The wels catfish S. glanis is part of the family Siluridae, a group of freshwater fish native to Europe, Asia and Africa. The ecological trophic effect of S. glanis is unclear; some authors consider that the species can decimate tench (Tinca tinca) populations while others are of the view that as they are to some extent scavengers, their predatory impact may be benign rather than intense (Copp et al., 2009). Age at maturity is 3-4 yrs. Ce comportement peut cependant évoluer exceptionnellement, comme mis en évidence par une étude sur des silures du Tarn chassant en pleine journée des pigeons venus s'abreuver sur les rives de la rivière [5], [6] en se projetant hors de l'eau. There is potential for dispersal during hydrological events (Slavik et al., 2007). 2009Bevacqua et al. Status and development tendencies of freshwater aquaculture production in Bulgaria. UK: Environment Agency, 30 pp. Studies on wels catfish (Silurus glanis) development during cold season as an auxiliary species in sturgeon recirculated aquaculture systems. Rearing of European catfish (Silurus glanis L.) to marketable size in warm water at the laboratory scale. Fontenay-sous-Bois, France: Conseil Supérieur de la Pêche, 92 pp, Varadi, L., Szucs, I., Pekar, F., Blokhin, S., Csavas, I., 2001. Consent is usually not granted for open waters, although enclosed waters are permitted (Britton and Pegg, 2007; Copp et al., 2009). Le silure glane est un poisson de la famille des Siluridae, son nom latin est « Silurus glanis ». Mareš, J., Jirásek, J., Ondra, R., 1996. Native to eastern Europe and western Asia it is now established in several countries to the west and south of its native range. 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. Son alimentation principale est le plus souvent représentée par les cyprinidés les plus abondants dans son environnement tels que brèmes, carassins, carpes, tanches, rotengles, chevesnes, barbeaux, hotus, etc. Copepoda are the most frequent food of smaller larvae. On compte aujourd'hui seize espèces identifiées de silures, dont la plus connue est le silure glane. Handbook of European Freshwater Fishes. Fisheries Management and Ecology, 14:263-268, Britton, J. R., Davies, G. D., Brazier, M., 2010. Secondly, catfish are opportunistic foragers, able to switch their feeding to the most suitable resource available. Hamácková, J., Kouril, J., Adámek, Z., Vachta, R., Stibranyiová, I., 1993. Removal of wels catfish from unlicensed lakes appears to be a priority for the Environment Agency in England and Wales, although how successful these measures are in practice has yet to be ascertained. Reproduction biology in a native European catfish S. glanis, 1758, population in Menzelet Reservoir. Il reste la plupart du temps au fond et remonte très peu à la surface. 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. When several references are cited, they may give conflicting information on the status. CABI is a registered EU trademark. 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. Sperm cryopreservation of two European predator fish species, the Pikeperch (Sander lucioperca) and the Wels Catfish (Silurus glanis). Isolation of microsatellite loci in European catfish, Silurus glanis. Perfectionniste psychologie. 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). Fish consumption is low in central and eastern European countries in comparison to western Europe, which may be related to economic factors including income, fisheries trading and distribution (fish is more expensive than meat in most eastern European countries). Fisheries - Commercial designations. Comparative analysis of results of using different food rations in juvenile wels (Silurus glanis) culture. Control management options for S. glanis vary according to assessment of severity of risk. Freshwater Biology, 55(5):1130-1141. http://www3.interscience.wiley.com/cgi-bin/fulltext/123349915/HTMLSTART, Britton JR, Pegg J, 2007. Filet de Silure. 2001). S. glanis was introduced to the UK and western Europe in the nineteenth century. (Ucinkovitost dodatka polizyma na rast somovskog mlada (Silurus glanis) u kaveznom uzgoju). Egg size is 3 mm and larvae length at hatching is 8.5 mm. Larval development and growth of the European wels (Silurus glanis) under experimental conditions fed natural and pelleted diets. There is a risk that wels catfish may impact on native fauna for a number of reasons. Prokeš, M., Baruš, V., Penáz, M., Hamácková, J., Kouril, J., 1999. Body colour is variable but normally dark greenish-black with creamy yellow sides creating a mottled effect.They are solitary, predatory, opportunistic scavengers that hunt for stragglers (Boujard, 1995; Copp et al., 2009; Britton et al., 2010). 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). According to Naylor et al. Acta Ichthyologica et Piscatoria, 27(1), 41-50. Cornol, Switzerland: Publications Kottelat, 646 pp, Krieg F, Estoup A, Triantafyllidis A, Guyomard R, 1999. Age and growth of the European catfish (Silurus glanis) in a Turkish Reservoir and comparison with introduced populations. BioScience, 50(3):239-244, Shikhshabekov MM, 1978. http://www.fishbase.org. Zaikov, A., Iliev, I., Hubenova, T., 2008. 