Apristurus brunneus

Inhabits the outer continental shelf and upper slope (Ref. 244). Found over muddy or sandy bottoms (Ref. 27436). Feeds on small true shrimps, euphausiid shrimps, squids, and small fishes (Ref. 244). Oviparous (Ref. 50449).

A. brunneus is found in the eastern Pacific (British Columbia, Canada, to Northern Baja California, Mexico, probably south to Panama, Ecuador, and Peru).

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Eastern Pacific: British Columbia, Canada to northern Baja California, Mexico. Probably south to Panama, Ecuador, and Peru.

Northeastern and eastern Pacific.

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Analspines: 0; Analsoft rays: 0

69.0 cm TL (male/unsexed; (Ref. 96339))

Maximum size: 680 mm TL

Dark brown, with conspicuous light posterior margin on fins (Ref. 247).

benthic

Found over muddy or sandy bottoms.

Habitat and Ecology

Systems

• Marine

demersal; marine; depth range 33 - 1306 m (Ref. 96339)

Habitat Type: Marine

Depth range based on 92 specimens in 1 taxon.
Water temperature and chemistry ranges based on 9 samples.

Environmental ranges
  Depth range (m): 78.5 - 1448
  Temperature range (°C): 2.906 - 5.424
  Nitrate (umol/L): 37.822 - 44.810
  Salinity (PPS): 34.027 - 34.534
  Oxygen (ml/l): 0.303 - 1.332
  Phosphate (umol/l): 2.880 - 3.284
  Silicate (umol/l): 70.929 - 155.145

Graphical representation

Depth range (m): 78.5 - 1448

Temperature range (°C): 2.906 - 5.424

Nitrate (umol/L): 37.822 - 44.810

Salinity (PPS): 34.027 - 34.534

Oxygen (ml/l): 0.303 - 1.332

Phosphate (umol/l): 2.880 - 3.284

Silicate (umol/l): 70.929 - 155.145
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Depth: 33 - 950m.
From 33 to 950 meters.

Habitat: demersal.

Non-Migrant: No. All populations of this species make significant seasonal migrations.

Locally Migrant: No. No populations of this species make local extended movements (generally less than 200 km) at particular times of the year (e.g., to breeding or wintering grounds, to hibernation sites).

Locally Migrant: No. No populations of this species make annual migrations of over 200 km.

Feeds mainly on shrimps; also on euphausiid shrimps, squids and small fishes (Ref. 244).

Feeds on small true shrimps, euphausiid shrimps, squids, and small fishes

Oviparous, with a single egg per oviduct (Ref. 244). Eggs are enclosed in oblong transparent cases with tendrils at each end (Ref. 6885). Embryos feed solely on yolk (Ref. 50449). In Canada, females carry egg cases from February to August (Ref. 244).

Year Assessed

Assessor/s

Reviewer/s

Contributor/s

Justification

Canada

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: GNR - Not Yet Ranked

Population

Population Trend

Major Threats

Data deficient (DD)

Conservation Actions

fisheries: of no interest