Density-dependent and inter-specific interactions affecting European eel settlement in freshwater habitats. datasets have provided data to the NBN Atlas for this species.. Browse the list of datasets and find organisations you can join if you are interested in participating in a survey for species like Silurus glanis … Reproduction is controlled by environmental cues, e.g. This one has spotted a perch that most probably will meet a bad death © Sebastiano Guido. Aquaculture, 243(1/4), 323-329. http://www.sciencedirect.com/science/journal/00448486, Kinzelbach R, 1992. In Spain, wels catfish have become a dominant predatory fish in the Ebro river basins, where establishment is likely to have been aided by the relatively warm water temperatures experienced in the region. Fisheries for non-native species in England: angling or the environment? 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. 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). (2002), S. glanis has been farmed historically in Austria, Bulgaria, Croatia, Germany, France, Hungary, Greece, Macedonia, Poland, the Czech Republic and Romania. Upstream spring migration in April for spawning requires temperatures of 8-10ºC and initiation of spawning occurs at 18-22ºC. The prey that ends up between its lips has no escape. Aquaculture Research, 35(1), 97-99. http://www.blackwell-synergy.com/links/doi/10.1111/j.1365-2109.2004.00983.x/abs/ doi: 10.1111/j.1365-2109.2004.00983.x, Penil C, 2004. (2010) revealed that water temperatures <17ºC marked a cessation in foraging activity and growth, which indicates thermal ecological sensitivity of S. glanis of particular relevance in northern habitats. SiluroMania si occupa inoltre della salvaguardia del silurus glanis, diventato un vero e proprio capro espiatorio per i crimini compiuti dall'uomo nell'ambiente. Ulikowski, D., Szczepkowski, M., Szczepkowska, B., 2003. Testing the Alms Welsfutter diet on sheath fish (Silurus glanis) culture in silos. Evaluation of production efficiency of selected feed mixes of intensive culture of European wels (Silurus glanis L.). The wels catfi sh, also called sheatfi sh ( Silurus glanis L.) is expanding very rapidly throughout the italian peninsula, com- pared to the fi rst case in Italy in 1937; in the waters of the rivers represent a real threat to native fi sh populations. Mareš, J., Jirásek, J., Ondra, R., 1996. Some of the environmental impacts of the species (see the Environmental Impact section) might have economic effects. Another reason for introductions is as a biocontrol agent for controlling cyprinid fish. Aquatic Biology, 8(2), 137-144. http://www.int-res.com/articles/ab2009/8/b008p137.pdf, Syväranta, J., Cucherousset, J., Kopp, D., Martino, A., Céréghino, R., Santoul, F., 2009. Public Domain - Released by Yuriy75/via wikipedia - CC0. A “do nothing” approach is advocated in low risk situations, whereas removal or containment are considered options in higher risk situations. Turk Veterinerlik ve Hayvancilik Dergisi, 28:613-622, Alp, A., Kara, C., Üçkardes, F., Carol, J., García-Berthou, E., 2011. of coldest month > 0°C and < 18°C, mean warmest month > 10°C, Cf - Warm temperate climate, wet all year, Warm average temp. 2009; Copp et al. by Cowx, I. G.]. 2011; Syväranta et al. Previous studies of cultured S. glanis in central and eastern Europe indicated that this species is capable of rapid growth in warm waters >20ºC (Linhart et al. PLoS ONE, 7(12), e50840. The addition of wels catfish in recreational catch and release fisheries is likely to have a beneficial revenue effect. 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 it is considered an expensive meat delicacy. Dietary breadth and trophic position of introduced European catfish Silurus glanis in the River Tarn (Garonne River basin), southwest France. 9696).A nocturnal predator, foraging near bottom and in water column. A seguito delle ormai numerose catture di esemplari di “silurus glanis” (siluro d’Europa) nelle acque del nostro lago di Garda avvenute negli ultimi periodi, l’ Unione Pescatori Sportivi del Garda (UPSdG) domenica 12 gennaio organizza un monitoraggio mirato al censimento di questa infestante e pericolosa specie alloctona. The skin is smooth, has no scales and is covered by slippery mucus. 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. Polish Journal of Natural Sciences, 23(4), 850-857. http://versita.com/science/agriculture/pjns/ doi: 10.2478/v10020-008-0008-0, Kim LeeOh, Lee SangMin, 2005. → For general information about fishes please click here. It has been in­tro­duced to sev­eral other areas in­clud­ing Ger­many, France, Spain, Eng­land, Greece, Turkey and the Nether­lands. Bogut, I., Opacak, A., Stevic, I., Bogdanic, C., 1995. Larval development and growth of the European wels (Silurus glanis) under experimental conditions fed natural and pelleted diets. © Copyright 2020 CAB International. Fish stock assessment of Lake Schulen, Flanders: a comparison between 1988 and 1999. 