Further observations on a hypothecal pore in the genus Protoperidinium Bergh (Dinoflagellata)
The data on 21 Protoperidinium species (including 8 species assigned to the genus Peridinium, whichsupposedly also belong to the genus Protoperidinium) with a hypothecal pore on the first postcingular plate aresummarized. The hypothecal pore is shown to be present not only in the species with the fi...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | México |
| Institución: | Universidad Veracruzana |
| Repositorio: | Redalyc-UV |
| OAI Identifier: | oai:redalyc.org:57813404 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=57813404 |
| Access Level: | acceso abierto |
| Palabra clave: | Biología Dinoflagellates hypothecal pore Protoperidinium thecal morphology |
| Sumario: | The data on 21 Protoperidinium species (including 8 species assigned to the genus Peridinium, whichsupposedly also belong to the genus Protoperidinium) with a hypothecal pore on the first postcingular plate aresummarized. The hypothecal pore is shown to be present not only in the species with the first apical plate of thepara-type, but also in some species with the meta-type. It is confirmed that the pore is almost exclusivelyassociated with the hexa second intercalary plate. The pore is thought to be present in closely related speciesand to be a reliable diagnostic feature to differentiate Protoperidinium species. At least five groups ofmorphologically similar and supposedly related taxa can be distinguished: (1) Protoperidinium affine, P. pallidumand P. pellucidum; (2) P. curvipes and P. variegatum; (3) P. diabolum and P. dodgei; (4) P. cruciferum, P. cf.cruciferum, Protoperidinium sp. 1 (meta-hexa) and Peridinium acutum; (5) P. ovum and Protoperidinium sp. 2(para-penta). |
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