Diagnostic Description
(
anglais
)
fourni par FAO species catalogs
fieldmarks: An angelshark with simple spatulate nasal barbels and weakly fringed or smooth anterior nasal flaps, dermal flaps on sides of head without angular lobes, small eyes with interspace between them and spiracles about 2.5 times eye diameter, fairly broad and posteriorly broadly rounded or angular pectoral fins, and no ocelli on body. Trunk moderately narrow. Anterior nasal barbels simple and with a narrowly spatulate tip; posterior margin of anterior nasal flaps between nasal barbels and tips weakly fringed or smooth; distance from eye to spiracle about twice eye diameter; dermal folds on sides of head without triangular lobes. First dorsal origin behind pelvic rear tips; pectoral fins rather broad, with broadly rounded or subangular free rear tips. Probably spines of midline of back and head small. No ocelli on body.
- citation bibliographique
- FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis. , (125) Vol.4, Part 1.
- auteur
- Food and Agriculture Organization of the UN
Distribution
(
anglais
)
fourni par FAO species catalogs
Western South Atlantic: Southern Brazil to Argentina.
- citation bibliographique
- FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis. , (125) Vol.4, Part 1.
- auteur
- Food and Agriculture Organization of the UN
Size
(
anglais
)
fourni par FAO species catalogs
Maximum total length 170 cm.
- citation bibliographique
- FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis. , (125) Vol.4, Part 1.
- auteur
- Food and Agriculture Organization of the UN
Brief Summary
(
anglais
)
fourni par FAO species catalogs
A common but poorly known temperate and subtropical angelshark of the western South Atlantic continental shelf and slope, on or near the bottom.
- citation bibliographique
- FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis. , (125) Vol.4, Part 1.
- auteur
- Food and Agriculture Organization of the UN
Benefits
(
anglais
)
fourni par FAO species catalogs
Presumably taken by bottom trawlers.
- citation bibliographique
- FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis. , (125) Vol.4, Part 1.
- auteur
- Food and Agriculture Organization of the UN
Life Cycle
(
anglais
)
fourni par Fishbase
Ovoviviparous, embryos feed solely on yolk (Ref. 50449). Both ovaries are functional (Ref. 57911).
- licence
- cc-by-nc
- droit d’auteur
- FishBase
Biology
(
anglais
)
fourni par Fishbase
Found on the continental shelf and slope. Ovoviviparous (Ref. 50449).
- licence
- cc-by-nc
- droit d’auteur
- FishBase
- Recorder
- Kent E. Carpenter
Importance
(
anglais
)
fourni par Fishbase
fisheries: subsistence fisheries
- licence
- cc-by-nc
- droit d’auteur
- FishBase
- Recorder
- Kent E. Carpenter
Argentine angelshark
(
anglais
)
fourni par wikipedia EN
The Argentine angelshark (Squatina argentina) is an angelshark of the family Squatinidae.
Measurements
Born: N/A.; Mature: ~ 100.0 cm - 120 cm TL; Max: 138 (?170) cm TL.
Identification
Colour: Are a purplish-brown color with many scattered dark brown spots (with no white), that are mostly in circular groups around a central spot. No ocelli. Obtains paler dorsal fins. Body: Has simple spatulate nasal barbels. Also slightly fringed or a smooth anterior nasal flaps with no triangular lobes on lateral head folds. Has concave between its eyes. Obtains enlarged thorns on snout, and not back. Its pectoral fins are large, broad, and obtusely angular. Convex leading edge forming a very distinct 'shoulder'.
Distribution & range
Southwest Atlantic: from southern Brazil down south to Patagonia. 19°S - 53°S, 68°W - 38°W.
Climate & habitat
Subtropical; continental shelf and upper slope, demersal, marine. Found 50 – 320 m (usually 100 – 400 m) down.
Behaviour
Unknown.
Biology
Diet: Feeds on demersal fishes, shrimp, and squid. Reproduction: Are ovoviviparous, birth about 7 to 11 pups per litter.
Threat to humans
Traumatogenic.
Resilience & vulnerability
Very low, minimum population doubling time more than 14 years; high to very high vulnerability.
References
- licence
- cc-by-sa-3.0
- droit d’auteur
- Wikipedia authors and editors
Argentine angelshark: Brief Summary
(
anglais
)
fourni par wikipedia EN
The Argentine angelshark (Squatina argentina) is an angelshark of the family Squatinidae.
- licence
- cc-by-sa-3.0
- droit d’auteur
- Wikipedia authors and editors
