scholarly journals Conservation status of sea turtles in Spain (review of the period 2013-2018)

2021 ◽  
pp. 175-198
Author(s):  
Juan Antonio Camiñas ◽  
José Carlos Báez ◽  
Enrique Ayllón ◽  
Adolfo Marco ◽  
Luis Hernández-Sastre ◽  
...  

El presente documento revisa la situación y aporta nuevos datos para las tortugas marinas en España durante el periodo 2013-2018. Se revisa el estado de conservación para el periodo 2013-2018 en cada una de las demarcaciones marítimas españolas: Levante –Baleares y Estrecho-Alborán para el Mediterráneo, y Noratlántica, Sudatlántica y Macaronesia en aguas del océano Atlántico. Se incluyen análisis de tendencias, las presiones y amenazas que afectan a cada especie y bibliografía actualizada. Para Caretta caretta, se recopila la información de los nidos en las costas mediterráneas españolas desde 2013 hasta 2018 y los movimientos de juveniles nacidos en España, tras su liberación. This document reviews the situation and provides new data for sea turtles in Spain during the period 2013-2018. The conservation status for such period is reviewed in each of the Spanish maritime demarcations: Levante -Baleares and Estrecho-Alborán for the Mediterranean, and Noratlántica, Sudatlántica and Macaronesia in waters of the Atlantic Ocean. Analysis of trends, pressures and threats that affect each species and updated bibliography are included. For Caretta caretta, information is collected on nests on the Spanish Mediterranean coasts from 2013 to 2018 and the movements of juveniles born in Spain, after their release.

2006 ◽  
Vol 324 ◽  
pp. 281-285 ◽  
Author(s):  
P Casale ◽  
B Lazar ◽  
S Pont ◽  
J Tomás ◽  
N Zizzo ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Kimberly Smelker ◽  
Lauren Smith ◽  
Michael Arendt ◽  
Jeffrey Schwenter ◽  
David Rostal ◽  
...  

Vitellogenin is the egg yolk precursor protein produced by oviparous vertebrates. As endogenous estrogen increases during early reproductive activity, hepatic production of vitellogenin is induced and is assumed to be complete in female sea turtles before the first nesting event. Until the present study, innate production of vitellogenin has not been described in free-ranging sea turtles. Our study describes circulating concentrations of vitellogenin in loggerhead sea turtles (Caretta caretta) from the Northwest Atlantic Ocean. We collected blood samples from juveniles and adults via in-water captures off the coast of the Southeast USA from May to August, and from nesting females in June and July at Hutchinson Island, Florida. All samples were analyzed using an in-house ELISA developed specifically to measureCaretta carettavitellogenin concentration. As expected, plasma vitellogenin declined in nesting turtles as the nesting season progressed, although it still remained relatively elevated at the end of the season. In addition, mean vitellogenin concentration in nesting turtles was 1,000 times greater than that measured in samples from in-water captures. Our results suggest that vitellogenesis may continue throughout the nesting season, albeit at a decreasing rate. Further, vitellogenin detected in turtles captured in-water may have resulted from exposure to endocrine disrupting chemicals.


2007 ◽  
Vol 71 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Paolo Casale ◽  
Antonios D. Mazaris ◽  
Daniela Freggi ◽  
Roberto Basso ◽  
Roberto Argano

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