Crangon allmanni

Researched By	Morvan Barnes	Data Supplied By	MarLIN
Refereed by	This information is not refereed
Taxonomy
Scientific name	Crangon allmanni	Common name	A shrimp
MCS Code	S1384	Recent Synonyms	See Smaldon et al. (1993) for comments on spelling
Phylum	Crustacea	Subphylum
Superclass		Class	Eumalacostraca
Subclass	Eucarida	Order	Decapoda
Suborder	Pleocyemata	Family	Crangonidae
Genus	Crangon	Species	allmanni
Subspecies
Additional Information
Taxonomy References	Howson & Picton, 1997, Hayward & Ryland, 1995b
General Biology
Growth form	Articulate	Feeding method	Predator, Scavenger
Mobility/Movement	Crawler, Burrower, Swimmer	Environmental position	Infaunal, Epifaunal, Epibenthic
Typical food types	Invertebrates including crustaceans, annelids and also molluscs, ophiuroids and foraminiferans	Habit	Free living
Bioturbator	Not relevant	Flexibility	Low (10-45 degrees)
Fragility	Fragile	Size	Small-medium(3-10cm)
Height	Not researched	Growth Rate	Not researched
Adult dispersal potential	Not researched	Dependency	Independent
Sociability	Solitary
Toxic/Poisonous?	No
Additional Information
Biology References	Hayward & Ryland, 1995b, Blahudka & Turkay, 2002, Allen, 1960, Burrows et al., 2003, Jayamanne, 1995, Fish & Fish, 1996
Distribution and Habitat
Distribution in Britain & Ireland	Found on all British and Irish coasts.
Global distribution	Found in north-west Europe from the coasts of Sweden to south-west Britain.
Biogeographic range	Temperate.	Depth range	From 10 m to 250 m depth.
Migratory	Non-migratory / Resident
Distribution Additional Information
Substratum preferences	Muddy gravel, Sandy mud, Muddy sand, Mud, Mixed, Gravelley sand, Gravelly mud	Physiographic preferences	Open coast, Offshore seabed, Strait / sound, Enclosed coast / Embayment
Biological zone	Sublittoral Fringe, Upper Infralittoral, Lower Infralittoral, Upper Circalittoral, Lower Circalittoral, Circalittoral Offshore	Wave exposure	Field unresearched
Tidal stream strength/Water flow	Field unresearched	Salinity	Full (30-40 psu)
Habitat Additional Information
AMBI Group (Borja et al., 2000)	II
Distribution References	NBN, 2002, Hayward & Ryland, 1995b, Blahudka & Turkay, 2002, Allen, 1960, Jayamanne, 1995
Reproduction/Life History
Reproductive type	Gonochoristic	Developmental mechanism	Not researched
Reproductive Season	Not researched	Reproductive Location	As adult
Reproductive frequency	Annual episodic	Regeneration potential	No
Life span	6-10 years	Age at reproductive maturity	1-2 years
Generation time	Not researched	Fecundity	Insufficient information
Egg/propagule size	Not researched	Fertilization type	External
Larvae/Juveniles Larval/Juvenile dispersal potential Not researched Larval settlement period Not researched Duration of larval stage Not researched
Additional Information
Reproduction References	Mente, 2008, Hayward & Ryland, 1995b, Blahudka & Turkay, 2002, Jayamanne, 1995, Fish & Fish, 1996