Journal article
Archipelago-Wide Patterns of Colonization and Speciation Among an Endemic Radiation of Galapagos Land Snails
JOURNAL OF HEREDITY, v 111(1)
Jan 2020
PMID: 31841140
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Newly arrived species on young or remote islands are likely to encounter less predation and competition than source populations on continental landmasses. The associated ecological release might facilitate divergence and speciation as colonizing lineages fill previously unoccupied niche space. Characterizing the sequence and timing of colonization on islands represents the first step in determining the relative contributions of geographical isolation and ecological factors in lineage diversification. Herein, we use genome-scale data to estimate timing of colonization in Naesiotus snails to the Galapagos islands from mainland South America. We test inter-island patterns of colonization and within-island radiations to understand their contribution to community assembly. Partly contradicting previously published topologies, phylogenetic reconstructions suggest that most Naesiotus species form island-specific clades, with within-island speciation dominating cladogenesis. Galapagos Naesiotus also adhere to the island progression rule, with colonization proceeding from old to young islands and within-island diversification occurring earlier on older islands. Our work provides a framework for evaluating the contribution of colonization and in situ speciation to the diversity of other Galapagos lineages.
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Details
- Title
- Archipelago-Wide Patterns of Colonization and Speciation Among an Endemic Radiation of Galapagos Land Snails
- Publication Details
- JOURNAL OF HEREDITY, v 111(1)
- Publisher
- OXFORD UNIV PRESS INC; CARY
- Number of pages
- 0
- Grant note
- This work was supported by grants from the National Geographic Society, the National Science Foundation (#1523540 to A.C.K. and #1751157 to C.E.P.), the American Malacological Society, the Western Society of Malacology, the Conchologists of America, and the Systematics Research Fund to C.E.P. Research reported in this publication was also supported by an Institutional Development Award (IDeA) from the National Institute of General Medical Sciences of the National Institutes of Health under grant number P30 GM103324. A.M.R. was supported by University of Idaho graduate fellowship in Bioinformatics and Computational Biology. T.M.L. was supported by a National Science Foundation Graduate Research Fellowship (DGE-1656518).
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000515118600008
- Scopus ID
- 2-s2.0-85079021360
- Other Identifier
- 991021860675804721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Evolutionary Biology
- Genetics & Heredity