KARYOLOGY OF MALE AND FEMALE PSEUDOAGRION RUBRICEPS (ZYGOPTERA : COENAGRIONIDAE)

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Published: 1999-01-02

Page: 1-5


R. SANDHU *

Department of Zoology, Punjabi University, Patiala -147 002, India

G. K. WALIA *

Department of Zoology, Punjabi University, Patiala -147 002, India

*Author to whom correspondence should be addressed.


Abstract

Chromosomal analysis has been carried out on male and female individuals of Pseudoagrion rubriceps collected from the states of Jammu and Kashmir, Punjab, Assam and Meghalaya in India. Majority of mitotic and meiotic stages possess the diploid numbers 27 males and 28 in females with XO - XX Sex determining mechanism. The autosomes include a tiny pair of m chromosome in both sexes. Numerous plates showing autosomal fragmentations in different meiotic stages of the same individual have been observed. In these, diploid numbers vary from 27 to more than 45. Female karyotype and autosomal fragmentations have been reported for the first time in this damselfly.

 

 

Keywords: Holokinetic chromosome, Autosomal fragmentations, Diploid number, Haploid number


How to Cite

SANDHU, R., & WALIA, G. K. (1999). KARYOLOGY OF MALE AND FEMALE PSEUDOAGRION RUBRICEPS (ZYGOPTERA : COENAGRIONIDAE). BIONATURE, 19(1), 1–5. Retrieved from https://globalpresshub.com/index.php/BN/article/view/342

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