ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Dasyatinae
Etymology: Dasyatis: Greek, dasys = rough, dense (Ref. 45335).
Eponymy: Dr Enrico Tortonése (1911–1987) was an Italian ichthyologist and specialist in echinoderms. He was a Professor at the Genoa Museum of Natural History. Capapé frequently cites Tortonése’s work on Mediterranean sharks and rays. (Ref. 128868), visit book page.
Environment: milieu / climate zone / গভীরতার পরিসীমা / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 100 - 200 m (Ref. 51024). Temperate; 46°N - 30°N, 6°W - 36°E
Northeast Atlantic: known only from the Mediterranean. Validity of this species questioned in Compagno's 1999 checklist (Ref. 35766).
আকৃতি / ওজন / Age
পরিপক্কতা : Lm ? range ? - ? cm
Max length : 80.0 cm WD পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 3169); common length : 65.0 cm WD পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 3169)
Found over sandy and muddy bottoms. Feeds on bottom-living invertebrates and fishes. Ovoviviparous, gestation about 4 months and about 6 to 9 young are produced.
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
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). Distinct pairing with embrace (Ref. 205).
McEachran, J.D. and C. Capapé, 1984. Dasyatidae. p. 197-202. In P.J.P. Whitehead, M.-L. Bauchot, J.-C. Hureau, J. Nielsen and E. Tortonese (eds.) Fishes of the north-eastern Atlantic and Mediterranean. UNESCO, Paris. Vol. 1. (Ref. 3169)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
হাতিয়ার
Special reports
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ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (সূত্র
123201): 13.3 - 16.1, mean 14.9 °C (based on 33 cells).
Phylogenetic diversity index (সূত্র
82804): PD
50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00195 - 0.01123), b=3.12 (2.92 - 3.32), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (সূত্র
69278): 4.0 ±0.62 se; based on food items.
স্থিতিস্থাপক (সূত্র
120179): অত্যন্ত কম , সর্বনিম্ন প্রজন দ্বিগুনের সময় ১৪ বৎসর (Fec=6-9).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (78 of 100).
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Nutrients (Ref.
124155): Calcium = 11.4 [2.2, 51.3] mg/100g; Iron = 0.269 [0.072, 0.742] mg/100g; Protein = 22 [19, 25] %; Omega3 = 0.532 [0.144, 1.564] g/100g; Selenium = 10.9 [3.1, 28.5] μg/100g; VitaminA = 11.5 [3.8, 33.6] μg/100g; Zinc = 0.407 [0.196, 0.714] mg/100g (wet weight);
![Image of Dasyatis tortonesei (Tortonese\](/images/thumbnails/jpg/tn_Dator_u4.jpg "Image of Dasyatis tortonesei (Tortonese\")
![Image of Dasyatis tortonesei (Tortonese\](/images/thumbnails/jpg/tn_Dator_u0.jpg "Image of Dasyatis tortonesei (Tortonese\")
