PORT PHILLIP BAY


Comma Shrimp 

Dimorphostylis cottoni Hale, 1936

View scientific description and taxonomy

Scientific Details

See below for information.

Hale, H.M. (1945) Australian Cumacea No. 11 The family Diastylidae (Part 1). Transactions of the Royal Society of South Australia, 69, 173-211.

Taxonomy

Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Subclass:
Eumalacostraca
Superorder:
Peracarida
Order:
Cumacea
Family:
Diastylidae
Genus:
Dimorphostylis
Species:
cottoni

General Description

Carapace with at least 4 carinae on each side, between back end of frontal lobe and posterior margin. First pereopod long, with propodus much longer than carpus. Pleopods each with two rami, with plumose setae. First segment of endopod of uropod longer than 2nd and 3rd segments together. Females with exopod on 3rd maxilliped, without trace of exopods on 3rd and 4th pereopods. Telson present.

Biology

Cumaceans burrow into the surface of sandy and muddy sediments but can also be found in the sediment trapped among macroalgae. At night especially cumaceans can be active swimmers in the open water and this is probably where mating occurs. Food is obtained by filtering water just above the sediment and grazing on the surface of sand grains. Cumaceans can be dug out of sandy sediment but the most effective way of catching them is by attracting them to lights at night.

Habitat

From sand, silt and clay, at depths of 1?45 m.

Soft substrates

Distribution guide

Southern temperate oceans, including south-eastern Australia.

Species Group

Microcrustaceans Cumaceans

Depth

Shallow (1-30 m)
Deep ( > 30 m)

Water Column

On or near sea floor

Max Size

7 mm

Diet

Organic matter

Commercial Species

No

Global Dispersal

Native to Australia

Species Code

MoV 65

Conservation Status

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

Author

article author Taylor, J.

Dr. Jo Taylor is the Sciences Collections Online Coordinator at Museum Victoria.

Author

article author Poore, G.C.B.

Dr. Gary Poore is Principal Curator Emeritus at Museum Victoria.

citation

Cite this page as:
Taylor, J. & Poore, G.C.B., 2011, Comma Shrimp, Dimorphostylis cottoni, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 17 Aug 2017, http://portphillipmarinelife.net.au:8098/species/5284

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