silurus glanis territorio

The breed effect on productivity and meat nutrient compsition of fish. Gillnet selectivity and its relationship with body shape for 8 freshwater species. (2002), S. glanis has been farmed historically in Austria, Bulgaria, Croatia, Germany, France, Hungary, Greece, Macedonia, Poland, the Czech Republic and Romania. The male guards the eggs for the next 2-10 days (time dependent on water temperature) and makes sure the eggs are well ventilated by repeatedly fanning his tail fin, until they hatch out (Copp et al., 2009). Fish stock assessment of Lake Schulen, Flanders: a comparison between 1988 and 1999. la nocività, la diffusione attuale e potenziale della specie, tutto il territorio lombardo a sud delle Alpi è da ritenersi area interessata dagli impatti menzionati. CABI is a registered EU trademark. The aim of control management plans in fisheries in reference to non-natives is to develop a framework to assess the risk in relation to priority and action. Genetic structure and phylogeography of European catfish (Silurus glanis) populations. Head is broad and flat. Le Mamme del Chiese si costituiscono ufficialmente in “comitato” Territorio. 2001). 2003Gullu et al. Aquaculture - a gateway for exotic species. Species and size selectivity of European cat-fish (Silurus glanis) to natural food when reared in aquarium to one month of age. Water and Environment Journal, 20(4):233-239. The eggs are large, about 1-3 mm in diameter (Copp et al., 2009). Science (Washington), 294(5547):1655-1656, Paschos, I., Nathanailides, C., Perdikaris, C., Tsoumani, M., 2004. Colossal aggregations of giant alien freshwater fish as a potential biogeochemical hotspot. Consumption of food sources is related to gape size with the larger catfish >120 cm in length consuming aquatic wildfowl and mammals in comparison to smaller counterparts of <30 cm feeding on invertebrates and molluscs. Data source for updated system data added to species habitat list. doi: 10.1371/journal.pone.0025732, Britton JR, Cucherousset J, Davies GD, Godard MJ, Copp GH, 2010. The different routes of introduction are pertinent regarding release of non-native fish, as some routes such as angling have a greater risk of unregulated transfer activities from fishermen in unsupervised lakes. Establishment success in France has been restricted by cold winter temperatures of <10ºC (David, 2006). Upstream spring migration in April for spawning requires temperatures of 8-10ºC and initiation of spawning occurs at 18-22ºC. Also the caudal fin is little developped. Some example maps demonstrate the extent of introductions. 2002; Ulikowski et al. PLoS ONE, 6(10), e25732. Development of technological regimes of European catfish (Silurus glanis L.) growing in the ponds of Belarus. It swims slowly, waving the long anal fin that garnishes its body from the abdomen to the tail, but is able to make sudden leaps when disturbed by an annoying diver or if it must seize a prey. Biological Invasions, 12(1), 125-131. doi: 10.1007/s10530-009-9436-1, Carol J, Benejam L, Benito J, Garcia-Berthou E, 2009. > 10°C, Cold average temp. FishBase. Invasività del siluro (Silurus glanis) e programmi gestionali Il siluro (Silurus glanis L.) è un pesce appartenente all’ordine dei Siluriformes originario dei bacini fluviali del mar Nero, Caspio e Baltico. Copp et al. Ai tecnici specializzati della società consulente il Parco affiancherà il proprio personale di vigilanza per il coordinamento e ai fini dell’acquisizione delle competenze tecniche e del Species. Cornol, Switzerland: Publications Kottelat, 646 pp, Krieg F, Estoup A, Triantafyllidis A, Guyomard R, 1999. They have a tiny dorsal fin made up of a single spine and 4-5 dorsal soft rays, one anal spine, 83-95 soft anal rays and a caudal fin of 17 soft rays (Froese and Pauly, 2012). A review of the environmental biology of European catfish Silurus glanis in its native and introduced ranges. In rosso e blu, i territori originari; in arancione, le zone dove è stato introdotto. It was first introduced to England in 1880, into enclosed recreational lakes of a private Bedfordshire manor estate at Woburn Abbey, for fishing. S. glanis has a broad omnivorous diet, including invertebrates and vertebrates such as small rodents. pond cultivation. Aquacultura Hungarica, 4: 135-144. Fast growth is advantageous for non-natives in minimising predation by quickly exceeding gape size of native predators, and in increasing foraging opportunities (Hendry et al. Diel rhythms of feeding activity in the European catfish, Silurus glanis. Presence of Silurus glanis Linnaeus, 1758, in the Volturno Basin. The pale abdomen is the surprises zone: rarely deflated, it often shows