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Merluccius bilinearis  (Mitchill, 1814)

Silver hake
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Image of Merluccius bilinearis (Silver hake)
Merluccius bilinearis
Picture by Flescher, D.


country information

Common names: Pescada-prateada
Occurrence:
Salinity:
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information:
National Fisheries Authority:
Occurrences: Occurrences Point map
National Database: Portuguese Freshwater Fishes

Classification / Names

Actinopterygii (ray-finned fishes) > Gadiformes (Cods) > Merlucciidae (Merluccid hakes) > Merlucciinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Main reference

Size / Weight / Age

Max length : 76.0 cm TL male/unsexed; (Ref. 1371); common length : 37.0 cm TL male/unsexed; (Ref. 1371); common length :65 cm TL (female); max. published weight: 2.3 kg (Ref. 1371); max. reported age: 12 years (Ref. 1371)

Length at first maturity
Lm 23.2  range ? - ? cm

Environment

Marine; demersal; oceanodromous (Ref. 51243); depth range 55 - 914 m (Ref. 58452)

Climate / Range

Temperate, preferred 7°C (Ref. 107945); 55°N - 24°N, 80°W - 42°W (Ref. 54581)

Distribution

Northwest Atlantic: coast of Canada and USA from Bell Isle Channel to the Bahamas; most common from southern Newfoundland to South Carolina.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 1; Dorsal soft rays (total): 47-54; Anal spines: 0; Anal soft rays: 37 - 41. Head large, about 30% of SL . Pectoral fins long, reaching origin of anal fin. Overall color is silvery, somewhat brownish on back, whitish on belly.

Biology     Glossary (e.g. epibenthic)

Abundant on sandy grounds and strays into shallower waters. A voracious predator with cannibalistic habits. Individuals over 40 cm TL prey on fishes such as gadoids and herring, while smaller ones feed on crustaceans, i.e. euphausiids and pandalids; food also includes gaspereau, myctophids, smelt, silversides, mackerel, sand lance, butterfish, snakeblennies, longhorn sculpins and squids (Ref. 5951). The smallest specimen feeds mostly on crustaceans (Ref. 58452). Exhibits seasonal onshore-offshore migration (Ref. 9988). Spawning takes place from June-July in the mid-Atlantic region; July-August in the Gulf of Maine and to the north of Georges Bank, and August-September on the Scotian Shelf (Ref. 58452). Marketed fresh, smoked and frozen; fresh fish are exported to European markets; eaten fried, broiled, microwaved and baked (Ref. 9988).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Harmless



Human uses

Fisheries: highly commercial

Tools

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Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.5   ±0.4 se; Based on diet studies.

Resilience (Ref. 69278)
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.18-0.4;tm=2-3; tmax=12)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (54 of 100)
Price category (Ref. 80766)
Low