PORT PHILLIP BAY


Bivalve Mollusc 

Lasaea australis (Lamarck, 1818)

View scientific description and taxonomy

Scientific Details

Members of this family are small to minute and demonstrate great variation in shell shape and external sculpture. Species often have a commensal relationship with other invertebrates including bivalves, crustaceans, echinoderms and worms. This single family is now recognised to include a number of groups which were formally given family status, including Lasaeidae, Leptonidae, Mysellidae and Montacutidae.

Taxonomy

Phylum:
Mollusca
Subphylum:
Conchifera
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Galeommatoidea
Family:
Galeommatidae
Genus:
Lasaea
Species:
australis

General Description

The shells of this species are variable, usually being small, quite solid, globular in shape and tinged with a distinctive deep pink purple. Exterior shell sculpture variable, some specimens have broad concentric ridges. Shell up to 5 mm across.

Biology

This species is resistant to desiccation when exposed to high temperatures or low humidity. Individuals live attached by threads (byssus) to the sea floor, often nestling among sessile invertebrates such as worm tubes and among the byssal threads of mussels.

Habitat

Mid-intertidal areas.

Coastal shores

Distribution guide

Southern Australia.

Species Group

Sea snails and shells Bivalves

Depth

Shore (0-1 m)
Shallow (1-30 m)

Water Column

On or near sea floor

Max Size

5 mm

Diet

Organic matter

Commercial Species

No

Global Dispersal

Recorded in Australia

Species Code

MoV 1586

Conservation Status

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

Author

article author Boyd, S.

Sue Boyd is an Honorary Associate in marine invertebrates at Museum Victoria.

citation

Cite this page as:
Boyd, S., 2011, Bivalve Mollusc, Lasaea australis, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 16 Dec 2017, http://portphillipmarinelife.net.au:8098/species/5617

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