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Prionace glauca  (Linnaeus, 1758)

Blue shark
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Image of Prionace glauca (Blue shark)
Prionace glauca
Picture by Montealegre-Quijano, S.


Australia country information

Common names: Blue shark, Blue whaler, Blue whaler shark
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Occurs throughout Australia excluding the Arafura Sea, Gulf of Carpentaria and Torres Strait (Ref. 6871). Abundant off southern Australia but is not exploited by local fishers (Ref. 6871). Caught by game fishers off New South Wales (Ref. 6871). Also Ref. 244, 7300, 9997.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Last, P.R. and J.D. Stevens, 1994
National Database:

Classification / Names

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Weight / Age

Max length : 400 cm TL male/unsexed; (Ref. 35388); common length : 335 cm TL male/unsexed; (Ref. 5217); max. published weight: 205.9 kg (Ref. 40637); max. reported age: 20 years (Ref. 27347)

Length at first maturity
Lm 206.2, range 170 - 221 cm

Environment

Marine; brackish; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 1 - 1000 m (Ref. 89422), usually 1 - 220 m (Ref. 55193)

Climate / Range

Subtropical; 7°C - 21°C (Ref. 244); 71°N - 55°S, 180°W - 180°E

Distribution

Circumglobal in temperate and tropical waters. Western Atlantic: Newfoundland, Canada to Argentina. Central Atlantic. Eastern Atlantic: Norway to South Africa, including the Mediterranean. Indo-West Pacific: East Africa to Indonesia, Japan, Australia, New Caledonia, and New Zealand. Eastern Pacific: Gulf of Alaska to Chile. Probably the widest ranging chondrichthyian. Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea (Ref. 26139).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. A slim, graceful blue shark with a long, conical snout, large eyes, and curved triangular upper teeth with saw edges; pectorals long and narrow; no interdorsal ridge (Ref. 5578). Dark blue dorsally, bright blue on the sides, white ventrally (Ref. 5578). Tips of pectoral fins and anal fin dusky (Ref. 9997).

Biology     Glossary (e.g. epibenthic)

Oceanic, but may be found close inshore where the continental shelf is narrow (Ref. 6871, 58302). Usually found to at least 150 m (Ref. 26938). Reported from estuaries (Ref. 26340). Epipelagic, occasionally occurs in littoral areas (Ref. 58302). Feeds on fishes (herring, silver hake, white hake, red hake, cod, haddock, pollock, mackerel, butterfish, sea raven and flounders (Ref. 5951)), small sharks, squids, pelagic red crabs, cetacean carrion, occasional sea birds and garbage (Ref. 5578). Viviparous (Ref. 50449). Sexual dimorphism occurs in skin thickness of maturing and adult females (Ref. 49562). May travel considerable distances (one specimen tagged in New Zealand was recaptured 1,200 km off the coast of Chile) (Ref. 26346). Potentially dangerous to humans (Ref. 6871, 13513). Marketed fresh, dried or salted, and frozen; meat utilized for consumption, hides for leather and fins for soup (Ref. 9987). Sexually mature at 250 cm long and 4-5 years old. The female gives birth up to 80 young measuring 40 cm long, gestation lasts almost a year (Ref. 35388). Produces from 4 to 135 young a litter (Ref. 26938).

IUCN Red List Status (Ref. 115185)

Threat to humans

  Traumatogenic (Ref. 4690)



Human uses

Fisheries: minor commercial; gamefish: yes

More information

Common names
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Reproduction
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Fecundity
Eggs
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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
4.4   ±0.2 se; Based on diet studies.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (rm=0.031; K=0.16; tm=6; tmax=20; Fec=4-135)

Vulnerability (Ref. 59153)
Very high vulnerability (77 of 100)
Price category (Ref. 80766)
Medium