scholarly journals Non-native fish species in River Odra and Morava basins in the Czech Republic

2018 ◽  
Vol 67 (1) ◽  
pp. 81-96
Author(s):  
Bohumír Lojkásek ◽  
Stanislav Lusk
Keyword(s):  
Fish Species ◽  
Point Of View ◽  
Neogobius Melanostomus ◽  
Ctenopharyngodon Idella ◽  
Native Fish ◽  
Lepomis Gibbosus ◽  
Hypophthalmichthys Molitrix ◽  
Pseudorasbora Parva ◽  
The Czech Republic ◽  
Hypophthalmichthys Nobilis

Abstract There has been the assessment of current occurrence and situation of non-native fish species in two hydrological regions – the Upper Odra and Morava river basins. The river basin of Upper Odra is situated in the area of River Odra springs featuring mostly minor streams which are not currently accessible for the migration of fishes from the lower river parts and from the Baltic Sea because of the existence of tens of migration barriers in the area of Poland. There has been actually proved the occurrence of eight non-native fish species the presence of which is, with the exclusions of Carassius gibelio and Pseudorasbora parva, the result of the planned introduction related to the fish management activities. The River Morava basin consists of two parts – the system of the River Morava itself and the entire River Dyje basin. Currently, there are 16 non-native fish species. Apart from the eight species existing also in the Odra river basin, there are also eight other species the existence of which relates to the migration accessibility from the confluence of these two rivers for fishes from the River Danube through the lower part of the River Morava. The species Lepomis gibbosus, Neogobius melanostomus and Proterorhinchus semilunaris were the last ones which have arrived there by themselves. Coregonus maraena and Coregonus peled are bred in fishponds. The basic part of the non-native fishes’ spectrum existing in free waters of the two basins consists of the species which are bred in aquaculture and fishponds (Oncorhyncus mykiss, Salvelinus fontinalis, Ctenopharyngodon idella, Hypophthalmichthys molitrix, and Hypophthalmichthys nobilis). These species, with the exception of Hypophthalmichthys molitrix and Hypophthalmichthys nobilis, introduced also into the fishing grounds and especially Oncorhynchus mykiss and Ctenopharyngodon idella make the important fishes for anglers. Their presence in the waters of the Czech Republic might be considered as beneficial from the economic point of view. From the ecological point of view, the im- portant fact is that they have become very well acclimatised in the local conditions and their natural breeding does not take place and their distribution in water ecosystems, as well as their numbers are fully determined by the management of the Czech Anglers Union. However, Carassius gibelio, Pseudorasbora parva and also Lepomis gibbosus in the River Morava basin have been assessed as distinctly invasive species having more negative impacts on the original ichthyocenosis and biodiversity. Neogobius melanostomus is also potentially dangerous in this basin. In the case of spread of Lepomis gibosus into the River Odra basin, it might become also potentially highly dangerous.

scholarly journals An Annotated List of the Fishes of the Western Basin of Lake Erie with Emphasis on the Bass Islands and Adjacent Tributaries

2016 ◽  
Vol 116 (2) ◽  
pp. 36
Author(s):  
Thomas P. Simon ◽  
Charles Boucher ◽  
David Altfater ◽  
Dennis Mishne ◽  
Brian Zimmerman
Keyword(s):  
Fish Species ◽  
Fish Assemblage ◽  
Native Species ◽  
Salmo Trutta ◽  
Lake Erie ◽  
Neogobius Melanostomus ◽  
Ctenopharyngodon Idella ◽  
Current Status ◽  
Fish Assemblage Structure ◽  
Western Basin

