Chaetozone setosa

Researched By	Lizzie Tyler	Data Supplied By	University of Sheffield
Refereed by	This information is not refereed.
Taxonomy
Scientific name	Chaetozone setosa	Common name	A polychaete worm
MCS Code	P834	Recent Synonyms	None
Phylum	Annelida	Subphylum
Superclass		Class	Polychaeta
Subclass		Order	Spionida
Suborder		Family	Cirratulidae
Genus	Chaetozone	Species	setosa
Subspecies
Additional Information	There are several species confused under this name in UK waters (Howson & Picton, 1997).
Taxonomy References	Howson & Picton, 1997, Hayward et al., 1996, Hayward & Ryland, 1995b, Bruce et al., 1963, Picton & Costello, 1998, NBN, 2002
General Biology
Growth form	Vermiform segmented	Feeding method	Surface deposit feeder, Sub-surface deposit feeder
Mobility/Movement	Burrower	Environmental position	Infaunal
Typical food types	Detritus	Habit	Burrow dwelling
Bioturbator	Not researched	Flexibility	High (>45 degrees)
Fragility	Fragile	Size	Small(1-2cm)
Height		Growth Rate	Insufficient information
Adult dispersal potential	100-1000m	Dependency	Independent
Sociability	Solitary
Toxic/Poisonous?	No
Additional Information	This species is a sedentary worm feeding on detritus using its long, wrinkled fragile palps.
Biology References	Hayward & Ryland, 1995b
Distribution and Habitat
Distribution in Britain & Ireland	This species can be found around the coasts of Britain and Ireland.
Global distribution	European waters from Arctic to Mediterranean (Hayward & Ryland, 1995b), considered to be cosmopolitan is shallow waters Eulittoral to 1950 m in north east Atlantic (Chambers, 2000).
Biogeographic range	Not researched	Depth range
Migratory	Non-migratory / Resident
Distribution Additional Information	None entered
Substratum preferences	Muddy gravel, Coarse clean sand, Fine clean sand, Sandy mud, Muddy sand, Mud	Physiographic preferences
Biological zone		Wave exposure
Tidal stream strength/Water flow		Salinity
Habitat Additional Information	None entered
AMBI Group (Borja et al., 2000)	IV
Distribution References	Hayward et al., 1996, Hayward & Ryland, 1995b, Bruce et al., 1963, Picton & Costello, 1998, NBN, 2002, Hily, 1987, Chambers, 2000, Hayward & Ryland, 1995b
Reproduction/Life History
Reproductive type		Developmental mechanism	Lecithotrophic
Reproductive Season	See additional information	Reproductive Location	Insufficient information
Reproductive frequency	Annual episodic	Regeneration potential	No
Life span	1-2 years	Age at reproductive maturity
Generation time	Insufficient information	Fecundity
Egg/propagule size		Fertilization type	Insufficient information
Larvae/Juveniles Larval/Juvenile dispersal potential Insufficient information Larval settlement period Insufficient information Duration of larval stage
Additional Information	Reproductive period varies with location even on a small scale: spawning in Northumberland ranged from Feb-April or Nov-Jan in intertidal populations to Nov-Dec in a subtidal populations (Christie, 1985). June-Sept in English Channel (Hily, 1987). Adults with eggs found all year in Bay of Brest. Curtis (1977) suggested that a population from west Greenland had direct development .
Reproduction References	Christie, 1985, Curtis, 1977, Eckert, 2003, Giangrande, 1997, Christie, 1985