A New Record of Reduced Chromosome Number in Tenebrionidae (Coleoptera)

Year 2023, , 86 - 89, 30.06.2023

Dirim Şendoğan

https://doi.org/10.31594/commagene.1296294

Abstract

The karyological features of Akis subtricostata was determined for the first time with conventional and silver nitrate staining. The diploid number 2n=16 and meioformula 7+neoXY represents a deviation from the modal karyotype of Coleoptera. The pericentromeric heterochromatin was detected with both Giemsa and silver nitrate staining. In addition to determining a single possible NOR on prophase I nuclei, AgNO3 revealed that several telomeric regions of mitotic metaphase chromosomes were slightly more argyrophilic.

Keywords

Karyotype, NOR, neoXY, Akis subtricostata, heterochromatin

Tenebrionidae’de (Coleoptera) İndirgenmiş Kromozom Sayısına Yeni Bir Kayıt

Abstract

Akis subtricostata'nın karyolojik özellikleri geleneksel ve gümüş nitrat boyama ile ilk kez belirlenmiştir. 2n=16 diploid sayısı ve 7+neoXY formülü, Coleoptera takımının model karyotipinden bir sapma temsil etmektedir. Perisentromerik heterokromatin hem Giemsa hem de gümüş nitrat boyamaları saptanmıştır. Profaz I nukleuslarında olası tek bir NOR belirlemenin yanı sıra, AgNO3 birkaç mitotik metafaz kromozomunun telomerik bölgelerinin biraz daha arjirofilik olduğunu ortaya çıkartmıştır.

Keywords

Karyotip, NOR, neoXY, Akis subtricostata, heterokromatin

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