Fish assemblage structure has changed dramatically in the Western Basin of Lake Erie since Trautman’s revision of the Fishes of Ohio. Fish surveys near the Bass Islands and adjacent mainland tributaries documented fish faunal distributional patterns during the last three decades. Recent collections (n=1,719 sites) from 1982-2014 indicate that 123 fish species are extant and 27 species have been extirpated from the Bass Islands and nearby tributaries draining the western basin. Extirpation of Polyodon spatula, Alosa sapidissima, Moxostoma lacurum, and Sander glacum occurred; however, A. sapidissima and members of genus Oncorhynchus were introduced and unable to naturalize. Recent collection of A. fulvescens in Schoolhouse bay near Middle Bass Island in May 2012; Umbra limi populations on Middle Bass Island and Kelley’s Island; and Lepisosteus oculatus populations along the southeastern shoreline of North Bass Island are stable in Lake Erie despite increased eutrophication. The current Western Basin fish assemblage includes 107 native, 26 nonindigenous, and 6 alien fish species. Twenty-one native species have been extirpated from Lake Erie, while 6 nonindigenous species have not naturalized and have been extirpated. Six additional species known from within the Lake Erie basin have not been collected from the Western Basin during the study period and current status is unknown. Introduced non-indigenous and alien species are responsible for increased species richness including Neogobius melanostomus, Proterorhinus semilunaris, Salmo trutta, Carassius auratus, Cyprinus carpio, Ctenopharyngodon idella and four records for Hyphthalmichthys molatrix since 1981. Brief comments on distribution, relative abundance, and status are provided for each species. 

scholarly journals Pastoral aquaculture in the reservoirs of the Kuban basin

2020 ◽  
Vol 175 ◽  
pp. 02010 ◽  
Author(s):  
Alexey Abramchuk ◽  
Georgy Moskul ◽  
Natalia Pashinova ◽  
Natalia Yurina ◽  
Denis Yurin
Keyword(s):  
Cyprinus Carpio ◽  
Aquatic Ecosystems ◽  
Taxonomic Composition ◽  
Ctenopharyngodon Idella ◽  
Hypophthalmichthys Molitrix ◽  
Production Potential ◽  
Hypophthalmichthys Nobilis ◽  
Mylopharyngodon Piceus ◽  
Fish Productivity ◽  
Individual Mass

The article provides calculations and recommendations for fisheries development and improvement of fish productivity of reservoirs in the Kuban basin. The taxonomic composition of water biological resources has been studied and the natural bio-production potential of some reservoirs in the South of Russia has been determined. It is proposed for the purpose of pastoral aquaculture to produce directed formation of the ichthyofauna of reservoirs by yearlings Hypophthalmichthys molitrix, Hypophthalmichthys nobilis, Ctenopharyngodon idella, and as anaddition Cyprinus carpio, Mylopharyngodon piceus, Liza haematocheila with an individual mass not less than 25-30 g, which will allow rational use of forage resources of aquatic ecosystems.

scholarly journals Identification And Study Of Fish Species In Karkheh River (Iran)

2014 ◽  
Vol 16 (2) ◽  
pp. 97-106
Author(s):  
Zahra Khoshnood
Keyword(s):  
Fish Species ◽  
Cyprinus Carpio ◽  
Shannon Index ◽  
Ctenopharyngodon Idella ◽  
Hypophthalmichthys Molitrix ◽  
Fish Biodiversity ◽  
Barbus Grypus ◽  
Barbus Sharpeyi ◽  
Liza Abu

Abstract For the investigation of fish from Karkheh River, sampling was performed in a six month period from August 2014 to January 2015. All sampled fish were measured for biometrical values (length and weight). General results of the sampling and identification of the fish showed the presence of 14 species from four fish families of Cyprinidae, Mugilidae, Siluridae and Macrostomidae, out of which the Cyprinidae family were the most frequent of the sampled fish. The most significant abundance belongs to Cyprinus carpio. The fish sampled in the present study were: Liza abu, Ctenopharyngodon idella, Barbel sp., Cyprinion macrostomum, Barbus sharpeyi, Hypophthalmichthys molitrix, Barbus esocinus, Barbus barbulus, Barbus luteus, Barbus grypus, Cyprinus carpio, Silurus triostegus, Mastacembelus circumcinctus and Capoeta trutta. Shannon Index results showed that the fish biodiversity in the studyed area followed a uniform path and additionally that the considered area at the studied period has good fish biodiversity.

scholarly journals Assessment of Potential Toxic Elements in Muscle Tissues of Different Fish Species from Colentina, Dambovita and Arges Rivers, Romania

2001 ◽  
Vol 71 (3) ◽  
pp. 19-28 ◽  
Author(s):  
Petra Ionescu ◽  
Violeta-Monica Radu ◽  
Gyorgy Deak ◽  
Elena Diacu ◽  
Alexandru Anton Ivanov ◽  
...  
Keyword(s):  
Human Health ◽  
Fish Species ◽  
Toxic Elements ◽  
Perca Fluviatilis ◽  
Point Of View ◽  
Lepomis Gibbosus ◽  
Toxic Substances ◽  
Potential Toxic Elements ◽  
Ameiurus Nebulosus ◽  
Muscle Tissues

