Is European catfish (Siluris glanis) really becoming abundant in the River Thames? 2002; Varadi et al. It appears to establish relatively easily after introduction, especially in warmer climates such as around the Mediterranean (Crivelli, 1995). Fish are filleted and the flesh is cut into steaks or smoked for human consumption. 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. of coldest month > 0°C and < 18°C, mean warmest month > 10°C, Cf - Warm temperate climate, wet all year, Warm average temp. Eggs are protected by mucous and stickiness. The maximum reported length is of five metres, but the specimens presently found in Italy rarely do exceed the two, also because the bigger specimens are the oldest ones and due to its age that may reach the 80 years, clearly those present in Italy will have to grow up for some decade more before reaching record dimensions. Establishment success in France has been restricted by cold winter temperatures of <10ºC (David, 2006). Czech Journal of Animal Science, 44(1), 29-37. Aquacultura Hungarica, 4: 135-144. Silurus glanis. 1996; Ulikowski et al. Aquaculture in the Third Millennium. The European catfish (Silurus glanis) can reach the 80 years with record size of 5 m and 300 kg. Status and development tendencies of freshwater aquaculture production in Bulgaria. Head is broad and flat. Diel rhythms of feeding activity in the European catfish, Silurus glanis. Effect of stocking density and three various diets on growth and survival of European catfish (Silurus glanis L.) larvae under intensive rearing condition. 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. Average temp. Territorio. > 10°C, Cold average temp. Our inland waters have very impoverished and this dearth by sure is not favouring important dimensions. Larval and juvenile stages of introduced fish are most susceptible to predation due to small size (Gozlan et al. The distribution in this summary table is based on all the information available. The eggs are large, about 1-3 mm in diameter (Copp et al., 2009). pond cultivation. Copp et al. There are 18 Silurus species, of which two are native to Europe: wels catfish and Aristotle's catfish (S. aristotelis). Acta Ichthyologica et Piscatoria, 26(1), 93-101. There is potential for dispersal during hydrological events (Slavik et al., 2007). 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. – Raccolta di ulteriori dati sulla presenza della specie nel fiume. 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). 2012). temperature and day length. 2000). Ulikowski, D., Borkowska, I., Chybowski, L., 1998. The European catfish or Wels catfish ( Silurus glanis Linnaeus 1758) is a freshwater fish belonging to the class of the Actinopterygii, ray-finned fishes, to the order of the Siluriformes, and to the family of the Siluridae, that has no rigid rays in the dorsal, has no adipose fin and has some small ventral fins (at … When several references are cited, they may give conflicting information on the status. 2003; Carol et al. 2002; Ulikowski et al. 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. Harka, A, 1984. It is estimated that the number of eggs is of around 30.000 per each kilo of weight of the mother. GISD/IASPMR: Invasive Alien Species Pathway Management Resource and DAISIE European Invasive Alien Species Gateway. 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. Following introduction outside its native range, the wels catfish has become established in Bosnia-Herzegovina, Spain, Denmark and Tunisia with some ecological effects. It was first introduced to England in 1880, into enclosed recreational lakes of a private Bedfordshire manor estate at Woburn Abbey, for fishing. 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. 10 ft.). Journal of Applied Icthyology, 1:27-31, Jamróz, M., Kucharczyk, D., Kujawa, R., Mamcarz, A., 2008. 55 relazioni. Contribution of anadromous fish to the diet of European catfish in a large river system. CABI is a registered EU trademark. Under them an ample mouth with fleshy lips and strong jaws with tiny teeth, who do not forgive those being aspirated. Again from the Greek word glanis, which is the name of the fish: Species Information; Size: 5000mm or 196.9" … The influence of temperature on the growth of the European catfish (Silurus glanis). 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. Zaikov, A., Iliev, I., Hubenova, T., 2008. Movement to new areas is generally through introduction for aquaculture and recreational fishing, or sometimes for biological control. Media in category "Silurus glanis" The following 96 files are in this category, out of 96 total. Il siluro (Silurus glanis Linnaeus, 1758) nelle acque del Lago di Massaciuccoli: un rischio per la biodiversità ... tipico delle aree umide del territorio nazionale (A.A. The introduction of S. glanis in angling clubs is likely to increase revenue to local communities and generate business. Desde entonces han sido muchos los lugares donde ha aparecido, alterando el equilibrio natural del ecosistema al que lle- gan. Journal of Fish Biology, 71:101-114, Syväranta, J., Cucherousset, J., Kopp, D., Crivelli, A., Céréghino, R., Santoul, F., 2009. Also the caudal fin is little developped. Foto AdobeStock | Fyle. 