Seasonal Abundance and Distribution of Freshwater Snails in Different Beels of Gopalganj District, Bangladesh

Md. Shariful Islam *

Bangladesh Fisheries Research Institute, Shrimp Research Station, Bagerhat-9300, Bangladesh.

A. S. M. Tanbirul Haque

Bangladesh Fisheries Research Institute, Shrimp Research Station, Bagerhat-9300, Bangladesh.

Nilufa Begum

Bangladesh Fisheries Research Institute, Shrimp Research Station, Bagerhat-9300, Bangladesh.

A. F. M. Shofiquzzoha

Bangladesh Fisheries Research Institute, Shrimp Research Station, Bagerhat-9300, Bangladesh.

Khan Kamal Uddin Ahmed

Bangladesh Fisheries Research Institute, Mymensingh-2201, Bangladesh.

*Author to whom correspondence should be addressed.


In Bangladesh, there are thousands of beels (a natural deep depression) exist in different sizes. Most of these large beels have become shrunken quite considerably in recent decades. Those beels are the potential source of snails. Gopalganj district of Bangladesh has lots of beels from where people collect huge amount of Mollusca species from the time immemorial. At present, the abundance is decreasing drastically due to uncontrolled catch. The seasonal abundance and distribution of Mollusca species in selected beel areas has been studied to know the real scenario. Surveys was conducted at summer (May-June), rain (September-October) and winter (December-January) season year round based on the observations and sampling in each six points (each of 16m2 area per point) of a beel, As such six selected beels in each Upazila of Gopalganj district have been considered under study. Sampling was done with the help of Sieves (0.2 mm, 2.0 mm and 4.75 mm), Cast nets, small hand nets and hand-picking methods and count. In this study, five snail species were found throughout the survey period where Lomba shamuk (Lymnaea stagnalis) was exhibited the highest in number than others. The highest average number (600 no/16m2) of snail was found in Gopalganj sadar Upazila at rainy season and the species comprised of only lomba shamuk. In case of Chakti shamuk (Macrochlamys indica), the highest average number (519 no/16m2) was also found in Gopalganj sadar upazila at the same period. The abundance of average number of Ghecho shamuk (Lymnaea luteola) was found low for all studied Upazila and this species was totally absent in Muksudpur. These findings may help the concern authority to take proper decisions on meaningful steps. Ultimately these findings may help the nature from the extinction of Mollusca species.

Keywords: Beel, mollusc, abundance, distribution, Gopalganj

How to Cite

Islam , Md. Shariful, A. S. M. Tanbirul Haque, Nilufa Begum, A. F. M. Shofiquzzoha, and Khan Kamal Uddin Ahmed. 2023. “Seasonal Abundance and Distribution of Freshwater Snails in Different Beels of Gopalganj District, Bangladesh”. Asian Journal of Fisheries and Aquatic Research 25 (3):1-11.


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Islam MS, Suravi, Meghla NT. Investigation on water quality in the Ashulia beel, Dhaka; Bangladesh Journal of Fisheries Research. 2010;14(1-2):55-64.

Idowu RT, Gadzama UN, Abbatoir A, Inyang NM. Molluscan Population of an African Arid Zone Lake; Animal Research International. 2007;4(2):680–684.

Siddiqui KU, Islam MA, Kabir SMH, Ahmad ATA, Rahman AKA, Haque EU, Ahmad ZU, Begum ZNT, Hassan MA, Khondker M, Rahman MM. (Eds.) Encyclopedia of flora and fauna of Bangladesh, Mollusks. Asiatic Society of Bangladesh, Dhaka. 2007; 17:415.

Abbot TR. Compendium of land snails. American Malacologists, Inc., Melbourne, Florida, USA. 1989;1-240.

Hapman AD. Numbers of living species in Australia and the world. 2nd edition. Australian Biological Resources Study, Canberra; 2009.

Bouchet P. The future of the western Palaearctic mollusc fauna: From scientific evaluation to conservation. Contributions to Palaearctic Malacology, Heldia. 1997;4(5):13-18.

Baillie J, Hilton Taylor C, Stuart SN. (Eds.). IUCN red list of threatened species: A global species assessment; 2004.

Lydeard C, Cowie RH, Ponder WF, Bogan AE, Bouchet P, Clark SA, Thompson FG. The global decline of non-marine mollusks. Bio Science. 2004;54(4):321-330.

Sharma KK, Bangotra K, Saini M. Diversity and distribution of mollusca in relation to the physico-chemical profile of Ghomanhasan Stream, Jammu (Jk). International Journal of Biodiversity And Conservation. 2013;5(4):240-249.