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. Signalé pour la première fois en 1993 Environ 400 … Hydrobiologia, 671:259-265. http://springerlink.metapress.com/content/1573-5117/, Boeseman M, 1975. In parts of its native range (e.g. Aquaculture development trends in Europe. In: Status Review Report of 5 Species of Foreign Sturgeon : National Marine Fisheries Service.78 pp. Lowestoft, UK: Cefas, 32 pp. Are fish introductions a threat to endemic freshwater fishes in the northern Mediterranean region? Migration to European rivers including the Danube, Dnieper and Volga was via the Caspian, Black and Aral seas. ©Dieter Florian/via wikipedia - CC BY-SA 3.0 DE. 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. In: Management and Ecology of Lake and Reservoir Fisheries [ed. 2008). Linolenic acid supplementation in the diet of European catfish (Silurus glanis): effect on growth and fatty acid composition. 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. 2011; Cucherousset et al. Options including draining of lakes, application of rotenone, capture of fish by fyke and seine netting, and electrofishing should be all reviewed in control management and risk assessment plans (Britton et al., 2009). The mitochondrial genome has 16,526 base pairs containing 37 genes, of which 13 genes are for protein synthesis, 22 tRNAs and 2rRNAs, and a control region which functions in the same way as other vertebrate mtDNAs. Risk of establishment increases in warmer climates such as the Mediterranean as rapid growth and breeding are enhanced by warmer temperatures of 25-28ºC in contrast to likelihood of more sporadic establishment in Northern climates. The potential risk of hybridization with native species is likely to be limited to native Silurus species, such as the native congener S. aristotelis in Greece. Molecular Ecology, 11:1039-1055. 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). 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. Il fraye en couple puis la femelle pond une grande quantité d'œufs dans un nid qu'elle a préparé et sur lequel le mâle veille jalousement. August 2011. Biological Conservation, 72:311-319, Cucherousset, J., Boulêtreau, S., Azémar, F., Compin, A., Guillaume, M., Santoul, F., 2012. 2007; Carol et al. En devenant membre de Anigaïdo vous pouvez : Inscrivez-vous à notre newsletter et recevez nos dernières actualités dans votre boite mail. Introductions to rivers in Spain have resulted in abundant populations in four river basins, where catfish can reach large sizes > 1 m (Carol et al., 2009). Statut de sauvegarde à l'état sauvage : Apprends le nom des mamans et des bébés animaux. (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. Several studies have indicated that the temperature threshold for optimum growth may vary between 22 and 26ºC (Mazurkiewicz et al., 2008), or 23-30ºC (Ulikowski et al., 2003) whereas Copp et al. Description : Le corps du silure glane est long et puissant ressemblant à celui du poisson chat. Males have running milt 30-40 days before spawning and produce sperm for relatively long periods, with a gradual, extended duration of spermatozoa discharge (Shikhshabekov, 1978). The influence of temperature on the growth of the European catfish (Silurus glanis). Science (Washington), 294(5547):1655-1656, Paschos, I., Nathanailides, C., Perdikaris, C., Tsoumani, M., 2004. L’introduction récente et sans aucune autorisation, faut-il le rappeler, du silure glane dans l’ensemble du réseau hydrographique pour satisfaire une poignée de pêcheurs, amateurs du « catch and release », n’a donné lieu à aucune sanction, alors que ce grand prédateur n’est pas inactif dans les cours d’eau. S. glanis is a robust species regarding transference outside its native range, and exhibits tolerance to low oxygen levels in water. Investigation on growth rate and food conversion ratio of wels (Silurus glanis L.) in controlled conditions. Comparison of morphology, growth and survival between Silurus glanis, S. aristotelis and their hybrid during larval and juvenile stages. 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. (2002), S. glanis has been farmed historically in Austria, Bulgaria, Croatia, Germany, France, Hungary, Greece, Macedonia, Poland, the Czech Republic and Romania. http://www.fishbase.org, Gozlan RE, Flower CJ, Pinder AC, 2003. Copp et al. Upstream spring migration in April for spawning requires temperatures of 8-10ºC and initiation of spawning occurs at 18-22ºC. Compétition avec les … AACL Bioflux, 3(5), 362-366. http://www.bioflux.com.ro/aacl, National Marine Fisheries Service, 2013. (Hamáčková et al., 1993; Bogut et al., 1995; Filipiak et al., 1997; Mareš et al., 2003), but there is little data available about growth using forage fish as food in natural ponds (Zaikov et al., 2008; Cirkovic, 2012). (2002), S. glanis has been farmed historically in Austria, Bulgaria, Croatia, Germany, France, Hungary, Greece, Macedonia, Poland, the Czech Republic and Romania. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. Le silure glane aime les eaux chaudes, la température de son habitat doit faire au moins 20° C en été. Le silure occupe les eaux calmes profondes et turbides des cours d’eau et plans d’eau de plaine. Its greater production in Bulgaria has been suggested (Hadjinikolova et al., 2010). Source : Zapping Sauvage. 2002; Muscalu et al. 2012). Journal of Ichthyology, 18:457-468, Simoens I, Breine JJ, Verreycken H, Belpaire C, 2002.