The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently.
60-553: The walleye ( Sander vitreus , synonym Stizostedion vitreum ), also called the walleyed pike , yellow pike , yellow pikeperch or yellow pickerel , is a freshwater perciform fish native to most of Canada and to the Northern United States . It is a North American close relative of the European zander , also known as the pikeperch. The walleye is sometimes called the yellow walleye to distinguish it from
120-437: A nomen oblitum , and the junior name declared a nomen protectum . This rule exists primarily to prevent the confusion that would result if a well-known name, with a large accompanying body of literature, were to be replaced by a completely unfamiliar name. An example is the European land snail Petasina edentula ( Draparnaud , 1805). In 2002, researchers found that an older name Helix depilata Draparnaud, 1801 referred to
180-514: A 60 cm (24 in) walleye will likely weigh about 2.5 kg (5.5 lb). The Garrison Dam National Fish Hatchery at Garrison Dam, North Dakota , is the largest walleye hatchery in the world. Although they are in high demand for fishing and consumption in North Dakota, elsewhere they are considered a nuisance. For that reason GDNFH is also researching hormonal population control to provide control options to other areas. In most of
240-485: A good "walleye chop" (i.e., rough water) occurs. Their vision also allows the fish to populate the deeper regions in a lake, and they can often be found in deeper water, particularly during the warmest part of the summer and at night. Walleyes are largely olive and gold in color (hence the French common name: doré —golden). The dorsal side of a walleye is olive, grading into a golden hue on the flanks. The olive/gold pattern
300-437: A junior subjective synonym. Objective synonyms are common at the rank of genera, because for various reasons two genera may contain the same type species; these are objective synonyms. In many cases researchers established new generic names because they thought this was necessary or did not know that others had previously established another genus for the same group of species. An example is the genus Pomatia Beck, 1837, which
360-428: A listing of "synonyms", a "synonymy", often contains designations that for some reason did not make it as a formal name, such as manuscript names, or even misidentifications (although it is now the usual practice to list misidentifications separately ). Although the basic principles are fairly similar, the treatment of synonyms in botanical nomenclature differs in detail and terminology from zoological nomenclature, where
420-440: A species is moved to a different genus, a variety is moved to a different species, etc. Synonyms also come about when the codes of nomenclature change, so that older names are no longer acceptable; for example, Erica herbacea L. has been rejected in favour of Erica carnea L. and is thus its synonym. To the general user of scientific names, in fields such as agriculture, horticulture, ecology, general science, etc.,
480-434: A species, or simple ignorance about an earlier description, may lead a biologist to describe a newly discovered specimen as a new species. A common reason for objective synonyms at this level is the creation of a replacement name. A junior synonym can be given precedence over a senior synonym, primarily when the senior name has not been used since 1899, and the junior name is in common use. The older name may be declared to be
540-418: A synonym is a name that was previously used as the correct scientific name (in handbooks and similar sources) but which has been displaced by another scientific name, which is now regarded as correct. Thus Oxford Dictionaries Online defines the term as "a taxonomic name which has the same application as another, especially one which has been superseded and is no longer valid". In handbooks and general texts, it
600-418: A synonym is not interchangeable with the name of which it is a synonym. In taxonomy, synonyms are not equals, but have a different status. For any taxon with a particular circumscription , position, and rank, only one scientific name is considered to be the correct one at any given time (this correct name is to be determined by applying the relevant code of nomenclature ). A synonym cannot exist in isolation: it
660-481: A taxon, some of this (including species descriptions, distribution, ecology and more) may well have been published under names now regarded as outdated (i.e., synonyms) and so it is again useful to know a list of historic synonyms which may have been used for a given current (valid) taxon name. Objective synonyms refer to taxa with the same type and same rank (more or less the same taxon, although circumscription may vary, even widely). This may be species-group taxa of
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#1732780689341720-402: A watershed are quite similar and are genetically distinct from those of nearby watersheds. The species has been artificially propagated for over a century and has been planted on top of existing populations or introduced into waters naturally devoid of the species, sometimes reducing the overall genetic distinctiveness of populations. The name "walleye" comes from its pearlescent eyes caused by
