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Chimaeriformes (Chimaeras) >
Callorhinchidae (Plownose chimaeras)
Etymology: Callorhinchus: Tautonymous with Chimaera callorynchus Linnaeus 1758 (but unnecessarily emended from -rynchus to -rhinchus: callum (L.), hard skin; rhynchus (L.), snout, referring to peculiar hoe-shaped proboscis (See ETYFish); milii: In honor of Bory de Saint-Vincent’s “old friend” (translation) Pierre Bernard Milius (1773‒1829), a French naval officer, naturalist and civil servant, who supplied specimen upon which description and its accompanying illustration (shown here) were based; (See ETYFish).
Eponymy: Baron Pierre Bernard Milius (1773–1829) was a French naval officer, naturalist and civil servant who took part in an exploratory voyage (1804) of the Mascarene Islands, Indian Ocean, under Nicolas Baudin, during which he became friends with Bory. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / Mức độ sâu / distribution range
Sinh thái học
Biển; Thuộc về nước lợ gần đáy; Ở đại duơng, biển (Ref. 51243); Mức độ sâu 0 - 227 m (Ref. 26346). Subtropical; 33°S - 50°S
Southwest Pacific: southern Australia and New Zealand.
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Chín muồi sinh dục: Lm 71.0, range 70 - ? cm
Max length : 125 cm TL con đực/không giới tính; (Ref. 26346); common length : 75.0 cm TL con đực/không giới tính; (Ref. 9258)
Short description
Khóa để định loại | Hình thái học | Sinh trắc học
Occurs on continental shelves to depths of at least 200 m (Ref. 6871). Migrates into large estuaries and inshore bays in the spring to breed (Ref. 6871). Feeds mainly on shellfish (Ref. 26346). Oviparous (Ref. 50449). Eggs are encased in horny shells (Ref. 205). Flesh is of good eating quality. Males have a small, club-like protuberance on the head and also long copulation organs near the pelvic fins (Ref. 557).
Migrates into large estuaries and inshore bays in the spring to breed (Ref. 6871). Oviparous, two egg cases (Ref. 26346) are laid on sandy or muddy bottoms and take up to 8 months to hatch (Ref. 6871). Embryos feed solely on yolk (Ref. 50449).Young hatch at about 15 cm (Ref. 26346).
Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
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Estimates based on models
Preferred temperature (Tài liệu tham khảo
123201): 12.1 - 18.2, mean 15.2 °C (based on 179 cells).
Phylogenetic diversity index (Tài liệu tham khảo
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00203 - 0.01181), b=3.13 (2.91 - 3.35), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Mức dinh dưỡng (Tài liệu tham khảo
69278): 3.6 ±0.29 se; based on food items.
Thích nghi nhanh (Tài liệu tham khảo
120179): thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (K=0.06-0.47; tm=2-6; Fec=2).
Fishing Vulnerability (Ref.
59153): High vulnerability (55 of 100).
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Climate Vulnerability (Ref.
125649): Very high vulnerability (83 of 100).
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Nutrients (Ref.
124155): Calcium = 25.5 [6.4, 69.6] mg/100g; Iron = 0.758 [0.284, 2.957] mg/100g; Protein = 14.3 [11.2, 18.8] %; Omega3 = 0.258 [0.116, 0.579] g/100g; Selenium = 32 [9, 84] μg/100g; VitaminA = 7.14 [3.03, 17.16] μg/100g; Zinc = 0.661 [0.338, 1.252] mg/100g (wet weight);
