इलाज़मौबरांकी (शारक और रेज़) (sharks and rays)
(Mackerel sharks) > Lamnidae
(Mackerel sharks or white shark)
Etymology: Lamna: From the Greek lamia, a large and voracious shark, originally from Lamia in Greek mythology, daughter of King Belos, who revenged the murder of her children by killing the children of others, and who behaved so cruelly that her face turned into a nightmarish mask. (See ETYFish); ditropis: di-, from dis (L.), in two; tropis (Gr.), keel, i.e., double-keeled, referring to the rudder-like projections on either side of tail. (See ETYFish).
More on authors: Hubbs & Follett.
Environment: milieu / climate zone / depth range / distribution range
; समुद्री; औशिनोड़िरोमस (Ref. 51243); गहराई सीमा 0 - 650 m (Ref. 50550), usually 0 - 152 m (Ref. 55221). Boreal; 66°N - 22°N, 120°E - 115°W
North Pacific: Japan, Korea, and the Sea of Okhotsk to the Bering Sea and southward to southern California, USA (Ref. 247) and Baja California, Mexico (Ref. 9253).
Length at first maturity / आकार / वज़न / Age
Maturity: Lm ?  range ? - 221 cm
Max length : 305 cm TL पुल्लिंग / अलिंग; (Ref. 247); common length : 180 cm TL पुल्लिंग / अलिंग; (Ref. 9988); अधिकतम प्रकाशित वज़न: 175.0 kg (Ref. 9988); अधिकतम सूचित उम्र: 27 वर्षो (Ref. 119696)
पृष्ठीय रीढ़ (सम्पूर्ण): 0; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 0; गुदा कांटा 0; ऐनल सौफट रेज़: 0. First dorsal fin uniformly dark, no light rear tip; ventral surface of body white with dusky blotches (Ref. 247).
A coastal-littoral and epipelagic shark that prefers boreal to cool temperate waters, from the surface to at least 152 m, and is common in continental offshore waters but range inshore to just off beaches. Occurs singly or in schools or feeding aggregations of several individuals; feeds on fishes (Ref. 247). Seasonally migratory (following food prey) and segregate by age and sex where adults move further north than young (Ref. 58085). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). With up to 4 young in a litter (Ref. 247). Fast swimmer (Ref. 9988). Potentially dangerous but has never or seldom been implicated in human attacks (Ref. 247). Causes considerable damage to commercial catches and gear (Ref. 6885). Utilized fresh, dried or salted, and frozen; fins, hides and livers are also used, with fins having particular value; can be broiled and baked (Ref. 9988). Reported to attain at least 27 years of age and reach maximum depth of at least 792 m (in Ref. 119696).
Life cycle and mating behavior
परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा
Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). Litter size is up to 4 young (Ref. 247). Distinct pairing with embrace (Ref. 205).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Red List Status (Ref. 125652)
Threat to humans
मात्स्यिकी: लघु वाणिज्य; आखेट मत्स्य: हां
संदर्भजलीयकृषिजलीयकृषि रूपरेखाखींचआनुवंशिकीऐल्लि आवृतियाँहैरेटिबिलटीबीमारीप्रक्रमणNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 1.7 - 8.7, mean 4.7 °C (based on 832 cells).
Phylogenetic diversity index (Ref. 82805
= 0.7813 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00410 - 0.02122), b=3.04 (2.85 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.5 ±0.80 se; based on food items.
Generation time: 6.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
लौटाव (Ref. 120179
): बहुत नीचे, न्यूनतम जनसंख्या दुगनी समय अवलागत 14 महीने। (Fec=4).
Fishing Vulnerability (Ref. 59153
): High vulnerability (59 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .
Nutrients (Ref. 124155
): Calcium = 6.09 [0.83, 20.16] mg/100g ; Iron = 0.391 [0.096, 1.070] mg/100g ; Protein = 19.3 [17.0, 21.6] % ; Omega3 = 0.391 [0.166, 0.887] g/100g ; Selenium = 18.3 [5.0, 54.2] μg/100g ; VitaminA = 4.85 [1.21, 20.35] μg/100g ; Zinc = 0.221 [0.106, 0.448] mg/100g (wet weight);