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Negaprion acutidens (Rüppell, 1837)

Sicklefin lemon shark
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Image of Negaprion acutidens (Sicklefin lemon shark)
Negaprion acutidens
Picture by Randall, J.E.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
  More on author: Rüppell.

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

; marien; brakwater rifbewoner; diepteverspreiding 0 - 92 m (Ref. 244).   Tropical; 30°N - 32°S, 32°E - 140°W (Ref. 244)

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Indo-Pacific: Red Sea and South Africa (including Mauritius, Seychelles, Madagascar) to Philippines, north to Viet Nam, south to Australia. Also from Palau, Marshall Islands, and Tahiti. Recorded from Taiwan (Ref. 4868).

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm ?, range 220 - 240 cm
Max length : 380 cm TL mannelijk/geslacht niet bekend; (Ref. 5213)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 0. A large, stocky, yellowish shark with a broad, blunt snout, narrow, smooth-cusped teeth in both jaws, and equal-sized dorsal fins (Ref. 5578). Yellowish brown above, paler below (Ref. 9997). With two nearly equally large dorsal fins (Ref. 37816).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Found on continental and insular shelves and terraces (Ref. 244). Common on coral reefs (Ref. 5578) and in shallow, sandy lagoons and turbid, mangrove swamps (Ref. 6871). Feeds on smaller sharks, stingrays and on benthic bony fishes (Ref. 5578). Viviparous (Ref. 50449). Dangerous if provoked (Ref. 244). 1 to 11 of 45 cm young are born per litter (Ref. 1602). Meat is utilized fresh and dried salted for human consumption, fins for shark-fin soup base, and liver oil for vitamins (Ref. 244).

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

Viviparous, placental (Ref. 50449), 1-14 per litter (Ref. 6871). Gestation period 10-11 months (Ref. 5578; Ref.58048). Size at birth about 50 to 70 cm TL (Ref. 9997); 45-80 cm TL (Ref.58048). Distinct pairing with embrace (Ref. 205). Mating and pupping take place during late spring and early summer (Ref. 37816).

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. 119314)

  Bedreigd (EN) (A2abcd+3bcd+4abcd); Date assessed: 30 April 2003

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Traumatogenic (Ref. 244)





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Estimates of some properties based on models

Preferred temperature (Ref. 115969): 24.7 - 29.1, mean 28.1 (based on 2034 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00267 - 0.00987), b=3.10 (2.94 - 3.26), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic Level (Ref. 69278):  4.1   ±0.6 se; Based on diet studies.
Weerstandsvermogen (Ref. 69278):  zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=1).
Kwetsbaarheid (Ref. 59153):  Very high vulnerability (81 of 100) .
Prijsklasse (Ref. 80766):   Medium.