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VOL. 10, ISSUE 5 (2025)
Karyotypic Analysis of Oniticellus cinctus (Coleoptera: Scarabaeidae: Scarabaeinae) from Kurukshetra, Haryana, India
Authors
Paramjeet Kaur
Abstract
This research investigated the chromosomal
structure and dynamics of Oniticellus cinctus, a species from the
Scarabaeinae subfamily within the Scarabaeidae family. The analysis utilized
traditional Giemsa staining for morphological characterization, silver staining
to detect nucleolar organizer regions (NORs), and C-banding to visualize
constitutive heterochromatin. The karyotype analysis revealed a modal
chromosome number of 2n=20 and a meioformula of 9AA+Xyp. Consistent with the
typical characteristics of the Scarabaeinae subfamily, the chromosomes of Oniticellus
cinctus revealed primarily metacentric and submetacentric. Silver staining
indicated dense spots during the early pachytene stage of prophase I,
corresponding to nucleolar organizer regions. The findings also explored a
strong association between the chiasma frequency and terminalization
coefficient in Oniticellus cinctus and other members of the Scarabaeinae
subfamily. Overall, the study highlighted the conservative nature of this
subfamily and emphasized the significance of chromosomal structure, centromere
position, heterochromatin distribution, and NOR localization in understanding
evolutionary relationships among beetles and other insects.
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Pages:67-69
How to cite this article:
Paramjeet Kaur "Karyotypic Analysis of <i>Oniticellus cinctus</i> (Coleoptera: Scarabaeidae: Scarabaeinae) from Kurukshetra, Haryana, India". International Journal of Entomology Research, Vol 10, Issue 5, 2025, Pages 67-69
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