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  • 1
    Electronic Resource
    Electronic Resource
    Mitochondrial DNA variation in geographic populations of Colorado potato beetle,Leptinotarsa decemlineata (Coleoptera; Chrysomelidae) (1991)
    Springer
    Cellular and molecular life sciences 47 (1991), S. 483-485 
    Details
    ISSN: 1420-9071
    Keywords: Mitochondrial DNA ; RFLP ; Leptinotarsa decemlineata ; Colorado potato beetle ; population genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary This study demonstrates variability in restriction enzyme cleavage sites of mitochondrial DNA (mtDNA) among four popalations of Colorado potato beetle (CPB). A suite of three enzymes (EcoRI,HpaI,PstI) was sufficient to discriminate among the populations tested. Individuals heteroplasmic for restriction enzyme patterns were found in some populations. Variability in CPB mtDNA should prove useful in efforts to trace the origin and dispersal of the species in North America.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959950
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Geographic populations of the medfly may be differentiated by mitochondrial DNA variation (1992)
    Springer
    Cellular and molecular life sciences 48 (1992), S. 1010-1013 
    Details
    ISSN: 1420-9071
    Keywords: Mediterranean fruit fly ; Ceratitis capitata ; mitochondrial DNA ; colonization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Restriction enzyme cleavage sites of mitochondrial DNA (mtDNA) from the Mediterranean fruit fly were found to vary among introduced populations in the Neotropics. The survey included samples from 15 established natural populations and 5 laboratory cultures from Hawaii, Central America, South America and West Africa and samples from recent California infestations (1989, 1991). Based on restriction fragment length polymorphisms from 2 enzymes, Hawaii is an unlikely source for the 1989 and 1991 California infestations. Interpopulational variation in mtDNA demonstrates the potential for the technique to trace the process of colonization (geographic spread) by this insect.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01919155
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Mitochondrial DNA evidence for the 19th century introduction of African honey bees into the United States (1993)
    Springer
    Cellular and molecular life sciences 49 (1993), S. 530-532 
    Details
    ISSN: 1420-9071
    Keywords: Honey bee ; Apis mellifera ; mitochondrial DNA ; colonization ; subspecies ; population genetics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Since the introduction of an African subspecies into Brazil in the mid-1950's1, descendent ‘Africanized’ honey bees (Apis mellifera L.) have spread throughout the Neotropics and into temperate North America. Restriction enzyme analysis of 422 feral honey bee colonies collected from non-Africanized areas in the southern United States revealed that over 21% of them had mitochondrial DNA (mtDNA) derived from a European race established in North America by the 17th century, 77% of them had mtDNA common in honey bees maintained by beekeepers and about 1% exhibited African mtDNA. Further analysis revealed that the African mtDNA was derived from a north African subspecies imported to the US in the 19th century.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01955156
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Intraspecific mitochondrial DNA variation in the Colorado potato beetle,Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) (1996)
    Springer
    Biochemical genetics 34 (1996), S. 253-268 
    Details
    ISSN: 1573-4927
    Keywords: Leptinotarsa decemlineata ; Colorado potato beetle ; mitochondrial DNA ; genetic variation ; heteroplasmy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Restriction endonuclease analyses of mitochondrial DNA (mtDNA) were used to examine genetic variability and population structure inLeptinotarsa decemlineata (Say). A group of three enzymes, EcoRI, HpaI, and PstI, was used to reveal polymorphism both within and among some of the 10 populations tested, yielding 16 haplotypes in combination. The frequencies of these 16 haplotypes differed significantly across geographic regions, indicating some partitioning of mtDNA haplotypes. Estimates of mtDNA sequence divergence (δ) between haplotypes ranged from 0.016 to 0.135%, suggesting local differentiation of mtDNA in some populations. Analysis of these data suggests that Texas was colonized by more than one mtDNA lineage, most likely originating in Mexico. We hypothesize that a larger founder size for the initial introductions or high levels of variability in the parent population at the edge of the CPB expanding range led to the initial partitioning of haplotypes observed in samples from Texas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553899
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Intraspecific mitochondrial DNA variation in the Colorado potato beetle,Leptinotarsa decemlineata (Coleoptera: Chrysomelidae) (1996)
    Springer
    Biochemical genetics 34 (1996), S. 253-268 
    Details
    ISSN: 1573-4927
    Keywords: Leptinotarsa decemlineata ; Colorado potato beetle ; mitochondrial DNA ; genetic variation ; heteroplasmy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Restriction endonuclease analyses of mitochondrial DNA (mtDNA) were used to examine genetic variability and population structure inLeptinotarsa decemlineata (Say). A group of three enzymes, EcoRI, HpaI, and PstI, was used to reveal polymorphism both within and among some of the 10 populations tested, yielding 16 haplotypes in combination. The frequencies of these 16 haplotypes differed significantly across geographic regions, indicating some partitioning of mtDNA haplotypes. Estimates of mtDNA sequence divergence (δ) between haplotypes ranged from 0.016 to 0.135%, suggesting local differentiation of mtDNA in some populations. Analysis of these data suggests that Texas was colonized by more than one mtDNA lineage, most likely originating in Mexico. We hypothesize that a larger founder size for the initial introductions or high levels of variability in the parent population at the edge of the CPB expanding range led to the initial partitioning of haplotypes observed in samples from Texas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02399946
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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