Sri Lanka country information

Common names: Polkola mora
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ce.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Requin océanique, Tiburón oceánico, Brown Milbert's sand bar shark, ... more

Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (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); longimanus: longus (L.), long; manus (L.) hand, referring to its long paddle-like pectoral fins. (See ETYFish).
More on author: Poey.

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

marino; oceanodromo (Ref. 51243); distribuzione batimetrica 0 - 1082 m (Ref. 106604), usually 0 - 152 m (Ref. 55185). Subtropical; 18°C - 28°C (Ref. 244); 46°N - 43°S, 180°W - 180°E (Ref. 6871)

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Circumglobal in tropical and warm-temperate waters Ref. 244). Highly migratory species.

Length at first maturity / Size / Peso / Age

Maturity: L_m 195.7, range 180 - 226 cm
Max length : 400 cm TL maschio/sesso non determinato; (Ref. 89972); common length : 270 cm TL maschio/sesso non determinato; (Ref. 9253); peso massimo pubblicato: 167.4 kg (Ref. 40637); Età massima riportata: 22 anni (Ref. 31395)

Short description Chiavi di identificazione | Morfologia | Morfometria

Spine dorsali (totale) : 0; Spine anali: 0. A stocky shark with a huge, rounded 1st dorsal fin, and long, wide-tipped pectoral fins; snout bluntly rounded; upper teeth triangular; interdorsal ridge present (Ref. 5578). Back usually dark grey with a bronze tinge, sometimes brown or bluish; belly whitish, sometimes with a yellow tinge; tips off first dorsal, pectorals, and lower lobe of caudal often white or with white spots (sometimes absent); ventral surface of pelvic fins, apices of anal and second dorsal, and ventral lobe of caudal often with black spots; black or dusky saddle-marks in front of second dorsal, upper margin of caudal and between dorsal fins (especially in young) (Ref. 9997).

An oceanic deep-water species which sometimes comes close to shore (Ref. 244). Found surface to depths of at least 150 m (Ref. 26938). Epipelagic usually over water depths of >184 meters (Ref. 58302). Frequently accompanied by Remora, Coryphaena, pilot fishes (Ref. 30573), and tortoises. Feeds oceanic bony fishes, also threadfins, stingrays, sea turtles, sea birds, gastropods, squid, crustaceans, mammalian carrion and garbage (Ref. 5578), including tuna and mahimahi (Ref. 1602, 37816). Viviparous (Ref. 50449). There is pronounced partial segregation by size and sex in some areas. This is an active, almost fearless shark also charged in human attacks (Ref. 244). Probably responsible for many open-ocean attacks after air or sea disasters (Ref. 6871). Utilized fresh, frozen (Ref. 9987), smoked, and dried-salted for human consumption; hides for leather, fins for fin soup, liver oil for vitamins, also processed into fishmeal (Ref. 244). 1 to 15 young, 60 to 65 cm, are born per litter (Ref. 1602).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Viviparous, placental (Ref. 50449). Litter size 1-15 pups; 60-65 cm at birth (Ref. 244). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Bibliografia | Coordinatore : Compagno, Leonard J.V. | Collaboratori

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)

IUCN Red List Status (Ref. 130435)

Critically Endangered (CR) (A2bd); Date assessed: 07 November 2018

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Appendix I: Endangered migratory species

Threat to humans

Traumatogenic (Ref. 244)

Human uses

Pesca: commerciale; Pesce da pesca sportiva: si

FAO(pesca: production; publication : search) | FishSource | Sea Around Us

Informazioni ulteriori

Trophic ecology
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Diet compositions
Food consumptions
Food rations
Predatori

Ecology
Ecologia
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Population dynamics
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Length-weight rel.
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Life cycle
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Genetics
Genetica
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Human related
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Profili di acquacoltura
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Ciguatera cases
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References
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Fonti Internet

Estimates based on models

Preferred temperature (Ref. 115969): 17.9 - 28.9, mean 26.8 (based on 6810 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01023 (0.00631 - 0.01659), b=3.06 (2.93 - 3.19), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.2 ±0.4 se; based on diet studies.

Resilienza (Ref. 120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (K=0.1; tm=7; tmax=22; Fec=1).

Prior r = 0.06, 95% CL = 0.04 - 0.09, Based on 2 data-limited stock assessments.

Fishing Vulnerability (Ref. 59153): Very high vulnerability (84 of 100).

Climate Vulnerability (Ref. 125649): Very high vulnerability (76 of 100).

Price category (Ref. 80766): Medium.

Carcharhinus longimanus (Poey, 1861)