Reef Sharks Exhibit Site-Fidelity and Higher Relative Abundance in Marine Reserves on the Mesoamerican Barrier Reef

A study on the Belize Barrier Reef Reserve System reveals that reef sharks, particularly the Caribbean reef shark (Carcharhinus perezi), exhibit strong site-fidelity and higher relative abundance within marine reserves compared to fished reefs. This suggests that marine reserves can benefit reef shark populations by reducing fishing pressure or enhancing prey availability. Researchers used acoustic monitoring and baited remote underwater video surveys at Glover's Reef Marine Reserve (GRMR) and other sites to measure shark behavior and presence, confirming the positive effect of marine reserves on reef shark abundance while ruling out environmental factors as primary drivers.

Bond, M. E., Babcock, E. A., Pikitch, E. K., Abercrombie, D. L., Lamb, N. F., & Chapman, D. D. (2012). Reef Sharks Exhibit Site-Fidelity and Higher Relative Abundance in Marine Reserves on the Mesoamerican Barrier Reef. PLoS ONE, 7(3), e32983. https://doi.org/10.1371/journal.pone.0032983