Selected Heavy Metals in Penaeus vannamei (White Prawn) in Aquaculture Pond near Likas Lagoon, Sabah, Malaysia

Abstract

Abstract-The issue of heavy metal toxicity has received considerable attention in aquaculture field. Most studies of heavy metal in aquaculture have only focused on fish species and molluscs but not prawn. Thus, the key research objective of this study is to identify and study selected heavy metals in Penaeus vannamei in the study area. In this study, the mature prawns (5 months old) were collected and 1g of sample is digested using H 2 SO 4 and HNO 3 for 2 hours and filtered. The heavy metal concentration in prawn samples is determined using ICP-OES. The major heavy metals in the prawn head and shell are dominated by Fe>Cu>Zn>Cr>Mn>Ni while in prawn flesh is Fe>Zn>Cu>Cr>As>Ni>Mn. In this study, the highest heavy metals toxicity are prawn head> prawn shell> prawn flesh. In this study, it was found that most of the heavy metals are accumulated in the head of prawn whereas the least is in the shell of prawn.

The Study of Concentrations of Some Heavy Metals in Relation to Size of Macrobrachium vollenhovenii (Herklots, 1857) in Asejire Lake, Oyo State, Southwest Nigeria

“…This study examined the concentration of selected heavy metals Manganese (Mn), Zinc (Zn), Lead (Pb), Copper (Cu), and Cadmium (Cd) in the tissue of Macrobrachium vollenhovenii from Asejire Lake, southwest Nigeria in relation to their body size (weight and length). The result of this study revealed that Mn, Zn, Pb, Cu and Cd were all present, in different concentrations, in the body tissue of M. vollenhovenii, and this is in accord with the results of earlier studies [6,12,19,24,25]. From this study, Zinc had the highest concentration (105.31±2.40) and Cadmium with the lowest concentration (0.82 ± 0.07mg/Kg) in the tissue of the M. vollenhovenii, as also reported by [24].…”

“…Copper, an essential micronutrient for fish and aquatic life, is also widely used as an effective algaecide and molluscicide [11]. This metal is introduced into the aquatic environment through municipal waste waters, manure, fertilizers, antifouling paints and industrial wastes [12]. Despite its important role in the growth of most aquatic organisms, copper may become toxic to aquatic organisms when the level exceeds a specific threshold [13].…”

“…Organic lead compounds are extensively used as an additive in petrol and this releases Pb, which is not easily biodegradable, into the aquatic environment through drainage and surface runoffs [8]. Lead is a cumulative poison which inhibits the synthesis of hem in organisms where it interferes with the effective utilization of iron and blood circulation [12]. Manganese plays an important biological role in organisms, however, excess amount of manganese is toxic and the nervous system has been reported to be the most vulnerable.…”

Potentially toxic elements in consumed indoor shrimp farming associated with diet, water and sediment levels: bioaccumulation in head and body tissues in relation to biometric parameters

“…The decision is based on a 2021 scienti c report from the European Food Safety Authority (EFSA) and EU rules follow the Codex Alimentarius maximum level of 0.5 mg/kg for total As. Our mean As contents are much higher than those detected in Bangladesh with 0.04 mg kg − 1(Sultana et al 2022) or Malaysia with 0.46 mg kg − 1(Lee et al 2017). However, we must highlight the mean values of 26.9 mg kg − 1 found on shrimp farms in southern China(Wu et al 2017).…”

“…(Lee et al 2017) or Bangladesh (Cu 9.43 mg kg − 1 and Zn 18.89 mg kg − 1 )(Sultana et al. 2022), and fall within the range for those observed in the Guangdong area of China (Cu 24.26 mg kg − 1 and Zn 171.56 mg kg − 1 ) (Wu and Yang 2011) or Bangladesh (Cu 31 mg kg − 1 and Zn 43 mg kg − 1 ) (Dietrich and Ayers 2021), but are lower than those in Hong Kong (Cu 110 mg kg − 1 and Zn 90 mg kg − 1 ) (Cheung and Wong 2006).…”