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Study on the Pattern of Some Selected Zooplankton in Two Perennial Water Bodies

Author : Rakhi Kumari

Abstract :

Microcrustaceans have a wide distribution in freshwater habitats. In the present study the microcrustaceans consisted mainly of order cladocera, sub class-copepod, Ostracoda and their families. The population density of the zooplankton consisted mainly of cladoceran in the entire sample of both the lentic water bodies. Generally, cladocerans was represented by family sididae Daphnidae, Moinidae and Bosminidae. At site I, The peak of total cladoceran population (58 u/L) was recorded in August, 2024 and the lowest (4u/L) in May, 2024during the first year. In the second year, the peak (68 u/L) was observed in February, 2025 and minimum (12 u/L) in more than one months. While, the total cladocerans population density at site 2, was more abundant in comparison to site I. At this site the cladoceron showed their peak (78 and 116 u/L) in December, 2023 and February, 2023 during both the annual cycles whereas, the lowest (12 u/L) was recorded in October 2023 and May, 2025 respectively.

Keywords :

Microcrustaceans, Sididae, Daphnidae and Bosminidae etc.