Population genetic structure of the lettuce root aphid, Pemphigus bursarius (L.), in relation to geographic distance, gene flow and host plant usage

被引:45
作者
Miller, NJ [1 ]
Birley, AJ
Overall, ADJ
Tatchell, GM
机构
[1] Hort Res Int, Warwick CV35 9EF, England
[2] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
[3] Queensland Inst Med Res, Bancroft Ctr, Brisbane, Qld 4006, Australia
[4] Univ Edinburgh, Inst Cell Anim & Populat Biol, Edinburgh EH9 3JT, Midlothian, Scotland
基金
英国生物技术与生命科学研究理事会;
关键词
Pemphigus bursarius; population structure; microsatellite; host plant;
D O I
10.1038/sj.hdy.6800331
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Microsatellite markers were used to examine the population structure of Pemphigus bursarius, a cyclically parthenogenetic aphid. Substantial allele frequency differences were observed between populations on the primary host plant ( collected shortly after sexual reproduction) separated by distances as low as 14 km. This suggested that migratory movements occur over relatively short distances in this species. However, the degree of allele frequency divergence between populations was not correlated with their geographical separation, indicating that isolation by distance was not the sole cause of spatial genetic structuring. Significant excesses of homozygotes were observed in several populations. Substantial allele frequency differences were also found between aphids on the primary host and those sampled from a secondary host plant after several parthenogenetic generations at the same location in two successive years. This could have been due to the existence of obligately parthenogenetic lineages living on the secondary host or genetically divergent populations confined to different secondary host plant species but sharing a common primary host.
引用
收藏
页码:217 / 223
页数:7
相关论文
共 43 条
[11]  
JOHNSON PCD, 2000, THESIS U CAMBRIDGE
[12]   Migration and genetic structure of the grain aphid (Sitobion avenae) in Britain related to climate and clonal fluctuation as revealed using microsatellites [J].
Llewellyn, KS ;
Loxdale, HD ;
Harrington, R ;
Brookes, CP ;
Clark, SJ ;
Sunnucks, P .
MOLECULAR ECOLOGY, 2003, 12 (01) :21-34
[13]   THE RELATIVE IMPORTANCE OF SHORT-RANGE AND LONG-RANGE MOVEMENT OF FLYING APHIDS [J].
LOXDALE, HD ;
HARDIE, J ;
HALBERT, S ;
FOOTTIT, R ;
KIDD, NAC ;
CARTER, CI .
BIOLOGICAL REVIEWS, 1993, 68 (02) :291-311
[14]   TEMPORAL GENETIC STABILITY WITHIN AND RESTRICTED MIGRATION (GENE FLOW) BETWEEN LOCAL-POPULATIONS OF THE BLACKBERRY-GRAIN APHID SITOBION-FRAGARIAE IN SOUTH-EAST ENGLAND [J].
LOXDALE, HD ;
BROOKES, CP .
JOURNAL OF ANIMAL ECOLOGY, 1990, 59 (02) :497-514
[15]  
Loxdale Hugh D., 2001, Symposia of the Royal Entomological Society of London, V20, P361, DOI 10.1079/9780851994567.0361
[16]   Host-based genotype variation in insects revisited [J].
Lushai, G ;
Markovitch, O ;
Loxdale, HD .
BULLETIN OF ENTOMOLOGICAL RESEARCH, 2002, 92 (02) :159-164
[17]   Polymorphic microsatellite loci from the lettuce root aphid, Pemphigus bursarius [J].
Miller, NJ ;
Birley, AJ ;
Tatchell, GM .
MOLECULAR ECOLOGY, 2000, 9 (11) :1951-1952
[19]  
MORAN NA, 1992, ANNU REV ENTOMOL, V37, P321, DOI 10.1146/annurev.en.37.010192.001541
[20]   A method for distinguishing consanguinity and population substructure using multilocus genotype data [J].
Overall, ADJ ;
Nichols, RA .
MOLECULAR BIOLOGY AND EVOLUTION, 2001, 18 (11) :2048-2056