A COMPARATIVE STUDY OF PLANKTON PRODUCTION IN NURSERY PONDS SUPPLIED WITH FERTILIZERS AND FEED AND FERTILIZERS

Md. Abdul Halim  Miah; Md. Saidur  Rahman; Khairul  Azam; Z.F.  Ahmed

doi:10.53808/KUS.1999.1.1.69-74-Ls

Authors

Md. Abdul Halim Miah Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
Md. Saidur Rahman Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
Khairul Azam Fisheries and Marine Resource Technology Discipline, Khulna University, Khulna 9208, Bangladesh
Z.F. Ahmed Faculty of Fisheries, Bangladesh Agricultural University, Mymensingh, Bangladesh.

DOI:

https://doi.org/10.53808/KUS.1999.1.1.69-74-Ls

Keywords:

Plankton; Nursery pond; Feed; Fertilizer; Indian major carps

Abstract

The present study was conducted to study the effects of f ertilizers, and feed and fertilizers on plankton production in six Indian major carps’ nursery ponds for a period of 28 days. Water quality parameters were found to be within acceptable ranges in all the experimental ponds irrespective of different treatments. Some 52 genera of phytoplankton and 7 genera of zooplankton were recorded from the experimental ponds. The total number of phytoplankton (3,131×104 1-1) and zooplankton (15×104 1-1) in fed and fertilized ponds were slightly higher than that of only fertilized ponds (phytoplankton, 2,777×10 4 1-1 and zooplankton, 14×104 1-1). Among phytoplankton, Cyanophyceae was found to be the most dominant group by numbers (1,399×10 4 1-1 in fertilized pond and 1,683 ×104 1-1 in fed and fertilized pond) but Chlorophyceae by genera (29 genera). Among zooplankton, rotifera belonging to 4 genera was found to be the most dominant group both by numbers (9×104 1-1 in fertilized pond and 11×104 1-1 in fed and fertilized pond) and by genera. However, the differences in plankton population as obtained from fertilized, and fed and fertilized nursery ponds were not statistically significant.

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