Mobula alfredi, Alfred manta

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Mobula alfredi (Krefft, 1868)

Alfred manta
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Mobula alfredi   AquaMaps   Data sources: GBIF OBIS
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Image of Mobula alfredi (Alfred manta)
Mobula alfredi
Picture by Henke, M.

Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

Ελασμοβράγχιοι (καρχαρίες και σαλάχια) (sharks and rays) > Myliobatiformes (Stingrays) > Mobulidae (Devilrays)

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

; Θαλασσινό(ά) βενθοπελαγικό; εύρος βάθους 1 - 120 m (Ref. 86942), usually - m (Ref. ).   Tropical; 0°C - ; 32°N - 34°S, 30°E - 134°W

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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 / Μέγεθος / Βάρος / Age

Maturity: Lm ?, range 370 - 390 cm
Max length : 500 cm WD αρσενικό/απροσδιόριστο; (Ref. 82755); μεγ. αναφερόμενη ηλικία: 31 έτη (Ref. 97313)

Short description Μορφολογία | Μορφομετρία

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).

Βιολογία     Γλωσσάρι (π.χ. 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). Gestation period 12-13 months and feeds mainly on planktonic organisms and probably small bony fishes (Ref. 114953).

Life cycle and mating behavior Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες

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

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Last, P.R., W.T. White, M.R. de Carvalho, B. Séret, M.F.W. Stehmann and G.J.P. Naylor, 2016. Rays of the world. CSIRO Publishing, Comstock Publishing Associates. i-ix + 1-790. (Ref. 114953)

IUCN Red List Status (Ref. 124695)

  Ευάλωτο, βλέπε Κόκκινη Λίστα (VU) (A2bcd+3d); Date assessed: 09 November 2018

CITES


Threat to humans

  Harmless





Human uses

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Estimates based on models

Preferred temperature (Ref. 115969): 24.3 - 29, mean 27.8 °C (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).
Τροφικό Επίπεδο (Ref. 69278):  3.6   ±0.5 se; based on size and trophs of closest relatives
Ελαστικότητα (Ref. 120179):  Πολύ χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού > 14 έτη (tmax>31; tm = 3-8; Fec =1).
Vulnerability (Ref. 59153):  Very high vulnerability (84 of 100) .
Nutrients (Ref. 124155):  Calcium = 12.1 [0.9, 74.7] mg/100g ; Iron = 0.445 [0.083, 1.875] mg/100g ; Protein = 19.8 [17.3, 22.3] % ; Omega3 = 0.109 [0.037, 0.340] g/100g ; Selenium = 72.5 [16.1, 301.7] μg/100g ; VitaminA = 8.7 [1.8, 46.6] μg/100g ; Zinc = 0.516 [0.125, 1.871] mg/100g (wet weight);