PORT PHILLIP BAY


Brown Seaweed 

Perithalia caudata

View scientific description and taxonomy

Scientific Details

Main information sources:
Womersley, H.B.S., (1984-2003). The Marine Benthic Flora of Southern Australia. Part 1-3d. Govt. Printer, South Australia.
Baldock, R.N. 2010. Algae Revealed. South Australian State Herbarium. Website.
AlgaeBase. Website.

Taxonomy

Phylum:
Ochrophyta
Subphylum:
Phaeista
Superclass:
Fucistia
Class:
Phaeophyceae
Order:
Sporochnales
Family:
Sporochnaceae
Genus:
Perithalia
Species:
caudata

General Description

Formed of a cluster of sub-parallel filaments or branches (fasciculate) with numerous straight main axes with long straight secondary axes (laterals) arranged in a radial pattern. Apical tips are blunt or enlarged and round. Can have filament-like hairs near tip. Holdfast disc-like (discoid) to lobed with wart-like growths (verrucose). Dark brown. Up to 50 cm long (thallus).

Biology

Small caprellid crustaceans, Paraproto tasmaniensis, attach to this alga. Unique organic compounds called phenols have been found in this seaweed. Similar phenols are used as a precursor for materials such as plastics.

Habitat

Subtidal rocky reef, rough water coasts, to depth of 15 m.

Reefs

Distribution guide

Australia.

Species Group

Seaweeds and seagrasses Brown algae

Depth

Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

50 cm

Diet

Photosynthetic - sunlight

Commercial Species

No

Global Dispersal

Native to Australia

Identify

Conservation Status

  • DSE Advisory List : Not listed
  • EPBC Act 1999 : Not listed
  • IUCN Red List : Not listed

Author

article author Pocklington, Jacqui

Jacqui Pocklington is a Research Associate with expertise in algal taxonomy.

citation

Cite this page as:
Pocklington, Jacqui, 2011, Brown Seaweed, Perithalia caudata, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 26 Jul 2017, http://portphillipmarinelife.net.au:8098/species/12343

Text: creative commons cc by licence