Taxonomía y distribución del género Hydrolithon (Foslie) Foslie (Corallinales, Rhodophyta) en México
Characters previously used in the description of the species from the genus Hydrolithon (Corallinales, Rhodophyta) were analyzed and described using Mexican specimens from Atlantic and Pacific coasts. Results showed differences and inconstancies of their use throughout the published records from Mex...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | México |
| Institución: | Universidad Autónoma Metropolitana |
| Repositorio: | Repositorio Institucional de la UAM Iztapalapa |
| Idioma: | español |
| OAI Identifier: | oai:bindani.izt.uam.mx:zc77sq30f |
| Acceso en línea: | https://doi.org/10.24275/uami.zc77sq30f |
| Access Level: | acceso abierto |
| Palabra clave: | info:eu-repo/classification/LEM/Rodolitos -- Clasificación info:eu-repo/classification/LEM/Corallinaceae -- Classification info:eu-repo/classification/LEM/Corallinaceae -- Clasificación info:eu-repo/classification/LEM/Red algae -- Classification info:eu-repo/classification/cti/3 |
| Sumario: | Characters previously used in the description of the species from the genus Hydrolithon (Corallinales, Rhodophyta) were analyzed and described using Mexican specimens from Atlantic and Pacific coasts. Results showed differences and inconstancies of their use throughout the published records from Mexico since 1960. In this paper sorne characters are defined as important to segregate species, among them are: habit, surface and construction of the thallus, symmetry, layers number in hypothallus and epithallus, organization of the hypothallus, trichocytes presence and arrangement, shape and arrangement of cells in the dorsal region, initial meristematic cells, shape and arrangement of conceptacles, chambers shape in sporangial conceptacles, cells shape and arrangement in the pore conceptacle, presence of columnella. The characters so evaluated allow to establish the presence of 8 species in Mexico: H. boergesenii, H. farinosum, H. onkodes, H. pachydermum, H. reinboldii, H. rupestre, H. somoense and H. superficiale. Hydrolithon farinosum is the one widely distributed on both coasts; in contrast, H. pachydermum and H. boergesenii are restricted to Southern Gulf of Mexico. 0n the other hand, H. rupestre and H. samoense were only located on the Pacific coast of Mexico. Detailed descriptions of each species, with photographs and distribution maps, are provided. This information is supplemented with a key and notes on habitat as well as taxonomic comments. |
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