Marina Piria

• PhD
• Professor (Full) at University of Zagreb

Sampling was undertaken, with the same fishing gear and along the Sava River, from its source to its confluence, in September 2014 and September 2015. In total, 44 fish species were identified, of which 37 were native species and 7 were alien. Fish samples revealed independence in terms of both species composition and their abundance under differen...

Fish introductions, particularly in areas of high biological diversity and endemism, represent a major threat for biodiversity. In the Balkan Peninsula, 60 fish species have been introduced to date, of which 36 have become naturalised in inland waters. Since the Balkans are one of the world’s 35 biodiversity hotspots, this large presence of alien f...

There is increasing use worldwide of electronic decision-support tools to identify potentially invasive non-native species so as to inform policy and management decisions aimed at preventing or mitigating the environmental and socio-economic impacts of biological invasions. This study reviews the analytical approaches used to calibrate scores gener...

Electronic decision-support tools are becoming an essential component of government strategies to tackle non-native species invasions. This study describes the development and application of a multilingual electronic decision-support tool for screening terrestrial animals under current and future climate conditions: the Terrestrial Animal Species I...

This publication is based on work from the European Cooperation in Science and Technology (EU COST) Action Conservation of freshwater mussels: a pan-European approach (CONFREMU), CA18239, supported by COST, and from the European Union Directorate-General (EU DG) for Environment contract Providing Technical and Scientific Support in Measuring the Pu...

Brown trout of non-native lineages (e.g., Atlantic) have been stocked into Croatian streams and rivers primarily to meet anglers’ demand, resulting in the presence of admixed populations at many locations. The clear, easily distinguishable morphological differences between brown trout of the introduced Atlantic (AT) and indigenous Danubian (DA) lin...

Geometric morphometry is effective in distinguishing bivalve species and populations, including the economically and environmentally important Mediterranean mussel, Mytilus galloprovincialis. Although widely distributed, shell shape variation in M. galloprovincialis along the eastern Adriatic Sea has been infrequently studied. Farming practices and...

Increasing global trade in agricultural and horticultural products coupled with climate change are amongst the main drivers of the global spread of non-native insect species. This trend has substantial impacts on agroecosystems and economies in general. The aim of this study was to screen non-native insect species for their risk of invasiveness in...

Non-native species risk analysis is a dynamic process that requires periodic review and revision. In this study, we investigated changes in the risk ranks of the 69 non-native freshwater fish species in England and Wales previously screened with the Fish Invasiveness Screening Kit using its successor, the Aquatic Species Invasiveness Screening Kit...

In the Western Balkans, fishery management and legislation do not recognize the high molecular diversity of native brown trout. For this reason, stocking of streams relies on brown trout of non-native origin. In recent years, there have been new findings about the life-history features, dispersal and molecular characterisation of nominal taxa of br...

As a result of the increasing threats posed by non-native species invasions, there has been a rise in the demand for decision support tools that can more efficiently identify those non-native species likely to become invasive. As part of the risk screening (first) step in the environmental risk analysis process, three multilingual decision support...

In invasion biology, terminological frameworks contribute to the improvement of effective communication among scientists, stakeholders, and policy-makers. This is important not only for informing policy decisions but also for engaging the broader public in understanding the risks associated with biological invasions. Meanwhile, the role of non-Engl...

Terrestrial Aquatic Species Invasiveness Screening Kit (v2.4.1)

Terrestrial Plant Species Invasiveness Screening Kit (v2.4.1)

In the published article [...]

The last populations of Danube salmon (Hucho hucho) in Croatia are found in the Kupa and Una Rivers; however, the size of the suitable area that could serve as the best spawning ground for the remnant Danube salmon population in these rivers is not known. The study aimed to leverage anglers' experiences to determine the sections of the Una and Kupa...

Ecosystems worldwide are struggling with increasingly high levels of human-induced stressors, impacting their ecological health at local, regional, and global scales. Among the factors affecting freshwater organisms, temperature stands out, especially given the recent escalation of global warming, with possible adverse effects. In this study, we ex...

The invasion of non-native species (NNS) is one of the greatest threats to biodiversity loss and represents a major problem in the Mediterranean Sea. Although many recent EU policies and directives address this problem and numerous scientific papers have been published, the available data remains scattered and incomplete. In 2021, the World Registe...

