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Diversity of Ichthyofauna of Feni and Muhuri Rivers, Feni, Bangladesh

Sumana Yeasmin
Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh

Gulshan Ara Latifa
Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh

Gawsia Wahidunnessa Chowdhury
Department of Zoology, University of Dhaka, Dhaka-1000, Bangladesh

Abstract/ Executive Summary:

Diversity of ichthyofauna of Feni and Muhuri rivers was studied from April, 2015 to March 2016. The selected rivers were surveyed to cover the wet season (April 2015-September 2015) and the dry season (October 2015-March 2016). A total of 65 freshwater fish species belonging to 11 orders, 29 families were recorded from the two rivers. Of the 65 species, 12 species were threatened, and one species was identified as data deficient according to IUCN Bangladesh. Perciformes was recorded as most dominating order (19 species, among the 54 species recorded) in Feni river, whereas the Cypriniformes was recorded as the dominating order (17 species among the 42 species recorded from this river) in Muhuri river. Corica soborna was the most common species with the highest number of individuals in comparison to other fish species recorded from two rivers in both wet and dry seasons. Calculating the Shannon-Weiner and Simpson’s indices of diversity and species evenness, highest number of species and individuals were found in the wet season while minimum in the dry season from both the rivers

Keywords: Ichthyofauna, Feni River, Muhuri River, status, IUCN

Location: The study was conducted in the Feni river (upazila - Feni Sadar; village - Shibpur, Kalibari, Jelepara) and Muhuri River (upazila - Chhagalnaiya; village - Sonapur, Jelepara) of Feni district

Start Date: 00-04-2015

End Date: 00-03-2016

Program Area: Conservation and Biodiversity

Commodity: Aquatic animal

Objectives:

The objectives of the present study were to find out the diversity, seasonal abundance and conservation status of ichthyofauna of the two rivers. The findings of this study also intended to form a baseline for long term research and effective conservation management action plan for the threatened freshwater fish species.

Methodology:

The study was conducted in the Feni river (upazila - Feni Sadar; village - Shibpur, Kalibari, Jelepara) and Muhuri River (upazila - Chhagalnaiya; village - Sonapur, Jelepara) of Feni district. The Muhuri river is the upper tributary of the Feni, a major river in Bangladesh which meets the Sandweep channel at south-west region. From both rivers, three sites were selected for survey as per the discussion with the knowledgeable fishermen of the selected areas. The selected sites that lie in three different locations of Feni and Muhuri Rivers are: (1) Muhuri project of the Feni river in Sonapur village of Chhagalnaiya upazila which lies 22º50′08.9′′ N to 91º27′17.8′′ E latitude and longitude respectively; (2) Muhuri river where it meets with the Feni river in Alokdia of Feni Sadar upazilla which lies 22º54′42.4′′ N to 91º30′ 09.9′′ E; and (3) Lemua bridge of Muhuri river which lies 22º55′03.6′′ to 91º28′34.0′′ latitude and longitude, respectively. Data collection, taxonomic identification: Samples were collected through regular visits to fishing as well as landing centres and the fish markets adjacent to the selected areas. Primary data were collected by observing the fish catch of the fishermen, followed by the structured questionnaire interviews, focus group discussion (FGD) and cross-checked interviews. Some voucher specimens were collected for further clarification. Fishermen, fish traders and fish farmers were also consulted. Specimens were identified using the keys of Hamilton (1822), Siddique et al. (2007), Rahman et al. (2009), IUCN Red List (2015), etc. Data analyses: There were several steps like data processing and tabulating of data, Statistical and mathematical analysis. The diversity indices were calculated

Source of Information: Bangladesh J. Zool. 45(1): 47-60, 2017 ISSN: 0304-9027 (print) 2408-8455 (online)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Current study observed that the Feni river estuary has high species diversity and it is higher in the estuarine mouth compared to that of upper stream direction. Species diversity observed in Feni and Muhuri rivers and geographical location was identified as the one of the reasons. Feni river is close to the estuarine mouth of the Bay of Bengal and Muhuri river comes from the upper stream of Belonia, India. Estuaries are the most productive ecosystem. For that reason Feni River represented a great icthyodiversity. The number of order, families and species of fish recorded in this study represented that Feni and Muhuri rivers of Feni district, under the greater Noakhali can be considered as one of the rich and diverse resources. The ichthyodiversity of these two rivers can be considered as one of the significant contributions to both the national economy and protein demand for Bangladesh.

Knowledge Management: Journal