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Mobula alfredi  (Krefft, 1868)

Alfred manta
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Mobula alfredi
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Classification / Names Noms communs | Synonymes | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Élasmobranches (requins et raies) (sharks and rays) > Myliobatiformes (Stingrays) > Myliobatidae (Eagle and manta rays) > Mobulinae

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

; marin benthopélagique; profondeur 1 - 120 m (Ref. 86942).   Tropical; 32°N - 34°S, 30°E - 134°W

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: Red Sea, South Africa, Thailand to Western Australia.; north to Japan (Yaeyama Is.), to Solitary Is., Australia as far east as French Polynesia and the Hawaiian Is. Reported in the Atlantic (Canary and Cape Verde islands) but this species may be restricted more or less to the Indian and Western Pacific only (McEachran, pers.comm. 03/10)..

Length at first maturity / Taille / Poids / Âge

Maturity: Lm ?, range 370 - 390 cm
Max length : 500 cm WD mâle / non sexé; (Ref. 82755); âge max. reporté: 31 années (Ref. 97313)

Description synthétique Morphologie | Morphométrie

This species is characterized by the following: disc approximately 2.2-2.4 times as broad as it is long, the maximum disc width size approximately 550 cm; slender whip-like tail approximately 123% of disc length if intact; no distinct caudal spine or cartilaginous mass at base of tail; some specimens have small hump at the base of the tail on the dorsal surface, while others have a slight depression and groove on the dorsum of the tail immediately posterior to the posterior margin of the dorsal fin; small, knob-like dermal denticles evenly distributed on both the dorsal and ventral surfaces, with ventral surface having slightly larger denticles; dental ligament with small cusped teeth on the lower jaw measuring roughly 22% of total disc length, approximately 6-8 rows, 142-182 files across entire width of the tooth band; total tooth counts of 900-1500 for entire tooth band; top jaw lacks rows of enlarged denticles (Ref. 82755).

Biologie     Glossaire (ex. epibenthic)

Adults are commonly sighted inshore, within a few kilometers of land; found around coral and rocky reefs as well as along productive coastlines with consistent upwelling, tropical island groups, atolls and bays (Ref. 82755). Maximum movement recorded is >500,000 m (Ref. 97317). Known aggregations include sites in Hawai'i, Mozambique, Maldives, Ryukyu Island, Yap Island, Indonesia, eastern and western Australia (Ref. 82755).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Young may tend to follow large objects such as their mother (Ref. 205).

Référence principale Upload your references | Références | Coordinateur : McEachran, John | Collaborateurs

Marshall, A.D., L.J.V. Compagno and M.B. Bennett, 2009. Redescription of the genus Manta with resurrection of Manta alfredi (Krefft, 1868) (Chondrichthyes; Myliobatoidei; Mobulidae). Zootaxa 2301:1-28. (Ref. 82755)

Statut dans la liste rouge de l'IUCN (Ref. 115185)

CITES (Ref. 115941)

Menace pour l'homme

  Harmless




Utilisations par l'homme

FAO(Publication : search) | FishSource |

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Sources Internet

Aquatic Commons | BHL | Cloffa | Websites from users | FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | DORIS | ECOTOX | Faunafri | Fishtrace | GenBank(génôme, nucléotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Bases de données nationales | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | SeaLifeBase | Arbre de Vie | Wikipedia(aller à, chercher) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 24.3 - 29, mean 27.8 (based on 1274 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  3.6   ±0.5 se; Based on size and trophs of closest relatives
Résilience (Ref. 69278):  Très faible, temps minimum de doublement de population supérieur à 14 ans (tmax>31; tm = 3-8; Fec =1).
Vulnérabilité (Ref. 59153):  Very high vulnerability (81 of 100) .