Kumar R, Maansi A, Wats M. Abundance and ecological relationships of Physa acuta in freshwater bodies of chandigarh (U.T), India And Its Surrounding Areas. Advance Research Journal Of Multidisciplinary Discoveries. 2018;23.0, C-4: 21-26.

Saha BK. Ecology and bio-eonomics of the freshwater edible snails of Bangladesh. PhD dissertation. Rajshahi University, Bangladesh. 1998;162.

Baby RL, Hasan I, Kabir KA, Naser MN. Nutrient analysis of some commercially important molluscs of Bangladesh. J. Sci. Res. 2010;2(2):390-396.

DoF. National Fish Week Compilation. Department of Fisheries (DoF), Ministry of Fisheries & Livestock, Dhaka, Bangladesh. 2011;136.

Ahmed N, Demaine H, Muir JF. Freshwater prawn farming in Bangladesh: history, present status and future prospects. Aqua. Res. 2008;39:806-819.

Banglapedia, National encyclopedia of Bangladesh. Retrieved September 23, 2011.


Nath RD, Rahi ML, Hossain GS, Huq KA. Bangladesh status of fresh water snail in Khulna district. Bangladesh Res. Pub. J. 2008;1(4):337-347.

Bogan AE. Global diversity of freshwater mussels (Mollusca, Bivalvia) in freshwater. Hydrobiologia. 2008;595:139–147.

Williams JD, Warren Jr. ML, Cummings KS, Harris JL, Neves RJ. Conservation status of freshwater mussels of the United States and Canada. Fisheries. 199318(9): 6-22

Ahmed ZU. Encyclopedia of Flora and Fauna of Bangladesh. 2007;17:415.

Hussein MA, Obuid Allah AH, Mahmoud AA, Fangary HM. Population dynamics of freshwater snails (Mollusca: Gastropoda) at Qena Governorate, Upper Egypt. Acad. J. Biolog. Sci. 2011;3(1):11 -22.

Hossain MM, Baki MA. preliminary survey of freshwater mollusca (gastropoda and bivalva) and distribution in the river Brahmaputra, Mymensingh, Bangladesh. The Journal of Zoology Studies. 2014;1(3): 19-22.

Brooks RT. Annual and seasonal variation and the effects of hydroperiod on benthic macroinvertebrates of seasonal forest “vernal” ponds in central Massachussets, USA. Wetlands. 2000;20(4):707-15.

Mesa LM. Intrannual, & seasonal variability of macroinvertebrates in monsoonal climate streams. Brazil. Arch. Biol. Tech. 2012;55:403-10.

Owojori OJ, Asaolu SO, Ofoezie IE. Ecology of Freshwater snails in opa reservoir and research from ponds at Obafemi Awolowo University Ile-Ife, Nigeria. Journal of Applied Sciences. 2006;6(15):3004–3015.

Dillon RT. The Ecology of Freshwater Mussels. Cambridge University Press, Cambridge. 2000;509.

Trivedy RK, Goel PK. Hand book of chemical and biological methods for water pollution studies: Environmental publications, Karad, Maharashtra (India); 1984.

Idowu RT. Limnological S udies of Lake Alau, Borno State, Nigeria, PhD Thesis, Department of Zoology, University of Nigeria Nsukka, Nigeria. 2004;189.

Dejoux C, Lauzane L, Leveque C. Nature des fords et reportitiondes organisms benthiques don la region de bal (Lac T. Chad) Cahiers ORSTOM series. Hydrobilogia. 1971;5: 213–223.

Mbagwu IG. Vertical distribution of macrobenthos invertebrates in the profundal sediments of the impoundment of the dammed river Dambe; Australian Journal of Aquatic Science. 1993;5: 19–25.

Dees L. Edible Land Snails in the United States. US Department of the Interior; 1970.

Okafor FC. Edible land sail: A manual of breeding management of Achatima achatina. Simarch Publizahas, Lagos. 2001;72.

Grilla A, LaJeunesse C, McMaster D, Morgan D. Feasibility of snail farming as a model for small urban farms to expand into niche markets for increased profitability. BSc Dissertation, Worcester Polytechnic Institute, United States. 2016;74.

Das R, Islam MS, Islam M, Ahmed KKU. Natural breeding of freshwater apple snail Pila globosa (Swainson) in pone and aquarium. Bangladesh Journal of Fisheries, 2020;32(1):45-54.

Bangladesh Population Census 2001, Bangladesh Bureau of Statistics; Cultural survey report of Gopalganj District 2007; Cultural survey report of Upazilas of Gopalganj District 2007.