protrusions that speak volumes about the appetite of the fish. Pisciculture Francaise, No. > 0°C, wet all year, Cs - Warm temperate climate with dry summer, Warm average temp. ropa (Silurus glanis)” del 17 luglio 2007 stabilisce l’asso-luto divieto di detenzione e trasporto di esemplari vivi e di reimmissione nelle acque della provincia. V.V., 1983). They are a demersal species, find refuge in crevices and woody root habitats, and prefer slow flowing rivers and weedy covered, vegetated lakes. Alp A, Kara C, Buyukcapar HM, 2004. Aquatic Living Resources, 15:139-144, Marcel J, 1980. (2009) present a table of at least 55 fish species found in the natural diet of S. glanis. Archiwum Rybactwa Polskiego, 6(1), 97-106. Since 1975, it has been farmed for its meat in pond cultures in Italy and former Yugoslavia, and also in its native range in Hungary, Poland, Slovakia and Lithuania (and also Belarus -- Dokuchayeva, 2011), where the species is considered an expensive meat delicacy. August 2011. Comparison of morphology, growth and survival between Silurus glanis, S. aristotelis and their hybrid during larval and juvenile stages. The species is an effective ambush predator of slower moving Cyprinid species (Copp et al., 2009). The colour is dark grey on the back and goes down on the sides with a moire where clear and dark colours mix irregularly, to end in an opaque white belly. River Ebro, Spain. Journal of Fish Biology, 71:101-114, Syväranta, J., Cucherousset, J., Kopp, D., Crivelli, A., Céréghino, R., Santoul, F., 2009. Fisheries Management and Ecology, 14:263-268, Britton, J. R., Davies, G. D., Brazier, M., 2010. Bogut, I., Opacak, A., Stevic, I., Bogdanic, C., 1995. Silurus glanis. In: De Pauw, N., Jaspers, E., Ackefors, H., Wilkins, N, eds. Identification of non-native freshwater fishes established in Europe and assessment of their potential threats to the biological diversity. Average temp. Enormous mouth, fleshy lips and powerful jaws with tiny teeth that do not forgive the sucked prey. (2002), S. glanis has been farmed historically in Austria, Bulgaria, Croatia, Germany, France, Hungary, Greece, Macedonia, Poland, the Czech Republic and Romania. Rehabilitación de dique salinero como territorio de reproducción de los flamencos. Concerns about accidental unregulated spread (flooding enabling spread from angling waters to watercourses and rivers) and intentional unregulated releases (for angling) imply that S. glanis introductions need to be investigated, particularly as angling and dispersal are cited as the main introduction routes for introduced fish in the UK ( Copp et al. However, there are reports of breeding in some lakes in southern England at present temperatures (Copp et al., 2009). A dart, a cloud of dust and also this is seized with no escape. Aquaculture: a biotechnology in progress: volume 1. International Conference: Aquaculture Europe, Amsterdam, Netherlands, 2-5 Jun 1987. Another reason for introductions is as a biocontrol agent for controlling cyprinid fish. → To appreciate the biodiversity within the Osteichthyes, the BONY FISH, and find other species, please click here. Grozev, D., Hubenova-Siderova, T., Zaikov, A., 2000. Silurus glanis (Linnaeus, 1758) Appearance. Studies on wels catfish (Silurus glanis) development during cold season as an auxiliary species in sturgeon recirculated aquaculture systems. Aquatic Conservation: Marine and Freshwater Ecosystems, 21(3):276-281., Mazurkiewicz, J., Przybyl, A., Golski, J., 2008. The wels catfish S. glanis is part of the family Siluridae, a group of freshwater fish native to Europe, Asia and Africa. (2003) reported that more than 50% of successful invasive fish species introduced into the UK exhibit parental care, where fish actively protect and guard their eggs or larvae and defend territories. Molecular Ecology, 11:1039-1055. 2011; Martino et al. Spawning is nocturnal. Elvira B, 2001. – Contenimento della presenza di Silurus glanis nelle acque dell’Adda ricomprese nel territorio del Parco Adda Nord e, nel comtempo, contenimento di altre specie ittiche alloctone dannose per l’equilibrio delle specie autoctone (come il gardon, il rodeo amaro, il carassio). (2001), aquaculture is the foremost transfer route of exotic fish species globally, which reflects the growth in aquaculture caused by the increasing demand for fish consumption which cannot be provided by wild fish capture alone. 