Rapid divergence of mussel populations despite incomplete barriers to dispersal
| Autor: | Stefan Prost, Lydia L. Smith, Ke Bi, Abdul Hamid A. Toha, Diede L. Maas, Leontine E. Becking, Ludi Parwadani Aji, Rosemary G. Gillespie, Ellie E. Armstrong |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
marine biodiversity Gene Flow population genomics Population isolation by distance Biology priority effects 03 medical and health sciences Marine Animal Ecology Onderzoeksformatie Genetics Animals isolation by environment Temporal scales education Ecology Evolution Behavior and Systematics Local adaptation Isolation by distance education.field_of_study Genetic diversity Geography Temperature Genetic Variation Mariene Dierecologie Bivalvia Genetic divergence Lakes 030104 developmental biology Evolutionary biology Indonesia Genetic structure WIAS Biological dispersal ddRAD-seq Animal Distribution |
| Zdroj: | Molecular Ecology 27 (2018) 7 Molecular Ecology, 27(7), 1556-1571 |
| ISSN: | 1365-294X 0962-1083 |
| Popis: | Striking genetic structure among marine populations at small spatial scales is becoming evident with extensive molecular studies. Such observations suggest isolation at small scales may play an important role in forming patterns of genetic diversity within species. Isolation‐by‐distance, isolation‐by‐environment, and historical priority effects are umbrella terms for a suite of processes that underlie genetic structure, but their relative importance at different spatial and temporal scales remains elusive. Here, we use marine lakes in Indonesia to assess genetic structure and test relative roles of the processes in shaping genetic differentiation in populations of a bivalve mussel (Brachidontes sp.). Marine lakes are landlocked water bodies of similar age (6,000 – 10,000 years), but with heterogeneous environments and varying degrees of connection to the sea. Using a population genomic approach (double‐digest Restriction‐site Associated DNA sequencing), we show strong genetic structuring across populations (range FST: 0.07 – 0.24), and find limited gene flow through admixture plots. At large spatial scales (>1400km), a clear isolation‐by‐distance pattern was detected. At smaller spatial scales ( |
| Databáze: | OpenAIRE |
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