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Distribution of Macrobrachium Rosenbergii (de Man) in Three Rivers of Paikgacha, Bangladesh

S.A. Khair
Department of Zoology, Rajshahi University, Rajshahi 6250, Bangladesh

S. Parween
Department of Zoology, Rajshahi University, Rajshahi 6250, Bangladesh

M.A. Hossain
Department of Zoology, Rajshahi University, Rajshahi 6250, Bangladesh

Abstract/ Executive Summary:

Distribution of post larvae, juveniles and adults of Macrobrachium rosenbergii was studied in three rivers of Paikgachha, Khulna during November'91 to April'94. The adults were found to ascend upstream and the matured ones again return to the estuary to breed. Post larvae of M. rosenbergii prefer a salinity range in between 0.5 to 19.0 ppt and juveniles require a salinity range in between 0.0 to 2.0 ppt.

Keywords: Macrobrachium rosenbergii, Postlarvae, Physico- chemical parameters

Location: Paikgacha, Khulna

Start Date: 00-11-1991

End Date: 00-04-1994

Program Area: Animal Health and Management

Non-commodity: Performance

Objectives:

To report the abundance and distribution of postlarvae, juvenile and adults M. rosenbergii in Bangladesh.

Methodology:

The adult prawns were collected once in a month during the period from November' 91 to April'94 from the Shibsha, Kapatakhha and Haria rivers of Paikgachha thana under Khulna district. The specimens were grouped according to size, sex and berried females. The prawns of total length up to 70 mm were considered as juvenile. Post-larvae were collected from a professional prawn seed collector, once in a month, mostly during the full moon. Post-larvae were collected by push nets made of nylon with 0.6 mm mesh. Total number of post-larvae caught in one day was recorded. All the postlarvae were collected from the river ?Shibsha. Salinity, temperature and pH of the river water were recorded during sampling of the prawns. Occurrence of the larvae and adults M. rosenbergii from different areas of Bangladesh was recorded from personal communication with different levels of personnel engaged in fishing, fish trading and Deparment of Fisheries.

Source of Information: Bangladesh J. Fish. Res., 4(2):199- 202, 2000

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The adults were found to ascend upstream and the matured ones again return to the estuary to breed. Postlarvae of M. rosenbergii prefer a salinity range in between 0.5 to 19.0 ppt and juveniles require a salinity range in between 0.0 to 2.0 ppt.

Knowledge Management: Journal