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Pristis pristis (Linnaeus, 1758)

Common sawfish
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Pristis pristis   AquaMaps   Data sources: GBIF OBIS
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Pristis pristis
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分类 / Names 俗名 | 同种异名 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) > Rhinopristiformes (Shovelnose rays) > Pristidae (Sawfishes)
Etymology: Pristis: Greek, pristis = saw (Ref. 45335).  More on author: Linnaeus.

Environment: milieu / climate zone / depth range / distribution range 生态学

; 海洋; 淡水; 半咸淡水 居于水底的; 海洋洄游的 (Ref. 51243); 深度上下限 25 - ? m (Ref. 114953).   亞熱帶的; 35°N - 40°S, 120°W - 160°E (Ref. 114953)

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Circumglobally in tropical and subtropical waters, entering estuaries and littoral lagoons and ascending river courses (Ref. 81284, 81624). Western Atlantic: Florida and Louisiana, USA to Brazil (Ref. 7251); eastern Atlantic: Portugal to Angola, including the western Mediterranean Sea (Ref. 4429; no report since the 19th century [Ref. 116564] ); western Pacific: northern Australia, from western Australia to Queensland (Ref. 7300); eastern Pacific: Gulf of California to Ecuador (Ref. 4429). In freshwater it can be found in rivers of West Africa (Ref. 81284), Ogowe River (Ref. 81284) and the Congo River estuary (Ref. 377, 81284).
西太平洋: 澳洲北部, 從澳洲西部到昆士蘭省.(參考文獻 7300) 東太平洋: 加州灣到厄瓜多。 西大西洋: 佛羅里達與美國路易斯安那州到巴西.(參考文獻 7251) 東大西洋: 葡萄牙到安哥拉, 包括地中海西部。

Length at first maturity / 大小 / 重量 / 年龄

Maturity: Lm ?, range 300 - 300 cm
Max length : 750 cm TL 雄鱼/尚未辨别雌雄; (Ref. 57708); common length : 250 cm TL 雄鱼/尚未辨别雌雄; (Ref. 4429); 最大年龄: 30 年 (Ref. 57533)

简单描述 型态特徵 | 形态测量图

Diagnosis: Rostral blade with 20 or fewer pairs of rostral spines (Ref. 81624).

生物学特性     字汇 (例如 epibenthic)

A euryhaline species (Ref. 57533). Inhabits inshore coastal waters to moderate depth, also around off lying islands. Found also in estuaries, lagoons, river mouths, and even freshwater. Feeds on fishes and bottom-living animals. Ovoviviparous. Apparently can reproduce in freshwater (Ref. 57533). Freshwater populations occur to about 750 km up Amazon River; populations in Lake Nicaragua may be non-migratory (Ref. 7251). Reaches sexual maturity at 8-10 years and females have litters of approximately 1-13 pups. Young spend much of their early life in rivers up to 400 km from the sea (Ref. 114953).

栖息于近海沿岸水域到中等深度, 也外海的横卧岛周围。 也发现于河口,泻湖,河口了, 甚至淡水。 吃鱼与底栖生物动物。 卵胎生的。 淡水的族群出现到大约 750个公里上游亚马逊河; 在湖尼加拉瓜的族群可能是非回游性。 (参考文献 7251)

Life cycle and mating behavior 成熟度 | 繁殖 | 产卵场 | | 孕卵数 | 仔鱼

Ovoviviparous, embryos feed solely on yolk (Ref. 50449).西太平洋: 澳洲北部, 從澳洲西部到昆士蘭省.(參考文獻 7300) 東太平洋: 加州灣到厄瓜多。 西大西洋: 佛羅里達與美國路易斯安那州到巴西.(參考文獻 7251) 東大西洋: 葡萄牙到安哥拉, 包括地中海西部。

主要参考文献 Upload your references | 参考文献 | 合作者 : McEachran, John | 合作者

Stehmann, M., 1990. Pristidae. p. 51-54. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1. (Ref. 4429)

世界自然保护联盟红皮书 (Ref. 120744)

  极度濒危 (CR) (A2cd); Date assessed: 14 June 2012

CITES (Ref. 118484)


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Estimates based on models

Preferred temperature (Ref. 115969): 20.1 - 29.1, mean 27.8 (based on 1796 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5234   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00200 - 0.01258), b=3.05 (2.83 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
营养阶层 (Ref. 69278):  4.0   ±0.60 se; Based on food items.
回复力 (Ref. 120179):  低的, 最小族群倍增时间4.5 - 14 年 (tmax=30; Fec assumed to be <100).
脆弱性 (Ref. 59153):  Very high vulnerability (75 of 100) .
价格分类 (Ref. 80766):   Medium.