Rhizoprionodon acutus (Rüppell, 1837)

Milk shark
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Rhizoprionodon acutus   AquaMaps   Data sources: GBIF OBIS
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klasifikasi / Names Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Ikan bertulang rawan (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Rhizoprionodon: Greek, rhiza = root + Greek, prion = saw + Greek, odous = teeth (Ref. 45335).  More on author: Rüppell.

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

; laut; air tawar; payau bentopelagis; amphidromus (Ref. 51243); kisaran kedalaman 1 - 200 m (Ref. 244).   Tropical; 41°N - 30°S, 27°W - 156°E

Penyebaran Negara-negara | Daerah-daerah FAO | Ecosystems | Kemunculan | Point map | Introduksi | Faunafri

Eastern Atlantic: Mauritania to Angola; reported from the Gulf of Taranto (Ref. 231). Indo-West Pacific: Persian Gulf (Ref. 68964), Red Sea and East Africa to Indonesia, north to Japan, south to Australia.

Length at first maturity / Size / Weight / umur

Maturity: Lm ?, range 70 - 80 cm
Max length : 175 cm TL jantan/; (Ref. 12693); 80.8 cm TL (female); common length : 110 cm TL jantan/; (Ref. 47737); Berat maksimum terpublikasi: 5.0 kg (Ref. 40637); Umur maksimum dilaporkan: 8 Tahun (Ref. 244)

deskripsi pendek Morfologi | Morfometrik

Duri punggung (Keseluruhan (total)): 0; duri punggung lunak (Keseluruhan (total)): 0; Duri dubur 0; Sirip dubur lunak: 0. A small shark with a long, narrow, snout, big eyes without notches, long labial furrows, and oblique-cusped teeth which may be smooth-edged or weakly serrated; 2nd dorsal fin small, low and behind larger anal fin; no interdorsal ridge (Ref. 5578). Grey or grey-brown above, white below (Ref. 5578). Dorsal and anal fins with dusky or blackish edges, fins slightly darker than back (Ref. 9997).

Biologi     Daftar kata (contoh epibenthic)

Found on continental shelves, often on sandy beaches and rarely in estuaries (Ref. 244). Reported to enter freshwater and recorded several times from Cambodia as far upstream as the Great Lake (Ref. 12693). Occurs near the surface in shallow waters (Ref. 12693). Feeds mainly on small pelagic and benthic bony fishes, also cephalopods and other invertebrates (Ref. 244). Viviparous (Ref. 50449). Utilized fresh and possibly dried salted for human consumption and for fishmeal (Ref. 9997). The 178 cm specimen recorded off Africa is possibly based on some other species (Ref. 9997).

Life cycle and mating behavior Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva

Distinct pairing with embrace (Ref. 205). Viviparous, with a yolk-sac placenta; 2 to 8 in a litter (Ref. 9997), usually 2 to 5 after a gestation period of ~ 12 months; no seasonality in the reproductive cycle (Ref.58048). Size at birth between 25 and 39 cm.

rujukan utama Upload your references | Acuan | Koordinator : Compagno, Leonard J.V. | mitra

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 IUCN Red List (Ref. 120744)

  kurang bimbang (LC) ; Date assessed: 30 April 2003

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

  Harmless (Ref. 244)





penggunaan manusia

Perikanan: komersial; Ikan buruan: ya
FAO(Publication : search) | FishSource | Sea Around Us

informasi lanjut

Nama-nama umum
Sinonim (persamaan)
metabolisme
Pemangsa
Ekotoksikologi
Reproduksi, perkembang biakan
Kematangan
Pemijahan
Spawning aggregation
Fecundity
telur-telur
pekembangan telor
Acuan
Budidaya air
profil budidaya air
Strain
Genetika
Frekuensi alel
Diturunkan
Penyakit-penyakit
Pengolahan
Mass conversion
mitra
Gambar
Stamps, Coins Misc.
Suara-suara
Ciguatera
Kecepatan
Tipe renang
Area insang
Otoliths
Otak
Penglihatan / visi

Alat, peralatan

laporan khas

muat turun XML

Sumber internet

Estimates based on models

Preferred temperature (Ref. 115969): 19.6 - 28.5, mean 26.9 (based on 1463 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00252 - 0.00435), b=3.09 (3.04 - 3.14), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  4.3   ±0.4 se; Based on diet studies.
Generation time: 5.5 ( na - na) years. Estimated as median LN(3)/K based on 1 growth studies.
Daya lenting (Ref. 120179):  sangat rendah, Waktu penggandaan populasi minimum lebih dari 14 tahun (K=0.2-0.6; Fec=1).
keancaman (Ref. 59153):  High vulnerability (61 of 100) .
kategori harga (Ref. 80766):   Medium.