This study reports the presence of Percnon gibbesi in the North Adriatic Sea, specifically at Cape Kamenjak, Croatia. The species was first observed in the Mediterranean Sea in 1999, and has rapidly proliferated across the region, with Cape Kamenjak now representing its northernmost finding. Seven individuals were identified during free-diving acti...

Introduction: The genetic diversity of brown trout in the Western Balkans has been disrupted by the introduction of non-native Atlantic phylogenetic lineages and non-native haplotypes of the Danubian phylogenetic lineage. The Western Balkans is characterized by the greatest phenotypic and genotypic diversity of trout populations, and a large part o...

Standardized terminology in science is important for clarity of interpretation and communication. In invasion science – a dynamic and rapidly evolving discipline – the proliferation of technical terminology has lacked a standardized framework for its development. The result is a convoluted and inconsistent usage of terminology, with various discrep...

Under the increasing threat to native ecosystems posed by non-native species invasions, there is an urgent need for decision support tools that can more effectively identify non-native species likely to become invasive. As part of the screening (first step) component in non-native species risk analysis, decision support tools have been developed fo...

In the last decades in Europe, especially in the Balkan region, modernization of agriculture gave priority to economic growth without consideration of the environmental impact and sustainable development. Fisheries have traditional and essential importance of food and income in the Slovenia, Croatia, Serbia, Bosnia and Herzegovina, Montenegro, Nort...

Freshwater aquatic ecosystems are the most vulnerable ecosystems due to pressures caused by human activities, while also having high importance for retaining biodiversity and social and economic significance. Inland commercial and recreational fishing in Croatia has had a long history and remains so today. The main purpose of this chapter is to giv...

Huchen Hucho hucho (L.) is one of the largest salmonids in the world and one of the most endangered fish species inhabiting the Danube River Basin in Central Europe. The natural distribution range of the huchen included drainages in Austria, Bosnia and Herzegovina, Croatia, Czechia, Germany, Hungary, Montenegro, Poland, Romania, Serbia, Slovakia, S...

Globally, marine bioinvasions threaten marine ecosystem structure and function, with the Mediterranean Sea being one of the most affected regions. Such invasions are expected to increase due to climate change. We conducted a risk screening of marine organisms (37 fishes, 38 invertebrates, nine plants), both extant and ‘horizon’ (i.e. not present in...

Standardized terminology in science is important for clarity of interpretation and communication. In invasion science — a dynamic and quickly evolving discipline — the rapid proliferation of technical terminology has lacked a standardized framework for its language development. The result is a convoluted and inconsistent usage of terminology, with...

Round goby Neogobius melanostomus is one of the three invasive Ponto-Caspian gobies found in the Sava River basin in Croatia. It has a negative effect on the native ecosystems and is more abundant in highly polluted areas. The objective of this study was to determine the fluctuating asymmetry of four morphometric characters, as well as otolith widt...

Pseudorasbora parva is a non-native species that has long been established in Croatia and Europe and has been on the European list of Invasive Alien Species of Union concern since 2016. The species is known for its high invasiveness, negative impact on native species and rapid rate of spread, which is facilitated by its specific life history charac...

The publication is the summary report from the Coalition Clean Baltic expert workshop ‘Natural river processes as a base for river -related protected areas and river restoration' held 20-22.04.2023 in Poland in the surroundings of Drawa National Park. The workshop was held as a networking event within the EU Biogeographical Process. All presentati...

Round goby Neogobius melanostomus is one of the three invasive Ponto-Caspian gobies found in the Sava River basin in Croatia. It has a negative effect on the native ecosystems due to its high invasive potential that enables its rapid spread upstream in inland watercourses. The objective of this study was to determine the differences in sagittal oto...

Population genetic analysis of variation at five neutral microsatellite loci for Mediterranean mussels (Mytilus galloprovincialis) from 18 sites along the eastern Adriatic Sea revealed little or no spatial variation. In contrast, seascape genetics analysis revealed a pronounced locus-specific gradient in allelic and genotypic frequencies across the...

Non-native aquatic plants are amongst the major threats to freshwater biodiversity and climate change is expected to facilitate their further spread and invasiveness. To date, in Croatia no complete list of non-native extant and horizon aquatic plants has been compiled nor has a risk screening been performed. To address this knowledge gap, 10 extan...

