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Pseudocarcharias kamoharai  (Matsubara, 1936)

Crocodile shark
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Pseudocarcharias kamoharai
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分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Lamniformes (Mackerel sharks) > Pseudocarchariidae (Crocodile sharks)
Etymology: Pseudocarcharias: Greek, pseudes = false + Greek, karcharos = sharpen (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range 生態学

; 海; 海洋回遊性 (Ref. 51243); 深さの範囲 0 - 590 m (Ref. 6871), usually 0 - 200 m (Ref. 54740).   Subtropical; 40°N - 40°S, 180°W - 180°E

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Tropical and subtropical waters of all oceans.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm 91.6, range 89 - ? cm
Max length : 110 cm TL オス/雌雄の選別がない; (Ref. 43278); 122.0 cm TL (female); common length : 100.0 cm TL オス/雌雄の選別がない; (Ref. 13569)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 0; 背鰭 (合計): 0; 肛門の骨 0; 臀鰭: 0. A medium-sized spindle-shaped shark with very large eyes lacking a nictitating membrane, long gill slits extending onto dorsal surface of head, lanceolate teeth, weak keel and precaudal pits on caudal peduncle (Ref. 6871, 43278). Small and low dorsal fins, with second dorsal fin less than half the size of the first but larger than the anal fin (Ref. 6871). Pectoral fin broad and rounded (Ref. 6871). Light or dark grey above, paler below, fins white-edged, sometimes with small white spots on body and a white blotch between mouth and gill slits (Ref. 13569).

生物学     用語集 (例 epibenthic)

An oceanic species usually found offshore and far from land but sometimes occurring inshore (Ref. 9993, 43278, 58302). Epi- and mesopelagic, with occasional near-bottom occurrences (Ref. 43278, 58302). Although considered not dangerous to people, its powerful jaws, jaw muscles and teeth invite respect. Flesh not appreciated and therefore the catch is usually discarded (Ref. 247); utilized for its large, squalene-rich liver (Ref. 9993). Feeds on small pelagic bony fishes, squids and shrimps (Ref. 5578). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). With 4 young in a litter, born at 40 to 43 cm TL (Ref. 12288). Maximum length for female given in Romanove et.al 1994 (Ref. 44781). Common bycatch of tuna longline fisheries, and occasionally tuna gillnet fisheries (Ref.58048).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). With 4 young in a litter, born at 40-43 cm (Ref. 11228).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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のレッドリストの状況は (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Harmless




Human uses

水産業: 少数商業の
FAO(水産業: 代謝, 種の外形; publication : search) | FishSource | 私達の周りの海

より多くの情報

共通名の
類義語
代謝
捕食動物
生態毒性
繁殖
成熟
放精
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形態計測学
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シガテラ(食中毒の名前)
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インターネットの情報源

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 16.3 - 28.2, mean 24.9 (based on 3402 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 1.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.2   ±0.60 se; Based on food items.
回復力 (Ref. 69278):  非常に低い, 14年以上の倍増期間の最小個体群 (Fec=4).
弱み (Ref. 59153):  High to very high vulnerability (66 of 100) .
価格帯 (Ref. 80766):   Unknown.