The uptake of fluoride concentration and its effects on the growth rate of shrimps (<i>Palaemon elegans</i>, Rathke)

El‐Said, Ghada F.; Sallam, Neama A.

doi:10.1080/02757540802069449

Cited by 14 publications

(2 citation statements)

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“…Excessive iodide (I) may cause goiter, hypothyroidism, or hyperthyroidism in exposed people [28]. Ingestion of fluoride can cause nausea, vomiting, abdominal pain, diarrhea, fatigue, drowsiness, coma, convulsions, cardiac arrest, and eventual death [29]. It can also affect physiological processes such as metabolism, growth, and reproduction.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Fluctuation of Halogens in Relation to the Pollution Status along Lake Mariout, Egypt

El‐Said

Zokm

El-Sayed

et al. 2020

Journal of Chemistry

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This paper aimed to study the anomalous fluctuation of halogens with respect to the pollution status in surface water (w), pore water (p), and sediments (s) of Lake Mariout. It provided a framework for understanding the distribution of dissolved and precipitated halogen salts related to the pollution status of the lake. The study cleared out that bromide was only the most abundant halogen in the three studied partitions. On contrast, sediment’s partition contained the lowest chloride content. Fluoride minerals, especially, fluorapatites and carbonate-fluorapatite (FAP and CFAP), had high Saturation Index (SI) values in surface water (42.77–51.95 and 16.04–60.89, respectively) and in pore water (51.26–54.60 and 17.52–78.33, respectively). Bromide and chloride were mainly found in the soluble forms in the surface water and pore waters. Iodide salts, (Ca(IO3)2 and Ca(IO3)2.6H2O), were moderately precipitated in surface and pore waters. Thus, SI content reflected that halogens, especially fluoride and iodide, played a vital role in reducing lake pollution. Fluorite (CaF2) and sellaïte (MgF2) could only be formed in pore water, while calcite and aragonite could be deposited from surface water. In addition, Cl was mainly found in the forms of NaCl, CaCl2, MgCl2, and KCl in surface and pore waters. The multivariate analysis revealed that fluoride precipitate may serve in decreasing the dissolved salt pollution. Multivariate analysis showed that in the long run, the fluoride precipitation in FAP and CFAP can significantly adsorb and absorb various pollutants and can protect the lake from pollution. The ecological risk assessment conducted by calculating the enrichment factor (EF) showed that the lake was still unpolluted. Regarding human health risks, at appropriate levels of human health and safety, the hazard quotient (HQ) and hazard index (HI) of halogens found to be lower than these reported levels. Hence, ingestion and dermal absorption routes of halogens by surface water and sediments did not pose any adverse effects to population reflecting uncontaminated status of Lake Mariout.

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Section: Introductionmentioning

confidence: 99%

Anomalous Fluctuation of Halogens in Relation to the Pollution Status along Lake Mariout, Egypt

El‐Said

Zokm

El-Sayed

et al. 2020

Journal of Chemistry

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“…Other fish species such as rainbow rearing trout recorded threshold of 50 % mortality under 8.5 mg/L fluoride exposure (Wright, 1977). A coastal Shrimp (Palaemon elegans) decreased by 118.19 % of its growth after being exposed to extra 0.5 mg/L fluoride concentrations in a fluoridated sea water (El-said & Sallam, 2008). The acuteness of toxicity increases with an increase of fluoride concentrations and thus immediate effects are being felt by various fish species (Camargo, 2003).…”

Section: Fluoride Bioaccumulation and Its Effects In Fishmentioning

confidence: 99%

Assessment of fluoride bioaccumulation in catfish grown in fluoride rich waters

Bejumula

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Fluoride bioaccumulation in fish poses a significant impact to their growth performance, survival and consequently to the upper trophic levels. Few studies have reported the impact of high fluoride concentration and their accumulation to catfish in African settings. A 60-days African catfish (Claris gariepinus) cultivation was conducted at Ngarenanyuki ward and at the Nelson Mandela African Institution of Science and Technology (NM-AIST) laboratory in Arusha, Tanzania, to determine fluoride bioaccumulation and its effect on growth and survival of the catfish. The juvenile catfishes were exposed to water containing 36 mg Fˉ/L in a fishpond and synthetic water containing fluoride concentrations (NaF) of 5, 15, 36 and 45 mg/L in the aquaria set at NM-AIST laboratory. Fish growth and survival was determined and the fluoride concentrations in fish tissues were analysed by ion selective electrode. At the end of the experiment, fish survival rate was greater than 90% in fluoride levels of 5, 15, 36 mg/L compared to 65.8% in 45 mg/L aquaria treatment. Also, significant fluoride bioaccumulation was observed in fish bones (222.00 mg/kg, dry weight) followed by gills (177.4 mg/kg), skin (9 mg/kg) and low amount in fillets (1.467 mg/kg). In all these tissues, fluoride bioaccumulation significantly rose with increase in fluoride levels in the water and exposure time (p< 0.001). From this experiment, it is concluded that high fluoride occurrence in surface water led to increased bioaccumulation in the African catfish and correlates with exposure time. Therefore, to grow catfish in water containing more than 45 mg/L requires a deflouridation process to take place.

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The Egyptian Nile estuarine habitats: a review

Abdelsalam,

Tadros,

Moneer

et al. 2024

Aquat Sci

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Estuaries are nutrient-rich environments characterized by a gradient in salinity due to the mixing of freshwater and seawater. These bodies of water play vital functions in nature and provide a wide variety of essential ecosystem services. In general, many natural and/or man-made activities have strongly stressed the Egyptian Nile estuarine habitats, as has the water shortage that was expected after the construction of the Grand Ethiopian Renaissance Dam. In recent decades, the Nile Delta has been considered to be one of the most important productive oil-producing petroleum regions due to onshore and offshore gas discoveries alongside gasoline and base oil generation. Up-to-date systematic reviews of the Egyptian estuarine habitats (Rosetta and Damietta) are missing, and the review reported here was undertaken to fill this gap. In this review, we consider the physical, chemical, geological, pollution, and biological parameters of Egyptian Nile estuaries. In this context, our aim is to contribute to a broader understanding of the Egyptian estuarine habitat; moreover, we provide potential warning signals that may aid in estuarine environmental protection. We found that most of the previous studies had focused on the two branches of the Nile or on the marine waters adjacent to these branches, and that only a few studies focused on the estuarine habitats themselves. In most of these previous studies, the salinity gradient of water was reported to be a significant factor in the distribution of the different measured parameters while, in contrast, more recent investigations confirm the importance of potential effluent sources in affecting the distribution of these parameters. We highly recommend that the data reported here be updated in future studies on different environmental aspects.

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The uptake of fluoride concentration and its effects on the growth rate of shrimps (Palaemon elegans, Rathke)

Cited by 14 publications

References 5 publications

Anomalous Fluctuation of Halogens in Relation to the Pollution Status along Lake Mariout, Egypt

Anomalous Fluctuation of Halogens in Relation to the Pollution Status along Lake Mariout, Egypt

Assessment of fluoride bioaccumulation in catfish grown in fluoride rich waters

The Egyptian Nile estuarine habitats: a review

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