Salmonids are an extensively hatchery-reared group of fishes that have been introduced worldwide mainly for their high commercial and recreational value. The Balkan Peninsula (south-eastern Europe) is characterised by an outstanding salmonid diversity that has become threatened by the introduction of non-native salmonids whose potential risk of inv...

Aquatic invasions are one of the major threats for freshwater ecosystems. However, in developing countries knowledge of biological invasions essential for the implementation of appropriate legislation is often limited if not entirely lacking. In this regard, the identification of potentially invasive non-native species by risk screening, followed b...

Although the current research findings may not solve all identified shortcomings related to research in the risk screening of non-native species, all papers in this Special Issue have contributed to fill at least partially the existing gaps. The content of the Special Issue has helped to emphasise the importance not only of using appropriate nomenc...

Alongside climate change, the introduction of non-native species (NNS) is widely recognized as one of the main threats to aquatic biodiversity and human well-being. Non-native species and biodiversity are generally low priority issues on the political agendas of many countries, particularly in European countries outside the European Union (EU). The...

Although several attempts to establish a database on non-native species in Western Balkans have been done through previous EU projects, the database on non-native species still is not complete nor available online. Hence, literature search of introduced freshwater and marine organisms were performed for Albania, Bosnia and Herzegovina and Montenegr...

The RiskMan Project was built with the main aim to strengthen the Educational Capacity for Risk Management of Non Native Aquatic Species in Albania, Bosnia and Herzegovina, Montenegro by promoting the education of stakeholders and higher education students and stimulate cooperation among the target countries. To achieve this aim, a specific working...

Aquatic Species Invasiveness Screening Kit (AS-ISK) v.2.3 was used to assess the risk of invasiveness of some aquatic non-native (NN) species in Western Balkans. Species from each of the three Partner Countries (Albania, Bosnia & Herzegovina and Montenegro) and for the Program Balkans Countries (Croatia and North Macedonia) were selected. For the a...

The risk screening of non-native species that are likely to be invasive in a designated risk assessment area is crucial for implementing strategies of rapid response and mitigation to protect native biodiversity and socio-economic activities. However, for successful risk-ranking of the screened species, provision of scientifically defensible eviden...

Brown trout of non-native lineages have been stocked into Croatian streams and rivers primarily to meet angler demand. The diet of brown trout in the Black Sea Basin of Croatia is poorly understood, and there are no studies examining feeding competition between the Atlantic (AT) and Danube (DA) lineages of brown trout and their hybrids (HY). The ai...

The research carried out so far, especially the one from a recent collaboration, revealed remarkable molecular diversity in indigenous brown trout (salmo trutta) in streams in the Black Sea basin of the continental Croatia and Serbia. It also revealed the history of impact from fishery management by stocking.

Score-based decision-support tools are increasingly used to identify potential invasive alien species as part of the risk-screening component of non-native species risk analysis. Amongst these tools are the Weed Risk Assessment (WRA) and its derivatives, e.g. the Aquatic Species Invasiveness Screening Kit (AS-ISK), which both have been extensively...

The record is confirmed of a ‘Clariobranchus’ hybrid Clarias gariepinus x Heterobranchus sp. specimen in the River Danube of Croatia. Clarias gariepinus was introduced to Europe for farming and research purposes. Because of their faster growth and short time to achieve market size, ‘Clariobranchus’ hybrids have gained attention in European aquacult...

Ivan Špelić, mag. ing. agr., mag. oecol. et prot. nat. Sveučilište u Zagrebu Agronomski fakultet Svetošimunska cesta 25, Zagreb, Hrvatska ispelic@agr.hr prof. dr. sc. Renata Bažok Sveučilište u Zagrebu Agronomski fakultet Svetošimunska cesta 25, Zagreb, Hrvatska prof. dr. sc. Marina Piria Sveučilište u Zagrebu Agronomski fakultet Svetošimunska cest...

Настоящий документ является техническим документом, способствующим достижению региональных результатов в рамках проекта программы технического сотрудничества ФАО (TCP/RER/3701) «Системы и методологии сбора данных о рыболовстве во внутренних водоемах Европы», финансируемого Региональным отделением ФАО для Европы и Центральной Азии. Данная работа осу...

Human-induced biological introductions pose a major threat to global biodiversity, and this is especially frequent in the eastern Mediterranean region, which is a globally important biodiversity hotspot area of high conservation value. To predict at which level introduced species in this region might become invasive under current and projected clim...

