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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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Classification / Names आम नाम | उपशब्द | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

इलाज़मौबरांकी (शारक और रेज़) (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 पारिस्थितिकी

; समुद्री; स्वच्छ जल, अलवण जल; खारा ड़िमरसल; औशिनोड़िरोमस (Ref. 51243); गहराई सीमा 25 - ? m (Ref. 114953).   Subtropical; 35°N - 40°S, 120°W - 160°E (Ref. 114953)

वितरण देश | ऐफ ऐ ओ क्षेत्र | Ecosystems | संयोग | Point map | भूमिका | Faunafri

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).

Length at first maturity / आकार / वज़न / Age

Maturity: Lm ?, range 300 - 300 cm
Max length : 750 cm TL पुल्लिंग / अलिंग; (Ref. 57708); common length : 250 cm TL पुल्लिंग / अलिंग; (Ref. 4429); अधिकतम सूचित उम्र: 30 वर्षो (Ref. 57533)

Short description आकृति विज्ञान | मौरफोमैटरिक्स

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

जीवविज्ञान     शब्द संग्रह (उदाहरणार्थ 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).

Life cycle and mating behavior परिपक्व अवधि | पुनरुत्पत्ति | मछलीऔ का अंडे देना | अंडे | Fecundity | लार्वा

Ovoviviparous, embryos feed solely on yolk (Ref. 50449).

Main reference Upload your references | संदर्भ | संयोजक : McEachran, John | सहयोगीयो

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)

IUCN Red List Status (Ref. 120744)

  Critically Endangered (CR) (A2cd); Date assessed: 14 June 2012

CITES (Ref. 118484)


Threat to humans

  Harmless





Human uses

मात्स्यिकी: लघु वाणिज्य
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अधिक जानकारी

आम नाम
उपशब्द
चपायचय
परभक्षी
ईकोटोकसीकोलौजी
पुनरुत्पत्ति
परिपक्व अवधि
मछलीऔ का अंडे देना
Spawning aggregation
Fecundity
अंडे
Egg development
Age/Size
बाढ़
Length-weight
Length-length
Length-frequencies
मौरफोमैटरिक्स
आकृति विज्ञान
लार्वा
लारवल गतिकी
भर्ती
बहुतायत
संदर्भ
जलीयकृषि
जलीयकृषि रूपरेखा
खींच
आनुवंशिकी
ऐल्लि आवृतियाँ
हैरेटिबिलटी
बीमारी
प्रक्रमण
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सहयोगीयो
तस्वीरे
Stamps, Coins Misc.
ध्वनि
सिगुयटिरा
रफ्तार
तैरने के प्रकार
गिल क्षेत्र
Otoliths
दिमाग
दृष्टि

साधन

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इंटरनेट स्रोत

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).
Trophic Level (Ref. 69278):  4.0   ±0.60 se; Based on food items.
लौटाव (Ref. 120179):  निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (tmax=30; Fec assumed to be <100).
Vulnerability (Ref. 59153):  Very high vulnerability (75 of 100) .
Price category (Ref. 80766):   Medium.