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Arthropods, 2021, 10(4): 130-139
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Article

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

Fatemeh Farsi, Jamasb Nozari
Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran

Received 23 February 2021;Accepted 30 March 2021;Published 1 December 2021
IAEES

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.

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