Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/184958
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

Evidence for mega-landslides as drivers of island colonization

AuthorsGarcía-Olivares, Víctor; López, Heriberto CSIC ORCID ; Patiño, Jairo; Álvarez, Nadir; Machado, Antonio; Carracedo, Juan Carlos CSIC ORCID; Soler, Vicente CSIC ORCID; Emerson, Brent C. CSIC ORCID
KeywordsPhylogeography
Biogeography
Rafting
Long‐distance dispersal
Landslide
Invertebrate
Equilibrium theory
Canary Islands
Issue DateMay-2017
PublisherBlackwell Publishing
CitationJournal of Biogeography 44(5): 1053-1064 (2017)
Abstract[Aim] How non-dispersive taxa colonize islands is generalized as being by wind, or rafting, with the implicit assumption that such events involve one (wind) or a few (rafting) individuals. However, because of the evolutionary time-scale for colonization events, the fit of individual species to a conceptual model of wind or rafting is difficult to assess. Here, we describe an alternative testable geological model for inter-island colonization that can result in larger effective founding population sizes than traditionally accepted colonization mechanisms. We then test for the fit of genetic data to this model using weevils from the Laparocerus tessellatus species complex. [Location] Canary Islands. Methods: Using a combination of geological data for the Canary Islands, and mtDNA data from a weevil radiation within the Canary Islands, we test three species-level predictions for mega-landslides as drivers of oceanic rafting between islands and subsequent speciation: (1) colonization should involve multiple female lineages, (2) founding lineages should have a common geographical origin, consistent with a mega-landslide event, and (3) colonization direction should be consistent with ocean currents. [Results] Both individual-level and population-level analyses support a mega-landslide event as the driver of colonization from the island of Tenerife to La Palma. At least four female lineages colonized La Palma from Tenerife, with the geographical range of ancestral sequences to these four lineages describing the limits of the La Orotava mega-landslide in Tenerife. [Main conclusions] In the context of island biogeographical theory, mega-landslides may be an important driver of colonization, and subsequent lineage diversification. They provide a framework for hypothesis testing using genetic data from species, or closely related species, with ranges that encompass landslides and potential areas of colonization.
Publisher version (URL)https://doi.org/10.1111/jbi.12961
URIhttp://hdl.handle.net/10261/184958
DOI10.1111/jbi.12961
ISSN0305-0270
E-ISSN1365-2699
Appears in Collections:(IPNA) Artículos

Files in This Item:
File Description SizeFormat
Evidence_Olivares_Preprint_Art2017.pdf19,7 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work

SCOPUSTM   
Citations

14
checked on May 15, 2022

WEB OF SCIENCETM
Citations

17
checked on May 15, 2022

Page view(s)

332
checked on May 19, 2022

Download(s)

254
checked on May 19, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.