ইলাসমোব্রাঙ্কি (হাঙ্গর এবং রে) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on author: Lacepède.
Environment: milieu / climate zone / depth range / distribution range
বাস্তুসংস্থান
সামুদ্রিক তলদেশ বিহারী; গভীরতার পরিসীমা 50 - 200 m (Ref. 6808). Subtropical; 53°N - 9°N, 19°W - 36°E
Eastern Atlantic: southern Ireland and England to Senegal, including the western Mediterranean and the Canary Islands. Reported from the eastern Mediterranean (Ref. 3261).
Length at first maturity / আকৃতি / ওজন / Age
Maturity: Lm 80.0 range ? - 85.2 cm
Max length : 100.0 cm TL পুরুষ/ লিঙ্গ অনিধর্ারিত ; (Ref. 4426)
Found on sandy bottoms of shelf waters (Ref. 3167). Feed on all kinds of bottom animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 7.2-9.0 cm long and 4.2-5.2 cm wide (Ref. 41303 , 41251, 41304).
Life cycle and mating behavior
পরিপক্কতা | প্রজনন | ডিম ছাড়া | ডিমসমূহ | ডিম্বধারন ক্ষমতা | শুককীট
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Egg-cases laid from March to September (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
মৎস্য: বাণিজ্যিক; শিকারযোগ্য মাছ: হঁ্যা
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ইন্টারনেট সুত্র
Estimates based on models
Preferred temperature (Ref.
123201): 9.8 - 17.1, mean 13.2 °C (based on 157 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00194 - 0.00469), b=3.19 (3.07 - 3.31), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
ট্রফিক পর্যায়ে (Ref.
69278): 3.5 ±0.37 se; based on food items.
স্থিতিস্থাপক (Ref.
120179): নিম্ন/ , সর্বনিম্ন প্রজন দ্বিগুনের সময় ৪.৪-১৪ বৎসর (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (66 of 100).
Climate Vulnerability (Ref.
125649): Moderate vulnerability (38 of 100).
Nutrients (Ref.
124155): Calcium = 11.4 [1.5, 220.4] mg/100g; Iron = 0.693 [0.064, 8.306] mg/100g; Protein = 17.2 [14.4, 19.5] %; Omega3 = 0.486 [0.222, 1.080] g/100g; Selenium = 28.1 [5.6, 137.4] μg/100g; VitaminA = 4.78 [0.40, 50.57] μg/100g; Zinc = 0.511 [0.033, 5.798] mg/100g (wet weight);
