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Karyotype of Acanthocephalus lucii: the first record of supernumerary chromosomes in thorny-headed worms

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Abstract.

The karyotype of Acanthocephalus lucii (Müller, 1776), a parasite of perch, consists of six autosomal biarmed chromosomes and two subtelocentric sex X chromosomes in females or one X in males. The sex determining mechanism is of the XX-X0 type. Most of the acanthocephalans (85%) exhibit small supernumerary metacentric B chromosomes, the number of which varies from one to five. Our data represent the first record of B chromosomes in thorny-headed worms. A possible relationship between the occurrence of B chromosomes and a heavy metal accumulation in acanthocephalan tissue from contaminated aquatic environments is briefly discussed.

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Authors and Affiliations

  1. Parasitological Institute, Slovak Academy of Sciences, Hlinkova 3, 04001 Košice, Slovak Republic, , , , ,

    M. Špakulová,  I. Kráľová-Hromadová &  V. Dudiňák

  2. Kakatiya University, Warangal 506 009 (A.P.), India, , , , ,

    P. Reddy

Authors
  1. M. Špakulová
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  2. I. Kráľová-Hromadová
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  3. V. Dudiňák
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  4. P. Reddy
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Špakulová, .M., Kráľová-Hromadová, .I., Dudiňák, .V. et al. Karyotype of Acanthocephalus lucii: the first record of supernumerary chromosomes in thorny-headed worms. Parasitol Res 88, 778–780 (2002). https://doi.org/10.1007/s00436-002-0639-y

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  • DOI: https://doi.org/10.1007/s00436-002-0639-y

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