LEAD (Pb) CONTENT AND STOMACH HISTOLOGICAL STRUCTURE IN TILAPIA (Oreochromis mossambicus) FISH ORGANS LIVED IN THE WATERS OF UPAL PT. ITDC

Abstrak

Nusa Dua is a tourism area with a comprehensive and integrated design for  international class tourist accommodation. Liquid waste  is managed in an integrated  Wastewater Management Unit (UPAL) by PT. ITDC. Hotels dispose of their liquid waste through collection pits which will be accumulated in UPAL ponds. The last three ponds are used as fish rearing ponds as bioindicator. The tilapia fish in the pond can live but it is not known how the histology and anatomy of the organs are, therefore, histological study is needed. Eight samples were taken radomly from each pond, namely pool number 2B and pool number 3. The variables observed were the lead (Pb) content in fish meat and tissue damage in the stomach organs. The average lead content in fish meat from pond 2B was 1.85 mg / kg, while from pond 3 was 1.24 mg / kg. The number of cells with karyorrhoeic nuclei and tissue desquamated epithelial cells in the stomach of tilapia fish (O. mossambicus) from pond 3 was significantly lower than in pond 2B. Transition from pond 2B to pond 3 reduced lead content and histological damage.