ArticleProceedings. Biological sciences2015
Hybridization masks speciation in the evolutionary history of the Galápagos marine iguana.
Article in Proceedings. Biological sciences, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed.
- Endemic within endemics: the microbiota of the Galapagos marine iguanas.ISME communications · 2026Article
- Genomic and biogeographic patterns of endemic geckos in the Galapagos Islands reveal population structure and species delimitation on inhabited islands.Scientific reports · 2025Article
- Iguanas rafted more than 8,000 km from North America to Fiji.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Ultrastructural studies distinguish skin diversities among Galápagos iguanas.Biology direct · 2025Article
- Article
- Characterization of the gut microbiome and resistome of Galapagos marine iguanas (Amblyrhynchus cristatus) from uninhabited islands.Animal microbiome · 2022Article
- Nitrogen and carbon stable isotope analysis sheds light on trophic competition between two syntopic land iguana species from Galápagos.Scientific reports · 2022Article
- Proximate Drivers of Population-Level Lizard Gut Microbial Diversity: Impacts of Diet, Insularity, and Local Environment.Microorganisms · 2022Article
- Phylogeography and Prevalence of Hemoparasites (Apicomplexa: Eucoccidiorida) in Galápagos Marine Iguanas,Animals : an open access journal from MDPI · 2022Article
- Article
- No impact of a short-term climatic "El Niño" fluctuation on gut microbial diversity in populations of the Galápagos marine iguana (Amblyrhynchus cristatus).Die Naturwissenschaften · 2021Article
- Defining intraspecific conservation units in the endemic Cuban Rock Iguanas (Cyclura nubila nubila).Scientific reports · 2020Article
- Hybridizing salamanders experience accelerated diversification.Scientific reports · 2020Article
- The Design of an Energy Harvesting Wireless Sensor Node for Tracking Pink Iguanas.Sensors (Basel, Switzerland) · 2019Article
- Article
- Speciation among sympatric lineages in the genusPeerJ · 2018Article
- Article
- Article
- Ecological and evolutionary influences on body size and shape in the Galápagos marine iguana (Amblyrhynchus cristatus).Oecologia · 2016Article
- Single origin of the Mascarene stick insects: ancient radiation on sunken islands?BMC evolutionary biology · 2015Article
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10 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The effects of the direct interaction between hybridization and speciation-two major contrasting evolutionary processes--are poorly understood. We present here the evolutionary history of the Galápagos marine iguana (Amblyrhynchus cristatus) and reveal a case of incipient within--island speciation, which is paralleled by between-island hybridization. In-depth genome-wide analyses suggest that Amblyrhynchus diverged from its sister group, the Galápagos land iguanas, around 4.5 million years ago (Ma), but divergence among extant populations is exceedingly young (less than 50,000 years). Despite Amblyrhynchus appearing as a single long-branch species phylogenetically, we find strong population structure between islands, and one case of incipient speciation of sister lineages within the same island--ostensibly initiated by volcanic events. Hybridization between both lineages is exceedingly rare, yet frequent hybridization with migrants from nearby islands is evident. The contemporary snapshot provided by highly variable markers indicates that speciation events may have occurred throughout the evolutionary history of marine iguanas, though these events are not visible in the deeper phylogenetic trees. We hypothesize that the observed interplay of speciation and hybridization might be a mechanism by which local adaptations, generated by incipient speciation, can be absorbed into a common gene pool, thereby enhancing the evolutionary potential of the species as a whole.
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