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). 2011; Cucherousset et al. 2010). 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. 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 species is popular with anglers, and a minority of anglers are in favour of releasing it into to rivers, while others are content that it remains in licensed lakes. Its greater production in Bulgaria has been suggested (Hadjinikolova et al., 2010). Zhivotnov'dni Nauki, 37(5/6), 14-18. http://www.fishbase.org, Gozlan RE, Flower CJ, Pinder AC, 2003. S. glanis is robust enough during transport (even in minimal water and over considerable distances) to be translocated to areas outside its native geographical range (Copp et al., 2009). In parts of its native range (e.g. 2009; Copp et al. Weight and linear growth of wels (Silurus glanis L.) up to one month of age in aquarium rearing. Silurus glanis. Possibilities of breeding catfish in ponds in Poland. “Silurus glanis is a commercial fish consumed by humans. Use of frozen zooplankton in the intense rearing of European catfish (Silurus glanis L.) larvae. 2009; Rees, 2010; Hickley and Chare, 2004). Science (Washington), 290(5491), 516-518. doi: 10.1126/science.290.5491.516, Hickley P, Chare S, 2004. (Black, Predator-fishing.co.uk 2005) To protect species or infer their invasiveness potential, it is necessary to understand the origin, genetic diversity and migration patterns. Bogut, I., Opacak, A., Stevic, I., Bogdanic, C., 1995. Age and growth of the European catfish (Silurus glanis) in a Turkish Reservoir and comparison with introduced populations. A set of elongated barbels, present on both jaws, completes the characteristics of the Siluridae. 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. Proceedings of the National Academy of Sciences of Belarus., Agrarian Science Series: 2:75-86. Body is elongated and lacks scales. 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 … 2007; Carol et al. Silurus glanis (wels catfish); adult, in the open water of a former surface mine near Leipzig, Germany. Pesticides should always be used in a lawful manner, consistent with the product's label. National Marine Fisheries Service, 10 (3), 252-282. http://www.blackwell-synergy.com/loi/faf DOI:10.1111/j.1467-2979.2008.00321.x, Froese R, Pauly D, 2012. S. glanis cultivation has played a minor role in cyprinid pond farming. Currently, wels catfish are predominantly found in the South East and Midlands areas of the UK. Silurus glanis, conosciuto volgarmente come siluro o siluro d'Europa o anche pesce siluro, è un pesce d' acqua dolce europeo, appartenente alla famiglia dei Siluridae . http://www.nmfs.noaa.gov/pr/pdfs/statusreviews/sturgeon_5foreign.pdf, Naylor RL, Williams SL, Strong DR, 2001. There are 100 species from 12 genera in the family. The European catfish (Silurus glanis) can reach the 80 years with record size of 5 m and 300 kg. Growth and diet of European catfish S. glanis in early and late invasion stages. 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. It is also established in Italy, Syria, Portugal, Croatia, Turkey, the UK, France, the Netherlands and China, although ecological impact here is unknown. Bulgarian Journal of Agricultural Science, 4(6), 841-846. Aquaculture - a gateway for exotic species. By closing strongly the jaws, it gradually chokes the victims closing their gills while, simultaneously, rotates them in way that the spines are not opposite to the way leading them to the stomach. The species is an effective ambush predator of slower moving Cyprinid species (Copp et al., 2009). 129. The tiny dorsal fin on its upper body, rounded caudal fin and strong upper body assist the swimming motion. UK: Environment Agency, 30 pp. Effects of the dietary protein and lipid levels on growth and body composition of bagrid catfish, Pseudobagrus fulvidraco. 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). Rapid evolution of reproductive isolation in the wild: evidence from introduced salmon. (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. S. glanis has a broad omnivorous diet, including invertebrates and vertebrates such as small rodents. 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. 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. The large size suggests high potential for dispersal (Copp et al., 2009), although the limited available information on movement and migration suggests that the species demonstrates considerable site fidelity (Carol et al., 2007). 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). Filipiak, J., Sadowski, J., Trzebiatowski, R., 1997. Journal of Ichthyology, 18:457-468, Simoens I, Breine JJ, Verreycken H, Belpaire C, 2002. BioScience, 50(3):239-244, Shikhshabekov MM, 1978. (2009) indicated a narrower range between 25 and 28ºC. Homogenization dynamics and introduction routes of invasive freshwater fish in the Iberian Peninsula. The feeding selectivity of wels (Silurus glanis L.) in Lake Goreckie. In contrast, O. mykiss total production was 300,000 tonnes in 2005, and the figure had risen to 700,000 tonnes in 2010 and was likely to increase (FAO, 2012; Linhart et al. Towards the successful control of the invasive Pseudorasbora parva in the UK. Handbook of European Freshwater Fishes. 