Alongside climate change, the introduction of non-native species (NNS) is widely recognized as one of the main threats to aquatic biodiversity and human well‐being. Non-native species and biodiversity are generally low priority issues on the political agendas of many countries, particularly in European countries outside the European Union (EU). The...

The study investigates feeding habits of thermophilic species and species with subtropical affinity in the fishing catch in the Bay of Medulin (northeastern Adriatic Sea), and contributes to the knowledge about their presence in recently extended distributional range. In our methodology, the presence of the Seriola dumerili, Sphyraena sphyraena, Li...

The threat posed by invasive non-native species worldwide requires a global approach to identify which introduced species are likely to pose an elevated risk of impact to native species and ecosystems. To inform policy, stakeholders and management decisions on global threats to aquatic ecosystems, 195 assessors representing 120 risk assessment area...

Brown trout is a salmonid fish with a natural range extending throughout western Eurasia and North Africa. Due to its commercial value, it has also been introduced worldwide. In continental Croatia, introduced trout of the Atlantic lineage hybridizes with native trout of the Danubian lineage, threatening the native genetic diversity. The geometric...

Morphological and elemental composition of otoliths are a promising tool for fish stock identification. In this regard, European eel has not been sufficiently researched. The aim of this study was to determine otolith shape index values and microchemistry composition of 14 elements in otoliths of European eel between riverine and lacustrine stocks...

This study investigated the effect of stocking density on growth performance, blood biochemical profiles, antioxidative capacity, and muscle quality of gibel carp (Carassius gibelio). Gibel carps (initial body weight 57.04 ± 1.89 g) were reared at high stocking density (HSD, 10.85 kg m−3), medium stocking density (MSD, 5.06 kg m−3), and low stockin...

By the intensification of maritime traffic, shipping could become one of the most likely pathways of introduction of non-indigenous species (NIS) in the Adriatic Sea. In this paper we provided an updated list of NIS introduced into Adriatic Sea by shipping as pathway, the most likely vectors of introduction, country of first detection, year, origin...

Introduced and translocated non-native species are a major threat to biodiversity, especially in aquatic habitats. Efforts aimed at the mitigation of impacts and the implementation of preventative measures for the conservation of native biota must rely upon an accurate evaluation of the risks posed by non-native invasive species and are expected to...

During recent intensive research, monitoring and inventory programmes in the large, inland waters of Croatia, 72 specimens of the racer goby Babka gymnotrachelus were collected at eight locations in 2016 and 2018, and of these, 61 were juveniles. This confirms the establishment of a self-sustaining population in the main channel of the Danube in Cr...

The biology and ecology of non-native freshwater Ponto-Caspian (P-C) gobies: monkey goby, Neogobius fluviatilis (Pallas, 1814), round goby, Neogobius melanostomus (Pallas, 1814) and bighead goby, Ponticola kessleri (Günther, 1861) have been studied in Croatia, but the genetic structure of populations in the Sava River catchment remains unknown. Onl...

Environmental changes due to non-native species introductions and translocations are a global concern. Whilst understanding the causes of bioinvasions is important, there is need for decision-support tools that facilitate effective communication of the potential risks of invasive non-native species to stakeholders. Decision-support tools have been...

Environmental changes due to non-native species introductions and translocations are a global concern. Whilst understanding the causes of bioinvasions is important, there is need for decision-support tools that facilitate effective communication of the potential risks of invasive non-native species to stakeholders. Decision-support tools have been...

Background. The molecular diversity of brown trout, Salmo trutta Linnaeus, 1758, has been poorly studied in Croatia. The control region of mitochondrial DNA (CR mtDNA) is in addition to other molecular markers a reliable for identifying phylogenetic lineages (haplogroups) and haplotypes of brown trout. Based on analyses of the control region of mit...

The ecological monitoring in Marine Protected Areas (MPAs) needs technological implementation to achieve the standard required for an advanced ecosystem management. This paper describes the use, and provide the initial results of a continuous time-lapse image monitoring system, cabled with underwater cameras located in a Natura 2000 site: Šibenik (...

The diversity of native trout fish Salmo spp. comprises a variety of nominal taxa in Serbia, Montenegro, and Bosnia and Herzegovina. Recent mapping of the resident trout populations detected the presence of brown trout Salmo trutta (sensu stricto) of the Atlantic (AT) mtDNA lineage introduced into populations of both tentative Danubian trout Salmo...

