PORT PHILLIP BAY


Striped Shrimp 

Palaemon intermedius (Stimpson, 1860)

View scientific description and taxonomy

Scientific Details

Carapace smooth, with distinct branchiostegal spine on carapace edge (sometimes set back) and groove usually running back from carapace edge in a shallow arc, or over spine, or, into and over but not past (P. intermedius). Mandibular palp usually of 2 or 3 articles, but may be absent. Propodus of fifth pereopod with several transverse rows of setae on distal part of the posterior margin. First pleopod of male without or with rudimentary appendix interna on endopod.

Walker, T.M. & Poore, G.C.B. (2003) Rediagnosis of Palaemon and differentiation of south-eastern Australian species (Crustacea: Decapoda: Palaemonidae). Memoirs of Museum Victoria, 60, 243-256.

Taxonomy

Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Subclass:
Eumalacostraca
Superorder:
Eucarida
Order:
Decapoda
Suborder:
Pleocyemata
Infraorder:
Caridea
Family:
Palaemonidae
Genus:
Palaemon
Species:
intermedius

General Description

Rostrum with 7-10 dorsal teeth, usually 8, 2-3 posterior to orbit of the eye; 4-6 ventral teeth, usually 5. Branchiostegal spine falling short of carapace margin. Branchiostegal groove not running back along the carapace from hepatic spine. Fifth segment (carpus) of second leg (pereopod 2) longer than fourth segment (merus); fixed finger with cutting edge bearing 2 proximal teeth; 1 tooth between these on last segment (dactylus). Anteroventral corner of carapace square or slightly rounded. Distinct oblique and transverse red lines on carapace; few scattered red, olive and black chromatophores forming indistinct transverse lines on abdominal somites; antennule inner flagellum with definite red and white bars, persisting as purple bars in ethanol-preserved specimens. Up to 4 cm long.

Biology

This species is one of the most common shallow water shrimp found in southern Australia. It is most commonly found on muddy soft sediments especially in the shelter of seagrasses. When alive the shrimp is translucent, marked with fine purple-red lines running along the carapace and more sparsely on the abdomen. This species has been commonly referred to as Macrobrachium intermedium in the ecological literature but has since been placed in the genus Palaemon.

Habitat

Seagrass and algae, 0-22 m depth.

Soft substrates

Seagrass meadows

Reefs

Coastal shores

Distribution guide

Indo-west Pacific Oceans, including southern Australia.

Species Group

Prawns, shrimps, lobsters Shrimps

Depth

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

Water Column

On or near sea floor

Max Size

4 cm

Diet

Organic matter

Commercial Species

No

Global Dispersal

Recorded in Australia

Species Code

MoV 1001

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, Striped Shrimp, Palaemon intermedius, in Taxonomic Toolkit for marine life of Port Phillip Bay, Museum Victoria, accessed 23 Aug 2017, http://portphillipmarinelife.net.au:8098/species/5518

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