Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species
Abstract We present a concept that explains the pattern of occurrence of widely distributed organisms with large chromosomal diversity, large or small molecular divergence, and the insufficiency or absence of morphological identity. Our model is based on cytogenetic studies associated with molecular...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Genética
2023-09-01
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| Series: | Genetics and Molecular Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000300106&lng=en&tlng=en |
| _version_ | 1827807136457949184 |
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| author | Karine Frehner Kavalco Rubens Pasa |
| author_facet | Karine Frehner Kavalco Rubens Pasa |
| author_sort | Karine Frehner Kavalco |
| collection | DOAJ |
| description | Abstract We present a concept that explains the pattern of occurrence of widely distributed organisms with large chromosomal diversity, large or small molecular divergence, and the insufficiency or absence of morphological identity. Our model is based on cytogenetic studies associated with molecular and biological data and can be applied to any lineage of sister species, chronospecies, or cryptic species. Through the evaluation of the karyotypic macrostructure, as the physical location of genes e satellites DNAs, in addition to phylogenetic reconstructions from mitochondrial and nuclear genes, per example, we have observed morphologically indistinguishable individuals presenting different locally fixed karyomorphs with phylogeographic discontinuity. The biological process behind this pattern is seen in many groups of cryptic species, in which variation lies mainly in the organization of their genomes but not necessarily in the ecosystems they inhabit or in their external morphology. It’s similar to the processes behind other events observed in the distribution of lineages. In this work, we explore the hypothesis of a process analogous to ecological-evolutionary radiation, which we called Chromosomal Radiation. Chromosomal Radiation can be adaptive or non-adaptive and applied to different groups of organisms. |
| first_indexed | 2024-03-11T21:51:48Z |
| format | Article |
| id | doaj.art-c3caa597e8fa4ba397d1cc45ea89336b |
| institution | Directory Open Access Journal |
| issn | 1678-4685 |
| language | English |
| last_indexed | 2024-03-11T21:51:48Z |
| publishDate | 2023-09-01 |
| publisher | Sociedade Brasileira de Genética |
| record_format | Article |
| series | Genetics and Molecular Biology |
| spelling | doaj.art-c3caa597e8fa4ba397d1cc45ea89336b2023-09-26T07:44:48ZengSociedade Brasileira de GenéticaGenetics and Molecular Biology1678-46852023-09-01461 suppl 210.1590/1678-4685-gmb-2023-0116Chromosomal Radiation: A model to explain karyotypic diversity in cryptic speciesKarine Frehner Kavalcohttps://orcid.org/0000-0002-4955-2792Rubens Pasahttps://orcid.org/0000-0002-3513-4071Abstract We present a concept that explains the pattern of occurrence of widely distributed organisms with large chromosomal diversity, large or small molecular divergence, and the insufficiency or absence of morphological identity. Our model is based on cytogenetic studies associated with molecular and biological data and can be applied to any lineage of sister species, chronospecies, or cryptic species. Through the evaluation of the karyotypic macrostructure, as the physical location of genes e satellites DNAs, in addition to phylogenetic reconstructions from mitochondrial and nuclear genes, per example, we have observed morphologically indistinguishable individuals presenting different locally fixed karyomorphs with phylogeographic discontinuity. The biological process behind this pattern is seen in many groups of cryptic species, in which variation lies mainly in the organization of their genomes but not necessarily in the ecosystems they inhabit or in their external morphology. It’s similar to the processes behind other events observed in the distribution of lineages. In this work, we explore the hypothesis of a process analogous to ecological-evolutionary radiation, which we called Chromosomal Radiation. Chromosomal Radiation can be adaptive or non-adaptive and applied to different groups of organisms.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000300106&lng=en&tlng=enStasipatric speciationchromosomal rearrangementskaryotypic polymorphismsgenomic plasticityadaptive radiation |
| spellingShingle | Karine Frehner Kavalco Rubens Pasa Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species Genetics and Molecular Biology Stasipatric speciation chromosomal rearrangements karyotypic polymorphisms genomic plasticity adaptive radiation |
| title | Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species |
| title_full | Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species |
| title_fullStr | Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species |
| title_full_unstemmed | Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species |
| title_short | Chromosomal Radiation: A model to explain karyotypic diversity in cryptic species |
| title_sort | chromosomal radiation a model to explain karyotypic diversity in cryptic species |
| topic | Stasipatric speciation chromosomal rearrangements karyotypic polymorphisms genomic plasticity adaptive radiation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572023000300106&lng=en&tlng=en |
| work_keys_str_mv | AT karinefrehnerkavalco chromosomalradiationamodeltoexplainkaryotypicdiversityincrypticspecies AT rubenspasa chromosomalradiationamodeltoexplainkaryotypicdiversityincrypticspecies |