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VOL. 10, ISSUE 2 (2025)
Seasonal and spatial dynamics of physico-chemical water quality in Khairi Dam: Implications for Labeo catla (Hamilton, 1822) aquaculture
Authors
Kashid RM, Pokale SN
Abstract
This study evaluates the seasonal and spatial dynamics of
physico-chemical water quality in Khairi Dam and interprets their implications
for Labeo catla (Hamilton, 1822)
aquaculture. Monthly surface samples were collected at five fixed sites (North,
Central, South, East, West) from September 2023 to August 2024 (n = 5
replicates per site per month) for twelve parameters: temperature, pH,
dissolved oxygen (DO), nitrate, phosphate, turbidity, total hardness, total
dissolved solids (TDS), biological oxygen demand (BOD), chloride, alkalinity,
and dissolved CO₂. Data were summarized as mean ± SD and analyzed using two-way
ANOVA with factors Site and Season (Post-monsoon: Oct–Jan; Pre-monsoon:
Feb–May; Monsoon: Jun–Sep). Temperature (24.6–31.0 °C) and pH (7.30–7.75)
remained within culture-suitable ranges, whereas DO showed pronounced
seasonality, with pre-monsoon minima (~5.0–5.8 mg L⁻¹) and monsoon/post-monsoon
maxima (~7.3–7.8 mg L⁻¹). Monsoon pulses increased nitrate (0.1–0.7 mg L⁻¹),
phosphate (0.06–0.21 mg L⁻¹), turbidity (15–50 NTU), and BOD (1.5–3.4 mg L⁻¹),
particularly at the North inflow, while conservative ions and alkalinity
concentrated pre-monsoon and diluted during monsoon (hardness 132–172 mg L⁻¹;
TDS 285–405 mg L⁻¹; chloride 25–45 mg L⁻¹; alkalinity 118–160 mg L⁻¹; dissolved
CO₂ 3.2–7.5 mg L⁻¹). Season was a significant driver (p < 0.001) for most
parameters; site effects were present for nutrients, turbidity, and select
ions, with generally non-significant Site×Season interactions, indicating
parallel seasonal trajectories across sites. Benchmarking against aquaculture
guidelines shows overall suitability for L. catla, with two management
priorities: mitigating pre-monsoon DO dips (aeration, feeding/biomass control)
and managing monsoon nutrient–turbidity surges near the inflow (site selection,
solids shielding, prudent feeding). Findings provide an operational,
season-aware template for reservoir-based carp culture under monsoon
variability.
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Pages:21-25
How to cite this article:
Kashid RM, Pokale SN "Seasonal and spatial dynamics of physico-chemical water quality in Khairi Dam: Implications for <i>Labeo catla</i> (Hamilton, 1822) aquaculture". International Journal of Fisheries and Aquatic Research, Vol 10, Issue 2, 2025, Pages 21-25
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