Herbicides in the tissues and organs of different fish species (Kalk Bay harbour, South Africa): occurrence, levels and risk assessment

Ojemaye, Cecilia Y.; Onwordi, C. T.; Petrik, Leslie

doi:10.1007/s13762-019-02621-y

Cited by 17 publications

(8 citation statements)

References 57 publications

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“…Our published study showed bioaccumulation of all herbicides in biota i.e. mussels, limpets, sea urchins and seaweeds (except for metolachlor and butachlor in limpets, and alachlor and metolachlor in sea urchins), (Ojemaye et al, 2020a(Ojemaye et al, , 2020b. As previously emphasised, herbicides can cause a broad range of toxicities (Carlberg, 2014).…”

Section: Ecological Relevance Of Herbicide Contaminationmentioning

confidence: 52%

“…We previously sampled commercially-exploited, wild-caught small and medium pelagic fish including snoek (Thyrsites atun), bonito (Sarda orientalis), hottentot (Pachymetopon blochii), and panga (Pterogymnus laniarius) for target chemical compounds (pharmaceuticals and personal care products, perfluoroalkyl compounds and industrial chemicals) (Ojemaye and Petrik, 2019). Moreover, five indicator herbicides were also detected in all the fish sampled, which could potentially pose a carcinogenic risk to humans who consume these fish over an extended period of time (Ojemaye et al, 2020b). Notably, all fish sampled contained high levels of the selected chemical compounds in their fillets, liver, gills and intestines, showing that the same chemicals we had found in the sewage effluent (Swartz et al, 2018a(Swartz et al, , 2018b were found in the marine environment.…”

Section: Discussionmentioning

confidence: 99%

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Herbicides in Camps Bay (Cape Town, South Africa), supplemented

Ojemaye

Onwordi

Pampanin

et al. 2021

Science of The Total Environment

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In 2017 sewage released into Camps Bay, Cape Town was nine fold more than rainfall.• Five herbicides were found in seawater, sediments and marine biota from Camps Bay. • The chemical load in sewage was not removed by a 3 mm screen pretreatment step. • The chemical signature found in marine biota was linked to herbicides in sewage. • Dilution of sewage by seawater did not prevent bioaccumulation of herbicides.

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Section: Ecological Relevance Of Herbicide Contaminationmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 99%

Herbicides in Camps Bay (Cape Town, South Africa), supplemented

Ojemaye

Onwordi

Pampanin

et al. 2021

Science of The Total Environment

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“…Pesticides comprise semi-volatile persistent organic pollutants (POPs), categorized by their use as biocides, fungicides, bactericides, insecticides, and herbicides [26,27,77]. Generally, a pesticide is defined as "any substance or combination of substances that is used to prevent or eradicate undesirable insects, including vectors of disease in animals, weeds, fungi, or other organisms in order to enhance food production, and to facilitate the processing, storage, transportation, or marketing of food and agricultural commodities" [78].…”

Section: Pesticidesmentioning

confidence: 99%

“…Irrespective of whether they are applied intentionally or by runoff, pesticides remain in various water sources for a long time due to their chemical properties such as adsorption and solubility [82]. In general, most herbicide monitoring studies are focused on surface freshwater sources such as lakes, rivers, and reservoirs, with a particular focus on organochlorine and organophosphorus compounds [26,27,77,79].…”

Section: Pesticidesmentioning

confidence: 99%

“…The authors found that pesticide concentrations varied amongst specific muscle groups of the fish. Another study conducted in South Africa examined the concentration of herbicides in several organs of four wild fish species sold at Kalk Bay harbor in Cape Town [77]. The authors reported the presence of herbicides, namely simazine and atrazine, in the liver, intestines, gills, and filet.…”

Section: Pesticidesmentioning

confidence: 99%

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Contaminants of Emerging Concern (CECs) and Male Reproductive Health: Challenging the Future with a Double-Edged Sword

Marcu

Keyser

Petrik

et al. 2023

Toxics

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Approximately 9% of couples are infertile, with half of these cases relating to male factors. While many cases of male infertility are associated with genetic and lifestyle factors, approximately 30% of cases are still idiopathic. Contaminants of emerging concern (CECs) denote substances identified in the environment for the first time or detected at low concentrations during water quality analysis. Since CEC production and use have increased in recent decades, CECs are now ubiquitous in surface and groundwater. CECs are increasingly observed in human tissues, and parallel reports indicate that semen quality is continuously declining, supporting the notion that CECs may play a role in infertility. This narrative review focuses on several CECs (including pesticides and pharmaceuticals) detected in the nearshore marine environment of False Bay, Cape Town, South Africa, and deliberates their potential effects on male fertility and the offspring of exposed parents, as well as the use of spermatozoa in toxicological studies. Collective findings report that chronic in vivo exposure to pesticides, including atrazine, simazine, and chlorpyrifos, is likely to be detrimental to the reproduction of many organisms, as well as to sperm performance in vitro. Similarly, exposure to pharmaceuticals such as diclofenac and naproxen impairs sperm motility both in vivo and in vitro. These contaminants are also likely to play a key role in health and disease in offspring sired by parents exposed to CECs. On the other side of the double-edged sword, we propose that due to its sensitivity to environmental conditions, spermatozoa could be used as a bioindicator in eco- and repro-toxicology studies.

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