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Fin fish assemblage and biodiversity status of carps on halda river, Bangladesh

Publication Date - 2015-11-26 00:00:00

Publication Title : Fin fish assemblage and biodiversity status of carps on halda river, Bangladesh

Publicationed By : Md Arifur Rahman

Publication Publication Date : 2015-11-26 00:00:00

Publication Online Link : https://www.researchgate.net/publication/290604352_Fin_fish_assemblage_and_biodiversity_status_of_carps_on_halda_river_Bangladesh

Publication Description :

Fin fish assemblage and biodiversity status of carps on halda river, Bangladesh

 

Ferdous Mst Jannatul, Karim Md Rashidul, Hossain Mohammad Amzad, Rahman Md Arifur and Iqbal* Mohammed Mahbub.

 

ABSTRACT

 

The Halda River is the only natural spawning ground of Indian major carp species. A twelve months long study was conducted from July 2013 to June 2014 in Halda River at Garduara point in Chittagong districts of Bangladesh. Sampling was done during full and new moon for two successive days in each month. A total of 53 fish species belonging to 18 families were identified. However, the concerning fact was carp species r at Garduara point and 15 species were identified. Among them 5 were Not Threatened (NT), 2 Vulnerable (VU), 5 Endangered (EN) and 3 Exotic (EX). The Shannon-Weaver diversity index (H') ranged from 1.72 (in July) to 2.13 (in January), tiniest Margalef richness index was witnessed in November/December (1.05), while utmost value observed in July (1.22), peak mean evenness value (0.79) was encountered in January and bottommost (0.63) in July and the uppermost mean dominance value (0.85) was observed in January and lowest (0.7) in July. The Shannon-Weaver and Pielou’s index was found to be significant among the seasons at 0.05% significance level, while the Margalef and Simpson index was not significant among the seasons. The carp species at Garduara point found to be not evenly distributed. Among the Indian major carps encountered in the study area, Catla catla found to be comprised 4.78% of the total biomass followed by Cirrhinus cirrhosus 5.74%, Labeo rohita 4.95% and Labeo calbasu 0.66%.

 

Keywords: Halda River, Carp species, Biodiversity, Garduara point.



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