Glucose and fructose play a central role in the metabolism and cellular homeostasis of organisms. Their absorption is co-mediated by two families of glucose transporters, Na+-coupled glucose co-transporters (SGLTs) and facilitative Na+-independent sugar carriers (GLUTs), in the intestine. However, limited information has been available on these tra...

Populacije potočne pastrve i njihova morfološka različitost u potocima Samoborsko-žumberačkog gorja još nije istraživana. Stoga je cilj ovog rada bio utvrditi kondiciju, dužinsko masene odnose, morfometrijske i merističke značajke između pet populacija potočne pastrve. Analizirano je ukupno 70 primjeraka potočne pastrve. Najniži Fultonov kondicijsk...

This document is a technical paper contributing to the regional results under an FAO Technical Cooperation Programme project (TCP/RER/3701) on “Systems and methodologies of data collection in inland fisheries of Europe”, financed by the FAO Regional Office for Europe and Central Asia (REU). This work is facilitated by the European Inland Fisheries...

The aim of this paper is to provide an overview of bluefin tuna, with special regard to its farming challenges. Tuna is one of the most prominent species in fisheries worldwide. The high market value of tuna stocks has led to intensified fishing pressure that resulted in drastic population reductions in every ocean where these fish are found. It is...

The brown trout (Salmo trutta) is one of the most famous freshwater fish species, appreciated for consumption but also very attractive for fishing. For this reason, there have been many attempts throughout history to preserve and expand the range of distribution of this fish species. Thus, due to the stocking purposes, fertilized eggs and fingerlin...

The competitive attitude to food by the species introduced can affect the abundance of native ichthyofauna. The aim of the study was to determine the composition of the diet of Rainbow trout and European eel from the Žrnovnica River, to analyze the prey species consumed and to determine if there was a dietary competition between the two species. Th...

The catch of the “poponica” trammel net in the Bay of Medulin, from May to September 2018, was analyzed. A total of 27 fish species were identified, 19 of which are commercially important. The total numerical representation of each species, the weight fraction of each commercially important species in the total fish catch, and their average weight...

In recent years, fish invasion has become one of the main reasons for the decline of native fish stocks. Topmouth gudgeon Pseudorasbora parva (Temminck & Schlegel, 1846) is a small fish native to Eastern Asia and introduced to Europe as well as to Croatia. It typically inhabits small ponds and ditches, but also larger lakes and streams. P.parva is...

There is a need to develop comparable data collection and analysis systems for better implementation of management programs and to evaluate environmental, social and economic values of fisheries in inland waters.

Brown trout has been widely introduced/translocated into suitable environments globally. In Croatia, the Danube (DA) lineage of brown trout is native. However, due to anglers’ activities, brown trout of the Atlantic (AT) lineage were stocked into Croatian streams and rivers. They hybridize with native brown trout causing a loss in native genetic va...

One specimen of North African catfish was caught on 29 September 2016 by gillnet in the Danube River (1418 rkm, near Zmajevački dunavac) by commercial fisherman during the regular fishing activity

The freshwater Fish Invasiveness Screening Kit (FISK) has been applied in 35 risk assessment areas in 45 countries across the six inhabited continents (11 applications using FISK v1; 25 using FISK v2). The present study aimed: to assess the breadth of FISK applications and the confidence (certainty) levels associated with the decision-support tool’...

The diversity of gut microbiota is crucial for many host functions including digestion, nutrition, disease resistance and immunity. Fish gut microbiota is more complex than was previously believed and is characterized by a great bacterial diversity. However, the role of many of them is still unclear. The gut microbiota of aquatic organisms is influ...

Procjena učestalosti pojavljivanja gospodarski važnih vrsta riba u estuariju rijeke Krke, uvala Martinska nasuprot Šibenika provedena je od siječnja do travnja 2018. godine podvodnom video kamerom s kabelskim napajanjem. Na osnovu analize videozapisa utvrđeni su: postotak zastupljenosti gospodarski značajnih vrsta u odnosu na ostale prisutne vrste...

U Hrvatskoj, ilirski klen Squalius illyricus endem je jadranskog slijeva, a obitava u rijekama Cetini i Krki. U posljednjih 20-ak godina istraživanja na ovoj vrsti nisu napravljena, a s obzirom na uski areal njegova staništa važno je pratiti stanje populacija. Za potrebe ovog istraživanja u travnju 2018. godine prikupljena je 41 jedinka iz rijeke C...

