Effect of heavy metals in irrigation water of different fish farms on the quality of cultured fish

Abstract

Results indicated that most of the highest averages of all heavy metal concentrations in water, sediment and fish muscular tissues were recorded from Bahr El-Baqar fish farm and their lowest values from El-Abbasa fish farm. The highest contamination factors for most heavy metals were recorded in Bahr El-Baqar fish farm and the lowest in El-Abbasa fish farm. The present study concluded that El-Abbassa fish farm has low pollution and the other fish farms (Edko, Mariout, and Bahr El-Baqar) have progressive deterioration of the site quality.

Growth Performance and Biochemical Composition of Nile Tilapia (Oreochromis niloticus) Reared in Membrane Bioreactor Treated Wastewater

“…A study by Santhakumaran et al (2020), showed that algae are a valuable mineral source and some species contain Fe ranging from 0.08 to 10.21 mg/g while Zn content can range from 0.01 to 1.10 mg/g. The bioavailability of minerals from ingested food can be influenced by the ingestion rate, the nature of the food, and the effectiveness of food assimilation (El-Khatib et al, 2020;Marengo et al, 2018). The microminerals concentration in the maturation pond and the MBR were listed in the order Fe > Zn > Mn.…”

Assessment of heavy metal pollution in water and its effect on Nile tilapia (Oreochromis niloticus) in Mediterranean Lakes: a case study at Mariout Lake

“…(Silim 2015). The fact that domestic, municipal, agricultural, and industrial wastes are continuously discharged into the lake makes El-Max pumping site essential to maintain the lake water level about 2.8-3.0 m below the mean sea level (Khalil et al 2013;El-Khatib et al 2020).…”

“…It is a number that describes the bioaccumulation as a ratio of the concentration of a chemical inside an organism to its concentration in the surrounding environment (Goher et al 2015). The bioaccumulation factor (BAF) of a heavy metal in fish tissues was determined using the equation according to El-Khatib et al (2020).…”

“…The high fluctuation in the concentrations of all the measured metals may be attributed to the quality and quantity of the waste discharged into the lake via drains, especially El-Qalaa and El-Umoum Drain. In addition, some studies focused only on the Lake Main Basin, like El-Bestauy (1993), Amr et al (2005), Abaza et al (2009), and Afifi et al (2016, but others studied the fishery basin, like Khalil (1998) and El-Khatib et al (2020). However, some researchers collected water samples monthly from the lake, for example, Saad et al (1981) and El-Bestauy (1993), while others studied seasonal variations, like Khalil (1998), El-Shorbagi (2015, Ali et al (2020), andEl-Khatib et al (2020), but Afifi et al (2016) explored heavy metal concentrations of water samples collected only in the winter season.…”

“…In addition, some studies focused only on the Lake Main Basin, like El-Bestauy (1993), Amr et al (2005), Abaza et al (2009), and Afifi et al (2016, but others studied the fishery basin, like Khalil (1998) and El-Khatib et al (2020). However, some researchers collected water samples monthly from the lake, for example, Saad et al (1981) and El-Bestauy (1993), while others studied seasonal variations, like Khalil (1998), El-Shorbagi (2015, Ali et al (2020), andEl-Khatib et al (2020), but Afifi et al (2016) explored heavy metal concentrations of water samples collected only in the winter season. In addition, some studies determined only the concentrations of dissolved heavy metals, as in Saad et al (1981), El-Bestauy (1993), andEl-Shorbagi (2015), while others measured the total heavy metal concentrations in Mariout Lake water, like Ashmawy et al (2018), Abd Elalkhoris et al (2020, and Morsy et al (2020).…”