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Hartman JH, Corush J, Larson ER, Tiemann JS, Willink PW, Davis MA. Niche conservatism and spread explain introgression between native and invasive fish. Mol Ecol 2024; 33:e17363. [PMID: 38682794 DOI: 10.1111/mec.17363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/01/2024] [Accepted: 04/11/2024] [Indexed: 05/01/2024]
Abstract
Hybridisation can be an important driver of evolutionary change, but hybridisation with invasive species can have adverse effects on native biodiversity. While hybridisation has been documented across taxa, there is limited understanding of ecological factors promoting patterns of hybridisation and the spatial distribution of hybrid individuals. We combined the results of ecological niche modelling (ENM) and restriction site-associated DNA sequencing to test theories of niche conservatism and biotic resistance on the success of invasion, admixture, and extent of introgression between native and non-native fishes. We related Maxent predictions of habitat suitability based on the native ranges of invasive Eastern Banded Killifish (Fundulus diaphanus diaphanus Lesueur 1817) and native Western Banded Killifish (Fundulus diaphanus menona Jordan and Copeland 1877) to admixture indices of individual Banded Killifish. We found that Eastern Banded Killifish predominated at sites predicted as suitable from their ENM, consistent with niche conservatism. Admixed individuals were more common as Eastern Banded Killifish habitat suitability declined. We also found that Eastern Banded Killifish were most common at sites closest to the presumed source of this invasion, whereas the proportion of admixed individuals increased with distance from the source of invasion. Lastly, we found little evidence that habitat suitability for Western Banded Killifish provides biotic resistance from either displacement by, or admixture with, invasive Eastern Banded Killifish. Our study demonstrates that ENMs can inform conservation-relevant outcomes between native and invasive taxa while emphasising the importance of protecting isolated Western Banded Killifish populations from invasive conspecifics.
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Affiliation(s)
- Jordan H Hartman
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, USA
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
| | - Joel Corush
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
| | - Eric R Larson
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, USA
| | - Jeremy S Tiemann
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
| | - Philip W Willink
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
| | - Mark A Davis
- Department of Natural Resources and Environmental Sciences, University of Illinois, Urbana, Illinois, USA
- Illinois Natural History Survey, University of Illinois, Champaign, Illinois, USA
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Lopes F, Oliveira LR, Beux Y, Kessler A, Cárdenas-Alayza S, Majluf P, Páez-Rosas D, Chaves J, Crespo E, Brownell RL, Baylis AMM, Sepúlveda M, Franco-Trecu V, Loch C, Robertson BC, Peart CR, Wolf JBW, Bonatto SL. Genomic evidence for homoploid hybrid speciation in a marine mammal apex predator. SCIENCE ADVANCES 2023; 9:eadf6601. [PMID: 37134171 PMCID: PMC10156116 DOI: 10.1126/sciadv.adf6601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Hybridization is widespread and constitutes an important source of genetic variability and evolution. In animals, its role in generating novel and independent lineages (hybrid speciation) has been strongly debated, with only a few cases supported by genomic data. The South American fur seal (SAfs) Arctocephalus australis is a marine apex predator of Pacific and Atlantic waters, with a disjunct set of populations in Peru and Northern Chile [Peruvian fur seal (Pfs)] with controversial taxonomic status. We demonstrate, using complete genome and reduced representation sequencing, that the Pfs is a genetically distinct species with an admixed genome that originated from hybridization between the SAfs and the Galapagos fur seal (Arctocephalus galapagoensis) ~400,000 years ago. Our results strongly support the origin of Pfs by homoploid hybrid speciation over alternative introgression scenarios. This study highlights the role of hybridization in promoting species-level biodiversity in large vertebrates.
