| Author | Di Beneditto, Ana Paula Madeira | |
| Author | Siciliano, Salvatore | |
| Author | Monteiro, Leandro Rabello | |
| Access date | 2018-05-22T18:47:10Z | |
| Available date | 2018-05-22T18:47:10Z | |
| Document date | 2017 | |
| Citation | DI BENEDITTO, Ana Paula Madeira; SICILIANO, Salvatore; MONTEIRO, Leandro Rabello. Herbivory level and niche breadth of juvenile green turtles (Chelonia mydas) in a tropical coastal area: insights from stable isotopes. Mar Biol., v.164:13, 13p, 2017. | pt_BR |
| ISSN | 0025-3162 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/26551 | |
| Language | eng | pt_BR |
| Publisher | Springer Verlag (Germany) | pt_BR |
| Rights | restricted access | |
| Subject in Portuguese | Nível herbívoro | pt_BR |
| Subject in Portuguese | amplitude de nicho | pt_BR |
| Subject in Portuguese | tartarugas verdes juvenis | pt_BR |
| Subject in Portuguese | área costeira tropical | pt_BR |
| Subject in Portuguese | Rio de Janeiro | pt_BR |
| Subject in Portuguese | Rio de Janeiro | pt_BR |
| Title | Herbivory level and niche breadth of juvenile green turtles (Chelonia mydas) in a tropical coastal area: insights from stable isotopes | pt_BR |
| Type | Article | |
| Abstract | In the present study, the herbivory level and the niche breadth of juvenile green turtles (Chelonia mydas) was investigated through stable isotope metrics in three geographically close foraging grounds (Búzios, Cabo Frio and Arraial do Cabo) located in a tropical coastal area at Rio de Janeiro State, southeastern Brazil (~23°S; 042°W). The green turtles sampled between 2009 and 2010 presented different δ15N values among the foraging grounds, with lower values in Cabo Frio; however, δ13C values were similar in green turtles from different areas. The green turtles recruited to neritic waters have a high herbivory level; despite an omnivorous behavior noted for individuals of the species from Búzios and Arraial do Cabo. Mixing model analysis highlighted Gracilaria sp., Sargassum vulgare and Gelidiella acerosa as the most assimilated food items. Niche breadth metrics presented lower values for green turtles from Cabo Frio, which is indicative of high fidelity to this foraging ground. The highest herbivory level was verified for turtles from Cabo Frio in comparison with Búzios and Arraial do Cabo, whose niche metrics show a more comprehensive use of the available food resources. In the study area, the niche breadth at a reduced spatial scale may reflect an intraspecific strategy to minimize competition allowing more individuals to use the foraging ground for a longer period. | pt_BR |
| Subject | Herbivory level | pt_BR |
| Subject | niche breadth | pt_BR |
| Subject | juvenil green turtles | pt_BR |
| Subject | Tropical coast area | pt_BR |
| Subject | Rio de Janeiro | pt_BR |
| Subject | Rio de Janeiro | pt_BR |
| e-ISSN | 1432-1793 | |
| Embargo date | 2030-01-01 | |