780-565: Is Fort Peck Dam (near Fort Peck, Montana ). The dams downstream of Garrison Dam are: Oahe Dam (near Pierre, South Dakota ), Big Bend Dam (near Fort Thompson, South Dakota ), Fort Randall Dam (near Pickstown, South Dakota ), and Gavins Point Dam (near Yankton, South Dakota ). These six mainstem dams impound these Missouri River reservoirs with a total combined water storage capacity of approximately 73,129,000 acre⋅ft (90.203 km ) and approximately 1,111,884 acres (449,963 ha) of water surface area. In June 2011, in response to
840-645: Is a culturally significant food in the Upper Midwest . Walleye is popular in Minnesota; the Minnesota Legislature declared walleye the official state fish in 1965. Three towns— Garrison, Minnesota , Baudette, Minnesota , and Garrison, North Dakota —each claim to be the "Walleye Capital of the World" and a large statue of the fish is erected in each town. Walleye pike was declared
900-628: Is a term used by walleye anglers for rough water typically with winds of 10 to 25 km/h (6 to 16 mph), and is one of the indicators for good walleye fishing due to the walleyes' increased feeding activity during such conditions. In addition to fishing this chop, night fishing with live bait can be very effective. The current all-tackle world record for a walleye is held by Mabry Harper, who caught an 11.34-kg (25-lb) walleye in Old Hickory Lake in Tennessee on 2 August 1960. Walleye
960-493: Is always an alternative to a different scientific name. Given that the correct name of a taxon depends on the taxonomic viewpoint used (resulting in a particular circumscription, position and rank) a name that is one taxonomist's synonym may be another taxonomist's correct name (and vice versa ). Synonyms may arise whenever the same taxon is described and named more than once, independently. They may also arise when existing taxa are changed, as when two taxa are joined to become one,
1020-413: Is broken up by five darker saddles that extend to the upper sides. The color shades to white on the belly. The mouth of a walleye is large and is armed with many sharp teeth. The first dorsal and anal fins are spinous, as is the operculum . Walleyes are distinguished from their close relative the sauger by the white coloration on the lower lobe of the caudal fin, which is absent on the sauger. In addition,
1080-758: Is given by the parents to the eggs or fry. The eggs are slightly adhesive and fall into spaces between rocks. The incubation period for the embryos is temperature-dependent, but generally lasts from 12 to 30 days. After hatching, the free-swimming embryos spend about a week absorbing a relatively small amount of yolk . Once the yolk has been fully absorbed, the young walleyes begin to feed on invertebrates , such as fly larvæ and zooplankton . After 40 to 60 days, juvenile walleyes become piscivorous . Thenceforth, both juvenile and adult walleyes eat fish almost exclusively, frequently yellow perch or ciscoes , moving onto bars and shoals at night to feed. Walleye also feed heavily on crayfish, minnows, and leeches. The walleye
1140-410: Is not correct for the circumscription , position, and rank of the taxon as considered in the particular botanical publication. It is always "a synonym of the correct scientific name", but which name is correct depends on the taxonomic opinion of the author. In botany the various kinds of synonyms are: In botany, although a synonym must be a formally accepted scientific name (a validly published name):
1200-528: Is often expanded in taxonomic literature to include pro parte (or "for part") synonyms. These are caused by splits and circumscriptional changes. They are usually indicated by the abbreviation "p.p." For example: Garrison Dam#Fishing Garrison Dam is an earth-fill embankment dam on the Missouri River in central North Dakota , U.S. Constructed by the U.S. Army Corps of Engineers from 1947 to 1953, at over two miles (3.2 km) in length,
1260-529: Is part of the North American clade within the genus Sander , alongside the sauger ( S. canadensis ). Hubbs described a taxon called the blue walleye ( S. glaucus ) from the Great Lakes but subsequent taxonomic work showed no consistent differences between this form and the "yellow" walleye and the blue walleye is now considered to be a synonym and color variant of the walleye. The walleye
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#17327806893411320-528: Is regulated by most natural resource agencies. Management may include the use of quotas and length limits to ensure that populations are not overexploited . For example, in Michigan , walleyes shorter than 15 in (38 cm) may not be legally kept. Since walleyes have excellent visual acuity under low illumination levels, they tend to feed more extensively at dawn and dusk, on cloudy or overcast days, and under choppy conditions when light penetration into
1380-411: Is useful to have synonyms mentioned as such after the current scientific name, so as to avoid confusion. For example, if the much-advertised name change should go through and the scientific name of the fruit fly were changed to Sophophora melanogaster , it would be very helpful if any mention of this name was accompanied by "(syn. Drosophila melanogaster )". Synonyms used in this way may not always meet
1440-548: The 2011 Missouri River Floods , the dam was releasing more than 140,000 cubic feet per second (4,000 m /s), which greatly exceeded its previous record release of 65,000 cu ft/s (1,800 m /s) set in 1997. The first use of the emergency spillway due to flooding started on June 1, 2011, at 8:00am. Hydropower turbines at Garrison Dam have an electric power generating nameplate capacity of 583.3 MW . Average production of 257 MW serves several hundred thousand customers. The Garrison Dam National Fish Hatchery
