alexa Persistence and Structure of the Fish Assemblage from the Ganga River (Kanpur to Varanasi section), India | OMICS International | Abstract
ISSN: 2167-0587

Journal of Geography & Natural Disasters
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Research Article

Persistence and Structure of the Fish Assemblage from the Ganga River (Kanpur to Varanasi section), India

Dwivedi AC1*, Mishra AS2, Mayank P1and Tiwari A1

1Regional Centre, Central Inland Fisheries Research Institute (ICAR), 24 Panna Lal Road Allahabad 211002, India

2Department of Zoology, Nehru Gram Bharti University, Allahabad, India

*Corresponding Author:
Dwivedi AC
Regional Centre
Central Inland Fisheries Research Institute (ICAR)
24 Panna Lal Road Allahabad 211002, India
Tel: +91- 9450211911
E-mail: [email protected]

Received Date: December 21, 2015; Accepted Date: February 06, 2016; Published Date: February 08, 2016

Citation: Dwivedi AC, Mishra AS, Mayank P, Tiwari A (2016) Persistence and Structure of the Fish Assemblage from the Ganga River (Kanpur to Varanasi section), India. J Geogr Nat Disast 6: 159. doi:10.4172/2167-0587.1000159

Copyright: © 2016 Dwivedi AC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Fish assemblages are an important component of aquatic ecosystems. Present investigation was undertaken to study the Persistence, structure and abundance of fishes from the Ganga river (site 1: Kanpur, site 2: Allahabad and site, 3: Varanasi section), India. The Ganga river is a back bone of Indian fishery. The samples were collected monthly during the period June 2011 to May 2013. Canonical correspondence analysis (CCA) indicated that axis 1 and 2 accounted for 67% and 33% variance for species and environmental relation, respectively. Structure of the fish assemblage of the Ganga at Kanupr to Varanasi harbors of 102 fish species belong to 8 orders and 28 families. 74, 89 and 82 fish species were recorded at Kanpur, Allahabad and Varanasi sites, respectively. Cypriniformes and Cyprinidae were the most rich fish species order and family in all sites. At total stretch, Cypriniformes order was shared 49 species, followed by Siluriformes 26 species and Perciformes 17 species. Orders Clupeiformes shared 5 species. Abundance was dominated by Eutropiichthys vacha compared to Clupisoma garua and Sperata seenghala. According to abundance, Cyprinus carpio var. communis (9.64%) and Oreochromis niloticus (9.19%) were powerfully invader in the Ganga river. Exotic species is alarming for indigenous species biodiversity. C. carpio var. communis and O. niloticus are frequently recorded in the Ganga river. Total hardness, alkalinity and dissolved oxygen were responsible for the presence of Catla catla, Rita rita and Sperata aor, while Labeo calbasu, Cyprinus carpio and Cirrhinus mrigala preferred nitrate, phosphate and total dissolved solid for their abundance. Oreochromis niloticus preferred high biological oxygen demand and lead while Zn and Sulphate were responsible for abundance of L. rohita. For conservation point of view C. carpio var. communis and O. niloticus species should be monitored in the Ganga river. Both species are very harmful for fish biodiversity in the Ganga river. Fish assemblage and their abundance know the health of ecosystem.

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