Temporal trends in the by-catch of loggerhead turtles Caretta caretta in the Mediterranean Sea: Reply to Báez et al. (2014)

2014 ◽  
Vol 504 ◽  
pp. 303-304 ◽  
Author(s):  
I Álvarez de Quevedo ◽  
M San Félix ◽  
L Cardona
Keyword(s):  
Mediterranean Sea ◽  
Temporal Trends ◽  
Caretta Caretta ◽  
Loggerhead Turtles ◽  
The Mediterranean ◽  
By Catch

By-catch frequency and size differentiation in loggerhead turtles as a function of surface longline gear type in the western Mediterranean Sea

2013 ◽  
Vol 93 (5) ◽  
pp. 1423-1427 ◽  
Author(s):  
José Carlos Báez ◽  
David Macías ◽  
Juan Antonio Camiñas ◽  
José María Ortiz de Urbina ◽  
Salvador García-Barcelona ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Sea Turtle ◽  
Western Mediterranean ◽  
Catch Per Unit Effort ◽  
Size Selectivity ◽  
Loggerhead Turtles ◽  
The Mediterranean ◽  
By Catch ◽  
Catch Rates ◽  
The Impact

Fisheries by-catch is considered to be a major threat to loggerhead turtles in the Mediterranean Sea. Technical differences in both gear configurations (e.g. hook and bait type) and fisheries operations carried out by the Spanish Mediterranean surface longline fleet could have an effect on by-catch rates and size selectivity. The aim of the present study was to test the differences in by-catch per unit effort and body size of loggerhead sea turtles caught using different gear types in the Mediterranean surface longline fishery. Our results suggest that differences in the gear type used have an effect on catch rates and size selectivity. Thus, surface longliners targeting albacore (LLALB) using smaller hooks tend to capture smaller loggerheads but have the highest by-catch per unit of effort (BPUE), whereas other longlines, such as surface longliners targeting bluefin tuna (LLJAP) and traditional surface longliners targeting swordfish (LLHB), using larger hooks tend to select the larger animals; moreover, LLHB had the lowest BPUE. Disproportionate rates of fisheries-induced mortality on certain size/age-classes can differentially affect sea turtle populations, as each sea turtle age-class contributes differently to current and future reproduction. Thus, fisheries management should not only be focusing on preserving the large juvenile and mature turtles, but also on reducing the total by-catch. Thus, we recommend encouraging the use of LLHB versus other surface gears. We suggest that it is very important to take into account the gear type (and its particular catch rates) when making inferences about the impact of longline fisheries on sea turtle populations.

Long-Term Tracking of Adult Loggerhead Turtles (Caretta caretta)in the Mediterranean Sea

2013 ◽  
Vol 47 (2) ◽  
pp. 227-231 ◽  
Author(s):  
Paolo Luschi ◽  
Resi Mencacci ◽  
Carola Vallini ◽  
Alessandro Ligas ◽  
Paolo Lambardi ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Loggerhead Turtles ◽  
The Mediterranean

Fine-scale distribution of juvenile Atlantic and Mediterranean loggerhead turtles (Caretta caretta) in the Mediterranean Sea

2013 ◽  
Vol 161 (3) ◽  
pp. 509-519 ◽  
Author(s):  
Marcel Clusa ◽  
Carlos Carreras ◽  
Marta Pascual ◽  
Stephen J. Gaughran ◽  
Susanna Piovano ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Fine Scale ◽  
Loggerhead Turtles ◽  
The Mediterranean

scholarly journals Helminth communities of loggerhead turtles (Caretta caretta) from Central and Western Mediterranean Sea: The importance of host's ontogeny

2010 ◽  
Vol 59 (3) ◽  
pp. 367-375 ◽  
Author(s):  
Mario Santoro ◽  
Francisco J. Badillo ◽  
Simonetta Mattiucci ◽  
Giuseppe Nascetti ◽  
Flegra Bentivegna ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Western Mediterranean ◽  
Western Mediterranean Sea ◽  
Helminth Communities ◽  
Loggerhead Turtles

Hemoparasitization by Theileria in the loggerheads Caretta caretta of the Mediterranean Sea

2010 ◽  
Vol 21 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Annalisa Di Santi ◽  
Filomena Basile ◽  
Luigi Ferretti ◽  
Flegra Bentivegna ◽  
Alessandra Pica
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
The Mediterranean

Epibiotic barnacles and crabs as indicators of Caretta caretta distribution and movements in the Mediterranean Sea

2004 ◽  
Vol 84 (5) ◽  
pp. 1005-1006 ◽  
Author(s):  
Paolo Casale ◽  
Daniela Freggi ◽  
Roberto Basso ◽  
Roberto Argano
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Shallow Waters ◽  
The Mediterranean

The occurrence of barnacles and crabs on Caretta caretta specimens found in the waters around Italy was analysed. In the seas surrounding Italy balanomorph barnacles occur mainly on turtles frequenting shallow waters and crabs display a strong west–east gradient. Patterns of turtle distribution and movements are proposed. The abundance of turtle-specific barnacles may be dependent on, and so an indicator of, turtle density.

Is the Spanish coast within the regular nesting range of the Mediterranean loggerhead sea turtle (Caretta caretta)?

2008 ◽  
Vol 88 (7) ◽  
pp. 1509-1512 ◽  
Author(s):  
Jesús Tomás ◽  
Manel Gazo ◽  
Carla Álvarez ◽  
Patricia Gozalbes ◽  
Diana Perdiguero ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Caretta Caretta ◽  
Sea Turtle ◽  
Mediterranean Coast ◽  
Loggerhead Sea Turtle ◽  
Spanish Coast ◽  
North Eastern ◽  
The Mediterranean

We report the information on loggerhead sea turtle (Caretta caretta) nesting events which occurred on the Spanish Mediterranean coast in 2006. Two clutches of 78 and 82 eggs were discovered in the provinces of Valencia (eastern Spain) and Barcelona (north-eastern Spain). We discuss the increasing number of reports of sea turtle nests in Spain within the context of the nesting range of this species in the Mediterranean Sea.

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