Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/58415
Title: Historical photographs of captures of recreational fishers indicate overexploitation of nearshore resources at an oceanic island
Authors: Jimenez-Alvarado, David
Sarmiento Lezcano, Airam Nauzet 
Guerra-Marrero, Airam
Tuya, Fernando 
Santana del Pino, Ángelo 
Sealey, Michael J.
Castro Hernández, José Juan 
UNESCO Clasification: 240119 Zoología marina
Keywords: Atlantic Ocean
Grouper
Overexploitation
Recreational fisheries
Spearfishing, et al
Issue Date: 2019
Journal: Journal of Fish Biology 
Conference: Annual Symposium of the Fisheries-Society-of-the-British-Isles (FSBI) - The Sustainable Use and Exploitation of Fishes 
Abstract: In this study, we used a historical collection of photographs taken by recreational fishers from 1940 to 2014, at the island of Gran Canaria, to show both a significant decrease in the mean total length of Epinephelus marginatus and a concurrent change in the composition of captures. Before 1980, the mean total length of fish caught and photographed was c. 100 cm, while after 2009 this was typically < 40 cm. Before 1980, the predominant captured species was E. marginatus (an apex predator), but currently the majority of catches are of omnivorous species, in particular the parrotfish, Sparisoma cretense and seabreams Diplodus spp. Overall, integration of these results indicates a qualitative and quantitative variation in captures of recreational fishers, probably as a sign of change in ecological balances and the overfished status of many target species.
URI: http://hdl.handle.net/10553/58415
ISSN: 0022-1112
DOI: 10.1111/jfb.13969
Source: Journal Of Fish Biology [ISSN 0022-1112], v. 94 (6), p. 857-864
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