2009; Copp et al. Mareš, J., Wognarová, S., Spurný, P., 2003. They can also use holes or burrows of clay and muddy bottom substrate of lakes and ponds and are often hidden among dense macrophyte cover. Foraging is an important aspect of growth and Muscalu et al. Status Review Report of 5 Species of Foreign Sturgeon. Nel suo areale originario la specie presenta numerosi problemi di conservazione, specialmente legati al suo limite di diffusione, per via In the UK, wels catfish, because they are non-native, require an ILFA (Introduction of Live Fish Act) license for introduction as part of regulatory legislation control and enforcement. 60:21-36. Its greater production in Bulgaria has been suggested (Hadjinikolova et al., 2010). Bredene, Belgium: European Aquaculture Society, 163-167. ], Copp GH, Moffatt L, Wesley KJ, 2007. (La production de poissons en pisciculture en Roumanie.) Diet varies with age and size, with smaller catfish foraging on invertebrates, while larger catfish >120 cm are able to exploit a broader niche, including fish and wildfowl. Some angling introductions are unregulated and illegal, with S. glanis transferred to unlicensed lakes in the UK that do not meet the ILFA (Import of Live Fish Act) criteria set by the Environment Agency because of risks concerning flooding and the likelihood of entry to nearby rivers. Fundamental and Applied Limnology, 174:317-328, Carol J, Garcia-Berthou E, 2007. Gozlan et al. Martino A, Syväranta J, Crivelli A, Cereghino R, Santoul F, 2011. GardaPost Gen 11, 2020. Moreover, the flesh is good even if, due to the pollution, before eating it would be better to contact the veterinary authorities. [ISBN 90-71625-03-6], Hilge, V, 1984. Females deposit eggs at 30,000 per kg of body weight. 2007; Carol et al. The newborns will remain in the nest till when they have not competely absorbes the yolk sac and will reach the sexual maturity in 2-3 years. This one has spotted a perch that most probably will meet a bad death © Sebastiano Guido. Dietary breadth and trophic position of introduced European catfish Silurus glanis in the River Tarn (Garonne River basin), southwest France. Is European catfish a threat to eels in southern France? Bulgarian Journal of Agricultural Science, 16(3), 398-405., Hamackova J, Szlaminska M, Kouril M, Vachta J, Stibranyiova I, 1997. “Silurus glanis is a commercial fish consumed by humans. BioScience, 50(3):239-244, Shikhshabekov MM, 1978. > 10°C, Cold average temp. Of presumable Danubian origin, this fish has diffused in almost all European rivers and lakes, often introduced by the man, as well as in the Caspian and Lake Aral basins, colonizing also the Anatolia, the southern part of the Baltic countries, and even areas of Great Britain and of Spain. © MONACO NATURE ENCYCLOPEDIA | All rights reserved. (2009) say that it is most common in the River Ebro, Spain, in the 130 km between its point of introduction in 1974 and the Ebro delta, and suggest that natural dispersal is likely to be slow and density dependent. S. glanis is a robust species regarding transference outside its native range, and exhibits tolerance to low oxygen levels in water. Krmiva, 37(3), 129-134. Native to eastern Europe and western Asia it is now established in several countries to the west and south of its native range. 2008; Muscalu et al. The catfishes spend the day in impenetrable hideouts and get out hunting by night; amphibians and young fishes but then also small mammals and aquatic birds © G. Mazza. River Thames, River Great Ouse, where its presence is yet to be proved (Copp et al., 2007). Natural predators of S. glanis include otters (Lutra lutra), cormorants and waders, and other predatory fish such as pike (Esox lucius) and zander (Sander lucioperca). 2009; Syväranta et al. When the water exceeds the 20 °C, the males dig small basins that will cover with weeds and twigs where the spawning will take place. La gestione del siluro ai fini del suo contenimento nel territorio regionale potrebbe comprendere: 1) la rimozione periodica di … Although the genetic structure and phylogeography have been studied in its native range, there is little information known about the genetic characteristics of S. glanis in its introduced range (Copp et al., 2009). Each gram of ova has about 195 eggs prior to spawning. Pairing up of males and females commences during migration as they proceed to compete for best spawning grounds in the reach of the river and in heavily vegetated lakes. Výzkumný Ústav Rybárský a Hydrobiologický Vodnany, 29:3-9. There is potential for dispersal during hydrological events (Slavik et al., 2007). Hendry, A. P., Wenburg, J. K., Bentzen, P., Volk, E. C., Quinn, T. P., 2000. Establishment may be more sporadic in northern countries such as Belgium and the UK where temperatures are less favourable (Elvira, 2001; Britton and Pegg, 2007). Zhivotnov'dni Nauki, 37(5/6), 14-18. Sexual maturity is generally 3-4 yrs, between 39-71 cm length. The database includes records of species introduced or transferred from one country to another. A model of isolation by distance seems more probable and a hypothesis of recent dispersion from only one glacial refugium around the Ponto-Caspian region is proposed. Rearing of European catfish (Silurus glanis L.) to marketable size in warm water at the laboratory scale. Due to the variable regulations around (de)registration of pesticides, your national list of registered pesticides or relevant authority should be consulted to determine which products are legally allowed for use in your country when considering chemical control. