scholarly journals Ihtiofauna lacului refrigerеnt Cuciurgan în anul 2020

2021 ◽  
Author(s):  
Mihail Mustea ◽  
Keyword(s):  
Invasive Species ◽  
Functional Status ◽  
Fish Species ◽  
Aquatic Ecosystem ◽  
Invasive Fish ◽  
Pseudorasbora Parva ◽  
Cooling Reservoir ◽  
Main Emphasis ◽  
Diversity Structure

The relevance of the paper lies in the fact that in previous investigations of the ichthyofauna of Cuciurgan cooling reservoir, the main emphasis was placed on economically valuable species. However, a number of invasive fish species have been less investigated, despite occupying, and currently occupying, dominant positions in the structure of the ichthyocenosis of this aquatic ecosystem. The aim of the paper is to research and update data on the diversity, structure and functional status of the ichthyofauna of the Cuciurgan cooling reservoir in conditions of increased anthropogenic and bioinvasive impact. The invasive species Pseudorasbora parva was first identified in the resevoir ecosystem.

Results of fisheries research of the Shaturskaya group of lakes

Fisheries ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 52-60
Author(s):  
Andrey Bykov
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Thermal Regime ◽  
Seasonal Migration ◽  
Fishing Gear ◽  
Invasive Fish ◽  
Cooling Reservoir ◽  
Quantitative Indicators

Based on the results of comprehensive fisheries research, a brief description of the ecosystem of the lake of the Shaturskaya group operated in the mode of the cooling reservoir of the Shaturskaya GRES is given. The features of the thermal regime of the Shatursky lakes in the zone of the circulating flow of cooled waters are considered. A brief description of the species composition and quantitative indicators of the development of phytoplankton, zooplankton and macrozoobenthos communities is given. The structure of fish catches in the lakes depending on the fishing gear used is considered according to the data of accounting surveys with set nets and fry drag. The process of formation of the ichthyofauna of Shatursky lakes, characteristic of natural and man-made ecosystems of reservoirs-coolers of energy facilities, is shown. The occurrence of native and invasive fish species in catches is described, and the mechanism of seasonal migration of fish depending on the temperature and oxygen regimes of the Shatursky lakes is considered.

The effects and interactions of three invasive fish species introduced to the aquatic ecosystem of a Turkish Lake (Eğirdir Lake)

2021 ◽  
Author(s):  
Meral Apaydın Yağcı ◽  
Ahmet Alp ◽  
Şenol Akın ◽  
Abdulkadir Yağcı ◽  
Vedat Yeğen ◽  
...  
Keyword(s):  
Fish Species ◽  
Aquatic Ecosystem ◽  
Invasive Fish ◽  
Eğirdir Lake ◽  
Egirdir Lake

scholarly journals A Three-Pass Electrofishing Removal Strategy Is Not Effective for Eradication of Prussian Carp in a North American Stream Network

2020 ◽  
Vol 11 (2) ◽  
pp. 485-493
Author(s):  
Jamie T. Card ◽  
Caleb T. Hasler ◽  
Jonathan L.W. Ruppert ◽  
Caitlyn Donadt ◽  
Mark S. Poesch
Keyword(s):  
Invasive Species ◽  
Population Size ◽  
Fish Species ◽  
Red Deer ◽  
Probability Of Detection ◽  
Aquatic Invasive Species ◽  
Gibel Carp ◽  
Invasive Fish ◽  
Stream Network ◽  
Prussian Carp

Abstract Prussian Carp Carassius gibelio, also referred to as Gibel Carp, is a destructive aquatic invasive species, recently found in Alberta, Canada. Three-pass electrofishing is a potential approach to control some aquatic invasive fish species in stream habitats. The objectives of this study were to 1) determine the efficacy of this strategy to control Prussian Carp in connected streams and 2) assess whether population size or the distance to the introduction site would influence removal success. We sampled sites by using electrofishing in tributaries of the Red Deer River in both the summer and fall and detected Prussian Carp at all sites before removal, with >90% probability of detection of this species within the first 120 m of electroshocking efforts. Overall, we were not successful at removing Prussian Carp from the sample sites, and we found that abundances of Prussian Carp were significantly higher postremoval. Removal success related significantly to distance to the introduction site, suggesting that removal may be useful in targeted situations close to the edge of the invasion front.

scholarly journals Monitoring the eradication of the highly invasive topmouth gudgeon (Pseudorasbora parva) using a novel eDNA assay

2018 ◽  
Author(s):  
Chloe Victoria Robinson ◽  
Carlos Garcia de Leaniz ◽  
Matteo Rolla ◽  
Sofia Consuegra
Keyword(s):  
Invasive Species ◽  
Water Framework Directive ◽  
Ecological Integrity ◽  
Qpcr Assay ◽  
Detection Methods ◽  
Invasive Fish ◽  
Pseudorasbora Parva ◽  
Monitoring Methods ◽  
Topmouth Gudgeon ◽  
Trade Offs

AbstractAquatic Invasive Species (AIS) represent an important threat for Biodiversity and are one of the factors determining the ecological integrity of water bodies under the Water Framework Directive. Eradication is one of the most effective tools for the management of invasive species but has important economic and ecological trade-offs and its success needs to be carefully monitored. We assessed the eradication success of the topmouth gudgeon (Pseudorasbora parva), an invasive fish that poses significant risks to endemic aquatic fauna, in four ponds previously treated with the piscicide Rotenone using a novel environmental DNA (eDNA)-qPCR assay. Topmouth gudgeon was detected in all four treated ponds using 750 mL water samples and in three of the ponds using 15 mL samples, despite the eradication treatment. The highly sensitive qPCR assay detected topmouth gudgeon in a significantly greater proportion of sites (77.5%) than eDNA detection methods based on conventional PCR (35%). Our results highlight the difficulties of eradicating invasive fish and the need to incorporate reliable monitoring methods as part of a risk management strategy under the Water Framework Directive.

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