International Journal of Fisheries and Aquatic Studies
2018, Vol. 6, Issue 2, Part E
Diversity and conservation status of Ichthyofauna in the river Jaldhaka, West BengalAuthor(s):
Tapan Sarkar and Joydeb PalAbstract:
The river Jaldhaka is a glacier feed torrential river and originates from Bitang lake in Sikkim. This river is famous for cold water as well as warm water fishes. A study was carried out from March 2014 to February 2016 to assess the Ichthyofauna density and diversity indices in the river Jaldhaka. A total of 119 fish species belongs to 10 order, 29 families and 72 genera were recorded. Monthly variation of Catch per unit effort (CPUE), number of ichthyofauna genera, Shannon-Wiener diversity index (H'), evenness index (J'), Margalef’s richness index and dominance index was varied from 38 to 115, 30 to 67, 3.34 to 4.13, 0.927 to 0.988, 7.97 to 13.74 and 0.016to 0.034 respectively over the study period. Catch per unit effort (CPUE), number of ichthyofauna genera, Shannon-Wiener diversity index (H') and Margalef’s richness index were recorded maximum during monsoon season. Out of 119 fish species 19 Endangered, 44 vulnerable species, 17 low risks near threatened and 4 low risks least concern fishes were recorded.Pages: 339-345 | 362 Views 22 DownloadsDownload Full Article:
How to cite this article:
Tapan Sarkar and Joydeb Pal. Diversity and conservation status of Ichthyofauna in the river Jaldhaka, West Bengal. International Journal of Fisheries and Aquatic Studies. 2018; 6(2): 339-345.