Shortspine spurdog (Squalus mitsukurii) fish species and Shortspine spurdog information

Scientific Name
Squalus mitsukurii

Common Name
Shortspine spurdog

Biology
Found on the continental and insular shelves and upper slopes (Ref. 247, 75154). Perhaps ranging from 4-740 m (Ref. 58302). Feeds on bony fishes including hake, snoek, conger eels and lantern fishes (Ref. 36731), cephalopods, and crustaceans (Ref. 5213). Ovoviviparous (Ref. 205), with about 4 to 9 pups in a litter (Ref. 247).

Classification

Classified By

Jordan & Snyder, 1903

Class

Sharks and Rays (Elasmobranchii)

Order

Bramble, Sleeper and Dogfish sharks (Squaliformes)

Family

Dogfish sharks (Squalidae)

Distribution

Region

Widely distributed in temperate and subtropical parts of most oceans but possibly consisting of a species complex (Ref. 6871, 31367). Western Indian Ocean

Distribution

Widely distributed in temperate and subtropical parts of most oceans but possibly consisting of a species complex (Ref. 6871, 31367). Western Indian Ocean: Walters Shoal (MNHN 1991-0406) (Ref. 33390). Eastern Indian Ocean: southern Australia (Ref. 6871). Western Pacific: seamounts in the North Pacific, Japan, Korea, China (and presumably Taiwan and Viet Nam); possibly in New Zealand. Eastern Central Pacific: Hawaiian Islands. Nominal records of Squalus blainvillei or Squalus fernandinus from the western Indian Ocean, New Caledonia and Chile are based in part on this species. Elsewhere, dogfishes very similar to Squalus mitsukurii are not conspecific with Squalus blainvillei. Southwest Atlantic: Uruguay to Argentina (Ref. 58839).

Range

45°N - 55°S, 97°W - 164°W

Environment

Climate

Deep-water

Water Temperature From

8 °C

Water Temperature To

17 °C

Depth From - meters

29 m

Depth To - meters

600 m

Zone

benthopelagic

Environment

Marine; benthopelagic; depth range 29 - 600 m (Ref. 58302), usually 48 - 533 m (Ref. 57911)

Trophic Level

4.45 s.e. 0.72 Based on diet studies.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

89.8 cm

Common Length

82 cm

Phylogenetic Diversity Index

PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: minor commercial

Vulnerability

High vulnerability (61 of 100)

Resilience

Very Low, minimum population doubling time more than 14 years (Fec=4)

Threat To Humans

Harmless

IUCN Red List Status

Data deficient (DD)

Shortspine spurdog (Squalus mitsukurii) fish species and information / pictures of Shortspine spurdog - Squalus mitsukurii

Shortspine spurdog (Squalus mitsukurii) fish species information

Classification

Distribution

Environment

Physical Size and Genetics

Human Uses and Population