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. 1996; Ulikowski et al. Linolenic acid supplementation in the diet of European catfish (Silurus glanis): effect on growth and fatty acid composition. The species sometimes enters brackish water in the Black Sea and Baltic Sea (Froese and Pauly, 2012). Foto AdobeStock | Fyle. A potential beneficial ecological effect is that S. glanis can predate on signal crayfish (Pacifastacus leniusculus), which is an invasive species in Europe that is adversely effecting native crayfish populations (Carol et al., 2009; Copp et al., 2009). Is European catfish (Siluris glanis) really becoming abundant in the River Thames? Se il Giacinto d’acqua è il simbolo vegetale dell’invasione aliena, non sono da meno le numerose specie animali che troviamo nei nostri corsi d’acqua. On the outer sides of the chin two more couples of barbels complete the range of the sensors. Information on specific control measures for S. glanis is limited. The anal fin accompanying more than a half of the length of the fish acts as an imaginary blade to the long and tapered “knife” of the body. (Ucinkovitost dodatka polizyma na rast somovskog mlada (Silurus glanis) u kaveznom uzgoju). The European catfish (Silurus glanis) can reach the 80 years with record size of 5 m and 300 kg. Silurus is a genus of catfishes native to Europe and Asia.. Wels catfish are carriers of viral pathogens, namely spring viraemia of carp (SVC) and European sheatfish virus (ESV), which may adversely impact native fish including salmonids and amphibians. Reviews in Fish Biology and Fisheries, 21(2), 283-294. doi: 10.1007/s11160-010-9168-4, Bevacqua D, Andrello M, Melià P, Vincenzi S, Leo GA de, Crivelli AJ, 2011. Reproductive success in male sunbleak, a recent invasive fish species in the UK. The addition of wels catfish in recreational catch and release fisheries is likely to have a beneficial revenue effect. Combattimento mozzafiato in deriva sul fiume Po. El siluro (Silurus glanis) es una especie originaria del centro y del este de Europa, que fue introducida en España en 1974 en el embalse zaragozano de Mequinen- za. Aquatic Biology, 8(2), 137-144., Syväranta, J., Cucherousset, J., Kopp, D., Martino, A., Céréghino, R., Santoul, F., 2009. 2009Bevacqua et al. Proceedings of the National Academy of Sciences of Belarus., Agrarian Science Series: 2:75-86. When several references are cited, they may give conflicting information on the status. However it still accounts for only a small percentage of European freshwater aquaculture compared with the main species, rainbow trout (Oncorhynchus mykiss), brown trout (Salmo trutta) and common carp (Cyprinus carpio) -- total production of S. glanis was 602 tonnes in 1993, increasing to 2000 tonnes in 2002, and has since stabilised at >700 tonnes/year. Studies on the growth of sheatfish (Silurus glanis L.) in river Tisza. Copp G H, Britton J R, Cucherousset J, García-Berthou E, Kirk R, Peeler E, Stakėnas S, 2009. National Marine Fisheries Service, 1998; Zaykov and Hubenova-Siderova, 1998; Prokés et al., 1999; Grozev et al., 2000; Bogut et al., 2002; Paschos et al., 2004; Kim et al., 2005; Dediu et al., 2010; Alp et al., 2011; Jamróz et al., 2008; Muscalu et al., 2010), and on food conversion of cultured S. glanis (particularly using meal pellets), e.g. In the UK, the government has developed an environmental risk strategy including risk identification, risk assessment, risk management and risk review and reporting. S. glanis is the largest-bodied European freshwater fish. Overall, the tipping point temperature indicator for growth among cultured S. glanis appeared to be >20ºC and at these temperatures fish can gain ~ 4kg within 2yrs, in contrast to depressed growth at lower temperatures (Gullu et al. Age and growth of the European catfish (Silurus glanis) in a Turkish Reservoir and comparison with introduced populations. 