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). Archives of Polish Fisheries, 11:141-147, David JA, 2006. Mareš, J., Wognarová, S., Spurný, P., 2003. In Italy it has been introduced since about fifty years and now has colonized almost all the waters of the Po River basin and the rivers Arno and Tiber. 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). S. glanis is native to eastern Europe and western Asia (Kinzelbach, 1992), but is now established in at least seven countries to the west and south of its native range (Elvira, 2001). Considerations regarding the rearing of European catfish, Silurus glanis L. in a flow-through production aquaculture system. Ecological Applications, 16(6):2313-2324. http://www.esajournals.org/perlserv/?request=get-abstract&doi=10.1890%2F1051-0761%282006%29016%5B2313%3AHDAIRO%5D2.0.CO%3B2, Copp GH, Britton JR, Cucherousset J, García-Berthou E, Kirk R, Peeler E, Stakenas S, 2009. The database includes records of species introduced or transferred from one country to another. 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 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. Fischokologie, 6:7-20, Kottelat M, Freyhof J, 2007. Fish and Fisheries. Évolution de son aire de répartition et prédiction de son extension ([English title not available]). Comparison of morphology, growth and survival between Silurus glanis, S. aristotelis and their hybrid during larval and juvenile stages. Dietary breadth and trophic position of introduced European catfish Silurus glanis in the River Tarn (Garonne River basin), southwest France. The predicted increase of water temperatures of 2-3ºC by 2050 as a result of climate change is likely to amplify the risk of establishment and breeding success in the UK and other northern countries (Rahel and Olden, 2008; Britton et al., 2010). Water and Environment Journal, 20(4):233-239. http://www.blackwell-synergy.com/loi/wej. Length at first maturity is 39-71 cm. While growing in size, also the dimensions of the preys increase. Species and size selectivity of European cat-fish (Silurus glanis) to natural food when reared in aquarium to one month of age. Fontenay-sous-Bois, France: Conseil Supérieur de la Pêche, 92 pp, Varadi, L., Szucs, I., Pekar, F., Blokhin, S., Csavas, I., 2001. Journal of Animal and Veterinary Advances, 7(10), 1285-1291. http://www.medwelljournals.com/fulltext/java/2008/1285-1291.pdf, Hadjinikolova, L., Hubenova, T., Zaikov, A., 2010. http://www.fishbase.org. Consumer popularity of cultured S. glanis has remained low (Varadi et al. Oxford, UK: Fishing News Books, 46-57, Slavík O, Horký P, Bartoš L, Kolárová J, Randák T, 2007. Fundamental and Applied Limnology, 174:317-328, Carol J, Garcia-Berthou E, 2007. [Cefas Science Technical Report No. > 0°C, wet all year, Cs - Warm temperate climate with dry summer, Warm average temp. Each gram of ova has about 195 eggs prior to spawning. Journal of Applied Ichthyology, 18(1), 1-6. doi: 10.1046/j.1439-0426.2002.00304.x. However, there are reports of breeding in some lakes in southern England at present temperatures (Copp et al., 2009). GardaPost Gen 11, 2020. Gillnet selectivity and its relationship with body shape for 8 freshwater species. Wels catfish are distinguishable by an elongated scale-less, slime-covered body, with strong upper body strength and laterally flattened tail. 19. Information regarding the wels catfish nuclear and mitochondrial genomes is sparse. Their paired pelvic fins are each made up of one spine and 11-12 soft rays and have paired pectoral fins of one spine and 14-17 soft rays. Reproduction biology in a native European catfish S. glanis, 1758, population in Menzelet Reservoir. 2003Gullu et al. Larvae and juveniles are benthic feeders of invertebrate zooplankton such as Rotatoria, Copepoda and Cladocera. 2009; Syväranta et al. From phylogenetic analysis it seems likely that wels catfish represent an early diversification of Siluriformes (Vittas et al., 2011). The wels catfish S. glanis is part of the family Siluridae, a group of freshwater fish native to Europe, Asia and Africa. It has been introduced but not established in Cyprus, Belgium and Algeria (Froese and Pauly, 2012). Aquaculture of this species is constrained by water temperatures <10ºC during winter months in some regions of Europe including France. 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. It can be found hidden under many sunken boats or in the woodsheds (masses of brushwoods thrown in water to favour the reproduction and the growth of the fishes), in fissures of the rocks, in the impenetrable tangles of long weeds and in all the sites, mud included, that may offer a safe daytime shelter. 9988).Found in deep waters of dams constructed on the lower reaches of rivers (Ref. In April 2012, accidental flooding from licensed lakes containing wels catfish into flood valleys of the River Colne and Chelmer in East Anglia were being investigated. The risks to native species are through disease and parasite transmission, competition for benthic habitats and predation. However, Martino et al. Egg size is 3 mm and larvae length at hatching is 8.5 mm. Preliminary studies of intensive wels catfish (Silurus glanis L.) and sturgeon (Acipenser sp.) 