英文摘要 |
Sharks are apex predators in the marine ecosystem and they play an important role in the system. The global shark catch peaked around 2000 and overexploitation resulted in the decline of shark stocks. Therefore, shark conservation and management have attracted great attention in recent years. The Food and Agriculture Organization United Nations (FAO) announced the international Plan of Action - Sharks in 1999, International Union for Conservation of Nature (IUCN) and Convention on International Trade in Endangered Species of Wild Flora and Fauna (CITES) also took a series shark conservation actions by revising the status of shark species on Red List and putting several commercial shark species on Appendix II list. Regional Fisheries Management Organizations (RFMOs) also conducted stock assessment of key shark species and implemented shark management measures such as ban retention of certain species. To meet the criteria of international shark management and conservation, Taiwan also announced the National Plan of Action - Sharks, shark-fin attached measure, and shark fin import management act as well as banned retention of the silky and oceanic whitetip shark. In addition, the Fisheries Agency also monitored our far sea fishing vessels via an integrated vessel monitoring system (VMS) and electronic logbook. To ensure the sustainability of shark resource, the study on bycatch and stock status is urgently needed. |