Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)

Abstract The colonisation of new suitable habitats is crucial for species survival at evolutionary scale under changing environmental conditions. However, colonisation potential may be limited by philopatry that facilitates exploiting successful habitats across generations. We examine the mechanisms...

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Autores principales: Carlos Carreras, Marta Pascual, Jesús Tomás, Adolfo Marco, Sandra Hochscheid, Juan José Castillo, Patricia Gozalbes, Mariluz Parga, Susanna Piovano, Luis Cardona
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Publicado: Nature Portfolio 2018
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Acceso en línea:https://doaj.org/article/6427309a90fa4db495d162b5bdc22f88
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spelling oai:doaj.org-article:6427309a90fa4db495d162b5bdc22f882021-12-02T15:07:45ZSporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)10.1038/s41598-018-19887-w2045-2322https://doaj.org/article/6427309a90fa4db495d162b5bdc22f882018-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-19887-whttps://doaj.org/toc/2045-2322Abstract The colonisation of new suitable habitats is crucial for species survival at evolutionary scale under changing environmental conditions. However, colonisation potential may be limited by philopatry that facilitates exploiting successful habitats across generations. We examine the mechanisms of long distance dispersal of the philopatric loggerhead sea turtle (Caretta caretta) by analysing 40 sporadic nesting events in the western Mediterranean. The analysis of a fragment of the mitochondrial DNA and 7 microsatellites of 121 samples from 18 of these nesting events revealed that these nests were colonising events associated with juveniles from distant populations feeding in nearby foraging grounds. Considering the temperature-dependent sex determination of the species, we simulated the effect of the incubation temperature and propagule pressure on a potential colonisation scenario. Our results indicated that colonisation will succeed if warm temperature conditions, already existing in some of the beaches in the area, extend to the whole western Mediterranean. We hypothesize that the sporadic nesting events in developmental foraging grounds may be a mechanism to overcome philopatry limitations thus increasing the dispersal capabilities of the species and the adaptability to changing environments. Sporadic nesting in the western Mediterranean can be viewed as potential new populations in a scenario of rising temperatures.Carlos CarrerasMarta PascualJesús TomásAdolfo MarcoSandra HochscheidJuan José CastilloPatricia GozalbesMariluz PargaSusanna PiovanoLuis CardonaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-14 (2018)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Carlos Carreras
Marta Pascual
Jesús Tomás
Adolfo Marco
Sandra Hochscheid
Juan José Castillo
Patricia Gozalbes
Mariluz Parga
Susanna Piovano
Luis Cardona
Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
description Abstract The colonisation of new suitable habitats is crucial for species survival at evolutionary scale under changing environmental conditions. However, colonisation potential may be limited by philopatry that facilitates exploiting successful habitats across generations. We examine the mechanisms of long distance dispersal of the philopatric loggerhead sea turtle (Caretta caretta) by analysing 40 sporadic nesting events in the western Mediterranean. The analysis of a fragment of the mitochondrial DNA and 7 microsatellites of 121 samples from 18 of these nesting events revealed that these nests were colonising events associated with juveniles from distant populations feeding in nearby foraging grounds. Considering the temperature-dependent sex determination of the species, we simulated the effect of the incubation temperature and propagule pressure on a potential colonisation scenario. Our results indicated that colonisation will succeed if warm temperature conditions, already existing in some of the beaches in the area, extend to the whole western Mediterranean. We hypothesize that the sporadic nesting events in developmental foraging grounds may be a mechanism to overcome philopatry limitations thus increasing the dispersal capabilities of the species and the adaptability to changing environments. Sporadic nesting in the western Mediterranean can be viewed as potential new populations in a scenario of rising temperatures.
format article
author Carlos Carreras
Marta Pascual
Jesús Tomás
Adolfo Marco
Sandra Hochscheid
Juan José Castillo
Patricia Gozalbes
Mariluz Parga
Susanna Piovano
Luis Cardona
author_facet Carlos Carreras
Marta Pascual
Jesús Tomás
Adolfo Marco
Sandra Hochscheid
Juan José Castillo
Patricia Gozalbes
Mariluz Parga
Susanna Piovano
Luis Cardona
author_sort Carlos Carreras
title Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
title_short Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
title_full Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
title_fullStr Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
title_full_unstemmed Sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (Caretta caretta)
title_sort sporadic nesting reveals long distance colonisation in the philopatric loggerhead sea turtle (caretta caretta)
publisher Nature Portfolio
publishDate 2018
url https://doaj.org/article/6427309a90fa4db495d162b5bdc22f88
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