senegalensis in Okinawa Island, Japan.
abstract: Evaluation of relative contribution of natural selection and stochastic processes to population differentiation has been of great interest in evolutionary biology. In a damselfly, Ischnura senegalensis, females show color dimorphism (gynochrome vs. androchrome), and color-morph frequencies are known to greatly vary among local populations within Okinawa Island, a small island of Ryukyu Archipelago, Japan. In this study, to examine the effects of natural selection and stochastic processes on the within-island variation in color-morph frequencies, we compared the degree of population differentiation at the color-morph locus with that at a mitochondrial DNA region and ten nuclear microsatellite loci. F ST values at the neutral loci were close to zero, indicating presence of sufficient gene flow (dispersal of adult individuals) between the local populations. In contrast, F ST values at the color-morph locus were significantly different from zero. These results suggest that variation in female color-morph frequencies observed among local populations in Okinawa Island has been caused by divergent selection acting on the phenotype and/or genes tightly linked with the color locus.
authors: Department of Environmental Science, International College of Arts and Sciences, Fukuoka Women's University, 1-1-1 Kasumigaoka, Higashi-ku, Fukuoka, 813-8529, Japan, inomata@fwu.ac.jp.
authors: Nobuyuki
authors: N
authors: Inomata
authors: Kumiko
authors: K
authors: Hironaka
authors: Kouji
authors: K
authors: Sawada
authors: Takashi
authors: T
authors: Kuriwada
authors: Kazunori
authors: K
authors: Yamahira
mesh_terms: D000818:Animals; D005075:Biological Evolution; D004272:DNA, Mitochondrial / Q000235:genetics; D005260:Female; D051456:Gene Flow; D056426:Genetic Loci; D005828:Genetics, Population; D005838:Genotype; D062312:Islands; D007564:Japan; D008297:Male; D018895:Microsatellite Repeats; D063191:Odonata / Q000235:genetics*; D010641:Phenotype; D010858:Pigmentation / Q000235:genetics*; D012641:Selection, Genetic; D017422:Sequence Analysis, DNA
chemical_list: D004272:DNA, Mitochondrial
references: Heredity (Edinb). 2011 Dec;107(6):513-22
references: 21587304
references: Genetics. 2003 Aug;164(4):1567-87
references: 12930761
references: Genetics. 2000 Jun;155(2):945-59
references: 10835412
references: Evolution. 2000 Dec;54(6):2156-61
references: 11209791
references: Heredity (Edinb). 2014 Apr;112(4):391-8
references: 24281546
references: Genetics. 1964 Mar;49(3):513-9
references: 17248202
references: Evolution. 2010 Dec;64(12):3620-8
references: 20629729
references: Genomics. 1995 Dec 10;30(3):450-8
references: 8825630
references: Bioinformatics. 2012 Oct 1;28(19):2537-9
references: 22820204
references: Mol Ecol Resour. 2009 Sep;9(5):1322-32
references: 21564903
references: Mol Ecol. 2005 Jul;14(8):2611-20
references: 15969739
references: Mol Ecol. 2008 Mar;17(6):1597-604
references: 18284565
references: Heredity (Edinb). 1999 Apr;82 (Pt 3):328-35
references: 10336708
references: Bioinformatics. 2009 Jun 1;25(11):1451-2
references: 19346325
references: PLoS One. 2011;6(5):e20440
references: 21655216
references: Am Nat. 2010 Nov;176(5):566-72
references: 20860526
references: BMC Evol Biol. 2011 Sep 14;11:256
references: 21917171
references: Evolution. 1984 Nov;38(6):1358-1370
references: 28563791
references: Bioinformatics. 2007 Nov 1;23(21):2947-8
references: 17846036
references: Evolution. 1998 Jun;52(3):775-783
references: 28565234
references: Mol Ecol Resour. 2010 May;10(3):564-7
references: 21565059