Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes
Abstract Under incomplete reproductive isolation, secondary contact of diverged allopatric lineages may lead to the formation of hybrid zones that allow to study recombinants over several generations as excellent systems of genomic interactions resulting from the evolutionary forces acting on certai...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Ecology and Evolution |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ece3.8527 |
| _version_ | 1797924592005677056 |
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| author | Tomasz Majtyka Bartosz Borczyk Maria Ogielska Matthias Stöck |
| author_facet | Tomasz Majtyka Bartosz Borczyk Maria Ogielska Matthias Stöck |
| author_sort | Tomasz Majtyka |
| collection | DOAJ |
| description | Abstract Under incomplete reproductive isolation, secondary contact of diverged allopatric lineages may lead to the formation of hybrid zones that allow to study recombinants over several generations as excellent systems of genomic interactions resulting from the evolutionary forces acting on certain genes and phenotypes. Hybrid phenotypes may either exhibit intermediacy or, alternatively, transgressive traits, which exceed the extremes of their parents due to epistasis and segregation of complementary alleles. While transgressive morphotypes have been examined in fish, reptiles, birds, and mammals, studies in amphibians are rare. Here, we associate microsatellite‐based genotypes with morphometrics‐based morphotypes of two tree frog species of the Hyla arborea group, sampled across a hybrid zone in Poland, to understand whether the genetically differentiated parental species also differ in morphology between each other and their hybrids and whether secondary contact leads to the evolution of intermediate or transgressive morphotypes. Using univariate approaches, explorative multivariate methods (principal component analyses) as well as techniques with prior grouping (discriminant function analyses), we find that morphotypes of both parental species and hybrids differ from each other. Importantly, hybrid morphotypes are neither intermediate nor transgressive but found to be more similar to H. orientalis than to H. arborea. |
| first_indexed | 2024-04-10T15:03:25Z |
| format | Article |
| id | doaj.art-b7361ad87a264f7b9e17e7441ff43c9f |
| institution | Directory Open Access Journal |
| issn | 2045-7758 |
| language | English |
| last_indexed | 2024-04-10T15:03:25Z |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj.art-b7361ad87a264f7b9e17e7441ff43c9f2023-02-15T09:06:07ZengWileyEcology and Evolution2045-77582022-01-01121n/an/a10.1002/ece3.8527Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypesTomasz Majtyka0Bartosz Borczyk1Maria Ogielska2Matthias Stöck3Department of Evolutionary Biology and Conservation of Vertebrates University of Wrocław Wrocław PolandDepartment of Evolutionary Biology and Conservation of Vertebrates University of Wrocław Wrocław PolandDepartment of Evolutionary Biology and Conservation of Vertebrates University of Wrocław Wrocław PolandLeibniz‐Institute of Freshwater Ecology and Inland Fisheries (IGB) Berlin GermanyAbstract Under incomplete reproductive isolation, secondary contact of diverged allopatric lineages may lead to the formation of hybrid zones that allow to study recombinants over several generations as excellent systems of genomic interactions resulting from the evolutionary forces acting on certain genes and phenotypes. Hybrid phenotypes may either exhibit intermediacy or, alternatively, transgressive traits, which exceed the extremes of their parents due to epistasis and segregation of complementary alleles. While transgressive morphotypes have been examined in fish, reptiles, birds, and mammals, studies in amphibians are rare. Here, we associate microsatellite‐based genotypes with morphometrics‐based morphotypes of two tree frog species of the Hyla arborea group, sampled across a hybrid zone in Poland, to understand whether the genetically differentiated parental species also differ in morphology between each other and their hybrids and whether secondary contact leads to the evolution of intermediate or transgressive morphotypes. Using univariate approaches, explorative multivariate methods (principal component analyses) as well as techniques with prior grouping (discriminant function analyses), we find that morphotypes of both parental species and hybrids differ from each other. Importantly, hybrid morphotypes are neither intermediate nor transgressive but found to be more similar to H. orientalis than to H. arborea.https://doi.org/10.1002/ece3.8527amphibianshybridizationhybrid zonesHyla arborea groupHylidaemorphometics |
| spellingShingle | Tomasz Majtyka Bartosz Borczyk Maria Ogielska Matthias Stöck Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes Ecology and Evolution amphibians hybridization hybrid zones Hyla arborea group Hylidae morphometics |
| title | Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| title_full | Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| title_fullStr | Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| title_full_unstemmed | Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| title_short | Morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| title_sort | morphometry of two cryptic tree frog species at their hybrid zone reveals neither intermediate nor transgressive morphotypes |
| topic | amphibians hybridization hybrid zones Hyla arborea group Hylidae morphometics |
| url | https://doi.org/10.1002/ece3.8527 |
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