Definition, Betydelse & Anagram | Engelska ordet STURGEONS

Definition av STURGEONS

1. böjningsform av sturgeon

Exempel på hur man kan använda STURGEONS i en mening

• It was established in 1615, by the employer Mikhail Guriev, who applied the decree to tzar Mikhail Fedorovich for a monopoly in the mouth of Ural to fish sturgeons.
• Paddlefish (family Polyodontidae) are a family of ray-finned fish belonging to order Acipenseriformes, and one of two living groups of the order alongside sturgeons (Acipenseridae).
• Dating back to the Permian period, the Actinopteri comprise the Chondrostei (sturgeons and paddlefish), the Holostei (bowfins and gars), and the teleosts; in other words, all extant ray-finned fish other than the bichirs.
• The name is explained by the fact that the settlement supplied the Muscovite court with choice sturgeons and sterlets.
• The term is also used to describe the heavy armour of the armadillo and the extinct Glyptodon, and is occasionally used as an alternative to scales in describing snakes or certain fishes, such as sturgeons, shad, herring, and menhaden.
• The electroreceptive ampullae of Lorenzini evolved early in the history of the vertebrates; they are found in both cartilaginous fishes such as sharks, and in bony fishes such as coelacanths and sturgeons, and must therefore be ancient.
• The genus is paraphyletic, containing all sturgeons that do not belong to Huso, Scaphirhynchus, or Pseudoscaphirhynchus, with many species more closely related to the other three genera than they are to other species of Acipenser.
• The stillness of the waters helps the sturgeons to not have to swim against water currents and consequently be fattier, which allows its roe to be tastier and richer.
• The enigmatic Cylindracanthus, known from the Late Cretaceous to the Eocene, is sometimes considered a "billfish" related to blochiids on the basis of its presumed rostral spines, but no other fossils are known of it aside from its rostral spines, leading to the suggestion that it had a cartilaginous body and may even be a relative of sturgeons.
• In the reserve is an interesting didactic aquarium containing the river ichthyic species more typical: carps, tenches, perches, catfishes, sturgeons, crayfishes are only some of the species that can be observed and experience.
• The sturgeons themselves are not ancestral to modern bony fishes but are a highly specialized and successful offshoot of ancestral chondrosteans, retaining such ancestral features as a heterocercal tail, fin structure, jaw structure, and spiracle.
• Azerbaijan's fish farming establishments and hatcheries account for breeding of 20 million sturgeons, 600 thousand salmons, over 800 thousand.
• While some and perhaps most palaeoniscoids likely belong to the stem-group of Actinopteryii, it has been suggested that some may belong to the crown group, with some of these possibly related to Cladistia (containing bichirs) and/or Chondrostei (which contains sturgeons and paddlefish).
• The aquarium also has skates, bat rays and thousands of other animals including eels, flatfish, rockfish, wrasse, gobies, kelpfish, pricklebacks, sculpin and sturgeons.
• Animals present include chondrichthyans (sharks and rays), gars, bowfin, sturgeons, frogs, salamanders, turtles, lizards, crocodilians (including Deinosuchus), coelurosaurian theropods such as dromaeosaurids, troodontids, and Ornithomimus velox, armored dinosaurs, the duckbill Parasaurolophus cyrtocristatus, and a variety of early mammals including multituberculates, marsupials, and insectivorans.
• In a paper published in July 2020, eggs from three Russian sturgeons were crossbred with American paddlefish using sperm from four male paddlefishes, resulting in successful hybrids called sturddlefish.
• However, a number of organisations are concerned in attempts to preserve this species and a captive breeding scheme has been established, with young microchipped fish released into the wild officially since 2004, following EU projects (Life03nat/IT/000113 and subsequents); before 2004, almost only post-larvae and very small sturgeons were released (since 1988), at a time when fishing of sturgeons was still allowed in Italy (until 1997) and the allochthonous wels catfish (Silurus glanis) was at the apex of its numerical expansion in Italian rivers, so the survival rate was extremely low.
• Together, they are also often recovered as stem chondrosteans, closely related to sturgeons and paddlefish (Acipenseriformes), with their exact relationship to each other and to sturgeons/paddlefish varying depending on the study.
• While the Duchess of Marlborough recorded that dinner (she sat beside the Tsar) was protracted and comprised "soups, caviar and monster sturgeons, meat and game, pates and primeurs, ices and fruits, all mounted on gold and silver plate fashioned by Germain".
• Similar to the type of scales found in sturgeons, paddlefishes, gars, and bowfin, bichirs also share the trait of ganoid scales.

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