Status of cell division, cytogenetical index, and chromosome details on the immature stage of Trichogramma brassicae (Hymenoptera: Trichogrammatidae)

Abstract

Investigation of various tissues of immature stages Trichogramma brassicae Bezdenko (Hymenoptera: Trichogrammatidae) from Iran was examined in an attempt to determine its cell division. In addition, the Metaphase plate of the wasp is evaluated to elucidate its chromosome feature and asymmetry/ symmetry karyotype. We found that: 1) Brain tissue of prepupa and early hours of the pupa stage are the highest mitotic index (%) and metaphase index, 2) The number of haploid chromosomes of the wasp is n = 5, and 3) The karyotype of the wasp is almost symmetrical.

Keywords

• chromosome
• mitotic index
• t. brassicae
• brain tissue