Rapid formation of distinct hybrid lineages after secondary contact of two fish species (Cottus sp.)
Homoploid hybridization after secondary contact between related species can lead to mixtures of genotypes which have the potential for rapid adaptation to new environmental conditions. Here, we focus on a case where anthropogenic changes within the past 200 years have allowed the hybridization betwe...
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Veröffentlicht in: | Molecular ecology 2011-04, Vol.20 (7), p.1475-1491 |
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description | Homoploid hybridization after secondary contact between related species can lead to mixtures of genotypes which have the potential for rapid adaptation to new environmental conditions. Here, we focus on a case where anthropogenic changes within the past 200 years have allowed the hybridization between two fish species (Cottus rhenanus and Cottus perifretum) in the Netherlands. Specifically, we address the question of the dynamics of the emergence of these hybrids and invasion of the river systems. Using a set of 81 mostly ancestry‐informative SNP markers, as well as broad sample coverage in and around the area of the initial contact, we find a structured hybrid swarm with at least three distinct hybrid lineages that have emerged out of this secondary contact situation. We show that genetically coherent groups can occur at geographically distant locations, while geographically adjacent groups can be genetically different, indicating that some form of reproductive isolation between the lineages is already effective. Using a newly developed modelling approach, we test the relative influence of founding admixture, drift and migration on the allele compositions of the sampling sites. We find that the allele frequency distributions can best be explained if continued gene flow between the parental species and the hybrid lineages is invoked. Genome mapping of the invasive lineage in the Rhine shows that major chromosomal rearrangements were not involved in creating this distinct lineage. Our results show that hybridization after secondary contact can quickly lead to multiple independent new lineages that have the capacity to form hybrid species. |
doi_str_mv | 10.1111/j.1365-294X.2010.04997.x |
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Here, we focus on a case where anthropogenic changes within the past 200 years have allowed the hybridization between two fish species (Cottus rhenanus and Cottus perifretum) in the Netherlands. Specifically, we address the question of the dynamics of the emergence of these hybrids and invasion of the river systems. Using a set of 81 mostly ancestry‐informative SNP markers, as well as broad sample coverage in and around the area of the initial contact, we find a structured hybrid swarm with at least three distinct hybrid lineages that have emerged out of this secondary contact situation. We show that genetically coherent groups can occur at geographically distant locations, while geographically adjacent groups can be genetically different, indicating that some form of reproductive isolation between the lineages is already effective. Using a newly developed modelling approach, we test the relative influence of founding admixture, drift and migration on the allele compositions of the sampling sites. We find that the allele frequency distributions can best be explained if continued gene flow between the parental species and the hybrid lineages is invoked. Genome mapping of the invasive lineage in the Rhine shows that major chromosomal rearrangements were not involved in creating this distinct lineage. 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Here, we focus on a case where anthropogenic changes within the past 200 years have allowed the hybridization between two fish species (Cottus rhenanus and Cottus perifretum) in the Netherlands. Specifically, we address the question of the dynamics of the emergence of these hybrids and invasion of the river systems. Using a set of 81 mostly ancestry‐informative SNP markers, as well as broad sample coverage in and around the area of the initial contact, we find a structured hybrid swarm with at least three distinct hybrid lineages that have emerged out of this secondary contact situation. We show that genetically coherent groups can occur at geographically distant locations, while geographically adjacent groups can be genetically different, indicating that some form of reproductive isolation between the lineages is already effective. Using a newly developed modelling approach, we test the relative influence of founding admixture, drift and migration on the allele compositions of the sampling sites. We find that the allele frequency distributions can best be explained if continued gene flow between the parental species and the hybrid lineages is invoked. Genome mapping of the invasive lineage in the Rhine shows that major chromosomal rearrangements were not involved in creating this distinct lineage. Our results show that hybridization after secondary contact can quickly lead to multiple independent new lineages that have the capacity to form hybrid species.