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<p>Lead (Pb) pollution in water bodies poses significant threats to aquatic biodiversity, highlighting the need for assessment through suitable bioindicators for monitoring and evaluating ecosystem health. This field study was carried out to evaluate the bioaccumulation potential of freshwater snail species in Sargodha, Pakistan. The snail species were collected between September and November, 2023, from two different types of freshwater bodies (lentic and lotic) and identified as <i>Indoplanorbis exustus</i> and <i>Lymnaea acuminata</i>. The Pb concentration was assessed in snail soft bodies and water samples through atomic absorption spectrometry. The results showcased the mean Pb concentration of 0.1572&#xa0;ppm (dw) in <i>I. exustus</i>, 0.1487&#xa0;ppm (dw) in <i>L. acuminata</i>, and 0.0344&#xa0;ppm (ww) in both types of water samples. There were significant differences among the water bodies, with stagnant water bodies having more Pb contamination than flowing ones. Additionally, significant differences were ascertained between the mean Pb concentration of both snail species and water samples. However, linear regression analysis showed an inverse relationship between the concentrations of Pb in water and both snail species. In addition, the bioconcentration factor (BCF) values calculated for snail species showed that both <i>I. exustus</i> and <i>L. acuminata</i> were equally good bioaccumulators of Pb in lentic and lotic water bodies. In conclusion, the study findings emphasized the urgent need for freshwater monitoring and pollution management in the region.</p>

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Evaluation of lead bioaccumulation potential in freshwater snail species as indicators of aquatic pollution in lentic and lotic waterbodies of Sargodha, Pakistan

  • 期刊论文

  • 发表日期：

    2026年4月28日

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  • Ayesha Tariq,
  • Rana Muhammad Ahsan Sajid,
  • Naunain Mehmood,
  • Aima Iram Batool,
  • Hira Muqaddas,
  • Zafar Iqbal Khan

摘要

Lead (Pb) pollution in water bodies poses significant threats to aquatic biodiversity, highlighting the need for assessment through suitable bioindicators for monitoring and evaluating ecosystem health. This field study was carried out to evaluate the bioaccumulation potential of freshwater snail species in Sargodha, Pakistan. The snail species were collected between September and November, 2023, from two different types of freshwater bodies (lentic and lotic) and identified as Indoplanorbis exustus and Lymnaea acuminata. The Pb concentration was assessed in snail soft bodies and water samples through atomic absorption spectrometry. The results showcased the mean Pb concentration of 0.1572 ppm (dw) in I. exustus, 0.1487 ppm (dw) in L. acuminata, and 0.0344 ppm (ww) in both types of water samples. There were significant differences among the water bodies, with stagnant water bodies having more Pb contamination than flowing ones. Additionally, significant differences were ascertained between the mean Pb concentration of both snail species and water samples. However, linear regression analysis showed an inverse relationship between the concentrations of Pb in water and both snail species. In addition, the bioconcentration factor (BCF) values calculated for snail species showed that both I. exustus and L. acuminata were equally good bioaccumulators of Pb in lentic and lotic water bodies. In conclusion, the study findings emphasized the urgent need for freshwater monitoring and pollution management in the region.