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. 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. The database includes records of species introduced or transferred from one country to another. Alp A, Kara C, Buyukcapar HM, 2004. (Le silure glane n'est pas un monster.) Assessing the effects of climate change on aquatic invasive species. (2005) gave S. glanis an intermediate mean risk score (21.5 out of 54 possible points). Development of technological regimes of European catfish (Silurus glanis L.) growing in the ponds of Belarus. 2009; Rees, 2010; Hickley and Chare, 2004). Proliferation has been assisted by unregulated introductions in many countries (Hickley and Chare, 2004; Clavero and Garcia-Berthou, 2006). Wels catfish are also hosts of specialist parasites such as Trichodina siluri, Myxobolus miyarii, Leptorhynchoides plagicephalus and Pseudotracheliastes stellifer which may be detrimental to native fish survival (Copp et al. It appears to establish relatively easily after introduction, especially in warmer climates such as around the Mediterranean (Crivelli, 1995). On the outer sides of the chin two more couples of barbels complete the range of the sensors. 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. 2008; Muscalu et al. (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. 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. Voracious invader or benign feline? Silurus glanis - Wikipedi . Again from the Greek word glanis, which is the name of the fish: Species Information; Size: 5000mm or 196.9" … “Silurus glanis is a commercial fish consumed by humans. Contenimento del siluro (Silurus glanis) nel fiume Adda Nel corso del 2019 dando seguito alle disposizioni di Regione Lombardia (DGR n.1965 del 22/7/21019), il Parco ha proceduto alla realizzazione di un progetto di contenimento di esemplari della specie Silurus glanisnel tratto del corso del fiume Adda ricadente nel territorio del Parco. Mouth is large and broad with very small, pointed teeth. 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. From phylogenetic analysis it seems likely that wels catfish represent an early diversification of Siluriformes (Vittas et al., 2011). Are fish introductions a threat to endemic freshwater fishes in the northern Mediterranean region? Native to eastern Europe and western Asia it is now established in several countries to the west and south of its native range. Each gram of ova has about 195 eggs prior to spawning. Zivocisna Vyroba, 42:27-32. Foto AdobeStock | Fyle. 2008). Naturwissenschaften, 96(5), 631-635. http://www.springerlink.com/content/96hh785038172pq0/?p=2d643a9f547444d5abaaed7c8e53b62d&pi=9 doi: 10.1007/s00114-009-0511-3, Triantafyllidis A, Krieg F, Cottin C, Abatzopoulos TJ, Triantaphyllidis C, Guyomard R, 2002. 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). In the UK, the government has developed an environmental risk strategy including risk identification, risk assessment, risk management and risk review and reporting. Diurnal and seasonal behaviour of adult and juvenile European catfish as determined by radio-telemetry in the River Berounka, Czech Republic. Native populations extend from Germany to Eastern Europe including Poland and southern Sweden, and also from northern Iran and southern Turkey to the Baltic states and Russia, and to the Aral sea of Kazakhstan and Uzbekistan (Copp et al., 2009). Weight and linear growth of wels (Silurus glanis L.) up to one month of age in aquarium rearing. 2003Gullu et al. Following introduction outside its native range, the wels catfish has become established in Bosnia-Herzegovina, Spain, Denmark and Tunisia with some ecological effects. 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. 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 Pond culture of fish in Romania. Other examples of depressed foraging activity and growth were reported at water temperatures <15ºC as fish were unable to metabolise food at temperatures <10ºC and were sedentary to minimise energy expenditure (Boujard, 1995). New sightings continue to occur being its range progressively expanding. 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). Larval and juvenile stages of introduced fish are most susceptible to predation due to small size (Gozlan et al. Evaluation of selected feeds differing in dietary lipids levels in feeding juveniles of wels catfish, Silurus glanis L. Acta Ichthyologica et Piscatoria, 38(2), 91-96. doi: 10.3750/AIP2008.38.2.02, Muscalu, R., Muscalu, C., Nagy, M., Bura, M., Szelei, Z. T., 2010. [Cefas Science Technical Report No. 06023 Maq OK.indd 19 21/07/2008 13:52:23 Manual de restauración de humedales mediterráneos 3.2 Directiva marco del agua y restauración del estado ecológico de los humedales Results of rearing two-year-old European wels (Silurus glanis L.) in ponds stocked with intensively cultured yearling. There is potential for dispersal during hydrological events (Slavik et al., 2007). Length at first maturity is 39-71 cm. Arrivata interpretazione Dpcm . 