Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/184734
COMPARTIR / EXPORTAR:
SHARE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Island colonisation: Do species jump, or are they pushed? |
Autor: | Emerson, Brent C. CSIC ORCID ; García-Olivares, Víctor CSIC; López, Heriberto CSIC ORCID ; Patiño, Jairo CSIC ORCID ; Álvarez, Nadir; Machado, Antonio | Palabras clave: | Canary Islands Coleoptera Curculionidae Phylogeography mtDNA Dispersal Genetic admixture |
Fecha de publicación: | 18-jul-2016 | Citación: | II International Conference on Island Evolution, Ecology and Conservation (2016) | Resumen: | Colonisation of species from one island to another is a fundamental process for the establishment of island biotas within oceanic archipelagos, but exactly how species arrive is a little understood question. Phylogenies can tell us approximately when a colonisation event may have occurred, but not how. Sexually reproducing arthropods, particularly flightless species are interesting in this context. Excluding secondary transport by birds, which is likely important for ectoparasitic and perhaps in some cases non-ectoparasitic taxa, colonisation must be either windborne or waterborne. Windborne colonisation most probably involves single gravid females, as it is unlikely that wind-transported individuals would arrive within the geographic proximity of each other required for subsequent mating. Even allowing for a multiply mated female, successful establishment of a windborne colonist will be challenging due to low genetic variation and inbreeding. On the other hand, colonisation by oceanic rafting can potentially result in multiple individuals arriving within geographic proximity of each other. In this case subsequent mating among unrelated individuals may limit the negative genetic consequences of a founder event. To date we are not aware of any study that has been able to distinguish between these two mechanisms to explain the origin of flightless island arthropod species. Here we present evidence from a weevil radiation in the Canary Islands for oceanic rafting between islands, mediated by a novel mechanism, and discuss the implications for island biogeographic theory | Descripción: | Trabajo presentado en el II International Conference on Island Evolution, Ecology and Conservation, celebrado en Angra do Heroísmo, Islas Azores (Portugal) del 18 al 22 de julio de 2016. | URI: | http://hdl.handle.net/10261/184734 |
Aparece en las colecciones: | (IPNA) Comunicaciones congresos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 59,24 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
Page view(s)
229
checked on 17-abr-2024
Download(s)
46
checked on 17-abr-2024
Google ScholarTM
Check
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.