1500-510: The Three Affiliated Tribes , and the territory "had been their home for perhaps more than a millennium". Threatened by confiscation under eminent domain , the tribes protested. A complete block of Garrison Dam power was denied because it would violate the 1935 Rural Electrification Act . The tribes gained remuneration, but lost 94% of their agricultural land in 1947, when they were forced to accept $ 5,105,625. This amount
1560-491: The Three Affiliated Tribes . Garrison Dam is located between Riverdale and Pick City , and named after the town of Garrison , directly north of the dam, across the reservoir. The dam is approximately midway between Bismarck and Minot , about 10 miles (16 km) west of U.S. Highway 83 . The dam was part of a flood control and hydroelectric power generation project named the Pick-Sloan Project along
1620-489: The blue walleye , which is a color morph that was once found in the southern Ontario and Quebec regions, but is now presumed extinct. However, recent genetic analysis of a preserved (frozen) 'blue walleye' sample suggests that the blue and yellow walleye were simply phenotypes within the same species and do not merit separate taxonomic classification. In parts of its range in English-speaking Canada,
1680-550: The fishing tournament circuit promoted the fish and operated walleye fishing contests in the state. The walleye is the official provincial fish of Manitoba . Winnipeg , Manitoba, considers the walleye (referred to locally as "pickerel") its most important local fish. Icelandic fishermen in Lake Winnipeg traditionally supplied the Winnipeg market. The walleye is also the provincial fish of Saskatchewan , which declared
1740-556: The Canadian waters of the Great Lakes , and fried walleye is considered a staple of Canadian cuisine . In Minnesota , the walleye is often fished for in the late afternoon on windy days (known as a "walleye chop") or at night. Often served as a sandwich in Minnesota's pubs where the fish is very popular, deep fried walleye on a stick is a Minnesota State Fair food. Because walleyes are popular with anglers, fishing for walleyes
1800-488: The authors have inspected the original material; a . that they take on the responsibility for the act of synonymizing the taxa. The accurate use of scientific names, including synonyms, is crucial in biomedical and pharmacological research involving plants. Failure to use correct botanical nomenclature can lead to ambiguity, hinder reproducibility of results, and potentially cause errors in medicine. Best practices for publication suggest that researchers should provide
1860-419: The beginning of § Zoology . The two are related, with only one word difference between their names.) For example, the scientific name of the red imported fire ant , Solenopsis invicta was published by Buren in 1972, who did not know that this species was first named Solenopsis saevissima wagneri by Santschi in 1916; as there were thousands of publications using the name invicta before anyone discovered
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1920-421: The correct name is included among synonyms, although as first among equals it is the "senior synonym": Scientific papers may include lists of taxa, synonymizing existing taxa and (in some cases) listing references to them. The status of a synonym may be indicated by symbols, as for instance in a system proposed for use in paleontology by Rudolf Richter. In that system a v before the year would indicate that
1980-649: The currently accepted binomial with author citation, relevant synonyms, and the accepted family name according to the Angiosperm Phylogeny Group III classification. This practice ensures clear communication, allows proper linking of research to existing literature, and provides insight into phylogenetic relationships that may be relevant to shared chemical constituents or physiological effects. Online databases now make it easy for researchers to access correct nomenclature and synonymy information for plant species. The traditional concept of synonymy
2040-552: The dam is the fifth-largest earthen dam in the world. The reservoir impounded by the dam is Lake Sakakawea , which extends to Williston and the confluence with the Yellowstone River , near the Montana border. The dam and resulting reservoir inundated approximately one-sixth (16.6%) to one-fourth (25%) of Fort Berthold Indian Reservation 's land, resulting in the loss of homes, farmland, and community infrastructure for
2100-403: The form Invariably, b is close to 3.0 for all species, and c is a constant that varies among species. For walleye, b = 3.180 and c = 0.000228 (with units in inches and pounds) or b = 3.180 and c = 0.000005337 (with units in cm and kg). This relationship suggests a 50 cm (20 in) walleye will weigh about 1.5 kg (3.3 lb), while
2160-401: The junior synonym. (Incidentally, this species has since been reclassified and currently resides in the genus Bubo , as Bubo scandiacus ). One basic principle of zoological nomenclature is that the earliest correctly published (and thus available ) name, the senior synonym, by default takes precedence in naming rights and therefore, unless other restrictions interfere, must be used for
