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Invasion of an exotic fish_common carp, Cyprinus carpio L. (Actinopterygii: Cypriniformes: Cyprinidae) in the Ganga River, India and its impacts
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Invasion of an exotic fish_common carp, Cyprinus carpio L. (Actinopterygii: Cypriniformes: Cyprinidae) in the Ganga River, India and its impacts
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Invasion of an exotic fish_common carp, Cyprinus carpio L. (Actinopterygii: Cypriniformes: Cyprinidae) in the Ganga River, India and its impacts
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Journal Article
Invasion of an exotic fish_common carp, Cyprinus carpio L. (Actinopterygii: Cypriniformes: Cyprinidae) in the Ganga River, India and its impacts
2010
Overview
Cyprinus carpio introduced about sixty years ago for aquaculture has now been found to invade into the Ganga River (India), the largest river of the country contributing significantly to the fishery. The abundance index of C. carpio ranged from 12.2% to 45.5 % in 250 km long river stretch of the Ganga River flowing along Kanpur to Varanasi in the state of Uttar Pradesh. The gut content analysis revealed the presence of Eichhornia (9.8%), Pistia (11.6%), Nymphaea (8.5%), annelids worms (7.8%), algae (20.2%), mud and detritus (14.8%). The calculated diet breadth ranged from 0.82% to 0.91%; food richness ranged from 12 to 16, and the gut repletion index (GRI%) was 100% at different sampling sites. Presence of spent, ripe, and mature females was recorded. Abundance of exotic fish primarily C. carpio and Oreochromis niloticus in the fishery of the Ganga River was observed. The dominant catch of exotic fishes negatively impacted on the important indigenous fishes particularly Indian major carps (Catla catla,Labeo rohita,and Cirrhinus mrigala)
Publisher
West Pomeranian University of Technology
Subject
/ GANGE
/ http://www.fao.org/aos/agrovoc#c_1384
/ http://www.fao.org/aos/agrovoc#c_24116
/ http://www.fao.org/aos/agrovoc#c_2922
/ http://www.fao.org/aos/agrovoc#c_29732
/ http://www.fao.org/aos/agrovoc#c_3022
/ http://www.fao.org/aos/agrovoc#c_33949
/ http://www.fao.org/aos/agrovoc#c_35268
/ http://www.fao.org/aos/agrovoc#c_36301
/ http://www.fao.org/aos/agrovoc#c_3825
/ http://www.fao.org/aos/agrovoc#c_423
/ http://www.fao.org/aos/agrovoc#c_4656
/ http://www.fao.org/aos/agrovoc#c_6615
/ INDE
/ INDIA
/ MADUREZ
/ MATURITE
/ MATURITY
