Fig. 1

Sampling site of four locations. Sites marked as PTN, STN, NST and SPR represent Pattani Bay, Satun, Nakhon Sri Thammarat and Samut Prakan provinces
Sampling site of four locations. Sites marked as PTN, STN, NST and SPR represent Pattani Bay, Satun, Nakhon Sri Thammarat and Samut Prakan provinces