Heavy metals bio-accumulation in tilapia and catfish species in Lake Rukwa ecosystem Tanzania

Mapenzi, Levinus Leonard; Shimba, Moses Joel; Moto, Edward Angelo; Maghembe, Reuben Silas; Mmochi, Aviti J.

doi:10.1016/j.gexplo.2019.106413

Cited by 21 publications

(19 citation statements)

References 11 publications

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“…Mean Cd in the gills, muscles and liver of Grey mullet (Mugil cephalus) sampled from the same creek were higher when compared to tilapia gills, muscles and livers sampled upstream and downstream in the present study; however, mean Pb in tilapia muscles and liver from downstream in the present study were higher than those measured in Grey mullet [50]. Singida tilapia (Oreochromis esculentus) sampled from Lake Rukwa in Tanzania has a lower concentration of lead than that in the present study [51] (Table 2). The gills, muscles and livers of Redbelly tilapia (Tilapia zillii) sampled from Lake Geriyo (Adamawa State, Nigeria) were analysed for Cd and Pb by Bawuro et al (2018) [36], and the mean concentration of Cd in fish gills was similar to that obtained from fishes downstream in the present study.…”

Section: Metal Concentrationcontrasting

confidence: 82%

Risk assessment of human exposure to lead and cadmium in tissues of Blackchin Tilapia (Sarotherodon melanotheron) from an intertidal creek in the Niger Delta region of Nigeria

Ihunwo

Ibezim-Ezeani

Wekpe

et al. 2022

Environ. Res. Commun.

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The present study investigated the risk associated with concentrations of lead and cadmium in tissues (gills, livers and muscles) of Blackchin tilapia (Sarotherodon melanotheron) from upstream and downstream regions of an intertidal creek in Rivers State, Nigeria. The trend of Cd in fish tissues and water was as follows: muscle > liver > gills > water. The concentration of Cd in fish gills was higher in downstream fish when compared to upstream fish. The mean Cdmg kg −1 in fish gills was 0.048 ± 0.015—upstream and 0.549 ± 0.152—downstream, 0.037 ± 0.030—upstream and 0.769 ± 0.100—downstream, 0.026 ± 0.015—upstream and 0.902 ± 0.118—downstream, and 0.040 ± 0.018—upstream and 0.727 ± 0.157—downstream in December, January, February and March respectively. The trend of Pb in fish tissues and water was as follows: muscle > liver > gills > water. Pb was generally higher in fish sampled downstream when compared to those sampled upstream of the creek. Fish gills in upstream fishes had Pb of 6.324 ± 0.388 mg kg−1, 5.140 ± 1.249 mg kg−1, 5.459 ± 0.471 mg kg−1 and 5.730 ± 0.859 mg kg−1 while downstream fishes had Pb 7.732 ± 0.640 mg kg−1, 9.401 ± 0.711 mg kg−1, 7.575 ± 0.624 mg kg−1 and 7.644 ± 0.637 mg kg−1 in December, January, February and March respectively. Cdfish gills < Food and Agriculture Organization (FAO) maximum permissible limit (MPL), Cdfish muscles and Cdlivers < MPL for FAO, FAO/WHO and WHO. Pbgills upstream and downstream > MPL for FAO, FAO/WHO and WHO. Pb and Cd did not indicate non-carcinogenic risks to human health owing to the consumption of fish up- and downstream. In the present study, fishes sampled upstream showed low cancer risk in adults, however, cancer risk index (CRI) indicated moderate cancer risk in children (male and female). For fishes sampled downstream, CRI indicated low risk for adults and male children, but a moderate risk for female children.

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Section: Metal Concentrationcontrasting

confidence: 82%

Risk assessment of human exposure to lead and cadmium in tissues of Blackchin Tilapia (Sarotherodon melanotheron) from an intertidal creek in the Niger Delta region of Nigeria

Ihunwo

Ibezim-Ezeani

Wekpe

et al. 2022

Environ. Res. Commun.

