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Impacts of invasive fishes on fishery dynamics of the Yamuna river, India .

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Title Impacts of invasive fishes on fishery dynamics of the Yamuna river, India .
Not Available
 
Creator Atul K. Singh
Abubakar Ansari
Sharad C. Srivastava
Pankaj Verma
A. K. Pathak
 
Subject Alien Invasive Fishes,
Invasion
Fish Yield
Local Fish Diversity
Invasion Coefficient Index
Yamuna River
 
Description Not Available
Invasion, spread and predominance of alien invasive fishes were studied in 950-km-long stretch of
the Yamuna River. The fish yield ranged between 32 t/km/yr to 240 t/km/yr and the catch of alien
invasive fishes dominated over local fishes in the fishery, which was over 96% at Etawah. The calculated
Invasion Coefficient Index (Ixi) of alien invasive fishes was in the range of 0.12 to 0.31 indicating
a major loss to the local fish diversity. The calculated Pearson’s correlation coefficient
was found to have positive correlation of 0.757 and 0.710 for common carp and tilapia respectively
with locally captured Indian major carps (IMC). The results of this study highlighted how unintentional
spread of alien invasive fishes due to rapid aquaculture diversification and intensification
has invaded into the Yamuna River causing severe loss to the local fishery. The invasion of alien
fishes has been mapped for the Yamuna River at different locations using GIS tools. The results of
this study invite attention on the management and sustainability of the local fishery and ecosystem
health of the river.
Biodiversity Board, Lucknow ,Uttar Pradesh State.
 
Date 2017-07-05T10:20:02Z
2017-07-05T10:20:02Z
2014-08
 
Type Research Paper
 
Identifier Singh, A.K., Ansari, A., Srivastava, S.C., Verma, P. and Pathak, A.K. (2014) Impacts of Invasive Fishes on Fishery Dynamics of the Yamuna River, India. Agricultural Sciences, 5, 813-821.
Print: 2156-8553
Online: 2156-8561
http://krishi.icar.gov.in/jspui/handle/123456789/4608
 
Language English
 
Relation Not Available;
 
Publisher Scientific Research