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). Effect of polizyme additive on the growth of catfish (Silurus glanis) fry in cage breeding. Aquaculture, 243(1/4), 323-329. http://www.sciencedirect.com/science/journal/00448486, Kinzelbach R, 1992. S. glanis is a popular fish among anglers because of its large size and relatively frequent capture. Simoens 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). 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). 2009; Copp et al. 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. Life span is normally 15-30 years, with a maximum recorded age of 80 years (Kottelat and Freyhof, 2007). Reviews in Fish Biology and Fisheries, 21(2), 283-294. http://www.springerlink.com/link.asp?id=100215 doi: 10.1007/s11160-010-9168-4, Bevacqua D, Andrello M, Melià P, Vincenzi S, Leo GA de, Crivelli AJ, 2011. Water quality and accelerated winter growth of European catfish using an enclosed recirculating system. Ulikowski, D., Szczepkowski, M., Szczepkowska, B., 2003. 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. In the UK, the government has developed an environmental risk strategy including risk identification, risk assessment, risk management and risk review and reporting. Public Domain - Released by Yuriy75/via wikipedia - CC0. Secondly, catfish are opportunistic foragers, able to switch their feeding to the most suitable resource available. The name of the genus comes from the Latin “silurus” that means torpedo indicating the big freshwater fish. It and Sander lucioperca are predatory fish that are traditionally reared to control wild forage fish dispersed during seasonal pond flooding that may be interspecific competitors with cyprinids (Bokor et al. 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. Penil (2004) suggests that it may expand its range by movement in man-made canal networks. Biological Conservation, 72:311-319, Cucherousset, J., Boulêtreau, S., Azémar, F., Compin, A., Guillaume, M., Santoul, F., 2012. Genetic structure and phylogeography of European catfish (Silurus glanis) populations. 2002; Muscalu et al. Is European catfish a threat to eels in southern France? (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. Reproductive success in male sunbleak, a recent invasive fish species in the UK. Data source for updated system data added to species habitat list. Hamácková, J., Kouril, J., Adámek, Z., Vachta, R., Stibranyiová, I., 1993. In other locations, instead, it is forbidden to the fishermen taking it ashore to place it again in water. 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. Fish and Fisheries, 10(3):252-282. http://www.blackwell-synergy.com/loi/faf, Copp GH, Garthwaite R, Gozlan RE, 2005. Arrivata interpretazione Dpcm . 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). 2001). (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. Presence of Silurus glanis Linnaeus, 1758, in the Volturno Basin. However the species still accounts for only a small percentage of European freshwater aquaculture. SILURUS GLANIS ASSOCIATION has 2,760 members. Il Siluro (Silurus glanis), originario dell’Europa centro settentrionale e dell’Asia Minore, … 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. Fisheries Management and Ecology, 14:263-268, Britton, J. R., Davies, G. D., Brazier, M., 2010. 2009Bevacqua et al. In the origin countries, besides the flesh consumed fresh or smoked, the skin is utilized for producing glues and for the leather industry. 2001) with some limited but renewed awareness among fish farmers in France and Germany (Linhart et al. According to Naylor et al. There is considerable research on growth of S. glanis in aquaculture (Harka, 1984; Hilge, 1984, 1985; Mareš et al. Sweden and Greece) it is under threat from climate and habitat changes and species introductions (Copp et al., 2009; Britton et al., 2010). S. glanis is the largest-bodied European freshwater fish. Molecular Ecology, 8(11):1964-1966, Linhart O, Stech L, Svarc J, Rodina M, Audebert JP, Grecu J, Billard R, 2002. A dart, a cloud of dust and also this is seized with no escape. 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. Foraging is an important aspect of growth and Muscalu et al. 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. Archiwum Rybactwa Polskiego, 11: 295-300, Valadou B, 2007. Wels catfish can be distinguished from other European catfish by the 6 long barbels under the lower jaw, the scaleless mucous-coated elongated body and the very small dorsal fin (Britton et al., 2010). Studies on the growth of sheatfish (Silurus glanis L.) in river Tisza. Diurnal and seasonal behaviour of adult and juvenile European catfish as determined by radio-telemetry in the River Berounka, Czech Republic. Elvira B, 2001. Fondi per il contenimento del pesce siluro sul territorio cremasco Si interverrà nei comuni di Crema, Madignano, Ripalta Cremasca, Ripalta Arpina, Ripalta Guerina e Montodine dove è stata accertata la presenza del pesce siluro. Generate a print friendly version containing only the sections you need. 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.
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