Livestock trade history, geography, and parasite strains:: The mitochondrial genetic structure of Echinococcus granulosus in Argentina

被引:42
作者
Haag, KL [1 ]
Ayala, FJ [1 ]
Kamenetzky, L [1 ]
Gutierrez, AM [1 ]
Rosenzvit, M [1 ]
机构
[1] Univ Fed Rio Grande Sul, Dept Genet, BR-91501970 Porto Alegre, RS, Brazil
关键词
D O I
10.1645/GE-173R
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
A sample of 114 isolates of Echinococcus granulosus (Cestoda: Taeniidae) collected from different host species and sites in Argentina has been sequenced for 391 bp from the mitochondrial cytochrome c oxidase subunit I gene to analyze genetic variability and population structure. Nine different haplotypes were identified, 5 of which correspond to already characterized strains. Analysis of molecular variance and nested clade analysis of the distribution of haplotypes among localities within 3 main geographic regions indicate that geographic differentiation accounts for the overall pattern of genetic variability in E. granulosus populations. Significant geographic differentiation is also present when the sheep strain alone is considered. Our results suggest that geographic patterns are not due to actual restricted gene flow between regions but are rather a consequence of past history, probably related to the time and origin of livestock introduction in Argentina.
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页码:234 / 239
页数:6
相关论文
共 28 条
  • [1] Life cycle variation and the genetic structure of nematode populations
    Blouin, MS
    Liu, J
    Berry, RE
    [J]. HEREDITY, 1999, 83 (3) : 253 - 259
  • [2] BLOUIN MS, 1995, GENETICS, V141, P1007
  • [3] A MOLECULAR PHYLOGENY OF THE GENUS ECHINOCOCCUS
    BOWLES, J
    BLAIR, D
    MCMANUS, DP
    [J]. PARASITOLOGY, 1995, 110 : 317 - 328
  • [4] GENETIC-VARIANTS WITHIN THE GENUS ECHINOCOCCUS IDENTIFIED BY MITOCHONDRIAL-DNA SEQUENCING
    BOWLES, J
    BLAIR, D
    MCMANUS, DP
    [J]. MOLECULAR AND BIOCHEMICAL PARASITOLOGY, 1992, 54 (02) : 165 - 174
  • [5] TRANSMISSION DYNAMICS OF ECHINOCOCCUS-GRANULOSUS, TAENIA-HYDATIGENA AND TAENIA-OVIS IN SHEEP IN URUGUAY
    CABRERA, PA
    HARAN, G
    BENAVIDEZ, U
    VALLEDOR, S
    PERERA, G
    LLOYD, S
    GEMMELL, MA
    BARAIBAR, M
    MORANA, A
    MAISSONAVE, J
    CARBALLO, M
    [J]. INTERNATIONAL JOURNAL FOR PARASITOLOGY, 1995, 25 (07) : 807 - 813
  • [6] Clement M, 2001, TCS ESTIMATING GENE
  • [7] Multiple interspecies transmissions of human and simian T-cell leukemia/lymphoma virus type I sequences
    Crandall, KA
    [J]. MOLECULAR BIOLOGY AND EVOLUTION, 1996, 13 (01) : 115 - 131
  • [8] Dybdahl MF, 1996, EVOLUTION, V50, P2264, DOI [10.2307/2410696, 10.1111/j.1558-5646.1996.tb03615.x]
  • [9] Intraspecific variation of Echinococcus granulosus and related species with emphasis on their infectivity to humans
    Eckert, J
    Thompson, RCA
    [J]. ACTA TROPICA, 1997, 64 (1-2) : 19 - 34
  • [10] Echinococcosis: an emerging or re-emerging zoonosis?
    Eckert, J
    Conraths, FJ
    Tackmann, K
    [J]. INTERNATIONAL JOURNAL FOR PARASITOLOGY, 2000, 30 (12-13) : 1283 - 1294