Implications of increasing pollution levels on commercially important fishes in Lake Victoria

Badamasi, Inuwa; Odong, Robinson; Masembe, Charles

doi:10.1016/j.jglr.2019.09.024

Cited by 7 publications

(3 citation statements)

References 101 publications

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“…In terms of histopathological changes in the liver after exposure to Hg in poultry, the sinusoids and central veins are dilated, hepatic cells show hypertrophy, and karyolytic and pycnotic cells are not prominent ( 150 , 151 ). Finally, histopathological changes in the liver attributable to As accumulation include decreased GSH levels, increased hepatic MDA levels, decreased hepatic SOD activity, and decreased activity of CAT, GR, and GSH-Px ( 152 ).…”

Section: Sources Of Heavy Metal Transmission and Their Impact On Poultrymentioning

confidence: 99%

Heavy metal toxicity in poultry: a comprehensive review

Aljohani

2023

Front. Vet. Sci.

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Arsenic (As), lead (Pb), cadmium (Cd), and mercury (Hg) have been recognized as most toxic heavy metals that are continuously released into the environment, both from natural sources and from anthropogenic production of fertilizers, industrial activities, and waste disposal. Therefore, As, Cd, Hg, and Pb are found in increasing concentrations in bodies of water, fodder, feed, and in the tissues of livestock, including poultry, in the surroundings of industrial areas, leading to metabolic, structural, and functional abnormalities in various organs in all animals. In poultry, bioaccumulation of As, Pb, Cd, and Hg occurs in many organs (mainly in the kidneys, liver, reproductive organs, and lungs) as a result of continuous exposure to heavy metals. Consumption of Cd lowers the efficiency of feed conversion, egg production, and growth in poultry. Chronic exposure to As, Pb, Cd, and Hg at low doses can change the microscopic structure of tissues (mainly in the brain, liver, kidneys, and reproductive organs) as a result of the increased content of these heavy metals in these tissues. Histopathological changes occurring in the kidneys, liver, and reproductive organs are reflected in their negative impact on enzyme activity and serum biochemical parameters. Metal toxicity is determined by route of exposure, length of exposure, and absorbed dosage, whether chronic and acute. This review presents a discussion of bioaccumulation of As, Cd, Pb, and Hg in poultry and the associated histopathological changes and toxic concentrations in different tissues.

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Section: Sources Of Heavy Metal Transmission and Their Impact On Poultrymentioning

confidence: 99%

Heavy metal toxicity in poultry: a comprehensive review

Aljohani

2023

Front. Vet. Sci.

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“…At least two studies in Uganda tried to address this issue by studying the impact of pollution on animals inhabiting this ecosystem. In 2019, Badamasi et al 41 detected biochemical and morphological alterations in three fish species of commercial interest living in this water basin: Oreochromis niloticus, Lates niloticus, and Protopterus aethiopicus. Already in 2006, Focardi et al 42 reported concentrations of mercury above the limits outlined by the World Health Organization (WHO) in the tissues of common fish species sampled in the Ugandan side of the lake.…”

Section: East African Communitymentioning

confidence: 99%

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Cristiano

Giacoma

Carere³

et al. 2021

S. Afr. J. Sci.

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Chemical pollution, i.e. the release of anthropogenic chemical substances into the environment, is a driver of biodiversity loss. Although this issue has been widely investigated in high-income countries of temperate regions, there is a lack of data for tropical areas of middle- or low-income countries, such as those in Eastern Africa. Some of the world’s richest biomes that are affected by multiple pressures, including chemical pollution, are hosted in this macro-region. However, few studies have addressed the impact of the release of anthropogenic chemical pollutants on the biodiversity, and the related potential implications for the deterioration of ecosystem goods and services in this area. A contribution in systemising the scientific literature related to this topic is, therefore, urgently needed. We reviewed studies published from 2001 to 2021, focusing on the chemical pollution impact on Eastern African wildlife. Despite an extensive literature search, we found only 43 papers according to our survey methods. We focused on wildlife inhabiting terrestrial ecosystems and inland waters. According to our search, Kenya and Uganda are the most represented countries accounting for about half of the total number of reviewed articles. Moreover, 67.4% of the studies focus on inland waters. The spread of anthropogenic chemicals into tropical areas, e.g. Eastern Africa, and their effects on living organisms deserve greater attention in research and politics. We report a weak increasing trend in publishing studies addressing this topic that might bode well. The combined effort of science and governments is crucial in improving the management of chemical pollutants in the environment for achieving the goals of biodiversity conservation.

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“…Although the concentrations of heavy metals in the fishes are usually below the maximum allowed level (Velusamy et al 2014 ; Safiur Rahman et al 2019 ), the fact that humans are at the top of the food chain cannot be ignored. In other words, as there are various food sources for human beings, the heavy metals in our bodies could accumulate and finally reach a level that causes serious health risks, such as cancer (Badamasi et al 2019 ; Yu et al 2020a ). In addition to the common types of contaminants (e.g., heavy metals, pesticides, pathogen, particulate matter), there are also some emerging types of contaminants (e.g., microplastics, personal care products, pharmaceuticals), and more efforts are needed to study their effects on human health (Aghilinasrollahabadi et al 2020 ; Li et al 2020b ; Zhang et al 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Environment and food safety: a novel integrative review

Jiang

Wang

et al. 2021

Environ Sci Pollut Res

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Environment protection and food safety are two critical issues in the world. In this review, a novel approach which integrates statistical study and subjective discussion was adopted to review recent advances on environment and food safety. Firstly, a scientometric-based statistical study was conducted based on 4904 publications collected from the Web of Science Core Collection database. It was found that the research on environment and food safety was growing steadily from 2001 to 2020. Interestingly, the statistical analysis of most-cited papers, titles, abstracts, keywords, and research areas revealed that the research on environment and food safety was diverse and multidisciplinary. In addition to the scientometric study, strategies to protect environment and ensure food safety were critically discussed, followed by a discussion on the emerging research topics, including emerging contaminates (e.g., microplastics), rapid detection of contaminants (e.g., biosensors), and environment friendly food packaging materials (e.g., biodegradable polymers). Finally, current challenges and future research directions were proposed. Supplementary Information The online version contains supplementary material available at 10.1007/s11356-021-16069-6.

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Implications of increasing pollution levels on commercially important fishes in Lake Victoria

Cited by 7 publications

References 101 publications

Heavy metal toxicity in poultry: a comprehensive review

Heavy metal toxicity in poultry: a comprehensive review

Chemical pollution as a driver of biodiversity loss and potential deterioration of ecosystem services in Eastern Africa: A critical review

Environment and food safety: a novel integrative review

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