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VOL. 6, ISSUE 2 (2021)
First cytogenetic report on four species of family libellulidae (Odonata: Anisoptera) from India
Authors
Gurinder Kaur Walia, Hardeep Singh
Abstract
Chromosome complement of Cratilla lineata, Hylaeothemis apicalis, Orthetrum chrysis and Zygonix irix of family Libellulidae has been studied by conventional staining, C-banding, silver nitrate staining and sequence specific staining. Among these, Cratilla lineata, Orthetrum chrysis and Zygonix irix possess 2n (♂) = 25 as the chromosome number, while Hylaeothemis apicalis reveals 2n (♂) =23, which is originated by the fusion of X chromosome with an autosome pair as X chromosome is the largest element in the complement. Terminal C-bands and terminal NOR’s are present on the autosomal bivalents, while X chromosome is entirely C-positive and NOR-positive in all the species, whereas m bivalent shows variation in distribution of C-heterochromatin and NOR’s. Similarly, autosomal bivalents and X chromosome show more DAPI bright signal than CMA3, while m bivalent possesses variation in AT-GC region specificity. Cytogenetically, all these species has been studied for the first time in the world.
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Pages:223-227
How to cite this article:
Gurinder Kaur Walia, Hardeep Singh "First cytogenetic report on four species of family libellulidae (Odonata: Anisoptera) from India ". International Journal of Entomology Research, Vol 6, Issue 2, 2021, Pages 223-227
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