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“…This is because tilapia is usually masculinized with steroid hormone (Joshi et al 2019;Golan and Levavi-Sivan 2014) and there is a high dependence on antibiotics to achieve high yields (Roriz et al 2017). Also, catfish is known as a fish potentially containing heavy metals as it is conventionally reared using water from contaminated rivers such as the Mekong Delta (Vietnam) and Lake Rukwa (Tanzania) (Mapenzi et al 2020;Madsen et al 2015). In general, consumers of these species are concerned that undesirable substances have entered the food chain, especially due to the deposit of residues in the fish flesh (Zhong et al 2016;Megbowon and Mojekwu 2014).…”

Section: Introductionmentioning

confidence: 99%

South American fish species suitable for aquaponics: a review

et al. 2021

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Tilapia and catfish are the most popular fish species in aquaponics. However, they are not well-accepted in all markets, and finding alternative species is important in order to increase the variety of food products and meet market demands. South America has several potential fish species for aquaponics systems. Encouraging the implementation of integrated aquaculture systems by providing information about the production of South American species can help to increase the supply of high-quality food and aquaculture diversification. Thus, data for five South American fish species with potential for aquaponics were compared with existing data for the main traditional warm water species in this system, tilapia and catfish. Moreover, the degree of suitability of the novel species for these systems in terms of zootechnical performance, tolerance to water quality and nutritional composition of fish flesh were discussed. The South American species considered were jundia or silver catfish (Rhamdia quelen), yellowtail lambari (Astyanax lacustris), pacu (Piaractus mesopotamicus), tambaqui (Colossoma macropomum) and snook (Centropomus spp.). Their description and the tabular comparison with the most traditional aquaponic-cultured species show they are suited for this production system. How suitable they are will depend on the system design, as well as the regional characteristics of the market where they will be produced.

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“…However, mangrove roots metabolize to avoid excessive heavy metal input, reducing the negative impacts on growth. The metal absorption is also in uenced by roots' absorption activity depending on the root system and their lenticels size(Ma et al 2019;Mapenzi et al 2020).…”

mentioning

confidence: 99%

The Clustering and Distribution of Heavymetal Accumulation and Translocation as an Ability of Mangrove Vegetation to Reduce Impact of Heavymetal (Hg, Cd and Zn) Pollution

Hilmi

Dewi

Sudiana

et al. 2022

Preprint

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Mangrove has ability to reduce impact of heavy metal contaminant which released from industry and domestic waste. Mangrove has ability to absorb, accumulate, and translocate heavy metal contaminant. Whereas the clustering and landscape of mangrove ecosystem show the grading and zoning of mangrove vegetation to accumulate heavymetal pollution. .Therefore, this study aimed to analyze distribution and clustering of heavy metal accumulation and traslocation in mangrove ecosystem.. The results showed the accumulation of Mercury were 0.1347 ± 0.0212 ppm (sediment), 0.0137 ± 0.0137 ppm (water), 0.0110–0.0640 ppm (stem and bark), 0.0020–0.0120 ppm (leaves), and 0.0260–0.0690 ppm (roots). Cadmium accumulations between 1.6048 ± 0.3595 ppm (sediment), 0.0292 ± 0.0047 ppm (water), 0.0790–0.2650 ppm (stem and bark), 0.0130–0.0480 ppm (leaves), and 0.1560–0.2300 ppm (roots). Furthermore, Zinc had score that were 35.1746 ± 5.4856 ppm (sediment), 0.0550 ± 0.0095 ppm (water), 10.3250–32.4490 ppm (stem and bark), 7.1200-23.4150 ppm (leaves), and 16.7170–39.1200 ppm (roots). However, bioaccumulation factors of Hg ranged between 0.0210–0.4751, Cd 0.0105–0.1541, and Zn 0.2807–1.2506 with the translocation factors of 0.0459–1.0547 (Hg), 0.0642–1.3855 (Cd), and 0.4086–1.3057 (Zn). The mangrove landscape showed that of Sonneratia alba (best of Hg accumulation), Rhizophora mucronata (best of Cd accumulation), Avicennia marina (best of Zn accumulation)

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Heavy metals bio-accumulation in tilapia and catfish species in Lake Rukwa ecosystem Tanzania

Cited by 21 publications

References 11 publications

Risk assessment of human exposure to lead and cadmium in tissues of Blackchin Tilapia (Sarotherodon melanotheron) from an intertidal creek in the Niger Delta region of Nigeria

Risk assessment of human exposure to lead and cadmium in tissues of Blackchin Tilapia (Sarotherodon melanotheron) from an intertidal creek in the Niger Delta region of Nigeria

South American fish species suitable for aquaponics: a review

The Clustering and Distribution of Heavymetal Accumulation and Translocation as an Ability of Mangrove Vegetation to Reduce Impact of Heavymetal (Hg, Cd and Zn) Pollution

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