2220-503: The maximum recorded age is 29 years. In heavily fished populations, however, few walleye older than five or six years of age are encountered. In North America, where they are highly prized, their typical size when caught is on the order of 30 to 50 cm (12 to 20 in), substantially below their potential size. As walleye grow longer, they increase in weight. The relationship between total length ( L ) and total weight ( W ) for nearly all species of fish can be expressed by an equation of
2280-470: The murkier, higher oxygenated water at around six feet deep. On calm spring days, walleyes are more often located at the deep side of the shoreline drop-off and around shore slopes around or deeper than 10 feet. As a result of their widespread presence in Canada and the northern United States, walleyes are frequently caught while ice fishing , a popular winter pastime throughout those regions. "Walleye chop"
2340-485: The official "state warm water fish" of Vermont in 2012. (Vermont's official "state cold water fish" is the brook trout , Salvelinus fontinalis .) South Dakota designated the walleye as its official state fish in 1982. Although the fish is native to South Dakota, living in Missouri River reservoirs and eastern glacial lakes of the state, it only became a popular food in South Dakota in the 1970s and 1980s, when
2400-527: The peoples. It created new divisions among the segments on the reservation Construction on the $ 300-million dam project began in 1947, and its embankment was enclosed in April 1953. The dam was dedicated by President Eisenhower two months later. The Corps of Engineers completed earthwork in the fall of 1954. Garrison Dam is one of six Missouri River Main stem dams operated by the U.S. Army Corps of Engineers, Omaha District . The dam upstream of Garrison Dam
2460-562: The reflective tapetum lucidum which, in addition to allowing the fish to see well in low-light conditions, gives its eyes an opaque appearance. Their vision affects their behavior. They avoid bright light and feed in low light on fish that cannot see as well as they do. Many anglers look for walleyes at night since this is when major feeding efforts occur. The fish's eyes also allow them to see well in turbid waters (stained or rough, breaking waters), which gives them an advantage over their prey. Thus, walleye anglers commonly look for locations where
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2520-519: The reservoir area. About 1,700 residents were forcibly relocated, some to New Town, North Dakota at the northern end of the reservation. Thus construction of Garrison Dam almost totally destroyed the traditional way of life for the Three Affiliated Tribes and made them much more dependent on the federal government. In addition, the size the lake, and the lack of bridges to cross it for decades, disrupted traditional relations among
2580-575: The river, after the two plan developers, Col. Lewis A. Pick and William Glenn Sloan . Local communities in the area had resisted having the dam built at other locations on the river where they would be affected. In order to construct the dam, the US government needed to purchase 152,360 acres (616.6 km ) of bottomlands in the Fort Berthold Reservation that would be flooded by the creation of Lake Sakakawea. These lands were owned by
2640-536: The rules of nomenclature; as for example when an older name is (re)discovered which has priority over the current name. Speaking in general, name changes for nomenclatural reasons have become less frequent over time as the rules of nomenclature allow for names to be conserved, so as to promote stability of scientific names. In zoological nomenclature, codified in the International Code of Zoological Nomenclature , synonyms are different scientific names of
2700-408: The same taxonomic rank that pertain to that same taxon . For example, a particular species could, over time, have had two or more species-rank names published for it, while the same is applicable at higher ranks such as genera, families, orders, etc. In each case, the earliest published name is called the senior synonym , while the later name is the junior synonym . In the case where two names for
2760-409: The same rank with the same type specimen , genus-group taxa of the same rank with the same type species or if their type species are themselves objective synonyms, of family-group taxa with the same type genus, etc. In the case of subjective synonyms , there is no such shared type, so the synonymy is open to taxonomic judgement, meaning that there is room for debate: one researcher might consider
2820-534: The same species, but this name had never been used after 1899 and was fixed as a nomen oblitum under this rule by Falkner et al. 2002. Such a reversal of precedence is also possible if the senior synonym was established after 1900, but only if the International Commission on Zoological Nomenclature (ICZN) approves an application. (Here the C in ICZN stands for Commission, not Code as it does at
2880-407: The same taxon have been published simultaneously, the valid name is selected accorded to the principle of the first reviser such that, for example, of the names Strix scandiaca and Strix noctua (Aves), both published by Linnaeus in the same work at the same date for the taxon now determined to be the snowy owl , the epithet scandiaca has been selected as the valid name, with noctua becoming
2940-631: The species its official fish in 2015 after it won a fish emblem contest. Walleye is the most popular fish for sport fishing in Saskatchewan, and can be caught in many rivers, reservoirs, and lakes. The International Underwater Spearfishing Association record for largest spearfishing -caught walleye is held by a 13.3-pound walleye caught in 2014 on the South Saskatchewan River north of Lake Diefenbaker . Synonym (taxonomy) Unlike synonyms in other contexts, in taxonomy
