Actinopteri (ray-finned fishes) > Gadiformes
(Cods) > Merlucciidae
Etymology: Merluccius: Latin, mar, maris = the sea + Latin, lucius = pike (Ref. 45335). More on author: Ayres.
Environment: milieu / climate zone / depth range / distribution range
Marine; brackish; pelagic-neritic; depth range 0 - 1000 m (Ref. 9316), usually ? - 229 m (Ref. 2850). Temperate; 51°N - 15°N, 130°W - 77°W (Ref. 58452)
Eastern Pacific: northern Vancouver Island, Canada to northern part of the Gulf of California. A record from the Gulf of Alaska is doubtful.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 34 - 40 cm
Max length : 91.0 cm TL male/unsexed; (Ref. 1371); common length : 60.0 cm TL male/unsexed; (Ref. 1371); max. published weight: 1.2 kg (Ref. 4883); max. reported age: 16 years (Ref. 56527)
soft rays: 40 - 43. Head rather short. Pectoral fin tips usually reaching to or beyond the origin of anal fin. Caudal fin always concave. Color silvery on back grading to whitish ventrally.
Inhabit oceanic and coastal areas, but mainly on the continental shelf (Ref. 1371). Although often classified as demersal, the distribution and behavior suggest a largely pelagic existence (Ref. 1371). Adults live in large schools in waters overlying the continental shelf and slope except during the spawning season when they are found several hundred miles seaward (Ref. 1371). A nocturnal feeder (Ref. 6885) that feed on a variety of fishes and invertebrates (Ref. 1371). Important prey for sea lions and small cetaceans (Ref. 2850); also prey of dogfish (Ref. 11384).
Cohen, D.M., T. Inada, T. Iwamoto and N. Scialabba, 1990. FAO species catalogue. Vol. 10. Gadiform fishes of the world (Order Gadiformes). An annotated and illustrated catalogue of cods, hakes, grenadiers and other gadiform fishes known to date. FAO Fish. Synop. 125(10). Rome: FAO. 442 p. (Ref. 1371)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: highly commercial
Estimates based on models
Preferred temperature (Ref. 115969
): 7 - 12.6, mean 8.6 °C (based on 23 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00575 (0.00371 - 0.00892), b=3.07 (2.93 - 3.21), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.4 ±0.0 se; based on diet studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=17; tm=4; also Musick et al. 2000 (Ref. 36717
Prior r = 0.49, 95% CL = 0.33 - 0.74, Based on 3 stock assessments.
Vulnerability (Ref. 59153
): High vulnerability (60 of 100) .