Western tubenose goby | |
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P. semilunaris from the Baraboy River, southern Ukraine | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Gobiiformes |
Family: | Gobiidae |
Genus: | Proterorhinus |
Species: | P. semilunaris |
Binomial name | |
Proterorhinus semilunaris (Heckel, 1837) | |
The range of the western tubenose goby. Initial introduction in North America shown, see the map below for further spread. | |
Synonyms | |
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The western tubenose goby (Proterorhinus semilunaris) is a species of goby native to fresh waters of the Black Sea and Aegean Sea basins. [2] It has recently spread as an invasive species to Central and Western Europe and to North America. Previously Proterorhinus semilunaris was considered as a junior synonym of Proterorhinus marmoratus , but was confirmed as a distinct species based on molecular analysis. [3]
The species average size is 12.7 centimeters. The body and head is flattened laterally. It has 37–46 large, cycloid scales. Its jaws are equal by length. It has an abdominal sucker without explicit blades. It has no swim bladder. The head's width is usually less than its height. Crown, nape, upper edges of operculums, origins of pectoral fins, belly, and posterior part of throat are covered with cycloid scales. Body color is brown to yellowish-gray with 4–5 dark streaks on back, transforming to spots below the middle of the body. Its fins are typically striped. It reaches 12 centimeters (4.7 in). It differs from the closely related marine tubenose goby P. marmoratus by the head length, which constitutes 28–32% of the fish's standard length. [4] The posterior membrane of first dorsal fin reaches the origin of the second dorsal fin. Arterior naris reaches the upper lip or uppermost margin of the lower lip. Eye diameter is 16–21% of head length.
The tubenose gobies have a cylindrical body with a flattened ventral surface. The mouth is wide and slightly subterminal mouth with large lips and no barbels. The first dorsal fin has 7 or 8 spines. The caudal fin is rounded and has a triangular black spot at its base. The ventral fins are fused into a single suction cup shape. [5] The scales are small and cover the top of the head, behind the eyes, and along the midline. The back and sides have broad, oblique blochtes on a lighter brown or olive background. The bottom of the fish is cream to white in color. [6] This species lacks scales on its lateral line. The rows above the lateral line have 45 to 48 scales. The tubenose goby is flattened on the ventral surface. [7]
The nostril tubes, from which these gobies get their name, distinguish the tubenose goby from the round goby. The western tubenose goby have tubular nostrils and its nostril tube extends to the upper lip. The tubular nostril is 2–4 centimeters long. The round goby lacks these nostril tubes. It can also be distinguished by its long anterior nostrils and lack of a black spot on the posterior base of its dorsal fin. [8]
The species is native to the fresh waters of the Black Sea basin and the Maritza and Struma rivers draining the Aegean Sea. [9] [10] It inhabits the Danube River from the delta to the mouth Morava and in the Danube Lakes, from Prut to Iași. In Bulgaria, it lives in the Kamchiya, Ropotamo, Veleka, and Rezovska rivers. It inhabits the basins of the Dniester and Southern Bug rivers. In the Dnieper river the natural range is from the estuary to Trubizh River. In the basin of the Sea of Azov it lives in the rivers Don, Seversky Donets (to Sviatohirsk), in the estuary of the Kuban River. It also inhabits Lake Neusiedler.
In Eurasia it is mentioned as non-indigenous in the upper streams of the Danube river, [11] [12] [13] the Dnieper river, [14] [15] the Rhine-Main system (North Sea basin), [16] [17] [18] [19] and the Vistula. [20] During the period of 2008–2010, this species was registered in the Meuse River on the border between Belgium and Netherlands. [21]
Proterorhinus semilunaris was introduced to the St. Clair River from eastern Europe in Ballast water. [22] It is possible that it spread to Canada and the Great Lakes through use of it as live bait. By the early 2000s it had spread north to the Minnesota-Wisconsin border and East to the border of New York and Pennsylvania. [23] [24]
The (western) tubenose goby is considered an invasive species in North America, but in certain Eurasian locations, the native tubenose goby is considered to be endangered. Particularly in Greece the populations are endangered near the town of Serres due to pollution and human-induced habitat change. [25]
Proterorhinus semilunaris inhabit freshwater areas. They live in regions with much plant cover in lakes and rivers. They will inhabit shallow (less than 5 meter depth), slow moving, shore water. They will be found in areas with abundant macrophytes. [26]
Tubenose gobies in the Detroit River are positively associated with complex macrophytes in the fall. They are negatively associated with the macrophytes in the spring and summer. They can withstand extremely low levels of dissolved oxygen. [27]
Tubenose goby will create nests under rocks and logs in shallow water, and defend its nest sites quite aggressively. The preferred nesting areas indicate that they could potentially inhabit the shallow waters of all five Great Lakes. Currently, the species is not spreading rapidly, however, if the species does expand it could be a threat to native species of the Great Lakes. [28]
The species is a benthic omnivore (demersal fish). It consumes a large number of benthic invertebrates, such as Chironomidaes, crustaceans, copepods, and ostracods. Gobies will also eat fish larvae; this can negatively impact the ecosystem of the rivers and lakes that tubenose gobies inhabit. [29]
In the Věstonice Reservoir (Thaya River, the basin of the Morava River) the larvae of Chironomidae, mostly Phytotendipes gripekoveni comprise 40.2% and Asellus aquaticus 27.6% [30] as well as Corixidae, copepods, Ceratopogonidae, Cladocera, and leeches (Hirudinea).
