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Diversity of Indigenous Fish Species in Konoskhaihaor, Northeast Bangladesh

Mohammed Mahbub Iqbal
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Mehedi Hasan Kanon
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Mohammad Amzad Hossain
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Abul Hossain
Department of Marine Science and Fisheries, Noakhali Science and Technology University, Noakhali, Bangladesh

Shamima Nasren
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Md. Jahidul Islam
Department of Aquatic Resource Management, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Md. Arifur Rahman
Department of Fish Biology and Genetics, Sylhet Agricultural University, Sylhet-3100, Bangladesh

Abstract/ Executive Summary:

The present study was executed to assess the indigenous fish assemblage of Konoskhaihaor for 9 months from May 2014 to January 2015. The Konoskhaihaor area covers 104.50 acres of land containing 6 small to large beels. In the monsoon the haor remains under water. A total of 37 fish species belonging to 7 orders including prawns were identified. Among the 37 species 5 were vulnerable, 7 endangered, 1 critically endangered, 3 exotic, 20 not threatened and 1 not evaluated according to IUCN, Bangladesh, 2000. The Shannon-Weaver diversity index was found highest (3.12) in June and lowest (2.9) in January. Margalef richness index was found highest (3.02) in July and lowest (2.70) in December. On the other hand, Pielou’s evenness index was lowest (0.82) in three successive months i.e., in October, November and January and highest (0.88) in April. The fish species of Konoskhaihaor found to be evenly distributed. Simpson dominance index were found to be highest (0.94) in April and lowest (0.91) in January. The diversity indices only evenness index was found to be significant (<0.05) among the months. It revealed from the survey that 8 indigenous species which were previously available but not found for 3 to 12 years in the study area. As 5 vulnerable, 7 endangered and 1 critically endangered fish species were available in the study area that is why it is needed to be conserved these species in situ to keep for the use of future generation.

Keywords: Konoskhaihaor, Indigenous fish species, Biodiversity, Northeast Bangladesh

Location: Sunamganj district, Sylhet

Start Date: 00-05-2014

End Date: 00-01-2015

Program Area: Resource Development and Management

Commodity: Fish

Objectives:

To assess the indigenous fish assemblage of Konoskhai haor.

Methodology:

Study area: The research was accomplished in Dowarabazar upazila, under Sunamganj district, Sylhet, Bangladesh. It is located at 25.0500°N and 91.5667°E. The total area 281.4 km² and bounded by Meghalaya State of India and boarder on the north, and Chattak upazilla on the south and east, Sunamgonj district on the west. Its main rivers are Surma, Jadukata etc. Sampling: Frequent field visits (2-3 times in a month) were made during the time of study period. Data collection program was done at fishing grounds and fish landing centers in respect of the types and amount of indigenous fish species harvested at each field visit and types of fishing gears used to catch them in the Konoskhai haor. During the field survey, different areas of the haor, harvesting spots and few market spots were visited to delineate the veritable population configuration. Diversity analysis: In the present study, diversity of fish species were evaluated by dint of Shannon-Weaver index (H′), species richness by Margalef index (d), evenness by Pielou’s index (J′), and dominance by Simpson index. Statistical analysis: A one way analysis of variance (ANOVA) in SPSS was used to test the significant difference in diversity indices among the months. For ANOVA test SPSS software V15.0 (Statistical Package for Social Sciences) was used. All the multivariate analyses were performed by the software PRIMER V6 (Plymouth Routines Multivariate Ecological Research)

Source of Information: Punjab Univ. J. Zool., Vol. 30 (2), pp. 073-079, 2015 ISSN 1016-1597 (Print)

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It is revealed from the survey that 8 indigenous species which were previously available but not found for 3 to 12 years in the study area. As 5 vulnerable, 7 endangered and 1 critically endangered fish species were available in the study area that is why it is needed to be conserved these species in situ to keep for the use of future generation.

Knowledge Management: Journal