Nest site selection by individual leatherback turtles (Dermochelys coriacea, Testudines:Dermochelyidae) in Tortuguero, Caribbean coast of Costa Rica
Fuente:
Redalyc
Salvato in:
| Autore principale: | |
|---|---|
| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad de Costa Rica
2015
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1876447771332968448 |
|---|---|
| author | Noga Neeman |
| author_facet | Noga Neeman |
| contents | Nest site selection by individual leatherback turtles (Dermochelys coriacea, Testudines:Dermochelyidae) in Tortuguero, Caribbean coast of Costa Rica Noga Neeman Emma Harrison Ingo S. Wehrtmann Federico Bolaños Biología nesting patterns nest distribution Dermochelys coriacea Scatter nest hypothesis nest site repeatability Nest site selection for individual leatherback sea turtles, Dermochelys coriacea, is a matter of dispute. Some authors suggest that a female will tend to randomly scatter her nests to optimize clutch survival at a highly dynamic beach, while others suggest that some site fidelity exists. It is also possible that both strategies exist, depending on the characteristics of each nesting beach, with stable beaches leading to repeating nest site selec - tions and unstable beaches leading to nest scattering. To determine the strategy of the Tortuguero population of D. coriacea , female site preference and repetition were determined by studying whether females repeat their nest zone choices between successive attempts and whether this leads to a correlation in hatching and emergence suc - cess of subsequent nests. Nesting data from 1997 to 2008 were used. Perpendicular to the coastline, open sand was preferred in general, regardless of initial choice. This shows a tendency to scatter nests and is consistent with the fact that all vertical zones had a high variability in hatching and emergence success. It is also consistent with nest success not being easily predictable, as shown by the lack of correlation in success of subsequent nesting attempts. Along the coastline, turtles showed a preference for the middle part of the studied section of beach, both at a population level and as a tendency to repeat their initial choice. Interestingly, this zone has the most artificial lights, which leads to slightly lower nest success (though not significantly so) and hatchling disorienta - tion. This finding merits further study for a possibly maladaptive trait and shows the need for increased control of artificial nesting on this beach. Rev. Biol. Trop. 63 (2): 491-500. Epub 2015 June 01. 2015 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44938603012 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.63 |
| format | Artículo científico |
| id | redalyc_44938603012 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Universidad de Costa Rica |
| spellingShingle | Nest site selection by individual leatherback turtles (Dermochelys coriacea, Testudines:Dermochelyidae) in Tortuguero, Caribbean coast of Costa Rica Noga Neeman Biología nesting patterns nest distribution Dermochelys coriacea Scatter nest hypothesis nest site repeatability Nest site selection by individual leatherback turtles (Dermochelys coriacea, Testudines:Dermochelyidae) in Tortuguero, Caribbean coast of Costa Rica Noga Neeman Emma Harrison Ingo S. Wehrtmann Federico Bolaños Biología nesting patterns nest distribution Dermochelys coriacea Scatter nest hypothesis nest site repeatability Nest site selection for individual leatherback sea turtles, Dermochelys coriacea, is a matter of dispute. Some authors suggest that a female will tend to randomly scatter her nests to optimize clutch survival at a highly dynamic beach, while others suggest that some site fidelity exists. It is also possible that both strategies exist, depending on the characteristics of each nesting beach, with stable beaches leading to repeating nest site selec - tions and unstable beaches leading to nest scattering. To determine the strategy of the Tortuguero population of D. coriacea , female site preference and repetition were determined by studying whether females repeat their nest zone choices between successive attempts and whether this leads to a correlation in hatching and emergence suc - cess of subsequent nests. Nesting data from 1997 to 2008 were used. Perpendicular to the coastline, open sand was preferred in general, regardless of initial choice. This shows a tendency to scatter nests and is consistent with the fact that all vertical zones had a high variability in hatching and emergence success. It is also consistent with nest success not being easily predictable, as shown by the lack of correlation in success of subsequent nesting attempts. Along the coastline, turtles showed a preference for the middle part of the studied section of beach, both at a population level and as a tendency to repeat their initial choice. Interestingly, this zone has the most artificial lights, which leads to slightly lower nest success (though not significantly so) and hatchling disorienta - tion. This finding merits further study for a possibly maladaptive trait and shows the need for increased control of artificial nesting on this beach. Rev. Biol. Trop. 63 (2): 491-500. Epub 2015 June 01. 2015 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44938603012 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.2 Vol.63 |
| title | Nest site selection by individual leatherback turtles (Dermochelys coriacea, Testudines:Dermochelyidae) in Tortuguero, Caribbean coast of Costa Rica |
| topic | Biología nesting patterns nest distribution Dermochelys coriacea Scatter nest hypothesis nest site repeatability |
| url | https://www.redalyc.org/articulo.oa?id=44938603012 |