The life span of the female Proterorhinus semilunaris can be up to 5 years. Meanwhile, the males generally do not live as long. The males will guard their nesting sites to defend their eggs and young. [31] Tubenose gobies will nest under logs and rocks in the shallow fresh waters of the Great Lakes and their connecting rivers. The gobies will spawn multiple times during the warmer months of the year which makes the species rather prolific. Currently, the species is not rapidly spreading but the prolific spawning could create a threat to the native species of Rainbow Darters and Northern Madtoms. [32]
Infestation is low in the natural range. In the delta of the Dniester River they have 5 parasite species; trematodes Nicolla skrjabini are most numerous. [33] In the small rivers of the northern coast of the Sea of Azov it has trematodes Plagioporus skrjabini and glochidia of molluscs. [34]
After introduction, the tubenose goby in the Morava River have 13 parasite species; the trematodes, such as Apatemon cobitidis proterorhini, Diplostomum spathaceum, Tylodelphys clavata, were most numerous in the parasite community. [35] In the Great Lakes the introduced tubenose goby was infected with 6 parasite species, but the infestation with every particular species was very low. [36] [37] [38] It is included as paratenic host to the life cycle of the parasite of turtles, the nematode Spiroxys contortus.
The North American tubenose goby has a significant overlap in diet with the rainbow darter, northern madtom, and the logperch, which creates competition with these species in their native habitat. [39]
The western tubenose goby is an invasive species but it has not spread to the extent of the round goby. The tubenose goby has the potential to threaten the natural species of the Great Lakes. Many native predatory fish feed on the tubenose goby which disrupts the native food webs of the Great Lakes [40]
The round goby is a euryhaline bottom-dwelling species of fish of the family Gobiidae. It is native to Central Eurasia, including the Black Sea and the Caspian Sea. Round gobies have established large non-native populations in the Baltic Sea, several major Eurasian rivers, and the North American Great Lakes.
The slimy sculpin is a freshwater species of fish belonging to the family Cottidae, which is the largest sculpin family. They usually inhabit cold rocky streams or lakes across North America, ranging from the Great Lakes, southeast Minnesota, northeast Iowa, southwest Wisconsin and northeast Canada. Slimy sculpins have also been found roaming the cold streams of eastern Siberia. They are commonly confused with their closely related relatives, Mottled sculpin, and with tubenose gobies who are both freshwater fishes as well. The slimy sculpin is a nocturnal fish that usually spends most of its time on the stream bottom and seeks shelter under rocks and logs, especially during spawning season. When it swims, it sometimes appears to be "hopping" along the bottom because of its inefficient ability to swim. This is partly due to the absence of a swim bladder, which normally gives buoyancy to a fish.
The monkey goby is a species of goby native to the basins of the Black Sea and the Sea of Azov.
Neogobius is a genus of goby native to Black Sea and the Caspian Sea basins. It is part of the broader Benthophilinae subfamily which is also endemic to the same region. Nevertheless, two Neogobius species have recently turned out to be highly invasive and spread across Europe and even to the Great Lakes of North America.
The racer goby is a species of goby native to fresh, sometimes brackish, waters, of the Black Sea basin. It is a Ponto-Caspian relict species. The species is placed a monotypic genus, Babka, which was once considered a subgenus of genus Neogobius, but was then elevated to genus-status based on the molecular analysis.
