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Morphometric, Meristic Characteristics and Conservation of the Threatened Fish, Puntius Sarana (hamilton, 1822) (cyprinidae) in the Ganges River, Northwestern Bangladesh

Md. Yeamin Hossain*
Kagoshima University, United Graduate School of Agricultural Sciences, 1-21-24 Korimoto, Kagoshima 890-0065, Japan.

Jun Ohtomi
Kagoshima University, Faculty of Fisheries, 4-20-50 Shimoarata, Kagoshima 890-0056, Japan.

Zoarder Faruque Ahmed
Bangladesh Agricultural University, Faculty of Fisheries, Mymensingh 2202, Bangladesh.

Abstract/ Executive Summary:

The present study aims to describe the morphometric, meristic characteristics and threatening factors for the critically endangered species Puntius sarana (Hamilton, 1822) in the lower part of Ganges River, northwestern Bangladesh. A total of 87 specimens ranging from 9.30-21.70 mm TL (total length) and 10.05-189.25 g body weight (BW) were used for the studies of the morphometric and meristic characteristics. The necessary data and information were collected through the interview or survey on >120 fishers and >80 fish farmers from March 2006 to December 2007. The results indicated that the populations are declining due to over-exploitation, pollution and environmental degradation, the spread of disease, the uncontrolled introduction of exotic fish, and lack of proper management. This study also suggested the measures for the conservation of the remnant isolated population of P. sarana in the Ganges River and nearby areas.

Keywords: Puntius sarana, Critically endangered species, Conservation, Bangladesh.

Location: The Ganges River, Northwestern Bangladesh

Start Date:

End Date:

Program Area: Conservation and Biodiversity

Commodity: Fish

Objectives:

The objective of the present study is to describe the morphometric and meristic characteristics and identify the main factors that threaten the species P. sarana and making suggestions for its conservation strategies for the protection of the remnant isolated populations in the lower part of Ganges River and nearby areas.

Methodology:

Samples of P. sarana were collected from the fisherman catch landed at the Rajshahi city, Rajshahi, Bangladesh from March 2006 to December 2007. This fish were caught by means of the traditional fishing gears jhaki jal (cast net), and dughair (conical trap) (Kibria and Ahmed, 2005). The specimens were transferred to the Department of Fisheries, University of Rajshahi (Bangladesh), where all morphometric and meristic characteristics were examined according to Froese and Pauly (2007). Specimens were measured with digital slide callipers up to the nearest 0.1 cm and weighed with an electric balance up to the nearest 0.1 g. Further, the necessary data and information for this study were collected through the survey on the fishers (120), fish farmers (80), fish traders (30), Government and NGO personnel and experienced persons related to fisheries sectors, and available literature.

Source of Information: Turkish Journal of Fisheries and Aquatic Sciences 9: 223-225 (2009)

Article Link (Online Journal): DOI: 10.4194/trjfas.2009.0215

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The survey indicated that the species populations are declining due to a combination of overexploitation, environmental degradation, natural disasters, pesticide and aquatic pollution, spread of disease, the uncontrolled introduction of exotic fishes, destruction of breeding grounds, excessive water abstraction, siltation, various ecological changes in its natural habit, and lack of proper management. Mijkherjee et al. (2002) and Chakraborty et al. (2006) also recorded similar results. However, Welcomme (1998) reported that indiscriminate introductions of aquatic organisms from one habitat into another represent a significant threat to aquatic biodiversity. More recently, concerns have been raised about the threat to wild endemic fish populations from large scale induced breeding operations, inappropriate artificial reproduction practices and the large scale stocking of domesticated, genetically degraded fingerlings in floodplains, and large scale escapes of cultured stocks due to flooding (Rajits et al., 2002).

Knowledge Management: Journal