Evidencias de depredación en ostrácodos holocenos del Parque Nacional de Doñana(SO de España)
- Ruiz Muñoz, Francisco
- Abad de los Santos, Manuel
- González-Regalado Montero, María Luz
- Toscano Grande, Antonio
- Rodríguez Vidal, Joaquín
- Cáceres Puro, Luis Miguel
- Pozo Rodríguez, Manuel
- Carretero León, María Isabel
- Xiomara García, Edith
ISSN: 0556-655X
Année de publication: 2010
Volumen: 42
Número: 2
Pages: 267-273
Type: Article
D'autres publications dans: Revista española de micropaleontología
Résumé
[Predation on Holocene ostracods of the Doñana National Park (SW Spain)] This paper examines the evidences of predation observed in the study of more than 5,000 ostracod shells extracted from Holocene sediments of the Doñana National Park (SW Spain). These evidences are very rare, partly due to the high proportions of juvenile instars. Two types of evidences are distinguished (Oichnus paraboloides Bromley and Oichnus simplex Bromley), preferentially located in the central and anterior areas of the valves and attributed mainly to gastropods. These holes were found in adults and the last juvenile instars of species with smooth shells. There is not statistical correlation between: a) the abundance of ostracods and the number or percentage of predated shells; and b) the hole diameter and the size of the valves that contain them.