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Affiliation(s)
- Fernando Lopes
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil
- Laboratório de Ecologia de Mamíferos, Universidade do Vale do Rio dos Sinos, São Leopoldo, Brazil
- Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
| | - Larissa R Oliveira
- Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland
- Grupo de Estudos de Mamíferos Aquáticos do Rio Grande do Sul (GEMARS), Torres, Brazil
| | - Yago Beux
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil
| | - Amanda Kessler
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil
| | - Susana Cárdenas-Alayza
- Centro para la Sostenibilidad Ambiental, Universidad Peruana Cayetano Heredia, Lima, Peru
- Departamento de Ciencias Biológicas y Fisiológicas, Facultad de Ciencias y Filosofía, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Patricia Majluf
- Centro para la Sostenibilidad Ambiental, Universidad Peruana Cayetano Heredia, Lima, Peru
| | - Diego Páez-Rosas
- Colegio de Ciencias Biológicas y Ambientales, COCIBA, Universidad San Francisco de Quito, Quito, Ecuador
- Dirección del Parque Nacional Galápagos, Oficina Técnica San Cristobal, Islas Galápagos, Ecuador
| | - Jaime Chaves
- Colegio de Ciencias Biológicas y Ambientales, COCIBA, Universidad San Francisco de Quito, Quito, Ecuador
- Galapagos Science Center, Puerto Baquerizo Moreno, Ecuador
- Department of Biology, San Francisco State University, 1800 Holloway Ave, San Francisco, CA, USA
| | - Enrique Crespo
- Laboratório de Mamíferos Marinos, CESIMAR - CCT CENPAT, CONICET, Puerto Madryn, Argentina
| | - Robert L Brownell
- Southwest Fisheries Science Center, NOAA Fisheries, La Jolla, CA, USA
| | | | - Maritza Sepúlveda
- Centro de Investigación y Gestión de Recursos Naturales (CIGREN), Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Valentina Franco-Trecu
- Departamento de Ecología y Evolución, Facultad de Ciencias, Universidad de la República, Montevideo, Uruguay
| | - Carolina Loch
- Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | | | - Claire R Peart
- Division of Evolutionary Biology, LMU Munich, München, Germany
| | - Jochen B W Wolf
- Division of Evolutionary Biology, LMU Munich, München, Germany
| | - Sandro L Bonatto
- Escola de Ciências da Saúde e da Vida, Pontifícia Universidade Católica do Rio Grande do Sul, PUCRS, Porto Alegre, Brazil
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Hörandl E. Novel Approaches for Species Concepts and Delimitation in Polyploids and Hybrids. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11020204. [PMID: 35050093 PMCID: PMC8781807 DOI: 10.3390/plants11020204] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/07/2022] [Accepted: 01/10/2022] [Indexed: 05/08/2023]
Abstract
Hybridization and polyploidization are important processes for plant evolution. However, classification of hybrid or polyploid species has been notoriously difficult because of the complexity of processes and different evolutionary scenarios that do not fit with classical species concepts. Polyploid complexes are formed via combinations of allopolyploidy, autopolyploidy and homoploid hybridization with persisting sexual reproduction, resulting in many discrete lineages that have been classified as species. Polyploid complexes with facultative apomixis result in complicated net-work like clusters, or rarely in agamospecies. Various case studies illustrate the problems that apply to traditional species concepts to hybrids and polyploids. Conceptual progress can be made if lineage formation is accepted as an inevitable consequence of meiotic sex, which is established already in the first eukaryotes as a DNA restoration tool. The turnaround of the viewpoint that sex forms species as lineages helps to overcome traditional thinking of species as "units". Lineage formation and self-sustainability is the prerequisite for speciation and can also be applied to hybrids and polyploids. Species delimitation is aided by the improved recognition of lineages via various novel -omics methods, by understanding meiosis functions, and by recognizing functional phenotypes by considering morphological-physiological-ecological adaptations.
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Affiliation(s)
- Elvira Hörandl
- Department of Systematics, Biodiversity and Evolution of Plants (with Herbarium), University of Goettingen, 37073 Göttingen, Germany
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