होलोसैफली (किमाइरस) (chimaeras) >
Chimaeriformes (Chimaeras) >
Chimaeridae (Shortnose chimaeras or ratfishes)
Etymology: Hydrolagus: hydro-, combining form of hydor (Gr.), water; lagos (Gr.), hare, i.e., “water rabbit,” probably referring to three pairs of tooth plates, which tend to protrude from the mouth like a rabbit’s incisors. (See ETYFish); colliei: In honor of Alexander Collie (1793‒1835), Scottish surgeon-naturalist aboard HMS Blossom, from which holotype was collected; his notes formed the basis of Lay & Bennett’s description. (See ETYFish).
More on authors: Lay & Bennett.
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
समुद्री बाथीड़िमरसल; गहराई सीमा 0 - 913 m (Ref. 6793), usually 50 - 400 m (Ref. 43939). Temperate; 59°N - 8°N, 141°W - 83°W
Northeastern Pacific: west coast of North America from southwestern Alaska to Baja California, Mexico, including the Gulf of California, and Costa Rica.
Length at first maturity / आकार / वज़न / Age
Maturity: Lm ?, range 19 - ? cm
Max length : 100.0 cm TL पुल्लिंग / अलिंग; (Ref. 96339)
This species is distinguished by the following characters: short and bluntly rounded snout; oral and preopercular lateral line canals not sharing a short common branch from the infraorbital canal; anterior edge of dorsal-fin spine non-serrated; anterior and posterior regions of second dorsal-fin considerably taller than the middle region; pectoral fins when depressed do not reach beyond to origin of pelvic fins; no anal fin; caudal-fin axis horizontal with the fin nearly symmetrical, epaxial
and hypaxial lobes equal sized; coloration brown or reddish brown with small white spots on head and trunk (Ref. 97389).
Found near the bottom, from close inshore to about 913 m (Ref. 2850). Abundant in cold waters at moderate depths. Feed on mollusks, crustaceans and fishes (Ref. 37955); also echinoderms and worms (Ref. 28499). The spine can be dangerous and cause a painful wound (Ref. 2850). Fishers are reputed to fear the jaws of the ratfish more than they do the dorsal spine. Its flesh is edible but bland and leaves an unpleasant aftertaste (Ref. 28499). The liver was used as a source of machine oil (Ref. 28499).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Distinct pairing during copulation (Ref. 205). The female extrudes two eggs at a time (each contained in a capsule) and may take up to 30 hours to extrude all her egg cases, which then hang from her body on a long filament for another 4 to 6 days. The egg cases end up planted vertically in the mud or just lying with filaments entangled on the bottom. Females extruding egss can be found year-round (Ref. 28499).
Allen, M.J. and G.B. Smith, 1988. Atlas and zoogeography of common fishes in the Bering Sea and northeastern Pacific. NOAA Tech. Rep. NMFS 66, 151 p. (Ref. 6793)
IUCN Red List Status (Ref. 130435)
Threat to humans
Traumatogenic (Ref. 4690)
Human uses
मात्स्यिकी: कोई रुचि बग़ैर; जलजीवालय: सार्वजनिक लजीवालय
अधिक जानकारी
संदर्भजलीयकृषिजलीयकृषि रूपरेखाखींचआनुवंशिकीElectrophoresesहैरेटिबिलटीबीमारीप्रक्रमणNutrientsMass conversion
सहयोगीयोतस्वीरेStamps, Coins Misc.ध्वनिसिगुयटिरारफ्तारतैरने के प्रकारगिल क्षेत्रOtolithsदिमागदृष्टि
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इंटरनेट स्रोत
Estimates based on models
Preferred temperature (Ref.
123201): 5.1 - 9.7, mean 7.5 °C (based on 115 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00118 - 0.00673), b=3.10 (2.89 - 3.31), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.7 ±0.54 se; based on food items.
लौटाव (Ref.
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (K=0.2-0.22; Fec=2).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (52 of 100).
Climate Vulnerability (Ref.
125649): Moderate to high vulnerability (47 of 100).
Nutrients (Ref.
124155): Calcium = 14.2 [4.5, 42.2] mg/100g; Iron = 0.301 [0.111, 1.177] mg/100g; Protein = 16.7 [11.1, 19.8] %; Omega3 = 0.508 [0.213, 1.200] g/100g; Selenium = 20.8 [4.5, 56.4] μg/100g; VitaminA = 7.5 [2.3, 24.5] μg/100g; Zinc = 0.38 [0.19, 0.70] mg/100g (wet weight);