</description><subject>Adaptability</subject><subject>adaptation</subject><subject>Adaptation, Physiological - genetics</subject><subject>Animals</subject><subject>Chromosome Mapping</subject><subject>Cottus</subject><subject>DNA, Mitochondrial - analysis</subject><subject>Fish</subject><subject>Freshwater</subject><subject>Gene Frequency</subject><subject>Genetic Markers</subject><subject>Genetic Speciation</subject><subject>Genotype</subject><subject>Genotype & phenotype</subject><subject>Humans</subject><subject>Hybridization</subject><subject>Hybridization, Genetic</subject><subject>Models, Genetic</subject><subject>Netherlands</subject><subject>Perciformes - genetics</subject><subject>Polymorphism, Single Nucleotide</subject><subject>Rivers</subject><subject>speciation</subject><issn>0962-1083</issn><issn>1365-294X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkUuP0zAUhS0EYjoDfwFZbIBFgp-xvWAxKvNAFJBGINhZTuwwLmlcbEfT_nscOnTBBry5tu93jnTvAQBiVONyXq9rTBteEcW-1QSVX8SUEvXuAVgcGw_BAqmGVBhJegJOU1ojhCnh_DE4IZjw2WgB7I3Zegv7EDcm-zDC0EPrU_Zjl-Htvo2lOfjRme8uQdNnF2FyXRitiXtYajaFK5p8F2Dv0y1MW9f5wr5chpynVN71qyfgUW-G5J7e1zPw5fLi8_K6Wn26erc8X1Udl1hUCqOGKdo3lJC2sbhFrZQKY26IbAiyRBmKFMcdEwxx2wtGBeJdq4QkVnFEz8CLg-82hp-TS1lvfOrcMJjRhSlp2SguCWf43ySXDAsqRCGf_0WuwxTHMsYMlY3yhhdIHqAuhpSi6_U2-k1ZkcZIz4vWaz0Ho-dg9JyY_p2Y3hXps3v_qd04exT-iagAbw7AnR_c_r-N9YeL5Xwr-uqgL6m63VFv4g_dlAm5_vrxSl_T1Xt685bpFf0FTgqxNw</recordid><startdate>201104</startdate><enddate>201104</enddate><creator>STEMSHORN, KATHRYN C.</creator><creator>REED, FLOYD A.</creator><creator>NOLTE, ARNE W.</creator><creator>TAUTZ, DIETHARD</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7SS</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope><scope>F1W</scope><scope>H95</scope><scope>L.G</scope></search><sort><creationdate>201104</creationdate><title>Rapid formation of distinct hybrid lineages after secondary contact of two fish species (Cottus sp.)</title><author>STEMSHORN, KATHRYN C. ; REED, FLOYD A. ; NOLTE, ARNE W. ; TAUTZ, DIETHARD</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5817-9106493f6322b6d1b0b889115a28620d29a30951c47405df743705cb9782d9503</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Adaptability</topic><topic>adaptation</topic><topic>Adaptation, Physiological - genetics</topic><topic>Animals</topic><topic>Chromosome Mapping</topic><topic>Cottus</topic><topic>DNA, Mitochondrial - analysis</topic><topic>Fish</topic><topic>Freshwater</topic><topic>Gene Frequency</topic><topic>Genetic Markers</topic><topic>Genetic Speciation</topic><topic>Genotype</topic><topic>Genotype & phenotype</topic><topic>Humans</topic><topic>Hybridization</topic><topic>Hybridization, Genetic</topic><topic>Models, Genetic</topic><topic>Netherlands</topic><topic>Perciformes - genetics</topic><topic>Polymorphism, Single Nucleotide</topic><topic>Rivers</topic><topic>speciation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>STEMSHORN, KATHRYN C.</creatorcontrib><creatorcontrib>REED, FLOYD A.</creatorcontrib><creatorcontrib>NOLTE, ARNE W.</creatorcontrib><creatorcontrib>TAUTZ, DIETHARD</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Ecology Abstracts</collection><collection>Entomology Abstracts (Full archive)</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 1: Biological Sciences & Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><jtitle>Molecular ecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>STEMSHORN, KATHRYN C.</au><au>REED, FLOYD A.</au><au>NOLTE, ARNE W.</au><au>TAUTZ, DIETHARD</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid formation of distinct hybrid lineages after secondary contact of two fish species (Cottus sp.)</atitle><jtitle>Molecular ecology</jtitle><addtitle>Mol Ecol</addtitle><date>2011-04</date><risdate>2011</risdate><volume>20</volume><issue>7</issue><spage>1475</spage><epage>1491</epage><pages>1475-1491</pages><issn>0962-1083</issn><eissn>1365-294X</eissn><abstract>Homoploid hybridization after secondary contact between related species can lead to mixtures of genotypes which have the potential for rapid adaptation to new environmental conditions. Here, we focus on a case where anthropogenic changes within the past 200 years have allowed the hybridization between two fish species (Cottus rhenanus and Cottus perifretum) in the Netherlands. Specifically, we address the question of the dynamics of the emergence of these hybrids and invasion of the river systems. Using a set of 81 mostly ancestry‐informative SNP markers, as well as broad sample coverage in and around the area of the initial contact, we find a structured hybrid swarm with at least three distinct hybrid lineages that have emerged out of this secondary contact situation. We show that genetically coherent groups can occur at geographically distant locations, while geographically adjacent groups can be genetically different, indicating that some form of reproductive isolation between the lineages is already effective. Using a newly developed modelling approach, we test the relative influence of founding admixture, drift and migration on the allele compositions of the sampling sites. We find that the allele frequency distributions can best be explained if continued gene flow between the parental species and the hybrid lineages is invoked. Genome mapping of the invasive lineage in the Rhine shows that major chromosomal rearrangements were not involved in creating this distinct lineage. Our results show that hybridization after secondary contact can quickly lead to multiple independent new lineages that have the capacity to form hybrid species.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>21251111</pmid><doi>10.1111/j.1365-294X.2010.04997.x</doi><tpages>17</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Adaptability adaptation Adaptation, Physiological - genetics Animals Chromosome Mapping Cottus DNA, Mitochondrial - analysis Fish Freshwater Gene Frequency Genetic Markers Genetic Speciation Genotype Genotype & phenotype Humans Hybridization Hybridization, Genetic Models, Genetic Netherlands Perciformes - genetics Polymorphism, Single Nucleotide Rivers speciation |
title | Rapid formation of distinct hybrid lineages after secondary contact of two fish species (Cottus sp.) |
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