Môi trường: môi trường / vùng khí hậu / Mức độ sâu / phạm vi phân phối
Sinh thái học
biển gần đáy; mức độ sâu ? - 40 m (Ref. 120403). Temperate; 4°C - 19°C (Ref. 104541); 18°S - 57°S, 75°W - 52°W
Southeast Pacific: central Chile to the Strait of Magellan.
Chiều dài lúc trưởng thành đầu tiên / Bộ gần gũi / Khối lượng (Trọng lượng) / Tuổi
Chín muồi sinh dục: Lm 103.5, range 94 - 100 cm
Max length : 152 cm TL con đực/không giới tính; (Ref. 120403)
This medium-sized speies of Dipturus (up to at least 118.0 cm TL) is distinguished from its congeners by the following set of characters: when fresh, the dorsal surface of body is plain brownish to greyish, with some lighter small spots randomly distributed dorsally; one red to purple ocellus over center of each pectoral fin; ocelli with well-defined margins, irregular in shape, but often indistinguishable in fixed specimens; ventrally, white to grey with lighter patches over area of gill openings and beneath mouth; area flanking rostral cartilage membranous and slightly translucent and opaque and yellowish when fixed. Further differs by having a relatively broad disc with angular apices, its width 76.4 (75.0; 77.0) % TL; snout relatively short and broad; tail longer in males (42.2 [40.8] % TL) than in female voucher ([38.8] % TL); ventral head length 35.1 (34.2; 37.7) % TL; preorbital snout length 2.4 (2.9; 2.9) times distance between orbits; orbit diameter 0.5 (0.5; 0.6) of inter-orbital width; in males, the dorsal surface of disc and tail with central longitudinal band of dermal denticles extending from anterior margin of rostral cartilage to tail, including anterior margins of dorsal and caudal fins; a thin band of dermal denticles at anterior margins of pectoral fins, extending from anterior fontanelle to front line of alar thorn patches; dorsal surface of disc and tail of females covered with small dermal denticles, except for external margins of pectoral fins, pelvic fins, and area surrounding caudo-central thorns; with orbital thorns; a single nuchal thorn is often absent; both sexes without scapular thorns; a patch of malar thorns only in adult males; alar thorns only in adult males; medial-dorsal and lateral-dorsal thorns may be present in large specimens, especially in large females; small central-caudal thorns mostly arranged in longitudinal pairs in males and females, with two additional longitudinal rows of fine, sharp and posteriorly oriented lateral-caudal thorns may be present in large specimens; ventral sensory pores are small, distinct, black-edged, most abundant on snout and around mouth, scattered over area between gill openings, sparsely spaced on abdominal area and pectoral fins (Ref. 120403).
Cross section: flattened.
Oviparous (Ref. 50449). Reported size at hatching and incubation period 17.2 cm TL and 252 days, respectively (Ref. 120403). Eggs have horn-like projections on the shell (Ref. 205). Inhabits sandy and muddy bottoms at depths (Ref. 104541).
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Concha, F.J., J. Caira, D.A. Ebert and J.H.W. Pomperi, 2019. Redescription and taxonomic status of Dipturus chilensis (Guichenot, 1848), and description of Dipturus lamillai sp. nov. (Rajiformes: Rajidae), a new species of long-snout skate from the Falkland Islands. Zootaxa 4590(5):501-524. (Ref. 120403)
Tình trạng Sách đỏ IUCN (Ref. 130435: Version 2025-2 (Global))
Mối đe dọa đối với con người
Harmless
Sử dụng của con người
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Chỉ số đa dạng phát sinh loài (Tài liệu tham khảo 82804) |
PD50 = 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00309 (0.00144 - 0.00663), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Mức dinh dưỡng (Tài liệu tham khảo 69278) |
4.5 ±0.6 se; based on diet studies. |
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Generation time |
9.5 (8.1 - 12.6) years. Estimated as median ln(3)/K based on 13 growth studies. |
Thích nghi nhanh (Tài liệu tham khảo 120179) |
thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (Fec assumed to be <100). |
Sự dễ bị tổn thương của nghề đánh cá (Ref. 59153) |
High to very high vulnerability (71 of 100). 🛈 |
Loại giá (Ref. 80766) |
Medium.
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Chất dinh dưỡng (Ref. 124155) |
Calcium = 3.18 [0.45, 55.95] mg/100g; Iron = 0.198 [0.018, 2.222] mg/100g; Protein = 15.2 [12.7, 18.3] %; Omega3 = 0.698 [0.304, 1.673] g/100g; Selenium = 18.6 [3.7, 89.1] μg/100g; VitaminA = 4.17 [0.30, 53.72] μg/100g; Zinc = 0.25 [0.02, 2.75] mg/100g (wet weight); based on nutrient studies. |