Effects of poaching on Topshell Tectus niloticus population of Tubbataha Reefs Natural Park, Palawan, Philippines

A dramatic 75% decline in the topshell (Tectus niloticus) population at Tubbataha Reefs Natural Park between 2006 and 2008 was attributed to poaching, with abundance highest near intertidal zones (~1.5m depth) but significantly reduced at deeper sites (5m). The study, conducted in 2008 following illegal harvests in 2006–2007, revealed that 15 of 33 poaching cases since 2004 involved topshells, implicating 26 boats and 190 fishermen. Economic incentives and black-market demand drove the poaching, posing a threat to reef ecosystems. The research underscores the need for sustained law enforcement to curb further population decline.

Jontila, J. B., Gonzales, B., & Dolorosa, R. (2014). Effects of poaching on Topshell Tectus niloticus population of Tubbataha Reefs Natural Park, Palawan, Philippines. The Palawan Scientist, 6, 14–27. https://doi.org/10.69721/tps.j.2014.6.1.02