Morphological discrepancies of three Garra (Teleostei: Cyprinidae) in Arunachal Pradesh, India- a possible evolutionary process

Authors

  • Bungdon Shangningam
     Wildlife & GIS Section, Zoological Survey of India, Prani Vigyan Bhawan, Kolkata-700053
  • Shibananda Rath
    Freshwater Fish Section, Zoological Survey of India, 27 JL Nehru Road, Kolkata-700016
  • Asha Kiran Tudu
    Freshwater Fish Section, Zoological Survey of India, 27 JL Nehru Road, Kolkata-700016
  • Laishram Kosygin
    Freshwater Fish Section, Zoological Survey of India, 27 JL Nehru Road, Kolkata-700016

DOI:

https://doi.org/10.26515/rzsi/v123/i2S/2023/172514

Keywords:

Pisces, Cypriniformes, Garra, Variations, Brahmaputra drainage.

Abstract

The present study appraises the discrepancies patterns of morphometry for the first time on the three species of <i>Garra. Garra arunachalensis, G. birostris, and G. quadratirostris</i> were collected from various locations of the Siang River in Arunachal Pradesh, India. The results of the morphological analysis revealed that <i>G. arunachalensis, G. birostris</i>, and <i>G. quadratirostris</i> hold many similar characteristics compared to the type species, which confirms its speciation. However, they parade distinct variations in morphological and meristic characters which indicate genetic variation as time lapsed. Certain morphometric characters overlapped. Hence the variations in many morphometric characters point towards a possible continuous evolutionary process. Details of the morphological discrepancies of the three species and possible hypotheses of climatic, geographical, and habitat changes are discussed.

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Published

2023-07-01

How to Cite

Shangningam, B., Rath , S., Kiran Tudu , A., & Kosygin , L. (2023). Morphological discrepancies of three <i>Garra</i> (Teleostei: Cyprinidae) in Arunachal Pradesh, India- a possible evolutionary process. Records of the Zoological Survey of India, 123(2S), 177–184. https://doi.org/10.26515/rzsi/v123/i2S/2023/172514

Issue

Volume 123, Issue 2S, Special Issue 2023

Section

Articles
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