Pollachius pollachius

Researched By	Morvan Barnes	Data Supplied By	MarLIN
Refereed by	This information is not refereed
Taxonomy
Scientific name	Pollachius pollachius	Common name	Pollack
MCS Code	ZG135	Recent Synonyms
Phylum	Chordata	Subphylum	Vertebrata
Superclass	Gnathostomata	Class	Osteichthyes
Subclass	Teleostei	Order	Gadiformes
Suborder		Family	Gadidae
Genus	Pollachius	Species	pollachius
Subspecies
Additional Information
Taxonomy References	Howson & Picton, 1997, Hayward & Ryland, 1995b, Whitehead et al., 1986
General Biology
Growth form	Pisciform	Feeding method	Predator, Scavenger
Mobility/Movement	Swimmer	Environmental position	Demersal
Typical food types	Small fish as well as cephalopods and benthic crustaceans.	Habit	Free living
Bioturbator	Not relevant	Flexibility	Low (10-45 degrees)
Fragility	Intermediate	Size	Large(>50cm)
Height	Not researched	Growth Rate	0.3 kg / year
Adult dispersal potential	>10km	Dependency	Independent
Sociability	Solitary
Toxic/Poisonous?	No
Additional Information
Biology References	Hayward & Ryland, 1995b, Whitehead et al., 1986, Wheeler, 1969, Cohen et al., 1990, Person-Le Ruyet et al., 2006
Distribution and Habitat
Distribution in Britain & Ireland	Found off all British and Irish coasts.
Global distribution	Found in north-west Europe from Norway, Latvia and the Shetlands to northern Spain, in the Mediterranean off the coasts of Italy, and north-west Atlantic off the coasts of Canada.
Biogeographic range	Cold temperate to warm temperate.	Depth range	From 10 m to 200 m depth.
Migratory	Seasonal (environment)
Distribution Additional Information
Substratum preferences	Bedrock	Physiographic preferences	Open coast, Offshore seabed, Enclosed coast / Embayment
Biological zone	Sublittoral Fringe, Upper Infralittoral, Lower Infralittoral, Upper Circalittoral, Lower Circalittoral, Circalittoral Offshore, Bathybenthic (Bathyal)	Wave exposure
Tidal stream strength/Water flow		Salinity	Full (30-40 psu)
Habitat Additional Information
Distribution References	Hayward & Ryland, 1995b, Whitehead et al., 1986, Wheeler, 1969, Cohen et al., 1990
Reproduction/Life History
Reproductive type	Gonochoristic	Developmental mechanism	Oviparous
Reproductive Season	February to May	Reproductive Location	Water column
Reproductive frequency	Annual episodic	Regeneration potential	No
Life span	11-20 years	Age at reproductive maturity	3-5 years
Generation time	Not researched	Fecundity	3 million or more
Egg/propagule size	1.1 - 1.2 mm	Fertilization type	External
Larvae/Juveniles Larval/Juvenile dispersal potential >10km Larval settlement period Not relevant Duration of larval stage Not relevant
Additional Information
Reproduction References	Munk & Nielsen, 2005, Cohen et al., 1990, Suquet et al., 2005, Person-Le Ruyet et al., 2006