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Mobula japanica (Müller & Henle, 1841)

Spinetail mobula
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Mobula japanica   AquaMaps   Data sources: GBIF OBIS
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Mobula japanica
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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
Etymology: japanica: Named for Japan.

Issue
This species is considered as a junior synonym of Mobula mobular according to Last et al., 2016 (Ref. 114953) and White et al., 2017 (Ref. 115945:13). The species page will be removed,.

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

; marin récifal, usually 0 - 200 m (Ref. 89423).   Subtropical; 40°N - 30°S

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

Indo-Pacific: off South Africa, the Arabian Sea eastward to the Hawaiian Islands and Polynesia. Eastern Pacific: on the continental coast. Eastern Atlantic: Côte d'Ivoire but may probably be more wide-ranging. This has to be critically compared with Mobula mobular of the Mediterranean Sea and nominally elsewhere in the North Atlantic.

Length at first maturity / Taille / Poids / Âge

Maturity: Lm 200.0, range 198 - 205 cm
Max length : 310 cm WD mâle / non sexé; (Ref. 50641); 240.0 cm WD (female); common length : 225 cm WD mâle / non sexé; (Ref. 9256)

Description synthétique Morphologie | Morphométrie

Dark blue to black above, white below. Inner surface of cephalic fins silver grey with black tip, outer surface and side behind eye white (Ref. 11228). Shared characters between M. rancureli and Mobula japanica: teeth, placoid scales, and branchial filter morphologies, morphometrics, presence of tail spine, distinctive shape and coloration of dorsal fin, and general shape of body and coloration (Ref. 50641).

Biologie     Glossaire (ex. epibenthic)

Found inshore, possibly in oceanic waters (Ref. 9911). Pelagic (Ref. 58302). Occurs singly or in groups (Ref. 9911). Feeds mainly on euphausiids (mainly Nictiphanes simplex), and to a lesser extent on copepods and crustacean larvae. May also feed on small fishes. Ovoviviparous (Ref. 50449). Acoustic tracks record the species to spend time above the thermocline at night to feed on krill (H. Dewar, pers.comm. 05/2000). Very common by-catch of the gillnet fisheries targeting skpjack tuna (Katsuwonus pelamis). Utilized for its gill filter plates (very high value), meat, cartilage and skin (Ref.58048).

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). With one in a litter (Ref. 12951). Size at birth 85-92 cm WD (Ref. 12951, Ref.58048).

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

Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)

Statut dans la liste rouge de l'IUCN (Ref. 119314)

  Quasi-menacé (NT) ; Date assessed: 31 January 2006

CITES (Ref. 115941)


Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: commercial
FAO(Publication : search) | FishSource |

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Niveau trophique (Ref. 69278):  3.4   ±0.43 se; Based on food items.
Résilience (Ref. 69278):  Très faible, temps minimum de doublement de population supérieur à 14 ans (Fec=1).
Vulnérabilité (Ref. 59153):  Moderate to high vulnerability (55 of 100) .
Catégorie de prix (Ref. 80766):   Medium.