Title

Bioaccumulation of cadmium and lead in penaeus monodon (Asian tiger shrimp) and Loligo duvauceli (Indian squid) of seawater of Cavite City, Cavite

Date of Completion

7-2019

Document Type

Thesis

Degree Name

Grade 12

Keywords

Biomagnification, chronic poisoning, bioaccumulation, Cadmium, Lead, heavy metals

Abstract

The continuous emission of pollutants into ecosystems has been linked to the heavy metals that are found in bodies of water. Pollutants tend to bioaccumulate in organisms such as fishes and crustacean and result in biomagnification of the heavy metals higher up the food chain. Sea water of Cavite city, Cavite is one of the most efficient suppliers of marine organisms for human consumption. So, studies to determine the level of heavy metals in different marine organisms in it is necessary. In this this investigation, Cadmium (Cd) and Lead (Pb) on Penaeus monodon (Asian tiger shrimp) and Loligo duvauceli (Indian squid) found in the sea water of Cavite City, Cavite are determined. The highest concentration of Cadmium among all the samples are observed in Penaeus monodon (Asian tiger shrimp) (4.34255 ppm) was significantly higher than that of Loligo duvauceli (Indian squid) (1.91373 ppm) exceeding the standard provisional tolerable weekly/monthly intake (PTWI/PTMI) from World Health Organization. However, there was no amount of Lead present in neither of the two species. The elevating concentration of Cadmium in edible tissues of the investigated species may be considered as an important warning signal for crustacean health and human consumption. Thus, precaution measures are necessary to be taken and further monitoring programs on the sea water of Cavite city should be conducted in order to prevent future heavy metal bioaccumulitation in marine organisms.

First Advisor

Pauline L. Cueno

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