Limit or prohibit specific fishing methods
Overall effectiveness category Awaiting assessment
Number of studies: 1
Background information and definitions
Fishing can impact reptiles by catching individuals unintentionally or causing injury or death through entanglements in fishing gear. Applying restrictions to the use of specific fishing methods (which may include ‘static’ methods such as using lobster/crab pots and traps, or ‘mobile’ methods such as gill nets or trawl nets) in locations or seasons when reptiles are particularly vulnerable to capture may alleviate these threats.
For other studies that investigate the effect of ceasing or prohibiting fishing see Cease or prohibit all types of fishing and Cease or prohibit commercial fishing. For studies that investigate the effect of ceasing or prohibiting fishing at certain times see Establish temporary fishery closures.
Supporting evidence from individual studies
A site comparison study in 2009 on a flood plain with a variety of lakes and channels in Pará, Brazil (Miorando et al. 2013) found that areas that had community-based management (CBM) of fishing practices – including limiting use of gill-nets, seasonal fishing restrictions, protecting turtle nesting beaches and a ban on turtle trading – had more river turtles Podocnemis sextuberculata, Podocnemis unifilis and Podocnemis expansa than areas without CBM. The effect of different aspects of the management programme cannot be separated. Turtles were more abundant in areas with CBM (321 individuals) than in areas without CBM (33 individuals). For Podocnemis sextuberculata, abundance was higher in areas with CBM (14 individuals/1,000 m2 netting/12 hours) than in areas without (2 individuals/1,000 m2 netting/12 hours), and turtle biomass was also greater (with CBM: 20 kg/1,000 m2 netting/12 hours; without CBM: 3 kg/1,000 m2 netting/12 hours). The fishing agreement that formed the CBM programme had been in place for 20–30 years. While 13 communities in the area were a part of the fishing agreement, only two implemented the agreement. Turtle numbers were sampled at 14 sites (7 with CBM; 7 without CBM) in August–October 2009 using gill nets (15 nets/site; 215 m2 nets; 3 each of 5 mesh sizes) with help from local fishers.Study and other actions tested