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Anoxypristis cuspidata  (Latham, 1794)

Pointed sawfish
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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) > Rhinopristiformes (Shovelnose rays) > Pristidae (Sawfishes)
Etymology: Anoxypristis: Greek, ana = up + Greek, oxy = sharp, pointed + Greek, pristis = saw (Ref. 45335).

環境 / 気候 / 範囲 生態学

; 海; 新鮮な水; 汽水性の 底生の漂泳性; 両側回遊性 (Ref. 51243); 深さの範囲 0 - 40 m (Ref. 9859), usually ? - 40 m (Ref. 55270).   Tropical; 43°N - 18°S, 33°E - 152°E (Ref. 55270)

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

Indo-West Pacific: Red Sea and the Persian Gulf to New Guinea, north to southern Japan, south to northern Australia (Ref. 9859). Formerly common in the Western Central Pacific, apparently declining in some areas (Ref. 47737).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 246 - 282 cm
Max length : 470 cm TL オス/雌雄の選別がない; (Ref. 9859)

簡単な記述 形態学 | 形態計測学

Greyish above, pale below; fins usually pale. Body shark-like, pectoral fins distinct; head flattened, with a blade-like snout bearing 18-22 pairs of lateral teeth; blade slender, not tapering distally. Nostrils very narrow with small nasal flaps. Rostral teeth short, flattened, broadly triangular, lacking a groove along posterior margins; no teeth on basal quarter of blade. Adults with widely spaced denticles, young with naked skin.

生物学     用語集 (例 epibenthic)

Found inshore, often in river deltas and estuaries; penetration well up rivers needs confirmation (Ref. 9859). Common in sheltered bays with sandy bottoms. Feeds on small fish and cuttlefish (Ref. 9859). Ovoviviparous (Ref. 50449). Generally harmless but its saw-like snout may cause serious injury when caught: it is known thrash violently and vigorously (Ref. 9859). Caught for its flesh and liver (which is rich in oil) in some parts of Asia (Ref. 6871). Maximum lengths of up to 610 cm TL are based on unconfirmed reports (Ref. 9859).

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

Ovoviviparous. Litter size from 6 to 23, young born in the spring (Ref. 9859).

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

Mould, B., 1994. A world list of rays. The scientific nomenclature and distribution of the recent Batoidea (Batoidea, Elasmobranchii, Chondrichthyes). University of Nottingham, [UK]. 82 p. (Ref. 8630)

IUCNのレッドリストの状況は (Ref. 115185)

  絶滅危惧 (EN) (A2cd)

CITES (Ref. 115941)

人間に対する脅威

  Harmless (Ref. 9859)




Human uses

水産業: 商業; ゲームフィッシュ: はい
FAO(Publication : search) | FisheriesWiki | 私達の周りの海

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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): 24.6 - 29.1, mean 28.2 (based on 1982 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 1.0078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00194 - 0.01235), b=3.05 (2.83 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.5   ±0.62 se; Based on food items.
回復力 (Ref. 69278):  低い, 4.5年~14年の倍増期間の最小個体群 (Fec assumed to be <100).
弱み (Ref. 59153):  Very high vulnerability (78 of 100) .
価格帯 (Ref. 80766):   Medium.