Ponticola kessleri, the bighead goby or Kessler's goby, is a species of goby native to Eurasia. The bighead goby is a Ponto-Caspian relict species. It inhabits the fresh and oligohaline waters, with mineralisation from 0-0.5‰ up to 1.5-3.0‰.
Proterorhinus marmoratus is a species of gobiid fish, a tubenose goby native to the brackish water parts of the Black Sea and the Sea of Azov, near the coasts of Bulgaria, Georgia, Romania, Ukraine and Russia. Also it is found in the Marmora Sea (Turkey). It can reach a length of 11.5 centimetres (4.5 in) TL.
The Chornaya tubenose goby is a species of goby endemic to Crimea, Ukraine where it is only found in a short stretch of River Chornaya. Water is extracted in large quantities for irrigation could cause the stream to completely dry out in summer and thus poses a critical risk of extinction in a near future.
Proterorhinus semipellucidus is a species of gobiid fish, a tubenose goby originally described from the Gharasu River near Gorgan Bay of the Caspian Sea in Iran. Following the systematic decomposition of the tubenose gobies it was suggested to be a more widespread and invasive taxon distributed in the fresh waters of the Caspian Sea basin. It may be the same species as that known as Proterorhinus nasalis.
Proterorhinus is a genus of fishes, known as the tubenose gobies. These gobiid fish are native to Eurasia where they occur in the region of the Caspian and Black seas, inhabiting marine, brackish and fresh waters. The species Proterorhinus semilunaris was introduced to the St. Clair River in Michigan during the late 1990s. Until recently, the genus was considered monotypic, comprising only the tubenose goby. Following molecular and further morphological investigations it has been split into several taxa, with distinct distributions in marine vs. fresh waters and in the Black Sea vs. Caspian Sea basins.
The eastern tubenose goby is a species of gobiid fish native to fresh and brackish waters of the basins of the Sea of Azov and the Caspian Sea and has invaded the upper reaches of the Volga River from its native occurrence in the delta. This species prefers slow flowing rivers or still waters with plentiful rocks or vegetation. It can reach a length of 9 centimetres (3.5 in) SL. It is probably the same species as that recently treated as Proterorhinus semipellucidus.
The Benthophilinae are a subfamily of gobies endemic to the Ponto-Caspian region. The subfamily includes about 50 species. The representatives of the subfamily have fused pelvic fins and elongated dorsal and anal fins. They are distinguished from the closely related subfamily Gobiinae by the absence of a swimbladder in adults and location of the uppermost rays of the pectoral fins within the fin membrane.
True gobies were a subfamily, the Gobiinae, of the goby family Gobiidae, although the 5th edition of the Fishes of the World does not subdivide the Gobiidae into subfamilies. They are found in all oceans and a few rivers and lakes, but most live in warm waters. Altogether, the Gobiinae unite about 1149 described species in 160 genera, and new ones are still being discovered in numbers.
Neogobius pallasi, the Caspian sand goby or the Caspian monkey goby, is a species of fish native to fresh and brackish waters of the Caspian Sea basin including the Volga drainage up to the vicinity of Moscow. It has been introduced into the Aral basin. This species of goby can reach a length of 20 centimetres (7.9 in) SL. It is also important to local commercial fisheries.
The Don tadpole-goby is a species of goby widespread in the basin of the Sea of Azov, specifically in the lower Don River and Tsimlyansk Reservoir. This species is found in rivers, reservoirs and river mouths, but is not known to enter seas. It is introduced and invasive upstream the Volga River, e.g. the Kuibyshev Reservoir. This fish can reach a length of 6.6 centimetres (2.6 in) SL. Life span is about one year.
The fish fauna of the Neretva river basin in the western Balkans is representative of the Dinaric karst region and characterized by several endemic and endangered species.
Cardiocephaloides longicollis is a species of flukes. The life cycle of C. longicollis is asexual as well as complex. Its asexual stage resides in the body of whelks where it replicates many times, and eventually its eggs are dispersed in the water through feces. C.longicollis begin their early life as free swimming miracidia larvae in the water. They go on to infect snails, and a variety of fishes, usually second intermediate host, in the form of a cercariae. While C.longicollis has previously been recorded in 19 fish species, researchers have found 12 other species which are viable hosts for C.longicollis making for a grand total of 31 aquatic species. The final host for this parasite are the gulls that eat the infected fish in which the parasite has formed cysts in.
Papuligobius uniporus is a species of small goby in the subfamily Gobionellinae. It is also the type species of the genus Papuligobius.
Holostephanus cobitidis is a species of parasitic trematode in the family Cyathocotylidae.