Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري مرتبطة بالشعاب; نطاق العمق 0 - 30 m (Ref. 26938). Subtropical; 36°N - 18°N, 99°W - 75°W (Ref. 55283)
Western Atlantic: North Carolina, USA to the northern Gulf of Mexico and Yucatan, Mexico.
الحجم / وزن / العمر
Maturity: Lm ? range ? - ? cm
Max length : 75.0 cm TL ذكر/ مختلط الجنس; (Ref. 9710); 76.0 cm TL (female); common length : 60.0 cm TL ذكر/ مختلط الجنس; (Ref. 6077)
وصف مختصر
الوصف الخارجي | قياسات المظهر الخارجي
Elongate, with a heart-shaped disk terminating in a wedge-shaped snout with a few enlarged tubercles on tip (Ref. 26938). Ashy gray to olive brown or chocolate brown. Entire upper surface is thickly freckled with several hundred small whitish dots. Lower surface is pale yellow or yellowish white or plain white, fins slightly darker than trunk (Ref. 6902).
Inhabits sandy and weedy bottoms, sometimes near patch reefs. Also found along beaches from shoreline to depths of 30 m (Ref. 26938). Usually buried in the sand or mud. Feeds on mollusks and crustaceans. Ovoviviparous, with up to 6 in a litter (Ref. 12951). Size at birth 20 cm (Ref. 12951). Generally uncommon (Ref. 9710).
Life cycle and mating behavior
النضج | التكاثر | وضع البيض | بيض | الخصوبة | Larvae
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).
Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)
IUCN Red List Status (Ref. 130435)
استخدامات بشرية
مصائد: مصائد تستهلك محلينا
مزيد من المعلومات
العمر/ الحجمنموالطول-الوزنالطول-الطولالطول- التردداتقياسات المظهر الخارجيالوصف الخارجيLarvaeحركة انتقال اليرقاتتوظيفالوفرةBRUVS
مراجعالأستزراع المائيملف الأستزراع المائيسلالاتجينيElectrophoresesالتوريثالأمراضمعالجةNutrientsMass conversion
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 23.4 - 27.8, mean 26.3 °C (based on 280 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00135 - 0.00588), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.6 ±0.50 se; based on food items.
المرونه (Ref.
120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
Nutrients (Ref.
124155): Calcium = 12.2 [1.5, 49.3] mg/100g; Iron = 0.424 [0.102, 1.177] mg/100g; Protein = 20.1 [17.9, 22.2] %; Omega3 = 0.128 [0.053, 0.310] g/100g; Selenium = 11.3 [3.2, 35.3] μg/100g; VitaminA = 33 [11, 104] μg/100g; Zinc = 0.63 [0.30, 1.34] mg/100g (wet weight);
