Karyotype variations in Italian populations of the peach-potato aphid Myzus persicae (Hemiptera: Aphididae)

M. Rivi, V. Monti, Emanuele Mazzoni, S. Cassanelli, Michela Panini, D. Bizzaro, M. Mandrioli, G. C. Manicardi

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11 Citazioni (Scopus)


In this study, we present cytogenetic data regarding 66 Myzus persicae strains collected in different regions of Italy. Together with the most common 2n=12 karyotype, the results showed different chromosomal rearrangements: 2n=12 with A1–3 reciprocal translocation, 2n=13 with A1–3 reciprocal translocation and A3 fission, 2n=13 with A3 fission, 2n=13 with A4 fission, 2n=14 with X and A3 fissions. A 2n=12–13 chromosomal mosaicism has also been observed. Chromosomal aberrations (and in particular all strains showing A1–3 reciprocal translocation) are especially frequent in strains collected on tobacco plants, and we suggest that a clastogenic effect of nicotine, further benefited by the holocentric nature of aphid chromosomes, could be at the basis of the observed phenomenon.
Lingua originaleEnglish
pagine (da-a)663-671
Numero di pagine9
RivistaBulletin of Entomological Research
Stato di pubblicazionePubblicato - 2012


  • Aphididae
  • Myzus persicae
  • chromosomal rearrangements
  • clastogenic effect
  • karyotype variations


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