, 109:219 | Cite as

Karyotypic analysis of the cotton boll weevil, Anthonomus grandis Boheman

  • L.R. McNally
  • M.L. Beck
  • C.J. Biggers


The diploid chromosome number of the cotton boll weevil, Anthonomus grandis Boheman, is 44. Both C‐ and N‐banding techniques of mitotic cells demonstrated constitutive heterochromatin in the p arm of the eight largest chromosomes, the p arm of the X chromosome, and the centromeric region of autosomal groups A–D. Neither the y nor the group E autosomes appeared to contain constitutive heterochromatin. Supernumerary chromosomes were not found in the boll weevil. Restriction endonuclease banding of primary spermatocytes revealed a rod‐shaped Xy tetrad in which the X and y were terminally associated. The p arm of the large, submetacentric X was C‐band positive. While two of the autosomal tetrads were typically ring‐shaped in primary spermatocytes, the remaining 19 autosomal tetrads were rod‐shaped.

Anthonomus grandis C‐banding Coleoptera cotton boll weevil N‐banding restriction enzyme banding 


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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • L.R. McNally
    • 1
  • M.L. Beck
    • 1
  • C.J. Biggers
    • 1
  1. 1.Department of BiologyUniversity of MemphisMemphisUSA

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