Efecto de una infección de hongos "Chytridiales" ("Phycomycetes") sobre una población natural del alga "Fotterella tetrachlorelloides" Buck "Tetrachlorelloides" Buck ("Chlorophyceae", "Oocystaceae")

  1. Araúzo Sánchez, María de las Mercedes
  2. Álvarez Cobelas, Miguel
  3. Rubio Olmo, Angel
Zeitschrift:
Anales del Jardín Botánico de Madrid

ISSN: 0211-1322

Datum der Publikation: 1987

Ausgabe: 44

Nummer: 2

Seiten: 199-209

Art: Artikel

Andere Publikationen in: Anales del Jardín Botánico de Madrid

Zusammenfassung

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).