Home / Advanced Search

  • Title/Keywords

  • Author/Affliations

  • Journal

  • Article Type

  • Start Year

  • End Year

Update SearchingClear
  • Articles
  • Online
Search Results (1)
  • Open Access

    ARTICLE

    An ultrastructural study of spermiogenesis in two species of Sitophilus (Coleoptera: Curculionidae)

    KHESLLER PATRÍCIA OLÁZIA NAME, GIULIANO PAGY FELIPE DOS REIS, SÔNIA NAIR BÁO

    BIOCELL, Vol.31, No.2, pp. 229-236, 2007, DOI:10.32604/biocell.2007.31.229

    Abstract The spermiogenesis of Sitophilus zeamais and Sitophilus oryzae, the maize and the rice weevil, respectively, was studied by light microscopy and scanning and transmission electron microscopy. Sitophilus spp. is the most widespread and destructive primary pest of stored cereals in the world. The spermiogenesis occurs within cysts. There are approximately 256 germ line cells per cyst. Inside each cysts, all the spermatids are in the same stage of maturation. The ultrastructure of the spermatozoa of S. zeamais and S. oryzae is similar to that described for other beetles. The head is formed by a three-layered acrosome with the perforatorium, the More >

Displaying 1-10 on page 1 of 1. Per Page