Pristis


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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Pristis

 

(sawfish), the only genus of the family Pristidae. Sawfish are distinguished from other rays by their greatly elongated and flattened snout, which has toothlike structures on both sides. Saw sharks have a similar snout, but sawfish have a flatter body, no cirra, and ventral gill openings. There are seven species, distributed in the tropical and subtropical waters of oceans throughout the world. They live in shallows and occasionally enter rivers. Sawfish feed on fish and on invertebrates, which they sometimes dig up from the sand or mud with their snout. They are oviviviparous, producing 15 to 20 young. The American, or smalltooth, sawfish (P. pectinatus) reaches a length of 4.8 m and a weight of 2 tons. Sawfish have almost no commercial significance, and they are not harmful to man.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Movement patterns and habitat use of smalltooth sawfish, Pristis pectinata, determined using pop-up satellite archival tags.
Destaca-se tambem na dinamica do tratamento 12-8, o qual teve reducao na disponibilidade de especies como Panicum hians, Andropogon lateralis MP, Centella asiatica, Briza subaristata, Aristida jubata MP, Panicum sabulorum, Schizachyrium microstachyum, Eryngium horridum, Baccharis trimera, Axonopus spp., Sporobolus indicus, Paspalum notatum e Desmodium incanum e aumento na disponibilidade das especies Piptochaetium montevidense, Eryngium sp., Paspalum paucifolium, Eryngium pristis e Leptocoryphium lanatum.
viridis Nov 2002 Everglades 4 Many specimens attached to gill net entangled on Pristis pectinata Latham 1794 rostrum.
The description is similar to the start of the ship race at lines 151ff.: Gyas is the first to take the lead, then comes Cloanthus, then two ships, Pristis and Centaurus, vie with each other: et nunc Pristis habet, nunc victam praeterit ingens Centaurus ...
Storer (1845), in his "A Synopsis of the Fishes of North America," included 14 species in his Squalidae (which included the genus Pristis).
Resultados y discusion Subclase Caenogastropoda Orden Neotaenioglosa Suborden Neogastropoda Superfamilia Muricoidea Familia Buccinidae Rafinesque, 1815 Subfamilia Photinae Genero Northia Gray, 1847 Northia pristis (Deshayes in Lamarck, 1844)
Comunicaciones personales aportan informacion de la presencia de otras especies de gran importancia biologica como el pez sierra (Pristis pectinata) y el gaspar A.
So, firstly, singay is a term used for a sawfish (Pristis microdon)--and its sawteeth--regarded as a powerful spirit living deep in the water.
Clasificacion Nombre comun Animalia Chordata Vertebrata Gnathostomata CONDRICHTHYES Elasmobranchii ORECTOLOBIFORMES Ginglymostomatidae Ginglymostoma cirratum tiburon gato (Bonnaterre, 1788) CARCHARHINIFORMES Triakidae Mustelus lunulatus Jordan & vieja Gilbert, 1883 Hemigaleidae Triaenodon obesus (Ruppell, 1837) tiburon toro Carcharhinidae Carcharhinus limbatus (Muller & tollo Aletinegro Henle, 1839) Sphyrnidae Sphyrna lewini (Griffith & chachuda Smith, 1834) Sphyrna tiburo (Linnaeus, 1758) PRISTIFORMES Pristidae Pristis sp.
Today, remnant North American populations of the smalltooth species (Pristis pectinata) persist in south Florida and the Bahamas.
The smalltooth sawfish (Pristis pectinata) population in US waters has declined dramatically over the past century, and today it occurs in only a small fraction of its former range.