Heavy Metal (Pb, Hg) Contained in Blue Swimming Crab (Portunus pelagicus Linnaeus, 1758) in Cengkok Coastal Waters, Banten Bay, Indonesia

Abstract

Increasing number of industries and settlements in Banten Bay were subsequently followed by an increase in the amount of waste, whether in the form of solid, liquid or gas that can pollute the environment. One of the toxic pollutants is heavy metal.The entry mechanism of the heavy metal Mercury (Hg) and Lead (Pb) in body of the crab (Portunus pelagicus), namely through the process of digestion food. This study was conducted for 6 months, from March to August 2019, and aimed to analyze the heavy metal content levels (Pb and Hg) and the safe consumption level of the blue swimming crab (Portunus pelagicus) in the waters. The heavy metal concentration in the meat was measured through the AAS (Atomic Absorption Spectrophotometer) AA 7000 series Shimadzu. The analysis showed that the Pb and Hg contained in the blue swimming crab were still under the quality standards. Also, the bio-concentration factors of the blue swimming crab were low (<100). Water quality data observed as temperature, salinity, TSS, pH, dissolved oxygen, turbidity, and transparency stayed in the range of tolerable limits for the survival of marine organisms. Maximum weekly intake calculation refers to the tolerable limits issued by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). The JECFA recommends calculating the PTWI of each heavy metal if it accumulates in the human body for methyl mercury 1.6 μg.kg bw.week-1 and for lead not exceed 25 μg.kg bw.week-1. The safety consumption level of blue swimming crab from Cengkok Coastal water was 2.3 kg of meat.week-1 (for adults) and 0.6 kg of meat.week-1 (for children).

Heavy metals (Pb and Cd) contents in the seawater and sediment in Panjang and Pamujaan Besar Islands, Banten Bay, Indonesia

“…Those good parameters are salinity, pH, DO, BOD, and TAN (Table 2). This is in line with the previous studies conducted in the same area [24,25,26]. However, temperature and transparency parameters exceed the standard.…”

Heavy metal contents of Hg, Cd, Pb, and Cu in splendid ponyfish Eubleekeria splendens (Cuvier, 1829) meat in Banten Bay, Indonesia

“…This may be due to the longer duration of heavy metal exposure in big fish. Exposure to heavy metals for a long time can increase the accumulation of these heavy metals in aquatic biota [34]. The heavy metals in the water will accumulate in the fish body, and biomagnification occurs [35].…”

Infection Patterns of Helminth Parasites in Mackerel Tuna (Euthynnus affinis Cantor, 1849) from Banten Waters, Indonesia

“…For example, H. euthynni and many other monogeneans depend on water currents, light, and chemicals to find their hosts. With an area of 10 x 15 km and a shallow depth of <20 m (Febrianessa et al, 2020), Banten Bay will likely have fewer strong currents. However, more pollutants may be accumulated due to intense industrial activities (Wisha et al, 2015).…”

“…Several research activities in Banten waters have been conducted, i.e., to clarify environmental water conditions (heavy metals in sediments) (Wardani et al, 2020), heavy metals in crabs (Febrianessa et al, 2020), and heavy metals in mud crabs (Noviani et al, 2020). However, information about occuring helminth parasites in fish (especially mackerel tuna) has not been reported from these region before.…”