<i>Paramecium bursaria</i>—A Complex of Five Cryptic Species: Mitochondrial DNA <i>COI</i> Haplotype Variation and Biogeographic Distribution
Ciliates are a diverse protistan group and many consist of cryptic species complexes whose members may be restricted to particular biogeographic locations. Mitochondrial genes, characterized by a high resolution for closely related species, were applied to identify new species and to distinguish clo...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
MDPI AG
2021
|
| Materias: | |
| Acceso en línea: | https://doaj.org/article/5baf9be21a1d4f02ba8fee0cdc9ad56a |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| Sumario: | Ciliates are a diverse protistan group and many consist of cryptic species complexes whose members may be restricted to particular biogeographic locations. Mitochondrial genes, characterized by a high resolution for closely related species, were applied to identify new species and to distinguish closely related morphospecies. In the current study, we analyzed 132 sequences of <i>COI</i> mtDNA fragments obtained from <i>P. bursaria</i> species collected worldwide. The results allowed, for the first time, to generate a network of <i>COI</i> haplotypes and demonstrate the relationships between <i>P. bursaria</i> strains, as well as to confirm the existence of five reproductively isolated haplogroups. The <i>P. bursaria</i> haplogroups identified in the present study correspond to previously reported syngens (R1, R2, R3, R4, and R5), thus we decided to propose the following binominal names for each of them: <i>P. primabursaria</i>, <i>P. bibursaria</i>, <i>P. tribursaria</i>, <i>P. tetrabursaria</i>, and <i>P. pentabursaria,</i> respectively. The phylogeographic distribution of <i>P. bursaria</i> species showed that <i>P. primabursaria</i> and <i>P. bibursaria</i> were strictly Eurasian, except for two South Australian <i>P. bibursaria</i> strains. <i>P. tribursaria</i> was found mainly in Eastern Asia, in two stands in Europe and in North America. In turn, <i>P. tetrabursaria</i> was restricted to the USA territory, whereas <i>P. pentabursaria</i> was found in two European localities. |
|---|