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Pollachius virens
Diagnosis
Pollachius virens : a small barbel at tip of lower jaw. Lateral line smooth along its entire length. Colour : brownish-green dorsally, only slightly paler ventrally; fins coloured like the body, except for pelvics which are pale; lateral line pale (Cohen & al., 1990).
Diagnosis_Genus: Pollachius (Nilsson, Prodromus ichthyologiae Scandinavicae, 1832 readable on internet but not downloadable). Pinnis dorsalibus tribus, analibus duabus; cirro nullo; maxima inferiore longiore.
Diagnosis_Species: Pollachius virens (Linnaeus, 1758). G. tripterygius imberbis, dorso virescente. Fn.svec.296. D.13,2o,19.P.17.V.6.A.24,20.C,-- Gron. AEt. Ups.1742. p.90. Idem, D.13,20,19.P.17.V.6.A.24,20.C.40. Habitat in Oceano Europaeo.
Body_adults : 30-110 cm (Cohen & al., 1990)
Body_adults_max : 130 cm (Cohen & al., 1990)
Body_1_year : 20 cm (Cohen & al., 1990)
Body_2_years : 35 cm (Cohen & al., 1990)
Body_3_years : 50 cm (Cohen & al., 1990)
Body_5_years : 60-65 cm (Cohen & al., 1990)
Body_10_years : 94-97 cm (Cohen & al., 1990)
Body_15_years : 108 cm (Cohen & al., 1990)
Western atlantic coast :
Body_egg_length : 1.0-1.22 mm (Cargnelli & al., 1999)
Body_larvae_length : 3.0-30.0 mm (Cargnelli & al., 1999)
Body_juvenile_length : 2.5-40.0 cm (Cargnelli & al., 1999)
Sequence_12rRNA : NC_015094.1 (GenBank)
Sequence_16rRNA : NC_015094.1 (GenBank)
Etymology
Pollachius: Scottish dialect, podlock, paddle = bumpfish
Type species
The type species for the genus Pollachius is Gadus virens.
Ecology
Migratory : Diel vertical migration (Cohen & al., 1990)
Migratory : Highly migratory species (Cohen & al., 1990)
Causality_of_migration : Trophic migration (Cohen & al., 1990)
Causality_of_migration : Sexual reproduction (Cohen & al., 1990)
Temporality_of_migration : Seasonal
Substrate : water
Sociability : gregarious
Salinity : marine
Temperature : 0-18 °C (Cargnelli & al, 1999)
Temperature_eggs : 2-17 °C (Cargnelli & al, 1999)
Temperature_larvae : 2-17 °C (Cargnelli & al, 1999)
Temperature_juvenile : 1-18 °C (Cargnelli & al, 1999)
Temperature_adult : 0-14 °C (Cargnelli & al, 1999)
Habitat : coastal
Habitat : oceanic
Habitat : Barents Sea and Spitsbergen to Bay of Biscay, around Iceland, southwest Greenland, and in the western Atlantic from Hudson Strait to North Carolina, although rare at the extremes of the range.
Depth : 0-365 m
Life cycle
Longevity: more than 3 years (Cohen & al. 1990)
Generation_time : more than 3 years (Cohen & al. 1990)
Phases_alternance: diplontic
Reproduction_mode: sexual
Fecondity_number_of_eggs_per_adult: 220000 eggs per female (Cohen & al. 1990)
Fecondity_number_of_eggs_per_adult_max: 4000000 eggs per female (Cohen & al. 1990)
Fertility_period: Seasonal (during winter)
Fertility_period: Seasonal (during spring)
Spawning_method: External fertilization in the water column
Feeding behaviour
Mode of locomotion
Original description
Reference(s)
Observation site(s)
SYMBIONTS
| Association with... | Region origin | Name of site | In reference... |
|---|---|---|---|
| Amyloodinium ocellatum | Aquarium Zoological Society of London |
(1934) On Oodinium ocellatum Brown, a parasitic dinoflagellate causing epidemic disease in marine fish. Proc. Zool. Soc. Lond. 2:583-607. |