2010), and spawning behaviour was also temperature sensitive -- spawning was delayed for months until water temperatures were within the 18-23ºC range (Wiśniewolski, 1989; Copp et al. However the species still accounts for only a small percentage of European freshwater aquaculture. The larvae live in the nest until the yolk sac is absorbed. The Silurus glanis lives in all the waterstreams with lmoderate currents and in artificial laks and canals, preferring not too deep seabeds, rich of rifts or of other types of shelters, where it spends the days in semi lethargic state. S. glanis exhibits cannibalism when food resources are scarce, or (Copp et al., 2009) in angling waters when there is variation in size among members of the species. 2001). Age at maturity is 3-4 yrs. Archives of Polish Fisheries, 11:141-147, David JA, 2006. S. glanis is also used in parts of Europe for aquaculture. It has been in­tro­duced to sev­eral other areas in­clud­ing Ger­many, France, Spain, Eng­land, Greece, Turkey and the Nether­lands. S. glanis is in the lower range of the high risk score of FISK, although these scores are variable and likely to change in relation to the context of environmental factors affecting risk (Copp et al., 2005). S. glanis is a warm water predatory fish with fast growth rate (Cirkovic, 2012); cultured fish can attain a mean length increment of >15cm TL within 4 months at optimum temperatures >26ºC (Hilge, 1989). Contribution of anadromous fish to the diet of European catfish in a large river system. Larval and juvenile stages of introduced fish are most susceptible to predation due to small size (Gozlan et al. Information regarding the wels catfish nuclear and mitochondrial genomes is sparse. A “do nothing” approach is advocated in low risk situations, whereas removal or containment are considered options in higher risk situations. Aquaculture of this species is constrained by water temperatures <10ºC during winter months in some regions of Europe including France. Maximum length is 500 cm (male), but common lengths are 300 cm, and weight 306 kg. Weight and linear growth of wels (Silurus glanis L.) up to one month of age in aquarium rearing. Secondly, catfish are opportunistic foragers, able to switch their feeding to the most suitable resource available. 129. During the night it roams wandering and diving the big head on the preys that the long barbels, always busy, have revealed. Public Domain - Released by Yuriy75/via wikipedia - CC0. Journal of Applied Icthyology, 1:27-31, Jamróz, M., Kucharczyk, D., Kujawa, R., Mamcarz, A., 2008. Technological research for artificial reproduction, population genetics and conservation problems have been developed over the past 10 years in the Czech Republic, France and other European countries. There are reports of escapes from aquaculture and recreational fisheries, for example in France where it escaped into the River Doubs in about 1890 (Valadou, 2007). S. glanis was introduced to the UK and western Europe in the nineteenth century. Copepoda are the most frequent food of smaller larvae., FAO, 2012. > 0°C, dry winters), CR (IUCN red list: Critically endangered), Competition - monopolizing resources; Predation, CR (IUCN red list: Critically endangered); USA ESA listing as endangered species, DIAS, Database on Introductions of Aquatic Species. It is the largest-bodied European freshwater fish (Copp et al., 2009). It is estimated that the number of eggs is of around 30.000 per each kilo of weight of the mother. Following spawning, S. glanis exhibits a guarders and nesters reproductive strategy with the male protecting the cluster of eggs laid by the female in his nest excavated amongst the substratum and made from plant material. The skin is smooth, has no scales and is covered by slippery mucus. Rome, Italy: Food and Agriculture Organization of the United Nations. 2012). Ovaries are in caudal posterior cavity in females, on maturity they expand into abdominal cavity, and are small in size. This fish has boneless white flesh that is low in fat and highly palatable. Bonjour à tous ! Habitat use follows a daily pattern, and incorporates territorial behaviour. Inhabits large and medium size lowland rivers, backwaters and well vegetated lakes (Ref. (2009) indicated a narrower range between 25 and 28ºC. Copp et al. Territorio. The routes used to introduce non-native fish species are closely related to the nature and extent of different anthropogenic activities such as aquaculture, research, pest control and also recreational fishing. More information about modern web browsers can be found at Reviewers' names are available on request. Risk identification and assessment of non-native freshwater fishes: concepts and perspectives on protocols for the UK. The name of the genus comes from the Latin “silurus” that means torpedo indicating the big freshwater fish.

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