3000-495: The species' range, male walleyes mature sexually between three and four years of age. Females normally mature about a year later. Adults migrate to tributary streams in late winter or early spring to lay eggs over gravel and rock, although open-water reef or shoal-spawning strains are seen, as well. Some populations are known to spawn on sand or vegetation. Spawning occurs at water temperatures of 6 to 10 °C (43 to 50 °F). A large female can lay up to 500,000 eggs, and no care
3060-493: The strict definitions of the term "synonym" in the formal rules of nomenclature which govern scientific names (see below) . Changes of scientific name have two causes: they may be taxonomic or nomenclatural. A name change may be caused by changes in the circumscription, position or rank of a taxon, representing a change in taxonomic, scientific insight (as would be the case for the fruit fly, mentioned above). A name change may be due to purely nomenclatural reasons, that is, based on
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#17327806893413120-401: The synonymy, the ICZN, in 2001, ruled that invicta would be given precedence over wagneri . To qualify as a synonym in zoology, a name must be properly published in accordance with the rules. Manuscript names and names that were mentioned without any description ( nomina nuda ) are not considered as synonyms in zoological nomenclature. In botanical nomenclature , a synonym is a name that
3180-406: The taxon. However, junior synonyms are still important to document, because if the earliest name cannot be used (for example, because the same spelling had previously been used for a name established for another taxon), then the next available junior synonym must be used for the taxon. For other purposes, if a researcher is interested in consulting or compiling all currently known information regarding
3240-479: The two (or more) types to refer to one and the same taxon, another might consider them to belong to different taxa. For example, John Edward Gray published the name Antilocapra anteflexa in 1855 for a species of pronghorn , based on a pair of horns. However, it is now commonly accepted that his specimen was an unusual individual of the species Antilocapra americana published by George Ord in 1815. Ord's name thus takes precedence, with Antilocapra anteflexa being
3300-579: The two dorsals and the caudal fin of the sauger are marked with distinctive rows of black dots which are absent from or indistinct on the same fins of walleyes. Walleyes grow to about 80 cm (31 in) in length, and weigh up to about 9 kg (20 lb). The maximum recorded size for the fish is 107 cm (42 in) in length and 13 kilograms (29 lb) in weight. The rate depends partly on where in their range they occur, with southern populations often growing faster and larger. In general, females grow larger than males. Walleyes may live for decades;
3360-493: The walleye is known as a pickerel , though the fish is not related to the true pickerels , which are members of the family Esocidae . It is also sometimes called a dory in British English (and its common name in French is the similar doré —meaning golden or gilded ), although this name is also used for various other species . Walleyes show a fair amount of variation across watersheds. In general, fish within
3420-456: The water column is disrupted. Although anglers interpret this as light avoidance, it is merely an expression of the walleyes' competitive advantage over their prey under those conditions. Similarly, in darkly stained or turbid waters, walleyes tend to feed throughout the day. In the spring and fall, walleyes are located near the shallower areas due to the spawning grounds, and they are most often located in shallower areas during higher winds due to
3480-545: Was established for a group of terrestrial snails containing as its type species the Burgundy or Roman snail Helix pomatia —since Helix pomatia was already the type species for the genus Helix Linnaeus, 1758, the genus Pomatia was an objective synonym (and useless). On the same occasion, Helix is also a synonym of Pomatia , but it is older and so it has precedence. At the species level, subjective synonyms are common because of an unexpectedly large range of variation in
3540-548: Was first formally described by the American naturalist Samuel Latham Mitchill (1764–1831) with the type locality given as Cayuga Lake near Ithaca, New York . The walleye is considered to be a quite palatable freshwater fish, and consequently, is fished recreationally and commercially for food. Because of its nocturnal feeding habits, it is most easily caught at night using live minnows or lures that mimic small fish. Most commercial fisheries for walleye are situated in
3600-465: Was increased to $ 7.5 million in 1949, but it did not fully compensate them for the loss of their important farmlands, homes, towns, and graves. They had cultivated the bottomlands and were able to be largely self-sufficient. The final settlement legislation denied the tribes' right to use the reservoir shoreline for traditional grazing, hunting, fishing or other purposes, including irrigation development and royalty rights on all subsurface minerals within
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