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Plant Science Today (PST)

Research Articles

Vol. 12 No. 2 (2025)

Laboratory aquaculture of Lecane inermis (Bryce,1842) isolated from the Hilla River in Babylon province-Iraq

DOI
https://doi.org/10.14719/pst.6305
Submitted
24 November 2024
Published
10-04-2025 — Updated on 23-04-2025
Versions

Abstract

The current study aimed to evaluate the environmental conditions necessary for cultivating the rotifer species (Lecane inermis) initially recorded in the Hilla River and their impact on its density. Using a zooplankton net, rotifer samples were collected in the early morning of winter 2024 from the Hilla River in Al- Mahawil district, Babylon province. The physical and chemical properties of the site were analyzed, including air temperature (6 °C), water temperature (9.5 °C), electrical conductivity (EC) (1090 ?s/cm), total dissolved solids (TDS) (772 ppm), salinity (636 ppm), pH (8.6), dissolved oxygen (DO) (12.3 ppm) and turbidity (11.5 NTU). The cultured species L. inermis was isolated, identified and subsequently cultivated. Various factors, including temperature, salinity, dissolved oxygen and light versus dark, were then investigated to determine the effect on species density. The findings demonstrate that L.inermis exhibited higher density at low temperatures and revealed broad salinity tolerance, though it could only withstand lower salinity concentrations at high temperatures. Additionally, its density was greater under dark conditions than under light conditions. The highest density recorded was 585 ± 20 ind/L during the winter season.

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