Marine & Environmental Sciences Faculty Articles
Deep-Diving and Diel Changes in Vertical Habitat Use by Caribbean Reef Sharks Carcharhinus perezi
ResearcherID
G-4080-2013
Document Type
Article
Publication Title
Marine Ecology Progress Series
ISSN
0171-8630
Publication Date
8-23-2007
Keywords
Satellite tracking, Depth range, Coral reef ecology, Marine Protected Area, Carcharhinidae
Abstract
Longline sampling (83 sets) supplemented with 6 pop-off archival transmitting (PAT) tag deployments were used to characterize vertical habitat use by Caribbean reef sharks Carcharhinus perezi at Glover's Reef atoll, Belize. Longline catch-per-unit-effort (CPUE) in 2 shallow reef habitats (lagoon <18 m depth, fore-reef <40 m depth) underwent significant nocturnal increases for sharks larger than 110 cm total length (TL), but not for smaller sharks. Nocturnal CPUE of small sharks appeared to increase in the lagoon and decrease on the fore-reef, suggestive of movements to avoid larger conspecifics. PAT tag deployments (7 to 20 d) indicate that large C. perezi generally increased the amount of time they spent in the upper 40 m of the water column during the night, and inhabited much greater depths and tolerated lower temperatures than previously described. The wide vertical (0 to 356 m) and temperature range (31 to 12.4°C) documented for this top-predator reveals ecological coupling of deep and shallow reef habitats and has implications for Marine Protected Area (MPA) design.
DOI
10.3354/meps06941
Volume
344
First Page
271
Last Page
275
NSUWorks Citation
Demian D. Chapman, Ellen K. Pikitch, Elizabeth A. Babcock, and Mahmood S. Shivji. 2007. Deep-Diving and Diel Changes in Vertical Habitat Use by Caribbean Reef Sharks Carcharhinus perezi .Marine Ecology Progress Series : 271 -275. https://nsuworks.nova.edu/occ_facarticles/370.
Comments
©Inter-Research 2007