Efecto de una infección de hongos "Chytridiales" ("Phycomycetes") sobre una población natural del alga "Fotterella tetrachlorelloides" Buck "Tetrachlorelloides" Buck ("Chlorophyceae", "Oocystaceae")
- Araúzo Sánchez, María de las Mercedes
- Álvarez Cobelas, Miguel
- Rubio Olmo, Angel
ISSN: 0211-1322
Année de publication: 1987
Volumen: 44
Número: 2
Pages: 199-209
Type: Article
D'autres publications dans: Anales del Jardín Botánico de Madrid
Résumé
A study of chytrid infection on a wild phytoplankton population of the colonial species Fotterella tetrachlorelloides (Chlorophyceae, Oocystaceae) living in an eutrophic reservoir (El Vellón, Madrid) during the stagnation period has been undertaken. A dramatic decay of the Fotterella population was seen in connection with fungal development on it, as well as a diminishing number of algal cells per colony. Parasitic fungi peaked as host population stopped growing, fungal resting stages beginning to develop at the same time. Fotterella's water column distribution was partly an effect of the parasitic process, most of the infected colonies laying at the 1 m depth layer (81 % of surface irradiance).