Using 'shark dust' to monitor illegal trade

Researchers in Indonesia have developed a new tool to identify threatened and protected sharks processed in fish factories. The method involves DNA analysis of "shark dust," tiny fragments of skin and cartilage found in fish-processing plants. From 28 shark dust samples collected in Java Island, the researchers identified genetic sequences of 61 shark and ray species, with 84% belonging to CITES-listed species, indicating restrictions on international trade. The tool provides a low-cost and efficient way to monitor and enforce regulations in Indonesia's regulated but poorly monitored shark and ray trade. The findings were published in the journal Conservation Letters. (Mongabay)