At the beginning of the 20th century, the middle section of the Sava River in Croatia was unaffected by major human activities and rich in ichthyofauna. The Sava River was important for commercial and recreational fishing for the local population, which still remains today. However, the 1920s mining industry was established in Slovenia, which emitt...

The major objective of this study was to investigate the impact of wastewaters on the level of genotoxicity and the possible reflection of genotoxicity on the genetic variability in chub (Squalius cephalus) collected from the sites under different pollution pressures along the Sava River. To emphasize the impact of wastewaters, this study was carri...

The number of New Zealand’s freshwater fish listed as threatened has increased since 1992 when the first New Zealand threat classification system list was compiled. In this study, temporal and land cover-related trends were analysed for data on freshwater fish distribution, comprising more than 20 000 records for the 47 years from January 1970 to J...

Fish from the Sava River are consumed daily by the local people: therefore, concern has been raised about the health implications of eating contaminated fish. In the present study, potentially toxic elements (PTE), such as Zn, Cu, Cr, Ni, Cd, Pb, As, Hg, and methylmercury (MeHg), were determined in ichthyofauna that are commonly consumed. PTE were...

The major objective of this study was to investigate the impact of wastewaters on the level of genotoxicity and the possible reflection of genotoxicity on the genetic variability in chub (Squalius cephalus) collected from the sites under different pollution pressures along the Sava River. To emphasize the impact of wastewaters, this study was carri...

Brown trout is a widespread species of salmonid fish that naturally occurs throughout Europe and parts of Asia and it is introduced worldwide. It inhabits upper parts of cold streams and cold lakes. In Croatia, this species has historically been translocated with specimens originating from wide range of locations due to significant sport fishing an...

In this paper up-to-date information on the known introductions of non-native fish species in Slovenia are summarized. Since the last report of list of alien fish species in Slovenia, six new introduced species has been recorded, which makes 22 new fish species in total. New species was introduced accidentally, by natural range expansion and by aqua...

Available knowledge on the sichel, Pelecus cultratus, from the middle Danube River and its tributaries is insufficient. This study aims to provide new data on the morphology and ecology of sichel from the Mur River, and its distribution in Croatia and Slovenia. In 2009, the schooling of sichel were observed at a high-water level in the Mur River of...

The incidence and distribution of thermophilic fish species were investigated by the method of visual census at seven stations in Medulin Bay from June to October 2017. The presence of the greater amberjack, Seriola dumerili (Linnaeus, 1758), the pompano, Trachinotus ovatus (Linnaeus, 1758), the European barracuda, Sphyraena sphyraena (Linnaeus, 17...

Invasive Ponto-Caspian gobies, monkey goby Neogobius fluviatilis, round goby Neogobius melanostomus and bighead goby Ponticola kessleri have recently expanded their range and naturalized the Sava River basin in Croatia. Although their presence in Croatia has been noted and distribution and impact studied, age and growth have not yet been investigat...

This study examined the relationship between the sagittal otolith morphometric variables (length, height and weight) and body growth of the European eel. The eel’s studies ranged in total length from 11.2 to 79.5 cm. The relationships between the sagittal otolith variables and fish somatic growth were described with a non-linear function. The resul...

The Mediterranean Sea is increasingly under threat from invasive species that may negatively affect biodiversity and/or modify ecosystem structure and function. The bivalve mollusc Pinctada imbricata radiata is listed among the 100 most invasive species in the Mediterranean. A first finding of an established population of P. imbricata radiata in th...

In this paper up-to-date information on the known introductions of alien fish species in Croatia are summarized. Since the risk assesment performed on fish species introduced/translocated to Croatia, three new species has been recorded, which makes 30 new freshwater fish species in total. Sibirian sturgeon Acipenser baerii was introduced accidental...

The part of the River Danube basin in the Western Balkans region (11 sampled localities and 57 in total with using of published data) revealed the remarkable diversity of brown trout assessed using the Control Region (CR) of mitochondrial DNA (mtDNA) as a molecular marker. The greatest number of brown trout populations holds brown trout of the Da1...

Invasive alien species (IAS) are a significant and growing problem worldwide. In Europe, some aspects of IAS have been addressed through existing legal instruments, but these are far from sufficient to tackle the problem in a comprehensive manner. The Top 20 IAS issues for Europe were determined at the 1st Freshwater Invasives - Networking for Stra...