2011; Martino et al. The anal fin, very long, renders the body similar to a waving blade between the 6 stretched barbels © Giuseppe Mazza. The introduction of S. glanis in angling clubs is likely to increase revenue to local communities and generate business. pond cultivation. Status Review Report of 5 Species of Foreign Sturgeon. Some example maps demonstrate the extent of introductions. - Raccolta di ulteriori dati sulla presenza della specie nel fiume. FishBase. The profile of the fish might recall a Neolithic knife with a massive handle and long blade (specifying that in that time the blades were short). Genetic structure and phylogeography of European catfish (Silurus glanis) populations. (2002) investigated the genetic structure of S. glanis across most of its natural distribution using 10 microsatellite loci. 2008). ©Dieter Florian/via wikipedia - CC BY-SA 3.0 DE. Un enorme pesce siluro è stato pescato nella serata di lunedì 23 giugno a Como, più precisamente nella zona della diga Foranea.A compiere l’impresa è stato un giovane pescatore di origine ucraina, che ha impiegato 40 minuti per riuscire a tirare fuori dall’acqua il grosso esemplare. Age at maturity is 3-4 yrs. Aquatic Invasions, 2:113-116, Copp GH, Vilizzi L, Gozlan RE, 2010. They can be identified by 6 barbels, 2 long ones on each side of the mouth and 4 shorter ones from the lower jaw. For positive economic effects, see the sections on Uses (Invasive Species Compendium) or Production, Economic and Socioeconomic Aspects (Aquaculture Compendium). This fish has boneless white flesh that is low in fat and highly palatable. Conservation Biology, 22(3):521-533. http://www.blackwell-synergy.com/loi/cbi, Rees EMA, 2010. Migration to European rivers including the Danube, Dnieper and Volga was via the Caspian, Black and Aral seas. The flattened snout with spaced apart nostrils and long barbels on either side of the upper jaw, and 4 shorter barbels on the lower jaw, indicate that S. glanis sense their prey by highly sensitive chemical and olfactory sensors on their barbels and nostrils rather than by vision, as their eyes are small; this can be related to their benthic habitat ecology (Copp et al., 2009). S. glanis is the largest-bodied European freshwater fish. The distribution in this summary table is based on all the information available. (La production de poissons en pisciculture en Roumanie.) Territorio. However, consideration must be given to the economic costs that are likely to arise from management control policies with the removal of S. glanis from unlicensed waters; monitoring, removal costs and challenges in recapturing demersal species. 55 relazioni. There is one clear seasonal peak in spawning per year, between May and July. 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. To protect species or infer their invasiveness potential, it is necessary to understand the origin, genetic diversity and migration patterns. Effect of polizyme additive on the growth of catfish (Silurus glanis) fry in cage breeding. Zaikov, A., Iliev, I., Hubenova, T., 2008. Physiology & Behavior, 58(4):641-645, Boulêtreau, S., Cucherousset, J., Villéger, S., Masson, R., Santoul, F., 2011. Species and size selectivity of European cat-fish (Silurus glanis) to natural food when reared in aquarium to one month of age. → To appreciate the biodiversity within the Osteichthyes, the BONY FISH, and find other species, please click here. The flesh is good even if, due to pollution, before eating it is perhaps advisable to have the water analyzed © Sebastiano Guido. Hamácková, J., Kouril, J., Adámek, Z., Vachta, R., Stibranyiová, I., 1993. Secondly, catfish are opportunistic foragers, able to switch their feeding to the most suitable resource available. Fish are filleted and the flesh is cut into steaks or smoked for human consumption. Growth is an integrating variable of fish physiology and behaviour, and reduced growth can result from a variety of factors: food abundance, fish age, social hierarchy, change in water temperature, habitat and increased energy expenditures (Zaikov et al. Aquatic Conservation: Marine and Freshwater Ecosystems, 21(3):276-281. http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1099-0755, Mazurkiewicz, J., Przybyl, A., Golski, J., 2008. http://www.nmfs.noaa.gov/pr/pdfs/statusreviews/sturgeon_5foreign.pdf, Naylor RL, Williams SL, Strong DR, 2001. When meeting the man it shows indifference even if, when the approach is excessive, escapes with a lightning turn.

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