At global level, anthropic activities have led to the emergence in the environment of different toxic substances, which tend to accumulate within the food chain, thus presenting risks to human health. As a result, the assessment of potentially toxic elements, particularly heavy metals, in fish is highly important from the point of view of human health as fish is frequently consumed by people. This paper presents the results of a study on determining some potential toxic elements such as Cd, Pb, Hg, Cu, Cr, Ni and Zn in muscle tissue resulting from six different fish species (Alburnus alburnus, Carassius gibelio, Scardinius erythrophthalmus, Ameiurus nebulosus, Perca fluviatilis, Lepomis gibbosus) from the Colentina, Dambovita and Arges Rivers situated in southern Romania area, and to compare the results with the relevant international guidelines.

BIOLOGICAL MELIORATION OF THE AZOV LIMANS OF THE KRASNODAR KRAI AND THE POSSIBILITY OF USING FUNDS OBTAINED AS COMPENSATION FOR THE HARM TO THE WATER BIOLOGICAL RESOURCES

2017 ◽  
pp. 34-41 ◽  
Author(s):  
Oleg Sergeyevich Denisenko
Keyword(s):  
Fish Species ◽  
Grass Carp ◽  
Aquatic Vegetation ◽  
Silver Carp ◽  
Environmental Data ◽  
Ctenopharyngodon Idella ◽  
Complete Disappearance ◽  
Hypophthalmichthys Molitrix ◽  
Krasnodar Krai ◽  
Biological Resources

The author has carried out a retrospective analysis of environmental data about the Azov limans of the Krasnodar Krai. The increasing liman deterioration leading to their complete disappearance has been noted. Assessment of the priority of liman fish economy has been given. In terms of biological melioration there have been offered measures on stocking limans with herbivorous fish species of different age: grass carp Ctenopharyngodon idella and white silver carp Hypophthalmichthys molitrix , and determined necessary amounts of yearly stocking of the Azov limans. Modern data on the overgrowth in the water area of the Azov limans by higher aquatic vegetation have been presented in the context of the main groups of limans. The groups of limans were graded according to the priority of conducting biological melioration measures in them and practical recommendations were given on the quantity and places of stocking of the Azov limans grass carp and white silver carp depending on the degree of overgrowth. The necessity of using the funds received as compensation for the harm to water biological resources in the Krasnodar Krai for the artificial reproduction of grass carp and white silver carp and their introduction into the Azov limans has been substantiated. The article shows that stocking limans with herberous fish species will both ensure ameliorative effect and increase amount of fish commercial output.

scholarly journals The Indigenous and Invasion Fishes In Two Main Reservoirs in the Southwestern Anatolia (AYDIN)

2013 ◽  
Vol 5 (1) ◽  
pp. 97-101
Author(s):  
Hüseyin Sasi ◽  
Selcuk Berber
Keyword(s):  
Cyprinus Carpio ◽  
Habitat Degradation ◽  
Fish Fauna ◽  
Native Fish ◽  
Lepomis Gibbosus ◽  
Pseudorasbora Parva ◽  
Exotic Fish ◽  
Silurus Glanis ◽  
Büyük Menderes River ◽  
Squalius Cephalus

Buyuk Menderes River basin, located in the Southern part of Turkey, has two significant dam lakes. Threats include pollution (industrial and agricultural activities), overfishing, habitat degradation and drought. This study was carried out to determine the native and non-native fish fauna in Kemer and Topcam dams lakes in the Buyuk Menderes River. Specimens were caught by scoop and gill nets between April 2007 and February 2008. Kemer is inhabited by Cyprinus carpio, Squalius cephalus, Barbus plebejus escherichi, Silurus glanis Acanthobrama mirabilis and Chondrostoma maendrense. In Topcam Dam has Cyprinus carpio, Squalius cephalus, Acanthobrama mirabilis and Capoeta bergama. Both had the invasive Lepomis gibbosus, Pseudorasbora parva and Carassius gibelio. Acanthobrama mirabilis is endangered fishes and Chondrostoma maendrense and Capoeta bergamae are two of the vulnerable species.KEY WORDSKemer, Topcam Dam Lake, Native, Exotic fish, Anatolia.

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