Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)

Palm Oil Mill Effluent (POME) is a significant environmental pollutant that adversely affects fish physiology, particularly liver function, which plays a critical role in detoxification and metabolism. The hepatosomatic index (HSI) is a reliable biomarker for assessing liver health under environment...

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Main Authors: Zulfahmi Ilham, Setia Batubara Agung, Ali Rizwan, Wulandari Nasution Ayu, Puspita Bela, Nafis Badratun
Format: Article
Language:English
Published: EDP Sciences 2025-01-01
Series:BIO Web of Conferences
Online Access:https://www.bio-conferences.org/articles/bioconf/pdf/2025/07/bioconf_icfaes24_02015.pdf
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author Zulfahmi Ilham
Setia Batubara Agung
Ali Rizwan
Wulandari Nasution Ayu
Puspita Bela
Nafis Badratun
author_facet Zulfahmi Ilham
Setia Batubara Agung
Ali Rizwan
Wulandari Nasution Ayu
Puspita Bela
Nafis Badratun
author_sort Zulfahmi Ilham
collection DOAJ
description Palm Oil Mill Effluent (POME) is a significant environmental pollutant that adversely affects fish physiology, particularly liver function, which plays a critical role in detoxification and metabolism. The hepatosomatic index (HSI) is a reliable biomarker for assessing liver health under environmental stress. This study evaluated the effects of chronic POME exposure on the HSI of zebrafish (Danio rerio) to understand their physiological adaptations to POME contamination. A Completely Randomized Design (CRD) was applied, with three treatments (0 mL/L as control, 0.5 mL/L, and 1 mL/L) and four replicates. Statistical analysis using one-way ANOVA revealed no significant differences among treatments (p > 0.05), with HSI values ranging at 0.175–0.180 by day 28. Despite fluctuations during the study, such as an initial 20% increase in HSI in treatment A by day 7, the results indicate adaptive hepatic responses without significant toxic effects at the tested concentrations. These findings highlight the resilience of zebrafish to low concentrations of POME, underscoring the importance of HSI as a biomarker for sub-lethal toxicant effects. This study contributes to aquatic pollution management by providing insights into the ecological risks associated with POME and emphasizing the need for stricter wastewater discharge standards and policies to safeguard aquatic ecosystems.
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spelling doaj-art-401854783ff54b82bad7e85d6b4b398c2025-02-05T10:43:33ZengEDP SciencesBIO Web of Conferences2117-44582025-01-011560201510.1051/bioconf/202515602015bioconf_icfaes24_02015Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)Zulfahmi Ilham0Setia Batubara Agung1Ali Rizwan2Wulandari Nasution Ayu3Puspita Bela4Nafis Badratun5Department of Fisheries Resources Utilization, Faculty of Marine and Fisheries, Syiah Kuala UniversityDepartment of Biology, Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan. Kota MedanDepartment of Aquaculture, Faculty of Marine and Fisheries, Syiah Kuala UniversityDepartment of Aquaculture, Faculty of Marine and Fisheries, Syiah Kuala UniversityDepartment of Aquaculture, Faculty of Marine and Fisheries, Syiah Kuala UniversityDepartment of Biology, Faculty of Mathematics and Natural Sciences, Syiah Kuala UniversityPalm Oil Mill Effluent (POME) is a significant environmental pollutant that adversely affects fish physiology, particularly liver function, which plays a critical role in detoxification and metabolism. The hepatosomatic index (HSI) is a reliable biomarker for assessing liver health under environmental stress. This study evaluated the effects of chronic POME exposure on the HSI of zebrafish (Danio rerio) to understand their physiological adaptations to POME contamination. A Completely Randomized Design (CRD) was applied, with three treatments (0 mL/L as control, 0.5 mL/L, and 1 mL/L) and four replicates. Statistical analysis using one-way ANOVA revealed no significant differences among treatments (p > 0.05), with HSI values ranging at 0.175–0.180 by day 28. Despite fluctuations during the study, such as an initial 20% increase in HSI in treatment A by day 7, the results indicate adaptive hepatic responses without significant toxic effects at the tested concentrations. These findings highlight the resilience of zebrafish to low concentrations of POME, underscoring the importance of HSI as a biomarker for sub-lethal toxicant effects. This study contributes to aquatic pollution management by providing insights into the ecological risks associated with POME and emphasizing the need for stricter wastewater discharge standards and policies to safeguard aquatic ecosystems.https://www.bio-conferences.org/articles/bioconf/pdf/2025/07/bioconf_icfaes24_02015.pdf
spellingShingle Zulfahmi Ilham
Setia Batubara Agung
Ali Rizwan
Wulandari Nasution Ayu
Puspita Bela
Nafis Badratun
Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
BIO Web of Conferences
title Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
title_full Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
title_fullStr Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
title_full_unstemmed Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
title_short Chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish (Danio rerio)
title_sort chronic effects of palm oil mill effluent on the hepatosomatic index of zebrafish danio rerio
url https://www.bio-conferences.org/articles/bioconf/pdf/2025/07/bioconf_icfaes24_02015.pdf
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