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Encyclopedia > Esociformes
Esociformes
Northern pike
Northern pike (Esox lucius)
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Superorder: Protacanthopterygii
Order: Esociformes
Families

Esocidae (pikes)
Umbridae (mudminnows) Image File history File links Download high resolution version (945x363, 32 KB) en: Northern pike (Esox lucius). ... Binomial name Esox lucius Linnaeus, 1758 The Northern Pike (Esox lucius) is a carnivorous fish of brackish and freshwaters of the northern hemisphere. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria Placozoa Subregnum Bilateria  Acoelomorpha  Orthonectida  Rhombozoa  Myxozoa  Superphylum Deuterostomia     Chordata (vertebrates, etc. ... Typical Classes Subphylum Urochordata - Tunicates Ascideiacea Thaliacea Larvacea Subphylum Cephalochordata - Lancelets Subphylum Myxini - Hagfishes Subphylum Vertebrata - Vertebrates Petromyzontida - Lampreys Placodermi (extinct) Chondrichthyes - Cartilaginous fishes Acanthodii (extinct) Actinopterygii - Ray-finned fishes Actinistia - Coelacanths Dipnoi - Lungfishes Amphibia - Amphibians Reptilia - Reptiles Aves - Birds Mammalia - Mammals Chordates (phylum Chordata) include the vertebrates, together with... Orders See text The Actinopterygii are the ray-finned fish. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ...

Esociformes is a small order of ray-finned fish, with two families. The pikes of genus Esox give the order its name. Orders See text The Actinopterygii are the ray-finned fish. ... Species  E. americanus –       grass and redfin pickerels  E. lucius – northern pike  E. masquinongy – muskellunge  E. niger – chain pickerel   – Amur pike Esox Linnaeus, 1758, is a genus of freshwater fish, the only member of the pike family (family Esocidae) of order Esociformes. ...


This order is closely related to the Salmoniformes, the two comprising the superorder Protacanthopterygii, and are often included in their order. The esociform fishes first appeared in the mid-Cretaceous -- early products of the Euteleost radiation of that time. Today they are found only in fresh water in North America and Europe. Genera (see text) Salmonidae is a family of ray-finned fish, the only family of order Salmoniformes. ... The Cretaceous period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic period (about 135 mya) to the beginning of the Paleocene epoch of the Tertiary period (65 mya). ... World map showing location of North America A satellite composite image of North America North America is a continent in the northern hemisphere, bounded on the north by the Arctic Ocean, on the east by the North Atlantic Ocean, on the south by the Caribbean Sea, and on the west... A satellite composite image of Europe Europe is geologically and geographically a peninsula, forming the westernmost part of Eurasia. ...


Most esociforms are classic ambush predators, with long well-muscled torsos, the dorsal and anal fins set well back and opposite each other for rapid acceleration along a straight line. Anatomically, they are characterized by a number of features, including teeth like sharks, absence of an adipose fin; and the absence of breeding tubercules. This snapping turtle is trying to make a meal of a Canada goose, but the goose is too wary. ... Orders See Classification and Shark taxonomy Sharks are a group (superorder Selachimorpha) of fish, with a full cartilaginous skeleton, a streamlined body plan with between 5 and 7 gill slits along the sides (most often) or side of the head (the first modified slit is behind the eye and called... Adipose tissue is an anatomical term for loose connective tissue composed of energy in the form of fat, although it also cushions and insulates the body. ...


References


  Results from FactBites:
 
Amazon.com: Esociformes (0 words)
Esociformes: An entry from Thomson Gale's Grzimek's Animal Life Encyclopedia by Juan Andrés, MS López (Digital - 2004) - HTML
Gymnotiformes 6 62 0 0 Esociformes 2 10 0 0 Osmeriformes...
punctatus -Siluris glanis -Plotosus lineatus Esociformes (pikes) ML-Esox lucius Salmoniformes (trouts...
Palaeos Vertebrates 120.600 Euteleosti: Neognathi (2580 words)
Briefly, it appears that almost all of the esociforms were subject to severe selection for cold and drought tolerance in the recent geologic past, which can do very odd things to structures of metabolic proteins.
Further, the polarity of the characters used by Wilson and Veilleux is suspect because the position of esociforms within the teleosts was unknown.
At the time, it was believed that Esociforms (usually referred to as "Esocoidei" in the older literature), were either a kind of salmoniform (as assumed by Wilson and Veilleux), or were even more basal -- perhaps even the sister of Euteleostei.
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