Carcharhinus galapagensis, Galapagos shark : fisheries
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Carcharhinus galapagensis (Snodgrass & Heller, 1905)

Galapagos shark
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Carcharhinus galapagensis   AquaMaps   Data sources: GBIF OBIS
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Image of Carcharhinus galapagensis (Galapagos shark)
Carcharhinus galapagensis
Picture by Randall, J.E.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish);  galapagensis: -ensis, Latin suffix denoting place: Galapagos Islands, type locality. (See ETYFish).

Environment: milieu / climate zone / depth range / distribution range Ecologie

; marien rifbewoner; diepteverspreiding 1 - 286 m (Ref. 58302), usually 30 - 180 m (Ref. 37816). Tropical; 36°N - 34°S, 180°W - 180°E (Ref. 55181)

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Circumtropical with a preference for waters around oceanic islands. Eastern Atlantic: including St. Paul's Rocks (Refs. 13121, 52289). Western Indian Ocean: including Walter's Shoal, south of Madagascar. Western Pacific: including Middleton and Elizabeth Reefs. Eastern Pacific: Galápagos (Ref. 58896).

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm 230.0, range 215 - 245 cm
Max length : 370 cm TL mannelijk/geslacht niet bekend; (Ref. 1602); common length : 300 cm TL mannelijk/geslacht niet bekend; (Ref. 9253); Maximaal gepubliceerd gewicht: 85.5 kg (Ref. 40637); Maximaal vermelde leeftijd: 24 jaren (Ref. 31395)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 0. Low inter-dorsal ridge present (Ref.9997). Dark grey above, light below, fins plain or with slightly dusky tips (Ref. 9997).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

A common but habitat-limited tropical shark found close inshore to well as offshore near or on insular or continental shelves (Ref. 244). Prefers clear water with coral and rocky bottoms (Ref. 244). Although a coastal pelagic species, it is capable of crossing considerable distances of open ocean between islands (at least 50 km) (Ref. 244). Juveniles restricted to shallower water, in 25 m or less (Ref. 244; 37816). Found in superficial aggregations (Ref. 244). Tends to feed near the bottom but may take bait from the surface (Ref. 5485). Feeds mainly on bottom fishes, also squid and octopi (Ref. 244). In the Galapagos Is. it preys on sea lions and marine iguanas (Ref. 28023). Inquisitive and sometimes aggressive, displaying a 'hunch' position ( arched back, raised head and lowered caudal and pectoral fins, while twisting and rolling) near divers that may be followed by biting (Ref. 58085). Viviparous (Ref. 50449). 6 to 16 young of 57 to 80 cm are born per litter (Ref. 1602).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Viviparous, with a yolk sac placenta (Ref. 244). 6 to 16 young born at 60-80 cm (Ref. 26346). Distinct pairing with embrace (Ref. 205).

Voornaamste referentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Niet bedreigd (LC) ; Date assessed: 07 December 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Traumatogenic (Ref. 4690)





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Estimates based on models

Preferred temperature (Ref. 115969): 15 - 28.2, mean 23.8 °C (based on 1899 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00224 - 0.01069), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Genus-BS (Ref. 93245).
Trophic level (Ref. 69278):  4.2   ±0.4 se; based on diet studies.
Generation time: 8.8 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Weerstandsvermogen (Ref. 120179):  zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=4).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (73 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Prijsklasse (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 6.25 [0.84, 22.96] mg/100g ; Iron = 0.331 [0.095, 0.929] mg/100g ; Protein = 22.1 [19.0, 24.5] % ; Omega3 = 0.1 [0.0, 0.2] g/100g ; Selenium = 40.7 [10.4, 109.3] μg/100g ; VitaminA = 50.1 [17.9, 139.7] μg/100g ; Zinc = 0.454 [0.208, 0.914] mg/100g (wet weight);