Ectocarpus

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Ectocarpus
Ectocarpus siliculosus

Ectocarpus siliculosus

Systematics
without rank: Sar
without rank: Stramenopiles (stramenopiles)
without rank: Brown algae (Phaeophyceae)
without rank: Ectocarpales
Family : Ectocarpaceae
Genre : Ectocarpus
Scientific name
Ectocarpus
Lyngbye
Ectocarpus , sporophyte with unilocular reproductive organs
Ectocarpus , gametophyte with plurilocular reproductive organs

Ectocarpus is a genus of brown algae from the order of the Ectocarpales .

features

Ectocarpus species are yellowish brown, olive brown or dark brown in color. The thalli consist of tufts of finely branched threads made up of cells joined together in a row. The slack and slimy threads flood in the water for a long time or form loose wadding. With an adhesive organ made of lying, densely branched basal threads, they grow firmly ( benthically ) on rocks and stones or on larger algae ( epiphytic ). The genus is extremely variable in shape.

Ectocarpus shows a mostly isomorphic or slightly heteromorphic generation change , but there are also asexual forms.

Occurrence

Ectocarpus is widespread and may be found nearly worldwide, but is absent from Antarctica. The species grow from the intertidal zone to the sublittoral .

Systematics

The genus Ectocarpus was established in 1819 by Hans Christian Lyngbye (in: Tentamen hydrophytologiae danicae ). The type species is Ectocarpus siliculosus (Dillwyn) Lyngbye.

The genus currently includes around 75 (up to 100) species:

supporting documents

  1. ↑ a b c Wolfram Braune: Marine algae. A color guide to the common benthic green, brown and red algae of the world's oceans . Ruggell: Gantner, 2008, ISBN 978-3-906166-69-8 , p. 114.
  2. ↑ a b c Michael D. Guiry, GM Guiry: Ectocarpus. In: Algaebase - World-wide electronic publication, National University of Ireland, Galway , accessed October 10, 2013

Web links

Commons : Ectocarpus  - collection of images, videos and audio files