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Volume 2018, Article ID 3059017, 5 pages
Research Article

Occurrence of Interspecific Mating between Two Species of Danaus Kluk, 1780 (Lepidoptera: Nymphalidae) in Nature

1Nature Mates-Nature Club, 6/7 Bijoygarh Road, Kolkata, West Bengal 700032, India
2National Centre for Biological Sciences, Tata Institute of Fundamental Research, Bellary Road, Bangalore, Karnataka 560065, India
3SASTRA University, Thanjavur, Tamil Nadu, India
4Presidency University, 86/1 College Street, Kolkata, West Bengal 700073, India

Correspondence should be addressed to Sarika Baidya; moc.liamg@mn.nukub

Received 30 November 2017; Accepted 28 February 2018; Published 1 April 2018

Academic Editor: Anna-Karin Borg-Karlson

Copyright © 2018 Sarika Baidya et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Mating across species occurs rarely in nature, which contends prevalent idea of biological species concept. Throughout species range, mating pattern varies and reproductive barriers are also not fixed among different species. In this study, two instances of interspecific mating between two widely common Nymphalid Tiger butterflies (Danaus Kluk, 1780) in Indian region are reported. Observations imply lack of absolute reproductive barriers, where possible interplay exists among prezygotic and postzygotic isolating factors compensating each other in order to restrain interspecific hybridization.